CN103595120A - Multi-incoming-line standby power supply automatic switching-in method - Google Patents
Multi-incoming-line standby power supply automatic switching-in method Download PDFInfo
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- CN103595120A CN103595120A CN201310594411.3A CN201310594411A CN103595120A CN 103595120 A CN103595120 A CN 103595120A CN 201310594411 A CN201310594411 A CN 201310594411A CN 103595120 A CN103595120 A CN 103595120A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
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Abstract
The invention discloses a method for enabling a standby power supply automatic switching-in device with multiple power supplies and multiple incoming lines of a transformer substation to perform standby power supply automatic switching-in fast, efficiently and accurately. According to the method, the standby power supply automatic switching-in device is arranged on busbars and incoming lines in a centralized mode to collect operation information of a power supply network and determine detailed criteria on the states of all the incoming lines, busbar working power supplies and standby power supply automatic switching-in action logic, wherein the busbars and the incoming lines relate to single busbars, signal busbars with bypasses, single busbar segments and single busbar segments with bypasses. Thus, the standby power supply automatic switching-in device can automatically identify the operation states of all the incoming lines and the sources of power supplies of all the incoming lines of a multi-incoming-line power supply grid, identify standby circuits according to preference constant values, automatically select an action mode and preferably close circuits which have high preference constant value grades, ensure that circuits (such as double-circuit lines) of the same power supply source do not participate in mutual-switching-in, enable two systems to undergo loop closing, greatly improve the power supply reliability of the power supply network, achieve automatic power restoration of the power supply network and ensure safe operation of power systems.
Description
Technical field
The present invention relates to the method that transformer station's stand-by power supply automatically drops into, particularly a kind ofly there is many inlet wires other generations, enter the standby electric power automatic throwing method of segmentation band bypass transformer station more.
Background technology
Along with socioeconomic high speed development, every profession and trade is increasing to the demand of electric power, and power consumer is also more and more higher to the requirement of the power supply reliability of electrical network, and the transformer station that possesses multiloop supply line is more and more.Use is adapted to the automatic throw-in equipment of emergency power supply of many inlet wires, improves the power supply reliability of electrical network, has become common recognition in the industry.
The automatic throw-in equipment of emergency power supply that in prior art, transformer station is used, be difficult to realize the prepared auto restart of many inlet wires electric power-feeding structure is controlled, it is simple in structure, the scope of application is little, the inlet wire quantity controlling is very few, combined floodgate that can only the standby inlet wire of simple realization, does not also have effectively to identify the automatic switching device of standby power supply in many incoming powers source at present.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of automatic throw-in equipment of emergency power supply that makes to have many power supply sources ,Duo inlet wire transformer station can be fast, efficiently, accurately carry out the method for prepared auto restart.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is:
Many inlet wires standby electric power automatic throwing method of the present invention, comprise and install backup auto-activating device concentratedly gather supply network operation information on the bus that relates in single busbar connection, the bypass of single busbar connection band, single mother partition and the bypass of single mother partition band and inlet wire method, it is characterized in that: the judgement of its inlet wire state, bus working power and prepared auto restart action logic is undertaken by following criterion:
1) when certain service entrance switch, jump position=0 or inlet wire current IL>0.06In, after 1s time delay, sentencing this inlet wire is working power;
2) when certain inlet wire maintenance pressing plate drops into or service entrance switch is jumped position=1 and inlet wire current IL<0.06In, and through 1s time delay, sentencing this inlet wire is inoperative power supply;
3) when certain service entrance switch, jump position=1 and inlet wire current IL<0.06In and primary voltage UL and be greater than compression set value maybe when examining this inlet wire and have compression set value not drop into, need not sentence this inlet wire has pressure, and after 1s time delay, sentencing this inlet wire is stand-by power supply;
4) when certain inlet wire maintenance pressing plate drops into, or service entrance switch is jumped position=0, or inlet wire current is greater than 0.06In, maybe when inspection inlet wire has compression set value to drop into, primary voltage has been less than compression set value, or and this inlet wire be that while having one to be working power in the circuit in same power supplies source, sentencing this inlet wire is non-stand-by power supply;
5) when certain inlet wire of single mother partition band bypass is not when to be that working power and this inlet wire are other throw for pressing plate, judge that this inlet wire is the working power of its place bus;
6), when certain inlet wire of single mother partition band bypass is when to be that working power and this inlet wire are other drops into for pressing plate, by-pass switch maintenance pressing plate does not drop into and bypass articulates mother I or II when female, judges that this inlet wire is mother I or II mother working power;
7) source of each incoming power and action are arranged to preferential definite value, make backup auto-activating device when operation, can automatically identify each inlet wire running status, power supply source, according to the height of preferential definite value, close corresponding stand-by power supply;
8), when inlet wire is hauled oneself willingly into, the action logic that power supply drops into is automatically:
A, after backup auto-activating device has charged, I, mother II all meet bus condition with no pressure, and working power all, without stream, and has stand-by power supply, when control word input is moved back in extension wire voltage inspection throwing, need to check that having at least a stand-by power supply primary voltage to be greater than inlet wire has compression set value, when stable function drops into, also need to meet stable switchover enabling condition, meet after above condition, through the time delay tripping all working mains switch of adjusting, device sends actuating signal, prepared auto restart electric discharge simultaneously;
After B, the tripping of confirmation all working mains switch, regain working power trip signal, connection is cut function and is dropped into, connection cut time delay to after send connection and cut device command, confirm to join and cut after equipment tripping, regain connection and cut device command, then through combined floodgate time delay, close the stand-by power supply that preferential definite value is high, or connection is cut function and is not dropped into,, after tripping working power, directly through combined floodgate time delay, close the stand-by power supply that preferential definite value is high, close a floodgate successfully, prepared auto restart finishes, if close a floodgate unsuccessfully, without time delay, closes the stand-by power supply that preferential definite value is lower;
C, when circuit is other while dropping into for pressing plate, jump, close corresponding service entrance switch and change jumping into, close by-pass switch, sentence inlet wire and sentence bypass without stream without flowing also to become, sentence primary voltage and still get corresponding inlet wire PT voltage.
When segmentation is hauled oneself willingly into, the action logic that stand-by power supply drops into is automatically:
1) establish I female for secretly standby, II mother be working power, if the female decompression of II, mother I have press and the female working power of II all without flowing, the order of jumping II mother working power is sent out in time delay;
2) confirm after the equal tripping of the female working power of II, regain trip signal, connection is cut function and is dropped into, connection cut time delay to after send connection and cut device command, confirm to join and cut after equipment tripping, regain connection and cut device command, then send out segmentation closing pulse through time delay, concurrent " segmentation prepared auto restart closes segmentation action " signal, or connection is cut function and is not dropped into,, after the female working power of tripping II, directly through time delay, send out segmentation closing pulse, concurrent " segmentation prepared auto restart closes segmentation action " signal;
3) confirm, behind segmentation jumping position=0, to send out prepared auto restart actuating signal, segmentation prepared auto restart logic completes.
Described preferential definite value is set as follows:
1) each incoming power is just made as to four grade points by rank, each incoming power is given a grade point, uses respectively Arabic numerals " 1 ", " 2 ", " 3 " and " 4 " to represent, " 1 " is highest, and " 4 " are lowermost level;
2), from the stand-by power supply of same power supplies, described grade point is made as identical;
3) when the grade point that incoming power is set is no less than three, the stand-by power supply that grade point is high should be preferentially closed in prepared auto restart action, if the stand-by power supply of same levels value is crossed in prepared auto restart failure, removes to close the higher stand-by power supply of other grade point middle grade value.
Describedly cut function to drop into the equipment relate to be load outlet, small power supply inlet wire.
System exception criterion before and after the method also comprises starting criteria and hauls oneself willingly into, described starting criteria comprises Voltage unbalance starting, reclosing starting, closes contact starting; Described system exception criterion comprises that hauling oneself willingly into front low-frequency and low-voltage locking inlet wire hauls oneself willingly into, hauls oneself willingly into rear low-frequency and low-voltage and jump standby.
Described Voltage unbalance starting criteria is: phase voltage imbalance or line Voltage unbalance, and during terminal station power line generation earth fault, the fault phase of power line and the ratio perfecting between phase voltage are less than earth fault unbalanced coefficient definite value; Maybe, when there is phase-to phase fault, the minimum line voltage of power line and the ratio of maximum line voltage are less than phase-to phase fault unbalanced coefficient definite value.
Described reclosing starting criteria is: in one section of time broadening of line failure, in judgement terminal station, " have pressure → with no pressure → have pressure → with no pressure " process of busbar voltage, meets this voltage change process and think that starting recloser condition is satisfied.
The described contact that closes starts: the tripping of power line service entrance switch.
Described low-frequency and low-voltage locking inlet wire haul oneself willingly into for: according to busbar voltage and frequency change, carry out recognition system operating mode, according to definite value locking inlet wire prepared auto restart.
Describedly haul oneself willingly into rear low-frequency and low-voltage and jump and be standbyly: in a period of time of closing after stand-by power supply at prepared auto restart, if system frequency or electric voltage exception disconnect stand-by power supply.
Compared with prior art, many inlet wires of the present invention standby electric power automatic throwing method, can automatically identify each inlet wire running status of many inlet wires power supply grid, each incoming power source, can identify extension wire according to preferential definite value, automatically select manner of execution, preferentially close the high circuit of preferential definite value rank, guarantee not participate in mutual throwing between the circuit (double loop etc.) in same power supply source, make two closing the rings, it can improve the power supply reliability of supply network greatly, realize supply network automatic power and recover, guarantee safe operation of power system.
Accompanying drawing explanation
Fig. 1 is the network architecture schematic diagram of one of preferred embodiment of the present invention.
Fig. 2 is the LBZT logic diagram that is applicable to pacify control system of the present invention.
Fig. 3 is Voltage unbalance degree starting LBZT criterion logic diagram of the present invention.
Fig. 4 is that Voltage unbalance degree of the present invention recovers criterion logic diagram.
Fig. 5 is reclosing starting LBZT criterion logic diagram of the present invention.
Fig. 6 is the female low frequency of front I, the low pressure decision logic figure of hauling oneself willingly into of the present invention.
Fig. 7 is the front low-frequency and low-voltage latching logic figure that hauls oneself willingly into of the present invention.
Fig. 8 is the female low frequency of I after LBZT action of the present invention, low pressure decision logic figure.
Fig. 9 is that after LBZT action of the present invention, low-frequency and low-voltage is jumped standby inlet wire logic diagram.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
Many inlet wires standby electric power automatic throwing method of the present invention, for the Substation Bus Arrangement with single busbar connection, the bypass of single busbar connection band, single mother partition and the bypass of single mother partition band, the spare power automatic switching method of the automatic throw-in equipment of emergency power supply (claiming again backup auto-activating device) of design, it comprises following content:
A, on bus and inlet wire, install backup auto-activating device concentratedly, gather the supply network operation informations such as busbar voltage, primary voltage, inlet wire current and inlet wire and block switch position;
B, the actual conditions of originating according to on-the-spot each incoming power, adjust and the source of incoming power is set and moves preferential definite value, make backup auto-activating device when operation, can automatically identify each inlet wire running status, power supply source, according to preferential definite value, close corresponding stand-by power supply;
C, when working power decompression, backup auto-activating device can judge that whether stable criterion meets, and according to each inlet wire running status detecting, selects suitable stand-by power supply simultaneously.
As shown in Figure 1; the female three-phase voltage of backup auto-activating device access following of ac: I, the female three-phase voltage of II, each inlet wire and bypass monophase current, each inlet wire PT voltage, sectionalised protection three-phase current (can not connect), access following intake: segmentation prepared auto restart inputs, inlet wire prepared auto restart inputs, locking segmentation prepared auto restart inputs, locking inlet wire prepared auto restart, I mother cut jump position, II mother cut jump the jumping position of position, each inlet wire, bypass and block switch and close rear, the side of each inlet wire for open into the maintenance of, each switch open into and the function input of each stable criterion open into.
Inlet wire is hauled oneself willingly into when following situations and is discharged: inlet wire prepared auto restart is deactivated, and definite value, soft pressing plate or hard pressing plate have one to exit; Without working power; Or there are working power and last working power to close rear disappearance; Or all working power supply is thrown maintenance pressing plate; After having charged, without stand-by power supply, or I is female and mother II does not meet while having press strip part, has stand-by power supply and all stand-by power supplies not to meet and have compression set value, after delay time definite value arrives; There is the input of locking inlet wire prepared auto restart; Segmentation is closed rear position=0 or is dropped into segmentation maintenance pressing plate; Any service entrance switch report is jumped position when abnormal; System low-frequency and low-voltage locking inlet wire prepared auto restart condition meets; Related switch refuses to jump (as working power switch is refused to jump, when connection is cut function input, connection TRIP is refused to jump); After prepared auto restart completes, low-frequency and low-voltage is jumped standby action.
From throwing, I is female dark standbyly to charge under condition below for example in segmentation: segmentation is hauled oneself willingly into the female dark standby mode of I and devoted oneself to work, and definite value input, soft or hard pressing plate all drop into; I, mother II all meet press strip part; Mother is jumped position=1; I, mother II all have working power; Without locking segmentation, haul oneself willingly into input; Discharge off condition.
Segmentation is example from throwing I mother secretly standby, discharges: segmentation is hauled oneself willingly into mother I and deactivated when following situations, and definite value, soft pressing plate or hard pressing plate have one to exit; Mother II is without working power, or has working power and last working power to close rear position=0, or the female all working power supply of II is thrown maintenance pressing plate; There is locking segmentation to haul oneself willingly into input; Jumping position=0 of mother when prepared auto restart does not move, or mother maintenance pressing plate drops into; After the female dark standby charging of I completes, mother I does not meet bus has the compression set value duration to be greater than the bus loss of pressure electric discharge time limit; Related switch refuses to jump (as working power switch is refused to jump, join TRIP and refuse to jump when connection is cut function input); Mother II has switch to jump position abnormality alarming; Segmentation prepared auto restart I is female to jump after working power.
The source of each incoming power and action are arranged to preferential definite value, make backup auto-activating device when operation, can automatically identify each inlet wire running status, power supply source, according to the height of preferential definite value, close corresponding stand-by power supply; Described preferential definite value is set as follows:
1) each incoming power is just made as to four grade points by rank, each incoming power is given a grade point, use respectively Arabic numerals " 1 ", " 2 ", " 3 " and " 4 " to represent, described grade point is " 1 " > " 2 " > " 3 " > " 4 " from high to low;
2), from the stand-by power supply of same power supplies, described grade point is made as same levels value (judging that with this which circuit is double loop);
3) when the grade point that incoming power is set is no less than three (when incoming power is two power supplys, just regardless of preferential definite value), the stand-by power supply that grade point is high should be preferentially closed in prepared auto restart action, if prepared auto restart failure, cross the stand-by power supply of same levels value, remove to close the higher stand-by power supply of other grade point middle grade value.
For example, when inlet wire 1 and inlet wire 3 are same power supply source, the method for preferential definite value can be adjusted by according to the form below:
| Inlet wire title | Preferential definite |
| Inlet wire | |
| 1 power supply source | “1” |
| Inlet wire 2 power supply sources | “2” |
| Inlet wire 3 power supply sources | “1” |
| Inlet wire 4 power supply sources | “3” |
During operation inlet wire 1, if need prepared auto restart, judge as follows:
1) inlet wire 1 and inlet wire 3, from same power supply, can not be knocked down line 3;
2) inlet wire 2, inlet wire 4, respectively from two different power supplys, can drop into;
3) the preferential definite value of inlet wire 2 is " 2 ", and the preferential definite value of inlet wire 4 is " 3 ", so during bus loss of pressure, preferentially close inlet wire 2, if close a floodgate, successfully finish, as the failure of closing a floodgate, continue to close inlet wire 4.
So this preferential definite value, in each incoming power source of explanation, has also comprised the explanation of each inlet wire grade point.
When certain circuit other for time, the judgement of corresponding line operating state, gets by-pass switch 5DL and replaces.The same time can only have a side to drop into for pressing plate; 5DL throws after maintenance pressing plate, still with the signal of corresponding line, judges operating state.
The state of inlet wire is to have and press and differentiate through 1S time delay in the situation that at the inoperative and corresponding bus of prepared auto restart, when the starting of inlet wire prepared auto restart, or the female dark standby startup of II, or mother I does not meet bus compression set value, or while only having a working power and tripping on I bus, do not carry out the differentiation of the female inlet wire state of I but remain start before or only have the state of a working power; When the starting of inlet wire prepared auto restart, or the female dark standby startup of I, or mother II does not meet bus compression set value, or while only having a working power and tripping on II bus, do not carry out the differentiation of the female inlet wire state of II but remain start before or only have the state of a working power.
If inlet wire is hauled oneself willingly into, charged, when " inspection of extension wire voltage is thrown and moved back " control word drops into, all stand-by power supply circuits do not meet inlet wire compression set value, and through the inlet wire decompression electric discharge time in time limit, inlet wire is hauled oneself willingly into electric discharge.
As shown in Figure 2, in order to adapt to peace control system, the present invention has dropped into relevant stable criterion.
Its relatively conventional inlet wire prepared auto restart logic has mainly increased starting criteria and has hauled oneself willingly into the system exception criterion of front and back.
Described starting criteria comprises: Voltage unbalance starting, reclosing start, close contact starting.
Described system exception criterion comprises: haul oneself willingly into front low-frequency and low-voltage locking LBZT(LBZT and refer to two inlet wires bright standby inlet wire prepared auto restart each other), haul oneself willingly into rear low-frequency and low-voltage and jump standby.
As shown in Figure 3,4, Voltage unbalance starting criteria
When peace control system is moved because of earth fault, as fault point has power supply to support to the electrical distance of 110kV terminal station bus, and power supply enabling capabilities is stronger, the phase voltage in 110kV terminal station declines limited, fault phase changes less with the degree of unbalance between sound phase, and during the power line generation earth fault in 110kV terminal station, the fault phase voltage in terminal station reduces to 0, fault phase is also 0 with sound degree of unbalance between mutually in theory.When there is phase-to phase fault, the minimum phase voltage at place, fault point is less with the ratio variation that the ratio of maximal phase voltage changes relative minimum line voltage and maximum line voltage, so adopt line Voltage unbalance degree comparatively sensitive.Now, when peace control system is moved cutting load because of phase-to phase fault, owing to being subject to fault point to the impact that has on the electrical distance of 110kV terminal station bus power supply to support, interior lines, 110KV terminal station voltage drop is less, degree of unbalance changes less, and during 110KV power supply generation phase-to phase fault, the ratio of minimum line voltage and maximum line voltage is close to 0.When phase voltage degree of unbalance and line Voltage unbalance degree all do not move, if bus is with no pressure, can think to pacify control system cutting load, prepared auto restart is inoperative.
What above logic was considered is single-phase or the earth fault of two-phase and the phase-to phase fault between two-phase, situation for three-phase simultaneous faults, this device does not give consideration, and reason is that the probability of three-phase fault own is minimum, and nearly all three-phase fault is all to be developed by single-phase or phase to phase fault.
U Ф max1 in figure: the female maximal phase voltage of I, U Ф min1: the female minimum phase voltage of I, U Ф max2: the female maximal phase voltage of II, U Ф min2: the female minimum phase voltage of II, U Ф Ф max1: the female maximum line voltage of I, U Ф Ф min1: the female minimum line voltage of I, U Ф Ф max2: the female maximum line voltage of II, U Ф Ф min2: the female minimum line voltage of II, 3U01: the female residual voltage of I, 3U02: the female residual voltage of II.
When Voltage unbalance be by 110kV terminal station power line outside All other routes fault while causing, after failure removal, Voltage unbalance degree recovers, in order to avoid this criterion, to follow-up equipment, action exerts an influence, and when the degree of unbalance of voltage is recovered, should remove in time degree of unbalance starting broadening.In addition when 110kV terminal station higher level's electrical network breaks down; as imbalance starting; after guilty culprit element (circuit, bus etc.) excision, peace control system is through delayed firing cutting load; fault element excision to peace control system acting cutting load during this period of time in; Voltage unbalance degree can recover conventionally, now if remove in time degree of unbalance starting broadening, can avoid prepared auto restart malfunction.This shows, Voltage unbalance recovers the scope of application that criterion has increased Voltage unbalance starting criteria.
As shown in Figure 5, reclosing starting criteria
Reclosing starting criteria is supplementing of uneven starting criteria, when causing the degree of unbalance of the caused 110kV of fault terminal station busbar voltage of peace control system acting and the caused degree of unbalance of its power line fault to be more or less the same, when power line fault occurs with the fault that can cause peace control system acting, uneven starting criteria all starts.As the failure removal that causes peace control system acting to pacify control system cutting load during this period of time in, in terminal station, voltage can recover in time, Voltage unbalance recovers the timely removing Voltage unbalance degree broadening time limit of logic meeting, thereby guarantee that prepared auto restart is inoperative when peace control system cutting load, otherwise should consider to exit uneven starting criteria, enable reclosing starting criteria.
After peace control action excision load, in 110KV terminal station, bus only can produce the process of " have pressure → with no pressure "; And during 110KV line failure (when circuit re-switching drops into), in 110KV terminal station, bus will produce the process of " have pressure → with no pressure → have pressure → with no pressure ".According to this process, inlet wire prepared auto restart can determine whether to start prepared auto restart by the judgement with no pressure of pressure that has to working bus bar.
For three-phase fault, after 110KV circuit re-switching action, busbar voltage can not produce the process of " with no pressure → have pressure ", so reclosing criterion is not considered three-phase fault.
Close contact starting criteria
When 110KV power line service entrance switch causes full station dead electricity because of reasons such as jumps, each phase (line) voltage all can be less than and perfect phase (line) voltage definite value, the equal fail to start of degree of unbalance of the degree of unbalance of phase voltage and line voltage, can consider to adopt and close contact start-up logic (can throw and move back), close contact starting and Voltage unbalance degree starting phase or, can guarantee that prepared auto restart reliably starts.
System low-frequency and low-voltage locking LBZT
When meritorious, no-power vacancy occurs system, low-frequency low-voltage load shedding device can move cut-out load, now for ensureing the stabilization of power grids, safety, 110kV terminal station prepared auto restart should not move.Can carry out recognition system operating mode according to busbar voltage and frequency change, so that timely locking LBZT for this reason.Fig. 6,7 is for hauling oneself willingly into the female low frequency of front I, low pressure decision logic figure, and the female low frequency of II, low pressure decision logic are identical with it, only need corresponding frequencies, voltage to change.
As shown in Figure 8,9, haul oneself willingly into rear low-frequency and low-voltage and jump standby inlet wire
Hauling oneself willingly into rear criterion is in a period of time of closing after stand-by power supply at prepared auto restart, by checking that stand-by power supply operating mode judges whether that system frequency, voltage have extremely, mainly to prevent that former working power from, by the rear prepared auto restart misoperation of low-frequency low-voltage load shedding device excision, guaranteeing system stability by disconnecting the mode of stand-by power supply.
It is mainly rapid in two steps that stand-by power supply drops into action logic automatically, i.e. power state detection and in-put of spare power supply.
The logic that inlet wire is hauled oneself willingly into power state detection is:
1. when service entrance switch is jumped position=0 or inlet wire current IL>0.06In(In is secondary rated current), after 1s time delay, sentencing this inlet wire is working power;
2. when inlet wire maintenance pressing plate drops into or service entrance switch is jumped position=1 and inlet wire current IL<0.06In(In is secondary rated current), and through 1s time delay, sentencing this inlet wire is inoperative power supply;
3. when service entrance switch is jumped position=1 and inlet wire current IL<0.06In(In is secondary rated current) and primary voltage UL be greater than compression set value (when inspection inlet wire has compression set value not drop into, need not sentence inlet wire and have pressure), after 1s time delay, sentencing this inlet wire is stand-by power supply;
4. when inlet wire maintenance pressing plate drops into, or service entrance switch is jumped position=0, or inlet wire current to be greater than 0.06In(In be secondary rated current), maybe when inspection inlet wire has compression set value to drop into, primary voltage has been less than compression set value, or and this inlet wire be that while having one to be working power in the circuit in same power supplies source, sentencing this inlet wire is non-stand-by power supply;
The logic that power state detection is hauled oneself willingly in segmentation is:
1. take inlet wire 1 as example, this inlet wire is that does not throw for pressing plate on working power and this inlet wire side, judges that this inlet wire is the female working power of I (while not throwing for pressing plate on inlet wire side, device acquiescence inlet wire 1 and inlet wire 2 are I mother power supplys, and inlet wire 3 and inlet wire 4 are the female power supply of II)
2. this inlet wire is that working power and this inlet wire are other for pressing plate input, when by-pass switch 5DL maintenance pressing plate does not drop into and bypass articulates I mother, judges that this inlet wire is the female working power of I;
3. this inlet wire is that working power and this inlet wire are other for pressing plate input, when by-pass switch 5DL maintenance pressing plate does not drop into and bypass articulates II mother, judges that this inlet wire is the female working power of II;
When inlet wire is hauled oneself willingly into, in-put of spare power supply logic is:
A, after backup auto-activating device has charged, I, mother II all meet bus condition with no pressure, working power all, without stream, and has stand-by power supply, throws to move back when control word drops into check that having at least a stand-by power supply primary voltage to be greater than inlet wire has compression set value when the inspection of extension wire voltage, when stable function drops into, also need to meet stable switchover enabling condition, meet after above condition, through the time delay tripping all working mains switch of adjusting, device sends actuating signal, prepared auto restart electric discharge simultaneously;
After B, the tripping of confirmation all working mains switch, regain working power trip signal.Ruo Lianqie function input, then starts and cuts the female miscellaneous equipment timing of I, II, and after time delay is arrived, prepared auto restart is sent out and cut miscellaneous equipment (small power supply interconnection as female in I, II or ground connection change etc.) order, sends actuating signal simultaneously; Then check that joining two equipment jumping positions of cutting opens into all putting 1, if in 20S, prepared auto restart is judged the equipment tripping of being cut by connection, regains and jumps miscellaneous equipment order; Then through combined floodgate time delay, close the stand-by power supply that priority is high, if close a floodgate successfully, prepared auto restart finishes, if close a floodgate unsuccessfully, without time delay, closes the stand-by power supply that priority is lower;
As long as C has a stand-by power supply to jump position=0, device sends and moves into function signal;
The tripping operation of D, working power, cut miscellaneous equipment order and circuit breaker after 20S occurs do not move yet (jumping position=0 that has certain working power, or drop into and when connection is cut, jump position 1=0 or jump a position 2=0), stop prepared auto restart logic, device sends " prepared auto restart is failed " signal;
E, when circuit is other while dropping into for pressing plate, jump, close corresponding service entrance switch and change jumping into, close by-pass switch, sentence inlet wire and sentence bypass without stream without flowing also to become, sentence primary voltage and still get corresponding inlet wire PT voltage, rather than get bypass PT.
When segmentation is hauled oneself willingly into, with the female dark standby segmentation of I, haul oneself willingly into as example, the action logic that stand-by power supply drops into is automatically:
A, mother II are with no pressure, I female have press and the female working power of II all without stream, the order of jumping II mother working power is sent out in time delay;
After B, the equal tripping of the female working power of confirmation II, regain trip signal; Ruo Lianqie drops into, then after working power is cut in startup, cut the miscellaneous equipment time limit, after time delay is arrived, prepared auto restart is sent out and is cut miscellaneous equipment (as small power supply interconnection or ground connection change etc.) order, send out " segmentation is hauled oneself willingly into I mother and cut the female device action of II " signal simultaneously, then check the whether tripping of equipment that connection cuts, if in 20s, prepared auto restart is judged the equipment tripping of being cut by connection, regains and jumps miscellaneous equipment order; Through time delay, send out 6DL closing pulse again, concurrent " segmentation is from catering to 6DL action " signal;
C, confirmation 6DL jump behind position=0, send out " prepared auto restart action mother I is secretly standby " signal, and segmentation is hauled oneself willingly into 1 logic and completed;
The tripping operation of D, working power, cut miscellaneous equipment order and send after 20s, circuit breaker does not move yet, stops segmentation and hauls oneself willingly into 1 logic, and device sends " prepared auto restart unsuccessfully " signal;
E, 6DL close a floodgate to order and send after 5s, and circuit breaker does not move yet, stop segmentation and haul oneself willingly into the female logic of I, and device sends " prepared auto restart failure " signal.
Backup auto-activating device of the present invention is by inlet wire state-detection, each incoming power source and action priority, and after electric power system working power decompression, the suitable stand-by power supply that can accurately close, thereby the reliability that raising is powered, guarantee power grid security.
Claims (10)
1. the method for inlet wire standby electric power automatic throwing more than a kind, comprise and install backup auto-activating device concentratedly gather supply network operation information on the bus that relates in single busbar connection, the bypass of single busbar connection band, single mother partition and the bypass of single mother partition band and inlet wire method, it is characterized in that: the judgement of its inlet wire state, bus working power and prepared auto restart action logic is undertaken by following criterion:
1) when certain service entrance switch, jump position=0 or inlet wire current IL>0.06In, after 1s time delay, sentencing this inlet wire is working power;
2) when certain inlet wire maintenance pressing plate drops into or service entrance switch is jumped position=1 and inlet wire current IL<0.06In, and through 1s time delay, sentencing this inlet wire is inoperative power supply;
3) when certain service entrance switch, jump position=1 and inlet wire current IL<0.06In and primary voltage UL and be greater than compression set value maybe when examining this inlet wire and have compression set value not drop into, need not sentence this inlet wire has pressure, and after 1s time delay, sentencing this inlet wire is stand-by power supply;
4) when certain inlet wire maintenance pressing plate drops into, or service entrance switch is jumped position=0, or inlet wire current is greater than 0.06In, maybe when inspection inlet wire has compression set value to drop into, primary voltage has been less than compression set value, or and this inlet wire be that while having one to be working power in the circuit in same power supplies source, sentencing this inlet wire is non-stand-by power supply;
5) when certain inlet wire of single mother partition band bypass is not when to be that working power and this inlet wire are other throw for pressing plate, judge that this inlet wire is the working power of its place bus;
6), when certain inlet wire of single mother partition band bypass is when to be that working power and this inlet wire are other drops into for pressing plate, by-pass switch maintenance pressing plate does not drop into and bypass articulates mother I or II when female, judges that this inlet wire is mother I or II mother working power;
7) source of each incoming power and action are arranged to preferential definite value, make backup auto-activating device when operation, can automatically identify each inlet wire running status, power supply source, according to the height of preferential definite value, close corresponding stand-by power supply;
8), when inlet wire is hauled oneself willingly into, the action logic that power supply drops into is automatically:
A, after backup auto-activating device has charged, I, mother II all meet bus condition with no pressure, and working power all, without stream, and has stand-by power supply, when control word input is moved back in extension wire voltage inspection throwing, need to check that having at least a stand-by power supply primary voltage to be greater than inlet wire has compression set value, when stable function drops into, also need to meet stable switchover enabling condition, meet after above condition, through the time delay tripping all working mains switch of adjusting, device sends actuating signal, prepared auto restart electric discharge simultaneously;
After B, the tripping of confirmation all working mains switch, regain working power trip signal, connection is cut function and is dropped into, connection cut time delay to after send connection and cut device command, confirm to join and cut after equipment tripping, regain connection and cut device command, then through combined floodgate time delay, close the stand-by power supply that preferential definite value is high, or connection is cut function and is not dropped into,, after tripping working power, directly through combined floodgate time delay, close the stand-by power supply that preferential definite value is high, close a floodgate successfully, prepared auto restart finishes, if close a floodgate unsuccessfully, without time delay, closes the stand-by power supply that preferential definite value is lower;
C, when circuit is other while dropping into for pressing plate, jump, close corresponding service entrance switch and change jumping into, close by-pass switch, sentence inlet wire and sentence bypass without stream without flowing also to become, sentence primary voltage and still get corresponding inlet wire PT voltage.
2. many inlet wires standby electric power automatic throwing method according to claim 1, is characterized in that: when segmentation is hauled oneself willingly into, the action logic that stand-by power supply drops into is automatically:
1) establish I female for secretly standby, II mother be working power, if the female decompression of II, mother I have press and the female working power of II all without flowing, the order of jumping II mother working power is sent out in time delay;
2) confirm after the equal tripping of the female working power of II, regain trip signal, connection is cut function and is dropped into, connection cut time delay to after send connection and cut device command, confirm to join and cut after equipment tripping, regain connection and cut device command, then send out segmentation closing pulse through time delay, concurrent " segmentation prepared auto restart closes segmentation action " signal, or connection is cut function and is not dropped into,, after the female working power of tripping II, directly through time delay, send out segmentation closing pulse, concurrent " segmentation prepared auto restart closes segmentation action " signal;
3) confirm, behind segmentation jumping position=0, to send out prepared auto restart actuating signal, segmentation prepared auto restart logic completes.
3. many inlet wires standby electric power automatic throwing method according to claim 1 and 2, is characterized in that: described preferential definite value is set as follows:
1) each incoming power is just made as to four grade points by rank, each incoming power is given a grade point, uses respectively Arabic numerals " 1 ", " 2 ", " 3 " and " 4 " to represent, " 1 " is highest, and " 4 " are lowermost level;
2), from the stand-by power supply of same power supplies, described grade point is made as identical;
3) when the grade point that incoming power is set is no less than three, the stand-by power supply that grade point is high should be preferentially closed in prepared auto restart action, if the stand-by power supply of same levels value is crossed in prepared auto restart failure, removes to close the higher stand-by power supply of other grade point middle grade value.
4. according to the many inlet wires standby electric power automatic throwing method described in claim 2 or 3, it is characterized in that: describedly cut function to drop into the equipment relate to be load outlet, small power supply inlet wire.
5. according to the many inlet wires standby electric power automatic throwing method described in claim 2 or 3, it is characterized in that: the system exception criterion before and after the method also comprises starting criteria and hauls oneself willingly into, described starting criteria comprises Voltage unbalance starting, reclosing starting, closes contact starting; Described system exception criterion comprises that hauling oneself willingly into front low-frequency and low-voltage locking inlet wire hauls oneself willingly into, hauls oneself willingly into rear low-frequency and low-voltage and jump standby.
6. many inlet wires standby electric power automatic throwing method according to claim 5, it is characterized in that: described Voltage unbalance starting criteria is: phase voltage imbalance or line Voltage unbalance, while being terminal station power line generation earth fault, the fault phase of power line and the ratio perfecting between phase voltage are less than earth fault unbalanced coefficient definite value; Maybe, when there is phase-to phase fault, the minimum line voltage of power line and the ratio of maximum line voltage are less than phase-to phase fault unbalanced coefficient definite value.
7. many inlet wires standby electric power automatic throwing method according to claim 5, it is characterized in that: described reclosing starting criteria is: in one section of time broadening of line failure, in judgement terminal station, " have pressure → with no pressure → have pressure → with no pressure " process of busbar voltage, meets this voltage change process and thinks that starting recloser condition is satisfied.
8. many inlet wires standby electric power automatic throwing method according to claim 5, is characterized in that: described in close contact starting: the tripping of power line service entrance switch.
9. many inlet wires standby electric power automatic throwing method according to claim 5, is characterized in that: described low-frequency and low-voltage locking inlet wire haul oneself willingly into for: according to busbar voltage and frequency change, carry out recognition system operating mode, according to definite value locking inlet wire prepared auto restart.
10. many inlet wires standby electric power automatic throwing method according to claim 5, it is characterized in that: described in haul oneself willingly into rear low-frequency and low-voltage and jump and be standbyly: in a period of time of closing after stand-by power supply at prepared auto restart, if system frequency or electric voltage exception, disconnect stand-by power supply.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0434002A2 (en) * | 1989-12-21 | 1991-06-26 | Siemens Nixdorf Informationssysteme Aktiengesellschaft | Circuit arrangement for installation of uninterruptable power supplies |
| CN101369739A (en) * | 2008-09-28 | 2009-02-18 | 上海宝钢化工有限公司 | Spare power automatic switching device and method for three-segment bus two-segment switch |
| CN101917058A (en) * | 2010-08-26 | 2010-12-15 | 深圳市国立智能电力科技有限公司 | Method and system for switching backup power supply |
| CN202142905U (en) * | 2011-05-25 | 2012-02-08 | 广东电网公司深圳供电局 | Logic device for shutting mistaken switching of spare power source automatic switch device of power supply |
-
2013
- 2013-11-21 CN CN201310594411.3A patent/CN103595120B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0434002A2 (en) * | 1989-12-21 | 1991-06-26 | Siemens Nixdorf Informationssysteme Aktiengesellschaft | Circuit arrangement for installation of uninterruptable power supplies |
| CN101369739A (en) * | 2008-09-28 | 2009-02-18 | 上海宝钢化工有限公司 | Spare power automatic switching device and method for three-segment bus two-segment switch |
| CN101917058A (en) * | 2010-08-26 | 2010-12-15 | 深圳市国立智能电力科技有限公司 | Method and system for switching backup power supply |
| CN202142905U (en) * | 2011-05-25 | 2012-02-08 | 广东电网公司深圳供电局 | Logic device for shutting mistaken switching of spare power source automatic switch device of power supply |
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