CN220234269U - One-path standby generator set and multi-path commercial power grid-connected switching control system - Google Patents
One-path standby generator set and multi-path commercial power grid-connected switching control system Download PDFInfo
- Publication number
- CN220234269U CN220234269U CN202321630324.4U CN202321630324U CN220234269U CN 220234269 U CN220234269 U CN 220234269U CN 202321630324 U CN202321630324 U CN 202321630324U CN 220234269 U CN220234269 U CN 220234269U
- Authority
- CN
- China
- Prior art keywords
- grid
- cabinet
- commercial power
- controller
- generator set
- 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.)
- Active
Links
- 238000010248 power generation Methods 0.000 claims abstract description 34
- 238000004891 communication Methods 0.000 claims abstract description 13
- 238000005070 sampling Methods 0.000 claims abstract description 4
- 230000002159 abnormal effect Effects 0.000 claims description 3
- 230000006855 networking Effects 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000012795 verification Methods 0.000 description 1
Landscapes
- Supply And Distribution Of Alternating Current (AREA)
- Stand-By Power Supply Arrangements (AREA)
Abstract
The utility model provides a grid-connected switching control system for a standby generator set and multiple commercial powers, which comprises a high-voltage generator set, a high-voltage switch cabinet, a PT cabinet, a feeder cabinet, a grid-connected cabinet, a main control cabinet and a direct current screen, wherein the high-voltage switch cabinet is connected with the power supply unit; the power generation output end of the high-voltage generator set is connected to the inlet wire end of the high-voltage switch cabinet through a high-voltage wire, the control circuit is connected to the control end of the high-voltage switch cabinet, the control power wire of the high-voltage switch cabinet is connected to the direct-current screen, and the set voltage sampling wire is connected to the PT cabinet; the master control cabinet is connected with the controllers, and the PLC of the master control cabinet controls the on-off state of a bus-bar switch group of a power generation output line of the high-voltage generator set; the grid-connected cabinet is connected with the high-voltage switch cabinet, the commercial power breaker group and the power generation feeder line output breaker of the high-voltage power generation group; the parallel operation controller group in the grid-connected cabinet is connected with the grid-connected controller group through a CAN communication line; a grid-connected controller group in the grid-connected cabinet controls the on-off state of a commercial power breaker group; the utility model solves the problem that one standby generator set is difficult to switch with multiple commercial power grid connection.
Description
Technical Field
The utility model relates to the technical field of power grid equipment, in particular to a grid-connected switching control system for one-path standby generator set and multiple paths of commercial power.
Background
In a power station project or a hospital power distribution project, when the power supply is higher than the primary power distribution requirement, the diesel generator is used as a standby power supply when three or more paths of power supply are needed, and under the condition, the generator set is normally connected with one path of commercial power in a grid mode, and a common grid-connected controller can be realized; in the second case, one line of commercial power is normal, the generator set needs to be switched with the second line of commercial power and the third line of commercial power in parallel, so that the requirement of combining functions of the generator set and the plurality of lines of commercial power appears, the common and one-network controller is insufficient, and a plurality of grid-connected controllers and a main control cabinet are needed to participate to form a complete control system.
Aiming at the problem of grid-connected switching of one standby generator set and multiple commercial powers and solving the problem of grid-connected switching of one standby generator set and one commercial power in the prior art, the utility model provides a complete controller system, solves the problem of grid-connected switching of one standby generator set and multiple commercial powers and realizes a complete logic controller system through repeated experiments, tests and verification.
Disclosure of Invention
The utility model provides a grid-connected switching control system for one-path standby generator set and multiple paths of commercial power, which solves the problem of difficult grid-connected switching of the one-path standby generator set and the multiple paths of commercial power.
The utility model adopts the following technical scheme.
The switching control system comprises a high-voltage generator set, a high-voltage switch cabinet, a PT cabinet, a feeder cabinet, a grid-connected cabinet, a main control cabinet and a direct current screen; the power generation output end of the high-voltage generator set is connected to the wire inlet end of the high-voltage switch cabinet through a high-voltage wire, the control circuit of the high-voltage generator set is connected to the control end of the high-voltage switch cabinet, the control power wire of the high-voltage switch cabinet is connected to the direct-current screen, and the set voltage sampling wire is connected to the PT cabinet; the master control cabinet is connected with a plurality of controllers in the switching control system through network cables, and the PLC of the master control cabinet controls the on-off state of a bus-bar switch group of a power generation output line of the high-voltage generator set;
the grid-connected cabinet is connected with the high-voltage switch cabinet, the commercial power breaker group and the power generation feeder line output breaker of the high-voltage power generation group; the parallel operation controller group in the grid-connected cabinet is connected with the grid-connected controller group through a CAN communication line; and a grid-connected controller group in the grid-connected cabinet controls the on-off state of the commercial power breaker group.
The switching control system is used for grid-connected switching of three paths of commercial power; the commercial power breaker group comprises a commercial power breaker MB25 of a first commercial power, a commercial power breaker MB31 of a second commercial power and a commercial power breaker MB32 of a third commercial power;
the power generation feeder line output circuit breaker of the high-voltage power generation group is MB25; the bus-connected switch group of the power generation output line of the high-voltage power generation unit comprises a bus-connected switch BTB33, a bus-connected switch BTB34 and a bus-connected switch BTB35;
the grid-connected controller group comprises a first grid-connected controller (1), a second grid-connected controller (2), a third grid-connected controller (3), a fourth grid-connected controller and a fifth grid-connected controller;
the parallel operation controller group comprises a first parallel operation controller, a second parallel operation controller, a third parallel operation controller, a fourth parallel operation controller, a fifth parallel operation controller and a sixth parallel operation controller;
the first parallel controller controls a commercial power breaker MB25 and a power generation feeder line output breaker TB25; the second grid-connected controller controls a commercial power breaker MB31; the third grid-connected controller controls a commercial power breaker MB32; the master control cabinet PLC controls the bus-bar switch BTB33, the bus-bar switch BTB34 and the bus-bar switch BTB35;
the first parallel-operation controller is connected with the first parallel-operation controller, the second parallel-operation controller and the third parallel-operation controller; the third grid-connected controller is connected with the fourth parallel operation controller; the fifth grid-connected controller is connected with the fifth parallel operation controller.
The communication link of the CAN communication line in the grid-connected cabinet comprises a plurality of sections of communication connection.
The high-voltage generator set is a diesel generator set, and the number of parallel operation controllers is not more than 32.
The grid-connected switching control system works under the peak regulation working condition when the first path of commercial power is normal, or the generator set and the second path of commercial power and the third path of commercial power are uninterruptedly switched to the operation working condition when the second path of commercial power and the third path of commercial power are abnormal.
When the grid-connected switching control system works under a peak-shaving working condition, a master control cabinet PLC controls a closed bus-bar switch BTB35, the master control cabinet PLC sends a peak-shaving instruction to a first grid-shaving controller, and sends a Chai Fa total power set point to the first grid-shaving controller according to a scheduling requirement, so that a diesel generator set is automatically started in a loaded mode, a Chai Fa set synchronously closes a power generation feeder line to output a breaker TB25 according to the master control cabinet peak-shaving instruction, and the set enters peak-shaving operation; when the working condition needs to be stopped: the master control cabinet PLC sends an AMF mode to the first networking controller, the diesel generating set is unloaded and stopped, and the master control cabinet PLC controls the disconnection of the bus-connected switch BTB35.
When the grid-connected switching control system works under the condition that a generator set, a second path of commercial power and a third path of commercial power are continuously switched, a master control cabinet PLC sends a BTB35 switching-off instruction, BTB32 and BTB33 switching-on instructions, sends an AMF mode, sends a starting instruction to a first grid-connected controller, sends a starting instruction to a set controller of a high-voltage generator set, and starts the high-voltage generator set to operate in a load mode;
when one path of commercial power is recovered to be normal, the main control cabinet PLC reads the commercial power frequency, sends the read frequency data to the high-voltage generator set controller, and when the commercial power controller detects that the frequency data is in the synchronous range, the commercial power circuit breaker is switched on, the main control cabinet PLC sends a BTB32 and BTB33 switching-off instruction to disconnect the high-voltage generator set, and sends a shutdown command to shutdown the high-voltage generator set.
The utility model provides a set of controller system with complete logic, which solves the problem of grid-connected switching between one standby generator set and multiple commercial powers.
Drawings
The utility model is described in further detail below with reference to the attached drawings and detailed description:
FIG. 1 is a schematic diagram of the principles of the present utility model;
fig. 2 is a system schematic diagram of the control system of the present utility model.
Detailed Description
As shown in the figure, the switching control system comprises a high-voltage generator set, a high-voltage switch cabinet, a PT cabinet, a feeder cabinet, a grid-connected cabinet, a main control cabinet and a direct current screen; the power generation output end of the high-voltage generator set is connected to the wire inlet end of the high-voltage switch cabinet through a high-voltage wire, the control circuit of the high-voltage generator set is connected to the control end of the high-voltage switch cabinet, the control power wire of the high-voltage switch cabinet is connected to the direct-current screen, and the set voltage sampling wire is connected to the PT cabinet; the master control cabinet is connected with a plurality of controllers in the switching control system through network cables, and the PLC of the master control cabinet controls the on-off state of a bus-bar switch group of a power generation output line of the high-voltage generator set;
the grid-connected cabinet is connected with the high-voltage switch cabinet, the commercial power breaker group and the power generation feeder line output breaker of the high-voltage power generation group; the parallel operation controller group in the grid-connected cabinet is connected with the grid-connected controller group through a CAN communication line; and a grid-connected controller group in the grid-connected cabinet controls the on-off state of the commercial power breaker group.
The switching control system is used for grid-connected switching of three paths of commercial power; the commercial power breaker group comprises a commercial power breaker MB25 of a first commercial power, a commercial power breaker MB31 of a second commercial power and a commercial power breaker MB32 of a third commercial power;
the power generation feeder line output circuit breaker of the high-voltage power generation group is MB25; the bus-connected switch group of the power generation output line of the high-voltage power generation unit comprises a bus-connected switch BTB33, a bus-connected switch BTB34 and a bus-connected switch BTB35;
the grid-connected controller group comprises a first grid-connected controller 1, a second grid-connected controller 2, a third grid-connected controller 3, a fourth grid-connected controller and a fifth grid-connected controller;
the parallel operation controller group comprises a first parallel operation controller, a second parallel operation controller, a third parallel operation controller, a fourth parallel operation controller, a fifth parallel operation controller and a sixth parallel operation controller;
the first parallel controller controls a commercial power breaker MB25 and a power generation feeder line output breaker TB25; the second grid-connected controller controls a commercial power breaker MB31; the third grid-connected controller controls a commercial power breaker MB32; the master control cabinet PLC controls the bus-bar switch BTB33, the bus-bar switch BTB34 and the bus-bar switch BTB35;
the first parallel-operation controller is connected with the first parallel-operation controller, the second parallel-operation controller and the third parallel-operation controller; the third grid-connected controller is connected with the fourth parallel operation controller; the fifth grid-connected controller is connected with the fifth parallel operation controller.
The communication link of the CAN communication line in the grid-connected cabinet comprises a plurality of sections of communication connection.
The high-voltage generator set is a diesel generator set, and the number of parallel operation controllers is not more than 32.
The grid-connected switching control system works under the peak regulation working condition when the first path of commercial power is normal, or the generator set and the second path of commercial power and the third path of commercial power are uninterruptedly switched to the operation working condition when the second path of commercial power and the third path of commercial power are abnormal.
When the grid-connected switching control system works under a peak-shaving working condition, a master control cabinet PLC controls a closed bus-bar switch BTB35, the master control cabinet PLC sends a peak-shaving instruction to a first grid-shaving controller, and sends a Chai Fa total power set point to the first grid-shaving controller according to a scheduling requirement, so that a diesel generator set is automatically started in a loaded mode, a Chai Fa set synchronously closes a power generation feeder line to output a breaker TB25 according to the master control cabinet peak-shaving instruction, and the set enters peak-shaving operation; when the working condition needs to be stopped: the master control cabinet PLC sends an AMF mode to the first networking controller, the diesel generating set is unloaded and stopped, and the master control cabinet PLC controls the disconnection of the bus-connected switch BTB35.
When the grid-connected switching control system works under the condition that a generator set, a second path of commercial power and a third path of commercial power are continuously switched, a master control cabinet PLC sends a BTB35 switching-off instruction, BTB32 and BTB33 switching-on instructions, sends an AMF mode, sends a starting instruction to a first grid-connected controller, sends a starting instruction to a set controller of a high-voltage generator set, and starts the high-voltage generator set to operate in a load mode;
when one path of commercial power is recovered to be normal, the main control cabinet PLC reads the commercial power frequency, sends the read frequency data to the high-voltage generator set controller, and when the commercial power controller detects that the frequency data is in the synchronous range, the commercial power circuit breaker is switched on, the main control cabinet PLC sends a BTB32 and BTB33 switching-off instruction to disconnect the high-voltage generator set, and sends a shutdown command to shutdown the high-voltage generator set.
Claims (7)
1. A standby generator set and multi-path commercial power grid-connected switching control system is characterized in that: the switching control system comprises a high-voltage generator set, a high-voltage switch cabinet, a PT cabinet, a feeder cabinet, a grid-connected cabinet, a main control cabinet and a direct current screen; the power generation output end of the high-voltage generator set is connected to the wire inlet end of the high-voltage switch cabinet through a high-voltage wire, the control circuit of the high-voltage generator set is connected to the control end of the high-voltage switch cabinet, the control power wire of the high-voltage switch cabinet is connected to the direct-current screen, and the set voltage sampling wire is connected to the PT cabinet; the master control cabinet is connected with a plurality of controllers in the switching control system through network cables, and the PLC of the master control cabinet controls the on-off state of a bus-bar switch group of a power generation output line of the high-voltage generator set;
the grid-connected cabinet is connected with the high-voltage switch cabinet, the commercial power breaker group and the power generation feeder line output breaker of the high-voltage power generation group; the parallel operation controller group in the grid-connected cabinet is connected with the grid-connected controller group through a CAN communication line; and a grid-connected controller group in the grid-connected cabinet controls the on-off state of the commercial power breaker group.
2. The system for switching between one-way standby generator set and multiple-way mains supply according to claim 1, wherein the system is characterized in that: the switching control system is used for grid-connected switching of three paths of commercial power; the commercial power breaker group comprises a commercial power breaker MB25 of a first commercial power, a commercial power breaker MB31 of a second commercial power and a commercial power breaker MB32 of a third commercial power;
the power generation feeder line output circuit breaker of the high-voltage power generation group is MB25; the bus-connected switch group of the power generation output line of the high-voltage power generation unit comprises a bus-connected switch BTB33, a bus-connected switch BTB34 and a bus-connected switch BTB35;
the grid-connected controller group comprises a first grid-connected controller (1), a second grid-connected controller (2), a third grid-connected controller (3), a fourth grid-connected controller and a fifth grid-connected controller;
the parallel operation controller group comprises a first parallel operation controller, a second parallel operation controller, a third parallel operation controller, a fourth parallel operation controller, a fifth parallel operation controller and a sixth parallel operation controller;
the first parallel controller controls a commercial power breaker MB25 and a power generation feeder line output breaker TB25; the second grid-connected controller controls a commercial power breaker MB31; the third grid-connected controller controls a commercial power breaker MB32; the master control cabinet PLC controls the bus-bar switch BTB33, the bus-bar switch BTB34 and the bus-bar switch BTB35;
the first parallel-operation controller is connected with the first parallel-operation controller, the second parallel-operation controller and the third parallel-operation controller; the third grid-connected controller is connected with the fourth parallel operation controller; the fifth grid-connected controller is connected with the fifth parallel operation controller.
3. The system for switching between one-way standby generator set and multiple-way mains supply according to claim 2, wherein the system is characterized in that: the communication link of the CAN communication line in the grid-connected cabinet comprises a plurality of sections of communication connection.
4. The system for switching between one-way standby generator set and multiple-way mains supply according to claim 2, wherein the system is characterized in that: the high-voltage generator set is a diesel generator set, and the number of parallel operation controllers is not more than 32.
5. The system for switching between a standby generator set and multiple mains connections according to claim 4, wherein: the grid-connected switching control system works under the peak regulation working condition when the first path of commercial power is normal, or the generator set and the second path of commercial power and the third path of commercial power are uninterruptedly switched to the operation working condition when the second path of commercial power and the third path of commercial power are abnormal.
6. The system for switching between a standby generator set and multiple mains connections according to claim 5, wherein: when the grid-connected switching control system works under a peak-shaving working condition, a master control cabinet PLC controls a closed bus-bar switch BTB35, the master control cabinet PLC sends a peak-shaving instruction to a first grid-shaving controller, and sends a Chai Fa total power set point to the first grid-shaving controller according to a scheduling requirement, so that a diesel generator set is automatically started in a loaded mode, a Chai Fa set synchronously closes a power generation feeder line to output a breaker TB25 according to the master control cabinet peak-shaving instruction, and the set enters peak-shaving operation; when the working condition needs to be stopped: the master control cabinet PLC sends an AMF mode to the first networking controller, the diesel generating set is unloaded and stopped, and the master control cabinet PLC controls the disconnection of the bus-connected switch BTB35.
7. The system for switching between a standby generator set and multiple mains connections according to claim 5, wherein: when the grid-connected switching control system works under the condition that a generator set, a second path of commercial power and a third path of commercial power are continuously switched, a master control cabinet PLC sends a BTB35 switching-off instruction, BTB32 and BTB33 switching-on instructions, sends an AMF mode, sends a starting instruction to a first grid-connected controller, sends a starting instruction to a set controller of a high-voltage generator set, and starts the high-voltage generator set to operate in a load mode;
when one path of commercial power is recovered to be normal, the main control cabinet PLC reads the commercial power frequency, sends the read frequency data to the high-voltage generator set controller, and when the commercial power controller detects that the frequency data is in the synchronous range, the commercial power circuit breaker is switched on, the main control cabinet PLC sends a BTB32 and BTB33 switching-off instruction to disconnect the high-voltage generator set, and sends a shutdown command to shutdown the high-voltage generator set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321630324.4U CN220234269U (en) | 2023-06-26 | 2023-06-26 | One-path standby generator set and multi-path commercial power grid-connected switching control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321630324.4U CN220234269U (en) | 2023-06-26 | 2023-06-26 | One-path standby generator set and multi-path commercial power grid-connected switching control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220234269U true CN220234269U (en) | 2023-12-22 |
Family
ID=89181912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321630324.4U Active CN220234269U (en) | 2023-06-26 | 2023-06-26 | One-path standby generator set and multi-path commercial power grid-connected switching control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220234269U (en) |
-
2023
- 2023-06-26 CN CN202321630324.4U patent/CN220234269U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108923409B (en) | DC power supply system | |
| CN214204284U (en) | Multi-energy hybrid power station system suitable for multiple application scenes | |
| CN111245023B (en) | Microgrid parallel-parallel operation switching system and switching method | |
| CN115776130A (en) | Grid-connected and off-grid switching method, energy storage converter, energy storage system and power system | |
| CN111416389A (en) | Backpressure machine switching system | |
| CN111064222A (en) | Power supply vehicle parallel operation and multiple parallel operation system and operation method thereof | |
| CN202906774U (en) | High-power photovoltaic inverter with automatic power-off auxiliary power supply circuit | |
| CN211239348U (en) | Power supply vehicle parallel operation and repeated parallel operation system | |
| CN110190585B (en) | B-type residual current monitoring and action circuit breaker with wireless transmission function | |
| CN112803407B (en) | Low-voltage distribution network seamless loop-closing power transfer method and system based on parallel converters | |
| CN220234269U (en) | One-path standby generator set and multi-path commercial power grid-connected switching control system | |
| CN210927126U (en) | Little grid system of alternating current-direct current for wisdom energy station | |
| JP4193091B2 (en) | Control method of combined fuel cell power generation system | |
| CN201298734Y (en) | Main electrical wiring for starting fuel gas and steam combined cycle generator set in two-drive-one mode with variable frequency | |
| CN111162530B (en) | Power access system for generator outlet to access peak shaving facility | |
| CN112039054B (en) | Power generation system adjusting method based on electric power spot mode | |
| CN110504670B (en) | Power supply system and power supply method of direct-current power distribution network | |
| CN114744748A (en) | Logic control method of data center diesel engine parallel machine control system | |
| CN211321019U (en) | Service power interconnection system among multiple thermal power generating units | |
| CN108899911B (en) | Direct current power transformation system | |
| CN218829112U (en) | Power distribution system of large-scale data center high reliability power supply | |
| CN111509778A (en) | Diesel generating set is as multichannel commercial power stand-by power supply parallel operation, and power supply system is incorporated into power networks | |
| CN111181244A (en) | Service power interconnection system among multiple thermal power generating units and operation control method | |
| CN220711145U (en) | Parallel-to-off-grid switching circuit of energy storage inverter, energy storage inverter and photovoltaic energy storage system | |
| CN210806744U (en) | Power access system for accessing generator outlet to peak regulation facility |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |