CN109713680A - Based on the area power grid voltage quickly regulating method for improving Sensitivity Method - Google Patents
Based on the area power grid voltage quickly regulating method for improving Sensitivity Method Download PDFInfo
- Publication number
- CN109713680A CN109713680A CN201910181570.8A CN201910181570A CN109713680A CN 109713680 A CN109713680 A CN 109713680A CN 201910181570 A CN201910181570 A CN 201910181570A CN 109713680 A CN109713680 A CN 109713680A
- Authority
- CN
- China
- Prior art keywords
- voltage
- power grid
- reactive
- sensitivity
- equipment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000035945 sensitivity Effects 0.000 title claims abstract description 66
- 238000000034 method Methods 0.000 title claims abstract description 36
- 230000001105 regulatory effect Effects 0.000 title abstract 2
- 238000012544 monitoring process Methods 0.000 claims abstract description 26
- 230000033228 biological regulation Effects 0.000 claims abstract description 15
- 230000001939 inductive effect Effects 0.000 claims description 21
- 239000003990 capacitor Substances 0.000 claims description 18
- 238000004088 simulation Methods 0.000 claims description 13
- 238000001514 detection method Methods 0.000 claims description 7
- 238000004422 calculation algorithm Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 3
- 238000005457 optimization Methods 0.000 claims description 3
- 230000008859 change Effects 0.000 abstract description 5
- 230000001965 increasing effect Effects 0.000 description 4
- 238000004364 calculation method Methods 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 238000007619 statistical method Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Classifications
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
Landscapes
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The present invention provides a kind of based on the area power grid voltage quickly regulating method for improving Sensitivity Method, based on throwing each point voltage sensibility caused by moving back by area power grid reactive apparatus, using the improvement sensitivity of each voltage monitoring point of area power grid as sequence, it carries out area power grid reactive apparatus and throws the accurate quick predict of each point voltage moved back, it more accurate can must predict that area power grid each point voltage change is stepped back in each reactive apparatus throwing, and then show that the area power grid voltage for meeting specific voltage needs adjusts optimal case, a kind of quick area power grid voltage adjusting suggestion is provided for operations staff, solves the operation status that dispatcher is depended in actual electric network pressure regulation unduly, it can ensure the safe and stable operation of area power grid voltage.
Description
Technical Field
The invention relates to the technical field of power grid voltage regulation, in particular to a regional power grid voltage rapid regulation method based on an improved sensitivity method.
Background
Along with the cross-country interconnection of power systems, the scale of power grids is larger and larger, and when a cooperation agreement is signed for the power grids sent to foreign regions, clear index requirements are often provided for the voltage and the power factor of a boundary station, the power grids belong to respective scheduling mechanisms of two countries, the load and power source prediction of each other is lacked, the power grids are similar to black boxes relative to the other power grid, and the scheduling departments need to quickly respond to the change of the black box power grids so as to meet the index requirements of the boundary station. Therefore, maintaining the safe and stable operation of the voltage of the transnational power grid is particularly important for transnational power transmission.
However, it is difficult for dispatchers to take effective measures for fast dispatch and decision making for such black box power grids as well as for international cooperative area power grids. In the prior art, a BPA simulation method based on an actual power grid operation mode is too complicated and is difficult to complete in a short time.
Disclosure of Invention
The invention provides a regional power grid voltage rapid adjustment method based on an improved sensitivity method, which aims to solve the problems that the conventional power grid voltage adjustment method is too complicated and is difficult to complete in a short period, and the boundary node voltage cannot meet the protocol requirement for a long time due to unpredictable voltage and reactive fluctuation of a power grid on the opposite side across the country.
The invention provides a regional power grid voltage rapid adjustment method based on an improved sensitivity method, which comprises the following steps:
counting reactive power equipment and reactive power compensation capacity of regional power grid stations, wherein the reactive power equipment and reactive power compensation capacity comprise classifying and summarizing capacitors and reactors of all power grid stations in a region, and the slow phase and incoming phase capabilities of power plants;
searching a historical operation lowest point of the boundary node voltage through an OCS system, backtracking regional power grid load flow based on BPA simulation according to OCS system data, inputting reactive capacitive equipment of a single plant station, and recording a voltage initial value and a voltage value of each voltage detection point when the reactive capacitive equipment of the plant station is gradually added;
calculating the voltage sensitivity of each voltage monitoring point of the station reactive capacitive equipment;
searching a historical operation highest point of the boundary node voltage through an OCS system, tracing regional power grid load flow based on BPA simulation according to OCS system data, inputting reactive inductive equipment of a single plant, and recording a voltage initial value and a voltage value of each voltage detection point when the reactive inductive equipment of the plant is gradually added;
calculating the voltage sensitivity of each voltage monitoring point of the on-off of the inductive equipment of the plant station;
when the regional power grid is put into capacitive reactive power, the improved voltage sensitivity of the capacitor of the ith transformer substation for switching on and off the jth substation is as follows:
when the regional power grid is put into inductive reactive power, the improved voltage sensitivity of the reactor of the ith transformer substation for switching on and off the jth substation is as follows:
wherein,in order to be the voltage sensitivity,to calculateThe initial voltage of the capacitor,the actual voltage value at the moment of the power grid is obtained;
generating an improved sensitivity sequence for switching of reactive equipment of each station of a regional power grid;
and generating a regional power grid voltage regulation scheme meeting the voltage requirement according to the improved sensitivity sequence.
In one embodiment of the invention, the voltage sensitivity isHas the following relation:
wherein k is an integer greater than 1.
In one embodiment of the present invention, further comprising: the voltage value of the jth station after the capacitive reactive power equipment of p stations is put into use is:
in one embodiment of the present invention, further comprising: the voltage value of the jth plant station after inductive reactive equipment of p plant stations is integrated is as follows:
in one embodiment of the invention, generating a regional grid voltage adjustment scheme to meet voltage requirements according to an improved sensitivity sequence comprises: the following optimization algorithm is adopted to obtain the effect that the j node voltage reaches the expected valueThe simplest voltage regulation scheme is as follows:
wherein,is the final voltage per unit value of the ith voltage monitoring point.
The method for quickly adjusting the voltage of the regional power grid based on the improved sensitivity method is based on the voltage sensitivity of each point caused by the switching-in and switching-out of reactive power equipment of the regional power grid, takes the improved sensitivity of each voltage monitoring point of the regional power grid as a sequence, accurately and quickly predicts the voltage of each point of the regional power grid after the switching-in and switching-out of the reactive power equipment, can more accurately predict the voltage change of each point of the regional power grid after the switching-in and switching-out of the reactive power equipment, further obtains an optimal scheme for adjusting the voltage of the regional power grid meeting specific voltage requirements, provides a quick suggestion for adjusting the voltage of the regional power grid for operating personnel, solves the problem that the actual voltage adjustment of the regional power grid excessively depends on the.
Detailed Description
The original regional power grid voltage regulation method is used for switching on and off a capacitor or an electric reactor according to the operation experience of a dispatcher, so that the purpose of voltage regulation is difficult to achieve and the voltage of each point of a regional power grid is not out of limit. If a simulation method is adopted for auxiliary decision making, the power flow and voltage of the power grid need to be traced back, and the simulation software is difficult to quickly trace the voltage and reactive power distribution of the power grid at the moment. The embodiment of the invention provides a regional power grid voltage rapid adjustment method based on an improved sensitivity method, which can effectively solve the defect that the voltage prediction of the traditional sensitivity method is not accurate enough, and comprises the following steps:
s1: and counting reactive power equipment and reactive power compensation capacity of the regional power grid stations, wherein the step of classifying and summarizing capacitors and reactors of the regional power grid stations, and the slow-phase and incoming-phase capabilities of the power plants is included.
Statistical analysis is carried out on the reactive equipment and the reactive capacity of the regional power grid of 220kV or more, and the statistical analysis comprises the step of classifying and summarizing the capacitors and reactors of all power grid stations in the region, the delay and phase advance capacity of power plants. And (4) defining regional power grid voltage monitoring points, wherein the voltage monitoring points comprise stations with reactive equipment.
S2: searching the historical operation lowest point of the boundary node voltage through an OCS system, backtracking regional power grid load flow based on BPA simulation according to OCS system data, inputting reactive capacitive equipment of a single plant station, and recording the voltage initial value and the voltage value of each voltage detection point when the reactive capacitive equipment of the plant station is gradually added.
S3: and calculating the voltage sensitivity of each voltage monitoring point of the on-off of the inductive equipment of the station.
Searching historical operation lowest points of the boundary node voltages through an OCS (electric network operation monitoring system), tracing regional electric network load flow based on BPA simulation according to OCS system data, putting reactive capacitive equipment (transformer substation capacitors and power plant delayed phase operation) of a single plant station on the basis of the mode, and recording initial voltage values of all voltage detection points when the reactive capacitive equipment of the plant station is gradually put into the plant station in an increasing modeAnd a voltage value, wherein m is the number of power plants, n is the number of substations,for the initial voltage of the m power plants,for n substation initial voltages. The voltage of each monitoring point of the reactive equipment on/off is shown in table 1.
TABLE 1 i Voltage of each monitoring point of on/off state of capacitor of transformer substation
Calculating the average value of the voltage increment of each voltage monitoring node, namely the voltage sensitivity of each point of the i-th transformer substation capacitor for switching on and off and the voltage sensitivity of the i-th transformer substation capacitor for switching on and off the j-th stationHas the following relation:
wherein k is an integer greater than 1.
And then sequentially calculating the voltage sensitivity of each voltage monitoring point of the reactive capacitive equipment of other stations.
S4: searching a historical operation highest point of the boundary node voltage through an OCS system, tracing regional power grid load flow based on BPA simulation according to OCS system data, inputting reactive inductive equipment of a single plant station, and recording a voltage initial value and a voltage value of each voltage detection point when the reactive inductive equipment of the plant station is gradually added.
S5: and calculating the voltage sensitivity of each voltage monitoring point of the on-off of the inductive equipment of the station.
Similarly, the highest point of historical operation of the boundary node voltage is searched through the OCS, regional power grid flow backtracking is carried out based on BPA simulation according to OCS data, reactive inductive equipment (a transformer substation reactor and a power plant are operated in a phase-in mode) of a single plant station is input, and the voltage sensitivity of each voltage monitoring point of the reactive inductive equipment of the plant station is calculated in sequence.
S6: when the regional power grid is put into capacitive reactive power, the improved voltage sensitivity of the capacitor of the ith transformer substation for switching on and off the jth substation is as follows:
when the regional power grid is put into inductive reactive power, the improved voltage sensitivity of the reactor of the ith transformer substation for switching on and off the jth substation is as follows:
wherein,in order to be the voltage sensitivity,to calculateThe initial voltage of the capacitor,the actual voltage value at the moment of the power grid.
The sensitivity calculation based on the method is often changed along with the change of the initial voltage, because the regional power grid is still a networking system, the reactive power is enabled to overflow when the initial voltage is too high or too low, when the initial voltage is higher, the capacitive reactive power of the regional power grid with equal capacity is increased (the capacitive reactive power is put into a capacitor or a generator to run in a delayed phase mode), because the voltage is high, the proportion of the reactive power flowing to the adjacent power grid is large, the lifting amplitude of the local voltage is reduced, and namely the voltage sensitivity of each local voltage monitoring point is reduced. Similarly, when the initial voltage is lower, the inductive reactive power of the regional power grid with equal capacity (the input reactance or the generator is put into phase operation) is increased, and the inductive reactive power overflowing into the local power grid by the adjacent power grid is increased, so that the voltage sensitivity of each local voltage monitoring point is reduced.
Therefore, the embodiment of the present invention defines an improved voltage sensitivity, which can more accurately express the actual fluctuation amplitude of the switching and each point voltage of the regional power grid reactive equipment, that is:
when the regional power grid is put into capacitive reactive power, the improved voltage sensitivity of the capacitor of the ith transformer substation for switching on and off the jth substation is as follows:
when the regional power grid is put into inductive reactive power, the improved voltage sensitivity of the reactor of the ith transformer substation for switching on and off the jth substation is as follows:
wherein,in order to be the voltage sensitivity,to calculateThe initial voltage of the capacitor,the actual voltage value at the moment of the power grid.
S7: and generating an improved sensitivity sequence for switching of each station reactive device of the regional power grid.
Through the steps of S1-S6, an improved sensitivity sequence for reactive equipment switching of each station of the regional power grid can be generated, and for the j station, the voltage improved sensitivity sequence is as follows:
s8: and generating a regional power grid voltage regulation scheme meeting the voltage requirement according to the improved sensitivity sequence.
When the regional power grid voltage is adjusted, in order to meet the voltage requirement of a specific plant station, reactive equipment of a plurality of plant stations is switched on and off to carry out comprehensive voltage regulation, and calculation and simulation experience shows that the voltage variation of each monitoring node is not the simple accumulation of the voltage regulation sensitivity of each plant station, and similarly, the voltage sensitivity of each monitoring node is gradually changed along with the increase and decrease of the voltage of the point, and when the system voltage needs to be improved, the voltage sensitivity of each monitoring point is gradually reduced along with the gradual increase of the voltage. When the system voltage needs to be reduced, the voltage sensitivity of each monitoring point is gradually reduced along with the gradual reduction of the voltage. The voltage increase and decrease caused by the switching of the comprehensive reactive power equipment is smaller than the simple accumulated value of the passing sensitivity.
Therefore, in the embodiment of the present invention, the voltage value of the jth plant station after the capacitive reactive device of p plant stations is put into use is:
the voltage value of the jth plant station after inductive reactive equipment of p plant stations is integrated is as follows:
the following optimization algorithm is adopted to obtain the effect that the j node voltage reaches the expected valueThe simplest voltage regulation scheme is as follows:
wherein,and ensuring that the voltage of each node of the system does not exceed the upper limit and the lower limit after the p-step voltage regulation measure, particularly the node switched by the reactive power equipment, for the final voltage per unit value of the ith voltage monitoring point.
Example verification
An example of the improved sensitivity calculated voltage value and simulation value pair of the regional power grid voltage rapid adjustment method based on the improved sensitivity method provided by the embodiment of the invention is shown in table 2.
TABLE 2 comparison of calculated Voltage values with simulated values by improved sensitivity
| Plant station | Calculated value | Simulation value | Extent of deviation | Percent deviation |
| Transformer substation 1 | 235.9 | 233.7 | 0.009326 | 0.93％ |
| Substation 2 | 237.49 | 237.2 | 0.001221 | 0.12％ |
| Power plant 1 | 239.99 | 239 | 0.004125 | 0.41％ |
| Power plant 2 | 247.24 | 245.4 | 0.007442 | 0.74％ |
In summary, the method for rapidly adjusting the voltage of the regional power grid based on the improved sensitivity method provided by the invention is based on the voltage sensitivity of each point caused by the reactive power equipment switching on and off of the regional power grid, takes the improved sensitivity of each voltage monitoring point of the regional power grid as a sequence, accurately and rapidly predicts the voltage change of each point of the regional power grid after the reactive power equipment switching on and off, and further obtains the optimal scheme for adjusting the voltage of the regional power grid meeting the specific voltage requirement, provides a rapid suggestion for adjusting the voltage of the regional power grid for operating personnel, solves the problem that the actual voltage adjustment of the regional power grid excessively depends on the current operation situation of a dispatcher, and can ensure the safe and stable operation of the voltage of the regional power grid.
The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (5)
1. A regional power grid voltage rapid regulation method based on an improved sensitivity method is characterized by comprising the following steps:
counting reactive power equipment and reactive power compensation capacity of regional power grid stations, wherein the reactive power equipment and reactive power compensation capacity comprise classifying and summarizing capacitors and reactors of all power grid stations in a region, and the slow phase and incoming phase capabilities of power plants;
searching a historical operation lowest point of the boundary node voltage through an OCS system, backtracking regional power grid load flow based on BPA simulation according to OCS system data, inputting reactive capacitive equipment of a single plant station, and recording a voltage initial value and a voltage value of each voltage detection point when the reactive capacitive equipment of the plant station is gradually added;
calculating the voltage sensitivity of each voltage monitoring point of the station reactive capacitive equipment;
searching a historical operation highest point of the boundary node voltage through an OCS system, tracing regional power grid load flow based on BPA simulation according to OCS system data, inputting reactive inductive equipment of a single plant, and recording a voltage initial value and a voltage value of each voltage detection point when the reactive inductive equipment of the plant is gradually added;
calculating the voltage sensitivity of each voltage monitoring point of the on-off of the inductive equipment of the plant station;
when the regional power grid is put into capacitive reactive power, the improved voltage sensitivity of the capacitor of the ith transformer substation for switching on and off the jth substation is as follows:
when the regional power grid is put into inductive reactive power, the improved voltage sensitivity of the reactor of the ith transformer substation for switching on and off the jth substation is as follows:
wherein,in order to be the voltage sensitivity,to calculateThe initial voltage of the capacitor,the actual voltage value at the moment of the power grid is obtained;
generating an improved sensitivity sequence for switching of reactive equipment of each station of a regional power grid;
and generating a regional power grid voltage regulation scheme meeting the voltage requirement according to the improved sensitivity sequence.
2. The method for rapidly adjusting the voltage of a regional power grid based on the improved sensitivity method as claimed in claim 1, wherein the voltage sensitivity isHas the following relation:
wherein k is an integer greater than 1.
3. The method for rapidly adjusting the voltage of the regional power grid based on the improved sensitivity method as claimed in claim 1, further comprising: the voltage value of the jth station after the capacitive reactive power equipment of p stations is put into use is:
4. the method for rapidly adjusting the voltage of the regional power grid based on the improved sensitivity method as claimed in claim 3, further comprising: the voltage value of the jth plant station after inductive reactive equipment of p plant stations is integrated is as follows:
5. the improved sensitivity method-based regional power grid voltage rapid adjustment method according to claim 4, wherein the step of generating a regional power grid voltage adjustment scheme meeting the voltage requirement according to the improved sensitivity sequence comprises: the following optimization algorithm is adopted to obtain the effect that the j node voltage reaches the expected valueThe simplest voltage regulation scheme is as follows:
wherein,is the final voltage per unit value of the ith voltage monitoring point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910181570.8A CN109713680B (en) | 2019-03-11 | 2019-03-11 | Regional power grid voltage rapid adjustment method based on improved sensitivity method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910181570.8A CN109713680B (en) | 2019-03-11 | 2019-03-11 | Regional power grid voltage rapid adjustment method based on improved sensitivity method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109713680A true CN109713680A (en) | 2019-05-03 |
| CN109713680B CN109713680B (en) | 2022-05-20 |
Family
ID=66266748
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910181570.8A Active CN109713680B (en) | 2019-03-11 | 2019-03-11 | Regional power grid voltage rapid adjustment method based on improved sensitivity method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109713680B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113131473A (en) * | 2021-04-22 | 2021-07-16 | 云南电网有限责任公司电力科学研究院 | Parameter sensitivity-based method for calculating available transmission capacity of power transmission system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103346572A (en) * | 2013-07-29 | 2013-10-09 | 国家电网公司 | Reactive intelligent control method for power grid based on sensitivity and multiple Agents |
| CN104810834A (en) * | 2015-04-14 | 2015-07-29 | 国家电网公司 | Voltage-sensitivity-based multi-section 500 kV grid reactive compensation switching strategy optimizing method |
| CN105048473A (en) * | 2015-08-14 | 2015-11-11 | 国家电网公司 | Low-voltage reactive equipment voltage sensitivity statistics method in automatic voltage control of transformer station |
| CN106655209A (en) * | 2016-10-21 | 2017-05-10 | 国网上海市电力公司 | Data processing method of reactive voltage in urban power grid and data processing system |
| WO2018115431A1 (en) * | 2016-12-23 | 2018-06-28 | Danmarks Tekniske Universitet | Combined active and reactive power control in an operation of a wind farm |
-
2019
- 2019-03-11 CN CN201910181570.8A patent/CN109713680B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103346572A (en) * | 2013-07-29 | 2013-10-09 | 国家电网公司 | Reactive intelligent control method for power grid based on sensitivity and multiple Agents |
| CN104810834A (en) * | 2015-04-14 | 2015-07-29 | 国家电网公司 | Voltage-sensitivity-based multi-section 500 kV grid reactive compensation switching strategy optimizing method |
| CN105048473A (en) * | 2015-08-14 | 2015-11-11 | 国家电网公司 | Low-voltage reactive equipment voltage sensitivity statistics method in automatic voltage control of transformer station |
| CN106655209A (en) * | 2016-10-21 | 2017-05-10 | 国网上海市电力公司 | Data processing method of reactive voltage in urban power grid and data processing system |
| WO2018115431A1 (en) * | 2016-12-23 | 2018-06-28 | Danmarks Tekniske Universitet | Combined active and reactive power control in an operation of a wind farm |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113131473A (en) * | 2021-04-22 | 2021-07-16 | 云南电网有限责任公司电力科学研究院 | Parameter sensitivity-based method for calculating available transmission capacity of power transmission system |
| CN113131473B (en) * | 2021-04-22 | 2023-04-07 | 云南电网有限责任公司电力科学研究院 | Parameter sensitivity-based method for calculating available transmission capacity of power transmission system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109713680B (en) | 2022-05-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101132107B1 (en) | System for controlling voltage and reactive power in electric power system connected with distributed generation and method for the same | |
| CN103914741A (en) | Line loss intelligent evaluation and assistant decision-making system for power distribution network | |
| CN110263391B (en) | Opportunity constraint-based intelligent soft switch planning method for active power distribution network | |
| CN103326348B (en) | A kind of system improving the analysis of area power grid power supply capacity and overall process on-line monitoring | |
| CN108306282B (en) | Power distribution network automatic planning method with power grid diagnosis problem solving as guide | |
| CN109687469B (en) | Intelligent soft switching voltage control method for active power distribution network based on opportunity constraint planning | |
| CN102097805A (en) | Optimization decision method for comprehensive energy-saving and loss-reducing technology of urban and rural distribution network | |
| Xu et al. | Stochastic multi-objective optimization of photovoltaics integrated three-phase distribution network based on dynamic scenarios | |
| CN109390953A (en) | Low-voltage network reactive voltage control method for coordinating and system containing distributed generation resource and electric car | |
| CN105048473B (en) | Transformer station's automatism voltage control mesolow reactive apparatus voltage sensibility statistical method | |
| Qiu et al. | Comprehensive evaluation of power quality based on improved TOPSIS-RSR method | |
| CN110783913B (en) | Group-based optimal power grid topology online optimization method considering expected accident set | |
| CN109713680B (en) | Regional power grid voltage rapid adjustment method based on improved sensitivity method | |
| CN112508254B (en) | Method for determining investment prediction data of transformer substation engineering project | |
| CN108108871B (en) | Type selection method for wind power plant group power transmission equipment | |
| CN114362246A (en) | Power grid accessible distributed photovoltaic capacity measuring and calculating method | |
| CN106786572B (en) | The grid operation mode that configuration shunt capacitor alleviates voltage dip determines method | |
| CN107563591A (en) | A kind of regional distribution network based on unit style builds priority computational methods | |
| CN105468663A (en) | Cloud model based intelligent decision-making power grid knowledge base building method | |
| CN105207255B (en) | A kind of power system peak regulation computational methods suitable for wind power output | |
| CN114157027B (en) | System and method for regulating and controlling operation of distributed photovoltaic access power distribution network | |
| CN113162056B (en) | Automatic voltage control method and device for extra-high voltage power grid | |
| CN108717597B (en) | Grid engineering operation benefit evaluation method and system for optimizing grid structure | |
| CN111507605A (en) | Power distribution network construction benefit evaluation method and system and computer equipment | |
| CN117578603B (en) | Grid load balancing method based on regional new energy regulation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |