CN107276101A - A kind of tertiary voltage control system based on soft sectoring - Google Patents
A kind of tertiary voltage control system based on soft sectoring Download PDFInfo
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- CN107276101A CN107276101A CN201710428911.8A CN201710428911A CN107276101A CN 107276101 A CN107276101 A CN 107276101A CN 201710428911 A CN201710428911 A CN 201710428911A CN 107276101 A CN107276101 A CN 107276101A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
- H02J3/16—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by adjustment of reactive power
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- 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
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Abstract
The invention discloses a kind of tertiary voltage control system based on soft sectoring, belong to automatic voltage control system technical field, the tertiary voltage control system based on soft sectoring, including three-stage control system, second control system, first class control system, the three-stage control system is connected with second control system and controls second control system, and the second control system is connected with first class control system and controls first class control system.The division that the tertiary voltage control system based on soft sectoring of the present invention solves existing tertiary voltage control pattern control area is to be solidificated in parametric form in hardware control, it is difficult to adapt to continuing to develop with real time execution operating mode the problem of being widely varied for power system；The tertiary voltage control system power supply system based on soft sectoring of the present invention is reliable and stable, and service life is long, practical, and using effect is good, is easy to promote the use of.
Description
Technical field
The invention belongs to automatic voltage control system technical field, more particularly to a kind of tertiary voltage based on soft sectoring
Control system.
Background technology
Automatism voltage control is that modern power systems dispatch indispensable basic function.The main flow mould of automatism voltage control
Formula can be divided into 3 kinds according to control hierarchy：
The first is Two-stage control, and the optimization result of calculation of optimal load flow (OPF) is directly sent to the voltage order one of each power plant
Controller is controlled, and typical represent is German RWE Utilities Electric Co.s.The major defect of the control model is that AVC is completely dependent on
OPF, requires high to whole network data, and not enough, dynamic control effect is bad for AVC response speed in addition.Second
It is the tertiary voltage control based on hard partitioning, each control zone sets secondary voltage control, coordinates multiple one-levels in the region
The controlling behavior of controller, the secondary voltage control in each region is by 1 total tertiary voltage control, and its Typical Representative is France
EDF companies.
This is international state-of-the-art automatic voltage control system, is widely used, and its shortcoming is level-2 area
Division be unalterable, i.e. hard partitioning, it is difficult to adapt to it is fast-developing under power system.
The third is the tertiary voltage control based on soft sectoring that Tsing-Hua University proposes.The pattern has fully absorbed EDF controls
The advantage of molding formula, is decoupled with the space-time that software mode realizes control, overcomes the inherent hard partitioning of EDF three class controls
Defect, subregion is adjusted according to the method for operation of power network in time, it is ensured that the validity of subregion.This control model and fast development
China Power Grids mutually fit, therefore be widely used in China.In addition, also being applied in the PJM of North America.With reference to mountain
The actual conditions of eastern power network development, Shandong Power AVC uses the third control model, achieves good effect.The research is situated between
The general principle and correlation model for the control system that continues, and network analysis, root have been carried out to its practical application in Shandong Power
Coordinate and plant stand coordination approach and its application according to as a result, discussing factory of factory, and analyzed by power network practical operation situation
Shandong AVC systematic difference effects are verified, its rule is found.
AVC systems used in now domestic have been the technologies of relative maturity, and the object of research is traditional energy and quiet
State trend.Microgrid is a direction of future development, and it can improve the utilization rate of natural energy resources, perhaps exist in present fossil energy
Soon future that will be exhausted, the importance of tellurian regenerative resource is made full use of increasingly to highlight.But microgrid belongs to
The distributed energy and load, its method of operation have very big difference with the centralized energy of tradition；Microgrid has generating randomness again
Feature.Therefore eye on the Future herein, research considers the coordination automatic voltage control system after microgrid.
The tertiary voltage control pattern that French EDF is proposed is widely used in Europe, is achieved more satisfactory
Control effect.But the division of control area is to be solidificated in parametric form in hardware control under this pattern, it is difficult to adapted to
Continuing to develop for power system and being widely varied for real time execution operating mode, rack fast particularly with domestic power grid construction speed
Among structure is often in change, the application of this " hard partitioning " control model is more limited by.
The content of the invention
Present invention aims at a kind of tertiary voltage control system based on soft sectoring is proposed, to solve existing tertiary voltage
The division of control model control area is to be solidificated in parametric form in hardware control, it is difficult to adapt to the continuous of power system
Development and the problem of being widely varied of real time execution operating mode.
A kind of tertiary voltage control system based on soft sectoring, including three-stage control system, second control system, one-level control
System processed, the three-stage control system is connected with second control system and controls second control system, the second control system
It is connected with first class control system and controls first class control system.
Further, the three-stage control system includes higher level AVC systems, Global optimization module, subregion mould
Block, the higher level AVC systems are connected with Global optimization module, the Global optimization module and subregion mould
Block is connected.
Further, the division module is provided with several subregion little modules, and each subregion little module is parallel to global nothing
Work(voltage optimization module.
Further, the second control system by power plant voltage control module, transformer substation voltage control module and under
Level coordinating control module composition, control mould is coordinated by the power plant voltage control module, transformer substation voltage control module and subordinate
Block is parallel to division module.
Further, the power plant voltage control module is connected with the transformer substation voltage control module and forms coordination
Control.
Further, the power plant voltage control module includes power plant's busbar voltage control module.
Further, the transformer substation voltage control module includes substation equipment control module.
Further, subordinate's coordinating control module includes critical point reactive power/voltage control module.
Further, the critical point reactive power/voltage control module control subordinate AVC systems.
Further, the first class control system includes power substation system, integrated automation of transformation stations control module, collection
Control center/subsystem in substation system, the power substation system is connected with power plant's busbar voltage control module, the power transformation
Comprehensive automation control module of standing is parallel to substation equipment control module with centralized control center/subsystem in substation system.
The beneficial effect that the present invention is compared with the prior art includes：
(1) the tertiary voltage control system based on soft sectoring of the invention solves existing tertiary voltage control pattern control
The division in region is to be solidificated in parametric form in hardware control, it is difficult to adapt to continuing to develop and transporting in real time for power system
The problem of being widely varied of row operating mode；
(2) the tertiary voltage control system power supply system based on soft sectoring of the invention is reliable and stable, and service life is long, real
Strong with property, using effect is good, is easy to promote the use of.
Brief description of the drawings
Fig. 1 is the tertiary voltage control system structure diagram based on soft sectoring of the present invention.
Embodiment
As shown in Figure 1：A kind of tertiary voltage control system based on soft sectoring, including three-stage control system 1, Two-stage control
System 2, first class control system 3, the three-stage control system 1 are connected with second control system 2 and control second control system 2,
The second control system 2 is connected with first class control system 3 and controls first class control system 3.
The three-stage control system 1 includes higher level AVC systems 11, Global optimization module 12, division module 13,
The higher level AVC systems 11 are connected with Global optimization module 12, and the Global optimization module 12 is with dividing
Area's module 13 is connected.
The division module 13 is provided with several subregion little modules, and it is excellent that each subregion little module is parallel to Global
Change module.
The second control system 2 is assisted by power plant voltage control module 21, transformer substation voltage control module 22 and subordinate
Control module 23 is adjusted to constitute, control is coordinated by the power plant voltage control module 21, transformer substation voltage control module 22 and subordinate
Module 23 is parallel to division module 12.
The power plant voltage control module 21 is connected with the transformer substation voltage control module 22 and forms coordination control.
The power plant voltage control module 21 includes power plant's busbar voltage control module 211.
The transformer substation voltage control module 22 includes substation equipment control module 221.
Subordinate's coordinating control module 23 includes critical point reactive power/voltage control module 231.
The control of the critical point reactive power/voltage control module 231 subordinate AVC systems 2311.
The first class control system 3 is included in power substation system 31, integrated automation of transformation stations control module 32, collection control
The heart/subsystem in substation system 33, the power substation system 31 is connected with power plant's busbar voltage control module 32, described to become
Power station synthetical automation control module 32 is parallel to substation equipment control module with centralized control center/subsystem in substation system 33
221。
Control flow is described as follows in Fig. 1：
Three-stage control system
Three-stage control system is calculated based on voltage and reactive power optimization, according to the distribution that current the whole network is idle, is considered
Power plant, transformer station and ground adjust the idle of critical point to exert oneself and spare condition, are considering the security constraints such as voltage is qualified, trend is not out-of-limit
Under conditions of, calculating is optimized by optimization aim of loss minimization, the reactive Voltage Optimum desired value of network optimum is provided.
Because electric network reactive-load has distributivity and zonal feature, AVC systems will according to the characteristic of reactive power/voltage control
Power network is divided into some regions automatically, and the main critical busses of each regional choice are used as maincenter bus, the voltage control of maincenter bus
Target processed is using the given target of global idle work optimization.Equipment in same region has strong in reactive power/voltage control characteristic
Coupling, interregional equipment then possesses loose coupling, and the thinking of this zonal control meets the control of electric network reactive-load layering and zoning
Principle, while being " soft sectoring " by the on-line automatic completion of system during this subregion, adapt to the development and change of power network.
Second control system
Second control system is by power plant voltage control module, transformer substation voltage control module and subordinate's coordinating control module
Composition.
Power plant voltage control module
Voltage control module main control object in power plant is 500kV and 220kV power plant, and system is according to three class control
The controlling value of the region maincenter busbar voltage provided, the high pressure of the power plant related to this maincenter bus is obtained using sensitivity algorithm
Bus control targe value, with reference to the regulating power sent on power substation, the control voltage of COMPREHENSIVE CALCULATING high-pressure power plant bus, and under
Issue power substation.
Transformer substation voltage control module
The main control object of transformer substation voltage control module is the 500kV/220kV transformer stations of scheduling administration, system root
The controlling value of the region maincenter busbar voltage provided according to three class control, is obtained and change all in this region using sensitivity algorithm
The bus control targe value in power station.But this desired value cannot be directly used to control, this has with power plant voltage control module
Institute is different.On the one hand, because the equipment of transformer substation voltage control module is discrete device, the voltage control of transformer station is discontinuous
, with step evolution；On the other hand, need to consider in transformer station the busbar voltage of high, medium and low three side security constraint and
The requirement of target is adjusted, therefore in the secondary voltage control of transformer station, system needs the machine operation according to transformer station,
The busbar voltage control targe provided with reference to three class control carries out comprehensive analysis calculating, the control to currently available discrete device
As a result estimated, be just capable of determining whether control strategy that is controllable and generating specific equipment, be handed down to concentrator station or transformer station
Automated system is performed.
Control is coordinated by transformer station of power plant
In Two-stage control, when existing power plant, Ye You transformer stations in same subregion, it is desirable to realize to continuous tune
Section means (generator, phase modifier, SVC) and the cooperation of discrete adjustment means (electric capacity, reactance, OLTC) control, it is therefore desirable to real
Existing power plant's control and the coordination of Substation control are controlled.
Subordinate's coordinating control module
Adjust the AVC systems that the control object of coordinating control module is each subordinate's grid dispatching center, higher level's AVC systems in ground
The control targe value of the region maincenter busbar voltage provided according to three class control, with reference to the Reactive-power control ability sent on subordinate AVC,
Calculate and provide the reactive voltage regulation requirement for coordinating critical point, and to be sent to subordinate's AVC systems.Subordinate's AVC systems pass through control
Reactive apparatus in the power plant of administration, transformer station follow the control targe that AVC higher level AVC is issued.
First class control system
Power plant controls
Power plant's locality control can be completed by special power substation, can also by power plant DCS system or monitoring system
Complete.AVC main websites send the instruction of voltage control targe or the unit of high-pressure power plant to power plant according to the result of calculation of Two-stage control
Idle control instruction.Power substation is received after the idle control instruction of voltage control instructions or unit of high voltage bus, according to power plant
The running status of interior each subsystem, calculates the adjustment of field excitation instruction of the generator of each operation of generation so that idle or electricity
Pressure follows the instruction that net adjusts AVC to issue.
Substation control
Substation control can be completed by monitoring system of electric substation, and the AVC substations that can also be set in transformer station are completed,
2 kinds of modes of main website centralized control and subsystem in substation decentralized control can be used.
Main website centralized control：AVC main websites directly send capacitor, reactor switch to monitoring system of electric substation, divided
The remote control remote regulating instruction of joint, completes capacitor, the switching of reactor and adjusts separately.
Subsystem in substation decentralized control：Main transformer low-pressure side is transmitted in transformer station AVC substations in real time to AVC main websites to be increased
Plus and reduction reactive capability, AVC main websites send the instruction of the idle control of every main transformer, subsystem in substation to subsystem in substation
Receive after reactive command, voluntarily select capacitor and reactor to carry out switching control.Control is sub to transformer station by main website separately
Transmission remote regulating instruction of standing is realized.
It would be recognized by those skilled in the art that it is possible that numerous accommodations are made to above description, so embodiment and attached
Figure is intended merely to describe particular implementation.
Although having been described above and describing the example embodiment for being counted as the present invention, it will be apparent to those skilled in the art that
It can be variously modified and replaced, without departing from the spirit of the present invention.Furthermore it is possible to make many modifications with by spy
Condition of pledging love is fitted to the religious doctrine of the present invention, without departing from invention described herein central concept.So, the present invention is unrestricted
In specific embodiment disclosed here, but the present invention all embodiments that may also include belonging to the scope of the invention and its equivalent
Thing.
Claims (10)
1. a kind of tertiary voltage control system based on soft sectoring, it is characterised in that including three-stage control system, Two-stage control system
System, first class control system, the three-stage control system are connected with second control system and control second control system, described two grades
Control system is connected with first class control system and controls first class control system.
2. the tertiary voltage control system according to claim 1 based on soft sectoring, it is characterised in that the three class control
System includes higher level AVC systems, Global optimization module, division module, the higher level AVC systems and global idle electricity
Optimization module is pressed to be connected, the Global optimization module is connected with division module.
3. the tertiary voltage control system according to claim 2 based on soft sectoring, it is characterised in that the division module
Several subregion little modules are provided with, each subregion little module is parallel to Global optimization module.
4. the tertiary voltage control system according to claim 1 based on soft sectoring, it is characterised in that the Two-stage control
System is made up of power plant voltage control module, transformer substation voltage control module and subordinate's coordinating control module, the power plant
Voltage control module, transformer substation voltage control module and subordinate's coordinating control module are parallel to division module.
5. the tertiary voltage control system according to claim 4 based on soft sectoring, it is characterised in that the power plant electricity
Pressure control module is connected with the transformer substation voltage control module and forms coordination control.
6. the tertiary voltage control system according to claim 4 based on soft sectoring, it is characterised in that the power plant electricity
Control module is pressed to include power plant's busbar voltage control module.
7. the tertiary voltage control system according to claim 4 based on soft sectoring, it is characterised in that transformer station's electricity
Control module is pressed to include substation equipment control module.
8. the tertiary voltage control system according to claim 4 based on soft sectoring, it is characterised in that the subordinate is coordinated
Control module includes critical point reactive power/voltage control module.
9. the tertiary voltage control system according to claim 8 based on soft sectoring, it is characterised in that the critical point is idle
Voltage control module control subordinate AVC systems.
10. the tertiary voltage control system according to claim 1 based on soft sectoring, it is characterised in that the one-level control
System processed includes power substation system, integrated automation of transformation stations control module, centralized control center/subsystem in substation system, described
Power substation system is connected with power plant's busbar voltage control module, and the integrated automation of transformation stations control module is controlled with collection
Center/subsystem in substation system is parallel to substation equipment control module.
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| CN201710428911.8A CN107276101A (en) | 2017-06-08 | 2017-06-08 | A kind of tertiary voltage control system based on soft sectoring |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110854924A (en) * | 2019-11-04 | 2020-02-28 | 中国能源建设集团华东电力试验研究院有限公司 | One-time voltage-on synchronous phase-checking linkage switching inspection system and inspection method for electrical system |
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| CN101431240A (en) * | 2008-12-19 | 2009-05-13 | 四川省电力公司 | Space-saving integrated AVC system control method considering step power station |
| CN102738808A (en) * | 2012-06-20 | 2012-10-17 | 湖州电力局 | City and county integrated automatic voltage reactive power control (AVC) system |
| CN103368205A (en) * | 2013-07-09 | 2013-10-23 | 国家电网公司 | Method for determining voltage feasible region based on total wind power on-grid active power flow |
| CN103746388A (en) * | 2014-01-16 | 2014-04-23 | 南京软核科技有限公司 | Electric distribution network reactive-voltage three-level coordination control method |
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2017
- 2017-06-08 CN CN201710428911.8A patent/CN107276101A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101431240A (en) * | 2008-12-19 | 2009-05-13 | 四川省电力公司 | Space-saving integrated AVC system control method considering step power station |
| CN102738808A (en) * | 2012-06-20 | 2012-10-17 | 湖州电力局 | City and county integrated automatic voltage reactive power control (AVC) system |
| CN103368205A (en) * | 2013-07-09 | 2013-10-23 | 国家电网公司 | Method for determining voltage feasible region based on total wind power on-grid active power flow |
| CN103746388A (en) * | 2014-01-16 | 2014-04-23 | 南京软核科技有限公司 | Electric distribution network reactive-voltage three-level coordination control method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110854924A (en) * | 2019-11-04 | 2020-02-28 | 中国能源建设集团华东电力试验研究院有限公司 | One-time voltage-on synchronous phase-checking linkage switching inspection system and inspection method for electrical system |
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Application publication date: 20171020 |