CN115940189B - Phase shifter scheduling control system and method for realizing power grid tide regulation and control - Google Patents
Phase shifter scheduling control system and method for realizing power grid tide regulation and control Download PDFInfo
- Publication number
- CN115940189B CN115940189B CN202310168734.XA CN202310168734A CN115940189B CN 115940189 B CN115940189 B CN 115940189B CN 202310168734 A CN202310168734 A CN 202310168734A CN 115940189 B CN115940189 B CN 115940189B
- Authority
- CN
- China
- Prior art keywords
- phase shifter
- control
- gear
- master station
- scheduling
- 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
- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000005457 optimization Methods 0.000 claims abstract description 57
- 238000011065 in-situ storage Methods 0.000 claims abstract description 13
- 238000004422 calculation algorithm Methods 0.000 claims abstract description 11
- 230000005540 biological transmission Effects 0.000 claims description 13
- 230000009471 action Effects 0.000 claims description 6
- 238000004364 calculation method Methods 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 6
- 238000012544 monitoring process Methods 0.000 claims description 5
- 238000012423 maintenance Methods 0.000 claims description 4
- 230000001276 controlling effect Effects 0.000 abstract description 8
- 230000001105 regulatory effect Effects 0.000 abstract description 5
- 238000003860 storage Methods 0.000 description 14
- 230000006870 function Effects 0.000 description 10
- 238000010586 diagram Methods 0.000 description 4
- 238000004590 computer program Methods 0.000 description 3
- 238000011217 control strategy Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000003491 array Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000001902 propagating effect Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000005577 local transmission Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Images
Landscapes
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The system and the method for realizing the dispatching control of the phase shifter for regulating and controlling the power flow of the power grid comprise the following steps: a scheduling master station, a phase shifter substation and a phase shifter body controller; in a master station control mode, after a scheduling master station selects a control target of a phase shifter, a scheduling master station side obtains a gear instruction of the phase shifter based on a day-ahead predictive optimization algorithm and a day-in real-time control method; the scheduling master station transmits a phase shifter gear instruction to the phase shifter substation, and the phase shifter substation transmits the phase shifter gear instruction to the phase shifter body controller; in an in-situ control mode, the scheduling master station selects a control target of the phase shifter, the scheduling master station transmits the control target to the phase shifter substation, the phase shifter substation obtains a phase shifter gear instruction according to the equipment running state uploaded by the phase shifter body controller, and the phase shifter substation transmits the phase shifter gear instruction to the phase shifter body controller. The invention realizes the three-level control function distribution of the main station, the substation and the equipment, and ensures the flow optimization under the normal operation of the phase shifter and the emergency control function under the fault condition.
Description
Technical Field
The invention belongs to the field of power system dispatching operation, and particularly relates to a phase shifter dispatching control system and method for realizing power grid power flow regulation.
Background
With the continuous increase of the power grid scale in China, the power grid operation efficiency problem in the load-intensive areas is gradually exposed, and the problems of neck blockage of tidal current transmission of key transmission sections, regional bottleneck restriction of local transmission, improvement of power supply capacity and the like occur in part of areas. Because of the scarcity of land resources in the load-dense areas, the difficulty of power grid construction is continuously increased, and the traditional tide control means such as power generation adjustment and load transfer are low in adjustment speed and poor in effect. The phase shifter has the technical advantages of good economy, small occupied area and low operation and maintenance cost, has wider application scenes in the power grid in the load-intensive area, and is not applied in 110kV and above power grids in China at present.
The prior art does not study a dispatching control system of a phase shifter, a main station and a substation are arranged in the existing power grid power flow control system, remote signaling, remote control and other modes are adopted between the main station and the substation, the substation needs to receive dispatching instructions issued by the main station to perform local execution operation of equipment, the phase shifter is used as optimal power flow control equipment, a control strategy needs to be executed in real time according to the running state of the equipment, reliable access with the existing power grid dispatching control system is ensured, and therefore the dispatching control system and the method of the phase shifter for realizing power grid power flow regulation need to be studied.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides a phase shifter scheduling control system and a phase shifter scheduling control method for realizing power grid power flow regulation, which are used for distributing control functions according to three levels of a main station, a substation and equipment and providing technical conditions for exerting power flow optimization under normal operation of the phase shifter and emergency control functions under fault conditions.
The invention adopts the following technical scheme.
The invention provides a phase shifter scheduling control system for realizing power flow regulation and control of a power grid, which comprises the following steps: a scheduling master station, a phase shifter substation and a phase shifter body controller; the phase shifter body controller is used for directly controlling the tap position of the phase shifter and controlling the gear of the phase shifter;
the operation modes of the dispatch control system include: a master station control mode, an in-situ control mode;
in a master station control mode, after a scheduling master station selects a control target of a phase shifter, acquiring a gear instruction of the phase shifter on the side of the scheduling master station based on a day-ahead predictive optimization algorithm and a day-in real-time control method; the scheduling master station transmits a phase shifter gear instruction to the phase shifter substation, and the phase shifter substation transmits the phase shifter gear instruction to the phase shifter body controller;
in an in-situ control mode, the scheduling master station selects a control target of the phase shifter, the scheduling master station transmits the control target to the phase shifter substation, the phase shifter substation obtains a phase shifter gear instruction according to the equipment running state uploaded by the phase shifter body controller, and the phase shifter substation transmits the phase shifter gear instruction to the phase shifter body controller.
The scheduling main station is used for receiving the information uploaded by the phase shifter substation and issuing an instruction to the phase shifter substation;
wherein the information uploaded by the phase shifter substation comprises: the transformer station operating state and the phase shifter operating state; the instructions issued to the phase shifter substation include: and a shifter gear instruction and a loop-closing control instruction.
The scheduling master station includes: the main control position switching module, the control target selection module and the control instruction optimization module;
the main control position switching module is used for generating a phase shifter gear instruction by the dispatching master station under the normal operation condition of the dispatching master station, manually or automatically switching the control position by a dispatcher under the fault or maintenance condition of the dispatching master station, and generating the phase shifter gear instruction by the phase shifter substation;
the control target selection module is used for selecting a control target of the phase shifter according to the operation state of the transformer substation, and the control target comprises: eliminating heavy load and balancing tide;
and the control instruction optimization module is used for obtaining the gear instruction of the phase shifter based on a day-ahead predictive optimization algorithm and a day-ahead real-time control method.
The scheduling master station further includes: a ring closing and opening control module; and the closing and opening loop control module is used for realizing manual operation or automatic operation of closing and opening loops.
In an automatic loop closing and opening control mode, a dispatcher issues a loop closing and opening instruction to a phase shifter substation side at a dispatching master station side, and the phase shifter substation side automatically generates a loop closing and opening sequential control instruction and issues the loop closing and opening sequential control instruction to a phase shifter body controller and related equipment for execution;
in the manual loop closing and opening control mode, a dispatcher issues a phase shifter and related switch action instructions to a phase shifter sub-station side at a dispatching master station side, and the phase shifter sub-station side issues the phase shifter and related switch action instructions to a phase shifter body controller and related equipment to execute.
The phase shifter sub-station includes: the master station control module is used for controlling the module in situ; when the dispatching control system operates in a master station control mode, the master station control module works; when the dispatch control system operates in the on-site control mode, the on-site control module operates.
The master station control module includes: receiving a main station instruction unit and a closed loop sequential control instruction unit;
the receiving main station instruction unit is used for receiving a phase shifter gear instruction issued by the scheduling main station; and the closed loop forward control instruction unit is used for receiving a closed loop control instruction issued by the scheduling master station.
The in-situ control module includes: the power flow emergency control system comprises a control target unit, a control instruction optimizing unit and a power flow emergency control unit; the receiving control target unit is used for receiving a control target of the phase shifter issued by the scheduling master station; and the control instruction optimizing unit is used for obtaining the gear instruction of the phase shifter according to the equipment running state uploaded by the phase shifter body controller.
The master station control module and the local control module respectively comprise: a tide emergency control unit;
and the power flow emergency control unit is used for monitoring the key section or equipment of the power grid in real time, and when the power flow exceeds the limit, the phase shifter substation automatically generates a phase shifter gear and transmits the gear to the phase shifter body controller for execution.
The invention also provides a phase shifter scheduling control method for realizing power grid power flow regulation and control, which comprises daily predictive optimization and daily real-time control; wherein,,
the day-ahead predictive optimization includes: according to the transformer load, photovoltaic and wind power prediction curves at two sides of the phase shifter, taking the minimum total frequency of gear adjustment of the phase shifter as an optimization target, taking the gear of the phase shifter as a control variable, taking the capacity limit of the transformer, the adjustment capacity of the phase shifter and the transmission capacity of a circuit as constraint conditions, establishing an optimization model, and solving by adopting a mixed integer optimization algorithm to obtain a daily predicted running curve of the gear of the phase shifter; and on the basis of the daily real-time control of the predicted running curve of the gear of the phase shifter in the day, the running states of transformers at two sides of the phase shifter are monitored in real time, and the gear of the phase shifter is corrected.
The optimization process of the phase shifter gear daily prediction running curve comprises the following steps:
step A-1, constructing an objective function according to the total adjustment times of the gear of the phase shifter;
step A-2, constructing constraint conditions, including: phase shifter constraint, conventional bus power flow balance constraint, phase shifter equivalent injection power constraint and other constraint conditions;
and A-3, forming a day-ahead optimization model by using the objective function constructed in the step A-1 and the constraint condition constructed in the step A-2, solving the day-ahead optimization model by using a mixed integer optimization algorithm, and obtaining a day-ahead prediction operation curve of the gear of the phase shifter.
The real-time control process of the phase shifter for controlling the gear in the day comprises the following steps:
b-1, obtaining a current optimized time node according to a phase shifter gear day-ahead prediction operation curve
A shifter predicted gear of (a);
b-2, judging whether a transformer on one side of the phase shifter is overloaded or not; if yes, determining that the optimization target is to eliminate the transformer overload at one side of the phase shifter, if not, turning to the step B-3;
b-3, judging whether the transformer on the other side of the phase shifter has active upward transmission; if yes, determining that the optimization target is to eliminate the active power up-feeding of the transformer at the other side of the phase shifter, if not, turning to the step B-4;
b-4, judging whether the load rates of the transformers at the two sides of the phase shifter are unbalanced; if yes, determining that the optimization target is to balance the load rates of the transformers at the two sides of the phase shifter, turning to the step B-5, if not, turning to the step B-6;
b-5, establishing an objective function according to an optimization target, solving the objective function to obtain a real-time control gear, transmitting the real-time control gear to a phase shifter, and ending calculation;
and B-6, according to the predicted gear, transmitting the predicted gear to the phase shifter, and ending the calculation.
Compared with the prior art, the phase shifter control strategy optimization method has the advantages that the phase shifter is ensured to be reliably connected into the existing power grid dispatching control system, and the phase shifter control strategy optimization is realized under different running states of the power grid.
Drawings
FIG. 1 is a schematic diagram of a phase shifter scheduling control system for implementing power grid power flow regulation according to the present invention;
FIG. 2 is a schematic diagram of an exemplary on-load tap-changer voltage-regulating phase shifter according to an embodiment of the invention;
FIG. 3 is a schematic diagram of a typical thyristor-level regulated phase shifter in an embodiment of the invention;
fig. 4 is a schematic diagram of the daily prediction optimization and the daily real-time control proposed by the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. The embodiments described herein are merely some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art without inventive faculty, are within the scope of the invention, based on the spirit of the invention.
The embodiment 1 of the invention discloses a phase shifter dispatching control system for realizing power flow regulation of a power grid, which is used for dispatching control after the phase shifter is accessed into the power grid, and as shown in fig. 1, the phase shifter dispatching control system comprises: a scheduling master station, a phase shifter substation and a phase shifter body controller; the phase shifter body controller is used for directly controlling the tap position of the phase shifter and controlling the gear of the phase shifter.
In a preferred but non-limiting embodiment, the phase shifter includes: the parallel transformer acquires voltage from the secondary side of the series transformer, voltage conversion is carried out on the voltage through the tapping switch, the voltage is connected to the primary side of the series transformer, and voltage with adjustable amplitude is connected in the line through the secondary side of the series transformer in series, so that line power flow adjustment is realized; the phase shifter tap changer comprises an on-load tap changer or a thyristor tap changer as shown in fig. 2 and 3, respectively. The on-load tap-changer voltage-regulating phase shifter shown in fig. 2 includes a parallel transformer and a series transformer, wherein the parallel transformer uses the on-load tap-changer voltage regulation,
、/>
、/>
respectively representing three-phase voltage amplitude values of the node L; />
、/>
、/>
Respectively representing three-phase voltage amplitude values of the transmitting end node S; on-load tap changer voltage regulating type phase shifter providing voltage regulating amount +.>
And->
. The thyristor-graded-adjustment phase shifter shown in fig. 3 comprises parallel-varying and serial-varying, wherein the parallel-varying adopts thyristor-graded adjustment and provides a voltage adjustment amount of +.>
Thyristor graded regulation phase shifter providing voltage regulating quantity +.>
。/>
The operation modes of the dispatch control system include: a master station control mode, an in-situ control mode;
in a master station control mode, after a scheduling master station selects a control target of a phase shifter, acquiring a gear instruction of the phase shifter on the side of the scheduling master station based on a day-ahead predictive optimization algorithm and a day-in real-time control method; the scheduling master station transmits a phase shifter gear instruction to the phase shifter substation, and the phase shifter substation transmits the phase shifter gear instruction to the phase shifter body controller.
In an in-situ control mode, the scheduling master station selects a control target of the phase shifter, the scheduling master station transmits the control target to the phase shifter substation, the phase shifter substation obtains a phase shifter gear instruction according to the equipment running state uploaded by the phase shifter body controller, and the phase shifter substation transmits the phase shifter gear instruction to the phase shifter body controller.
Through the configuration of the scheduling master station and the phase shifter sub-stations, the phase shifter is ensured to be reliably connected into the existing power grid scheduling control system.
The scheduling main station is used for receiving the information uploaded by the phase shifter substation and issuing an instruction to the phase shifter substation;
wherein the information uploaded by the phase shifter substation includes, but is not limited to: the transformer station operating state and the phase shifter operating state; the instructions issued to the phase shifter sub-station include, but are not limited to: and a shifter gear instruction and a loop-closing control instruction.
The scheduling master station includes: the system comprises a main control position switching module, a control target selection module, a control instruction optimization module and a closed loop control module.
The main control position switching module is used for generating a phase shifter gear instruction by the dispatching master station under the normal operation condition of the dispatching master station, manually or automatically switching the control position by a dispatcher under the fault or maintenance condition of the dispatching master station, and generating the phase shifter gear instruction by the phase shifter substation. Through the switching of the main control position, the cooperative control of the main station or the independent control of the sub-stations are realized, and the control requirement of the phase shifter under the condition of normal operation or fault and overhaul of the dispatching main station is met.
The control target selection module is used for selecting a control target of the phase shifter according to the operation state of the transformer substation, and the control target comprises but is not limited to: and eliminating heavy load and balancing tide.
And the control instruction optimization module is used for obtaining the gear instruction of the phase shifter based on a day-ahead predictive optimization algorithm and a day-ahead real-time control method.
Further, the day-ahead predictive optimization includes: according to the transformer load, photovoltaic and wind power prediction curves at two sides of the phase shifter, taking the minimum total frequency of gear adjustment of the phase shifter as an optimization target, taking the gear of the phase shifter as a control variable, taking the capacity limit of the transformer, the adjustment capacity of the phase shifter and the transmission capacity of a circuit as constraint conditions, establishing an optimization model, and solving by adopting a mixed integer optimization algorithm to obtain a daily predicted running curve of the gear of the phase shifter; and on the basis of the daily real-time control of the predicted running curve of the gear of the phase shifter in the day, the running states of transformers at two sides of the phase shifter are monitored in real time, and the gear of the phase shifter is corrected.
And the closing and opening loop control module is used for realizing manual operation or automatic operation of closing and opening loops.
Further, the closed-loop control is applicable to a phase shifter-based power grid closed-loop control operation.
More specifically, in the automatic loop closing and opening control mode, a dispatcher issues a loop closing and opening instruction to the phase shifter substation side at the dispatching master station side, and the phase shifter substation side automatically generates a loop closing and opening sequential control instruction and issues the loop closing and opening sequential control instruction to the phase shifter body controller and related equipment for execution. In the manual loop closing and opening control mode, a dispatcher issues a phase shifter and related switch action instructions to a phase shifter sub-station side at a dispatching master station side, and the phase shifter sub-station side issues the phase shifter and related switch action instructions to a phase shifter body controller and related equipment to execute.
The phase shifter sub-station includes: the master station control module is used for controlling the module in situ; when the dispatching control system operates in a master station control mode, the master station control module works; when the dispatch control system operates in the on-site control mode, the on-site control module operates.
The master station control module includes: receiving a main station instruction unit, a closed loop sequential control instruction unit and a tide emergency control unit; the receiving main station instruction unit is used for receiving a phase shifter gear instruction issued by the scheduling main station; the closed loop forward control instruction unit is used for receiving a closed loop control instruction issued by the scheduling master station; and the power flow emergency control unit is used for monitoring the key section or equipment of the power grid in real time, and when the power flow exceeds the limit, the phase shifter substation automatically generates a phase shifter gear and transmits the gear to the phase shifter body controller for execution.
The in-situ control module includes: the power flow emergency control system comprises a control target unit, a control instruction optimizing unit and a power flow emergency control unit; the receiving control target unit is used for receiving a control target of the phase shifter issued by the scheduling master station; the control instruction optimizing unit is used for obtaining a shifter gear instruction according to the equipment running state uploaded by the shifter body controller; and the power flow emergency control unit is used for monitoring the key section or equipment of the power grid in real time, and when the power flow exceeds the limit, the phase shifter substation automatically generates a phase shifter gear and transmits the gear to the phase shifter body controller for execution.
As shown in fig. 4, embodiment 2 of the present invention discloses a phase shifter scheduling control method for implementing power grid power flow regulation, which is operated in the scheduling control system as described in embodiment 1, as shown in fig. 4, and includes the following steps:
in a further preferred but non-limiting embodiment, the shifter range pre-day predicted operating curve optimization process includes the steps of:
step A-1, constructing an objective function according to the total adjustment times of the gear of the phase shifter;
step A-2, constructing constraint conditions, including: phase shifter constraint, conventional bus power flow balance constraint, phase shifter equivalent injection power constraint and other constraint conditions;
and A-3, forming a day-ahead optimization model by using the objective function constructed in the step A-1 and the constraint condition constructed in the step A-2, solving the day-ahead optimization model by using a mixed integer optimization algorithm, and obtaining a day-ahead prediction operation curve of the gear of the phase shifter.
In a further preferred but non-limiting embodiment, the phase shifter controls an in-gear real-time control process, comprising the steps of:
b-1, obtaining a current optimized time node according to a phase shifter gear day-ahead prediction operation curve
A shifter predicted gear of (a);
b-2, judging whether a transformer on one side of the phase shifter is overloaded or not; if yes, determining that the optimization target is to eliminate the transformer overload at one side of the phase shifter, if not, turning to the step B-3;
b-3, judging whether the transformer on the other side of the phase shifter has active upward transmission; if yes, determining that the optimization target is to eliminate the active power up-feeding of the transformer at the other side of the phase shifter, if not, turning to the step B-4;
b-4, judging whether the load rates of the transformers at the two sides of the phase shifter are unbalanced; if yes, determining that the optimization target is to balance the load rates of the transformers at the two sides of the phase shifter, turning to the step B-5, if not, turning to the step B-6;
b-5, establishing an objective function according to an optimization target, solving the objective function to obtain a real-time control gear, transmitting the real-time control gear to a phase shifter, and ending calculation;
and B-6, according to the predicted gear, transmitting the predicted gear to the phase shifter, and ending the calculation.
The present disclosure may be a system, method, and/or computer program product. The computer program product may include a computer readable storage medium having computer readable program instructions embodied thereon for causing a processor to implement aspects of the present disclosure.
The computer readable storage medium may be a tangible device that can hold and store instructions for use by an instruction execution device. The computer readable storage medium may be, for example, but not limited to, an electronic storage device, a magnetic storage device, an optical storage device, an electromagnetic storage device, a semiconductor storage device, or any suitable combination of the foregoing. More specific examples (a non-exhaustive list) of the computer-readable storage medium would include the following: portable computer disks, hard disks, random Access Memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), static Random Access Memory (SRAM), portable compact disk read-only memory (CD-ROM), digital Versatile Disks (DVD), memory sticks, floppy disks, mechanical coding devices, punch cards or in-groove structures such as punch cards or grooves having instructions stored thereon, and any suitable combination of the foregoing. Computer-readable storage media, as used herein, are not to be construed as transitory signals per se, such as radio waves or other freely propagating electromagnetic waves, electromagnetic waves propagating through waveguides or other transmission media (e.g., optical pulses through fiber optic cables), or electrical signals transmitted through wires.
The computer readable program instructions described herein may be downloaded from a computer readable storage medium to a respective computing/processing device or to an external computer or external storage device over a network, such as the internet, a local area network, a wide area network, and/or a wireless network. The network may include copper transmission cables, fiber optic transmissions, wireless transmissions, routers, firewalls, switches, gateway computers and/or edge servers. The network interface card or network interface in each computing/processing device receives computer readable program instructions from the network and forwards the computer readable program instructions for storage in a computer readable storage medium in the respective computing/processing device.
Computer program instructions for performing the operations of the present disclosure can be assembly instructions, instruction Set Architecture (ISA) instructions, machine-related instructions, microcode, firmware instructions, state setting data, or source or object code written in any combination of one or more programming languages, including an object oriented programming language such as Smalltalk, c++ or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The computer readable program instructions may be executed entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computer (for example, through the Internet using an Internet service provider). In some embodiments, aspects of the present disclosure are implemented by personalizing electronic circuitry, such as programmable logic circuitry, field Programmable Gate Arrays (FPGAs), or Programmable Logic Arrays (PLAs), with state information of computer readable program instructions, which can execute the computer readable program instructions.
Finally, it should be noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that: modifications and equivalents may be made to the specific embodiments of the invention without departing from the spirit and scope of the invention, which is intended to be covered by the claims.
Claims (12)
1. A phase shifter scheduling control system for implementing power grid power flow regulation, comprising: the scheduling master station is characterized in that,
the scheduling control system further includes: a phase shifter substation and a phase shifter body controller; the phase shifter body controller is used for directly controlling the tap position of the phase shifter and controlling the gear of the phase shifter;
the operation modes of the dispatch control system include: a master station control mode, an in-situ control mode;
in a master station control mode, after a dispatching master station selects a control target of a phase shifter, according to a transformer load, a photovoltaic and a wind power prediction curve at two sides of the phase shifter, at the dispatching master station side, taking the minimum total adjustment times of the phase shifter gear as an optimization target, taking the phase shifter gear as a control variable, taking the capacity limit of the transformer, the adjustment capacity of the phase shifter and the transmission capacity of a circuit as constraint conditions, establishing an optimization model and solving to obtain a daily predicted operation curve of the phase shifter gear, and on the basis of the daily predicted operation curve of the phase shifter gear, monitoring the operation states of transformers at two sides of the phase shifter in real time and correcting the phase shifter gear to obtain a phase shifter gear instruction; the scheduling master station transmits a phase shifter gear instruction to the phase shifter substation, and the phase shifter substation transmits the phase shifter gear instruction to the phase shifter body controller;
in an in-situ control mode, the scheduling master station selects a control target of the phase shifter, the scheduling master station transmits the control target to the phase shifter substation, the phase shifter substation obtains a phase shifter gear instruction according to the equipment running state uploaded by the phase shifter body controller, and the phase shifter substation transmits the phase shifter gear instruction to the phase shifter body controller.
2. The phase shifter scheduling control system for implementing power flow regulation of claim 1, wherein,
the scheduling main station is used for receiving the information uploaded by the phase shifter substation and issuing an instruction to the phase shifter substation;
wherein the information uploaded by the phase shifter substation comprises: the transformer station operating state and the phase shifter operating state; the instructions issued to the phase shifter substation include: and a shifter gear instruction and a loop-closing control instruction.
3. The phase shifter scheduling control system for implementing power flow regulation according to claim 2, wherein,
the scheduling master station includes: the main control position switching module, the control target selection module and the control instruction optimization module;
the main control position switching module is used for generating a phase shifter gear instruction by the dispatching master station under the normal operation condition of the dispatching master station, manually or automatically switching the control position by a dispatcher under the fault or maintenance condition of the dispatching master station, and generating the phase shifter gear instruction by the phase shifter substation;
the control target selection module is used for selecting a control target of the phase shifter according to the operation state of the transformer substation, and the control target comprises: eliminating heavy load and balancing tide;
and the control instruction optimization module is used for obtaining the gear instruction of the phase shifter based on the daily prediction optimization and the daily real-time control.
4. The phase shifter scheduling control system for implementing power flow regulation according to claim 2, wherein,
the scheduling master station further includes: a ring closing and opening control module; and the closing and opening loop control module is used for realizing manual operation or automatic operation of closing and opening loops.
5. The phase shifter scheduling control system for power flow regulation according to claim 4, wherein,
in an automatic loop closing and opening control mode, a dispatcher issues a loop closing and opening instruction to a phase shifter substation side at a dispatching master station side, and the phase shifter substation side automatically generates a loop closing and opening sequential control instruction and issues the loop closing and opening sequential control instruction to a phase shifter body controller and related equipment for execution;
in the manual loop closing and opening control mode, a dispatcher issues a phase shifter and related switch action instructions to a phase shifter sub-station side at a dispatching master station side, and the phase shifter sub-station side issues the phase shifter and related switch action instructions to a phase shifter body controller and related equipment to execute.
6. The phase shifter scheduling control system for implementing power flow regulation of claim 1, wherein,
the phase shifter sub-station includes: the master station control module is used for controlling the module in situ; when the dispatching control system operates in a master station control mode, the master station control module works; when the dispatch control system operates in the on-site control mode, the on-site control module operates.
7. The phase shifter scheduling control system for power grid power flow regulation according to claim 6, wherein,
the master station control module includes: receiving a main station instruction unit and a closed loop sequential control instruction unit;
the receiving main station instruction unit is used for receiving a phase shifter gear instruction issued by the scheduling main station; and the closed loop forward control instruction unit is used for receiving a closed loop control instruction issued by the scheduling master station.
8. The phase shifter scheduling control system for power grid power flow regulation according to claim 6, wherein,
the in-situ control module includes: the power flow emergency control system comprises a control target unit, a control instruction optimizing unit and a power flow emergency control unit; the receiving control target unit is used for receiving a control target of the phase shifter issued by the scheduling master station; and the control instruction optimizing unit is used for obtaining the gear instruction of the phase shifter according to the equipment running state uploaded by the phase shifter body controller.
9. The phase shifter scheduling control system for power grid power flow regulation according to claim 6, wherein,
the master station control module and the local control module respectively comprise: a tide emergency control unit;
and the power flow emergency control unit is used for monitoring the key section or equipment of the power grid in real time, and when the power flow exceeds the limit, the phase shifter substation automatically generates a phase shifter gear and transmits the gear to the phase shifter body controller for execution.
10. A phase shifter scheduling control method for realizing power grid power flow regulation, which is operated in the system of any one of claims 1 to 9, is characterized in that,
the scheduling control method comprises the steps of daily predictive optimization and daily real-time control; wherein,,
the day-ahead predictive optimization includes: according to the transformer load, photovoltaic and wind power prediction curves at two sides of the phase shifter, taking the minimum total frequency of gear adjustment of the phase shifter as an optimization target, taking the gear of the phase shifter as a control variable, taking the capacity limit of the transformer, the adjustment capacity of the phase shifter and the transmission capacity of a circuit as constraint conditions, establishing an optimization model, and solving by adopting a mixed integer optimization algorithm to obtain a daily predicted running curve of the gear of the phase shifter; and on the basis of the daily real-time control of the predicted running curve of the gear of the phase shifter in the day, the running states of transformers at two sides of the phase shifter are monitored in real time, and the gear of the phase shifter is corrected.
11. The method for controlling the scheduling of the phase shifter for realizing the power flow regulation of the power grid according to claim 10, wherein,
the optimization process of the phase shifter gear daily prediction running curve comprises the following steps:
step A-1, constructing an objective function according to the total number of gear adjustment times of the phase shifter;
step A-2, constructing constraint conditions, including: transformer capacity limitation, phase shifter regulation capability, line delivery capacity;
and A-3, forming a day-ahead optimization model by using the objective function constructed in the step A-1 and the constraint condition constructed in the step A-2, solving the day-ahead optimization model by using a mixed integer optimization algorithm, and obtaining a day-ahead prediction operation curve of the gear of the phase shifter.
12. The method for controlling the scheduling of the phase shifter for realizing the power flow regulation of the power grid according to claim 10, wherein,
the real-time control process of the phase shifter in the gear stage in the day comprises the following steps:
step B-1, predicting according to the day front of the gear of the phase shifterObtaining current optimized time node by running curve
A shifter predicted gear of (a);
b-2, judging whether a transformer on one side of the phase shifter is overloaded or not; if yes, determining that the optimization target is to eliminate the transformer overload at one side of the phase shifter, if not, turning to the step B-3;
b-3, judging whether the transformer on the other side of the phase shifter has active upward transmission; if yes, determining that the optimization target is to eliminate the active power up-feeding of the transformer at the other side of the phase shifter, if not, turning to the step B-4;
b-4, judging whether the load rates of the transformers at the two sides of the phase shifter are unbalanced; if yes, determining that the optimization target is to balance the load rates of the transformers at the two sides of the phase shifter, turning to the step B-5, if not, turning to the step B-6;
b-5, establishing an objective function according to an optimization target, solving the objective function to obtain a real-time control gear, transmitting the real-time control gear to a phase shifter, and ending calculation;
and B-6, according to the predicted gear, transmitting the predicted gear to the phase shifter, and ending the calculation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310168734.XA CN115940189B (en) | 2023-02-27 | 2023-02-27 | Phase shifter scheduling control system and method for realizing power grid tide regulation and control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310168734.XA CN115940189B (en) | 2023-02-27 | 2023-02-27 | Phase shifter scheduling control system and method for realizing power grid tide regulation and control |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115940189A CN115940189A (en) | 2023-04-07 |
| CN115940189B true CN115940189B (en) | 2023-06-13 |
Family
ID=86651043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310168734.XA Active CN115940189B (en) | 2023-02-27 | 2023-02-27 | Phase shifter scheduling control system and method for realizing power grid tide regulation and control |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115940189B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116094491B (en) * | 2023-04-10 | 2023-06-23 | 国网江苏省电力有限公司电力科学研究院 | Phase shifter topological structure based on thyristor voltage regulation and application method thereof |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105515011B (en) * | 2015-12-04 | 2018-06-26 | 国网浙江省电力公司绍兴供电公司 | The control method for coordinating of ground county AVC cooperations |
| CN106444589A (en) * | 2016-12-06 | 2017-02-22 | 国网浙江省电力公司绍兴供电公司 | 30-degree phase angle difference distributing line loop closing and opening operation system |
| CN109861276A (en) * | 2019-01-14 | 2019-06-07 | 中国电力科学研究院有限公司 | A kind of flexible direct current power grid hydroenergy storage station wide area power-generating control system |
-
2023
- 2023-02-27 CN CN202310168734.XA patent/CN115940189B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN115940189A (en) | 2023-04-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103474991B (en) | Based on the power distribution network global optimization dispatching method of time scale | |
| US20160239032A1 (en) | A progressive optimization dispatching method of smart distribution system | |
| JP6063632B2 (en) | System and method for operating a capacitor bank | |
| CN115940189B (en) | Phase shifter scheduling control system and method for realizing power grid tide regulation and control | |
| CN107451670B (en) | Day-ahead hierarchical coordination scheduling method for active power distribution network | |
| CN107196316B (en) | Multi-stage reactive voltage coordination control method in active power distribution network | |
| CN105515045A (en) | Multi agent-based power transmission and distribution network and distributed type supply source coordinated control system and method | |
| Panda et al. | A conceptual review on transformation of micro‐grid to virtual power plant: Issues, modeling, solutions, and future prospects | |
| CN104269847A (en) | Flexible looped network control system operation and power flow optimization method | |
| CN110690702A (en) | Active power distribution network optimal scheduling and operation method considering comprehensive bearing capacity | |
| CN111452649A (en) | Public charging pile management method based on platform area load monitoring and prediction | |
| CN116094032A (en) | High-permeability photovoltaic access power distribution network Yun Bianduan cooperative energy self-balancing method | |
| CN110620380A (en) | Virtual power plant control system | |
| Bryans et al. | Real time control of a distribution connected MVDC link (ANGLE-DC) | |
| CN103259280A (en) | Achievement method for direct current centralized control center applied to large-scale direct current output | |
| Švenda et al. | Volt var watt optimization in distribution network with high penetration of renewable energy sources and electric vehicles | |
| CA2980321C (en) | Systems and methods for local demand optimization | |
| CN115940165B (en) | Phase shifter control method and system for realizing power flow control between transformers | |
| Svenda et al. | Voltage improvement in distribution networks with high penetration of electric Vehicles and renewable energy sources | |
| Bagheri et al. | A Practical Approach for Coordinated Transmission Switching and OLTCs’ Tap Adjustment: DIgSILENT-Based Improved PSO Algorithm | |
| Distribution | Distribution System Operability Framework | |
| CN118157150B (en) | Voltage optimization analysis method and system based on reactive resource aggregation technology of power distribution network | |
| Liu et al. | The “Source-Network-Load” Interactive System and Application Under the Energy Internet | |
| Farag et al. | A multi-agent voltage and reactive power control for multiple feeders with distributed generation | |
| Zhichun et al. | Research on Orderly Charging Strategy of Electric Vehicles Based on Intelligent Fusion Terminal |
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 |