CN109617086A - A kind of power grid dynamic passive compensation equipment coordination control system and method - Google Patents
A kind of power grid dynamic passive compensation equipment coordination control system and method Download PDFInfo
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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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- H02J13/0017—
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- H02J13/0062—
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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
- H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
- H02J2203/20—Simulating, e g planning, reliability check, modelling or computer assisted design [CAD]
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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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- 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
- Y02E40/70—Smart grids as climate change mitigation technology in the energy generation sector
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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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/16—Electric power substations
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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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/22—Flexible AC transmission systems [FACTS] or power factor or reactive power compensating or correcting units
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Abstract
The invention discloses a kind of power grid dynamic passive compensation equipment coordination control system and method, the control system includes: coordinated control main website, subregion coordinated control substation, dynamic reactive compensation device, dispatch data net communication system, quick private network communication system.Coordinated control main website obtains total controllable idle resource information and the whole network unit, network frame topology information, generates to calculate data and carry out dynamic reactive to the whole network different subregions and lays in dynamic evaluation, assigns total idle control command to subregion coordinated control substation；Subregion coordinated control substation is communicated with dynamic reactive compensation device, optimizes this subregion idle resource according to the idle control command that coordinated control main website issues, and send control instruction to dynamic reactive control device；Dynamic reactive compensation device receives subregion coordinated control substation control command, carries out local reactive power/voltage control.It is controlled by dynamic passive compensation equipment coordination, can effectively promote the Existence of Global Stable that dynamic passive compensation ensures network voltage.
Description
Technical field:
The invention belongs to field of power systems, are related to stability of power system field, and in particular to bulk power grid dynamic reactive
Compensate equipment coordination control system and method.
Background technique:
Chinese energy and power load distributing are uneven, and the energy concentrates on west area, and load focuses mostly in East Coastal
Area.In recent years, the new energy scale based on wind energy, solar energy constantly expands, and original northwest energy sends out base due to new
The extensive access of energy power supply shows newly energy operation characteristic: power intervals are strong, and voltage ripple of power network is big.In addition with water power
For the power grid of main force's power supply, damping characteristic is poor, and the water power channel in net has dynamic stability, constrains water power and send
Output capacity.
Since eighties of last century the eighties FACTS concept is born, FACTS technology obtains widely studying and rapidly pushing away
Wide application is one of the emerging technology areas that electric power industry development is most fast and influence is most wide.Nearly 20 kinds of FACTS have been invented at present
Controller, it is most of to be commercialized and obtained good effect, become the important technology hand for solving modern power network lot of challenges
One of section.It is used to alleviate stabilization of power grids problem for dynamic passive compensation equipment to have been widely applied in multiple power grids, to the west of
For southern power grid, for reply voltage, damping problem, the dynamic passive compensations equipment such as SVC is widely applied.However current electric grid
Dynamic passive compensation equipment only for installation point relevant issues, do not accomplish global effective utilize；When power grid mode occurs
When variation, dynamic passive compensation equipment can not accomplish to adjust in time, cause dynamic passive compensation ability to be unable to get and give full play to；
In addition current reactive-load compensation equipment only has local Voltage Emergency Control function, can not accomplish regional urgent coordinated control.For
Dynamic passive compensation capacity of equipment is given full play to, is allowed to have global engineering optimum control and accident post-emergency control, having must
Establish a set of dynamic passive compensation equipment coordination control system.
Summary of the invention
The object of the present invention is to provide a kind of power grid dynamic passive compensation equipment coordination control system and methods, are used for
Coordinated control power grid dynamic passive compensation resource coordinates dynamic passive compensation equipment by network-wide optimization and subregion, can be abundant
Dynamic passive compensation capacity of equipment is played, has global engineering optimum control and accident post-emergency control function, can be promoted and be
System performance driving economy, it is horizontal to increase electricity net safety stable.
In order to achieve the above objectives, the technical scheme is that a kind of power grid dynamic passive compensation equipment coordination controls
System, the control system include: coordinated control main website, at least one subregion coordinated control substation, dynamic reactive compensation device,
Dispatch data net communication system, quick private network communication system；Wherein:
Coordinated control main website obtains total controllable idle resource information that subregion coordinated control substation uploads, is assisted according to subregion
The different subregions sent on control sub-station are adjusted to exchange idle information；Obtaining the whole network from AVC system includes equipment containing static reactive power compensation
Other reactive apparatus information inside obtain the whole network unit and rack information from dispatch automated system；It is dynamic based on information above
State, which generates, calculates data, carries out dynamic evaluation calculating to different subregions dynamic reactive deposit based on time-domain-simulation, coordinates to subregion
Control sub-station assigns total idle control command；
Subregion coordinated control substation is communicated by high-speed communication system with dynamic reactive compensation device, obtains idle electricity in real time
Information is pressed, the idle control command issued according to coordinated control main website optimizes this subregion idle resource, and be sent to dynamic reactive
Compensate control device；
Dynamic reactive compensation device acquires local electrical quantities information, receives subregion coordinated control substation control command, carries out
Local reactive power/voltage control；
Coordinated control main website and subregion coordinated control substation, subregion coordinated control substation and dynamic reactive compensation device are distinguished
It is communicated by dispatch data net communication system and quick personal communication system.
Further, the coordinated control main website, is arranged in dispatching terminal, is communicated with existing AVC system, from AVC
System receives other reactive apparatus of the whole network investment information and standby message.
Further, the coordinated control main website, is communicated with existing dispatch automated system, for obtaining the whole network
Booting and method of operation information generate the Load flow calculation data and multilayer output feedback network data for being used for stability Calculation in real time.
Further, the coordinated control main website, it is idle according to Real-time Power Flow data and multilayer output feedback network data, the whole network
Real time information and reactive reserve information, are based on contingency set and time-domain-simulation, opposite divided intervals reactive power exchange and each point
Power output that area is idle carries out dynamic optimization assessment.
Further, the coordinated control main website, opposite divided intervals reactive power exchange and the idle power output of each subregion are moved
State optimization evaluation method is assessed based on time-domain-simulation calculated result, and the method for assessment is first to different key node electricity
Pressure carries out stability assessment, then carries out multiple-objection optimization assessment to all different node voltages.
Further, the coordinated control main website, key node voltage carry out stability assessment method particularly includes: examination is closed
The time-domain-simulation voltage V of key nodetTo assigned voltage traffic coverage [Vnomal_min,Vnomal_max] integral, i.e. Test=Test1+
Test2+Test3, calculation formula are as follows:
Wherein, Vnomal_minMinimum operating voltages,
Vnomal_maxMaximum working voltage.
Further, the coordinated control main website carries out multiple-objection optimization assessment, multiple target to all different node voltages
The method of assessment is not limited to legal set of weights, Objective Programming, Min-max method, efficiency coefficient method, multiplication and division:
Further, the coordinated control main website sends subregion to subregion coordinated control substation and exchanges reactive power
Qeij_refAnd idle power output Q inside subregionei_ref；
Further, subregion coordinated control substation receives exchange reactive power Q from coordinated control main websiteeij_refWith
And idle power output Q inside subregionei_refAfterwards, in conjunction with dynamic passive compensation equipment service requirement such as damping control (i=1), voltage
Stablize (i=2) etc., reactive power Q will be exchangedeij_refWith power output Q idle inside subregionei_refAs constraint condition, in subregion
Portion's dynamic reactive power control size optimizes calculating；
Further, subregion coordinated control substation will carry out subregion internal dynamic Reactive Power Control size excellent
Change the method calculated, standardize the coordination nonlinear optimal problem for considering different constraints for one, can be described with following formula:
maxf(x,u)
Wherein,
X: system mode vector, including but not limited to using node voltages different inside subregion；
U: dynamic passive compensation equipment dominant vector, including but not limited to using dynamic passive compensation dynamic control power；
F (x, u): optimization object function, including but not limited to, inside one's respective area and with other region reactive power exchanges and coordinate
The minimum target of target control target error that control main website issues, that is, contain constrained multi-objective optimization question, optimization method
Including but not limited to set of weights is legal, Objective Programming, Min-max method, efficiency coefficient method, multiplication and division, using weighted array
The objective function of method are as follows:
F (x, u)=K1∑(Qeij-Qeij_ref)+K2∑(Qei-Qei_ref)
G (x, u)=0 indicates trend constraint；
si(x,u,d)≥σs,iIndicate stable constraint, d is to realize the fault set relevant with stable problem screened
It closes, siFor stable problem of interest, including but not limited to damping control (i=1), voltage stabilization (i=2)；σs,iIt indicates and steady
The relevant nargin lower limit of qualitative question i；
Indicate constraint condition；Including but not limited to generator power constraint, scope range of the fluctuation of voltage, dynamic
The units limits of reactive-load compensation equipment；
By above-mentioned optimal control measure, the idle control instruction Q of Different Dynamic reactive-load compensation equipment is obtainedik, and should
Instruction is sent to corresponding dynamic reactive compensation device；
Further, subregion coordinated control substation, when breaking down in the subregion causes element to exit, subregion association
Adjust control sub-station according to remaining element state and network topology, rapid Optimum is instructed without the distribution of work, and by optimization again
It is sent to dynamic passive compensation equipment by high-speed traffic private network, subregion coordinated control substation is made to have emergent control function.
Further, the high-speed traffic private network refers to and sets up exclusively for dynamic passive compensation equipment coordination control system
Fast messaging network, used communication protocol includes but is not limited to the GOOSE transport protocol of IEC61850, HDLC communication protocols
View.
Further, the dynamic passive compensation equipment, including but not limited to generator, Static Var Compensator, static
Synchronous compensator, phase modifier；
Further, the dynamic passive compensation equipment, has control function on the spot, when voltage is higher or lower than regulation
When traffic coverage, start local voltage control function, target is that voltage is maintained specified interval；
The present invention accordingly proposes the control method of above-mentioned power grid dynamic passive compensation equipment coordination control system, specific to wrap
Include following steps:
Step I: coordinated control main website obtain subregion coordinated control substation upload total controllable idle resource information, according to point
The different subregions sent on area coordinated control substation exchange idle information, obtain other reactive apparatus information of the whole network from AVC system, from
Dispatch automated system obtains the whole network unit and rack information, and dynamic generation calculates data, based on time-domain-simulation to different subregions
Dynamic reactive deposit carries out dynamic evaluation calculating, issues subregion coordinated control substation to subregion coordinated control substation and sends subregion friendship
Change reactive power Qeij_refAnd idle power output Q inside subregionei_ref；
Step II, subregion coordinated control substation receive exchange reactive power Q from coordinated control main websiteeij_refAnd in subregion
Portion is idle power output Qei_refAfterwards, in conjunction with dynamic passive compensation equipment service requirement (such as damping control (i=1), voltage stabilization (i=
2) etc.), reactive power Q will be exchangedeij_refWith power output Q idle inside subregionei_refIt is different about using consideration as constraint condition
The coordination Non-linear Optimal Model of beam optimizes calculating to subregion internal dynamic Reactive Power Control size, obtains different dynamic
The idle control instruction Q of state reactive-load compensation equipmentik, and corresponding reactive power compensator is sent by the instruction；
Step III, dynamic reactive device receive the idle control instruction Q of subregion coordinated control substationikAfterwards, by the power
Target value as dynamic reactive compensation device is responded；Dynamic passive compensation equipment has control function on the spot simultaneously, when
When voltage is higher or lower than regulation traffic coverage, start local voltage control function, target is that voltage is maintained to regulation area
Between；
Step IV, when breaking down in certain subregion causes element to exit, subregion coordinated control substation is according to remaining element
State and network topology, rapid Optimum is calculated without the distribution of work again, that is, returns to step II.
The beneficial effects of the present invention are: the present invention generates according to power grid real-time running data and is used for electric network swim and stabilization
The data of calculating, and based on time-domain-simulation analysis it is idle to the whole network different subregions optimize calculating, from the whole network angle to power grid
Safety optimizes, and optimum results are accurate, can give full play to dynamic passive compensation capacity of equipment；In addition, subregion coordinated control system
System have the function of emergent control, rapid Optimum control can be carried out after accident, can lifting system performance driving economy, increase power grid
Safety and stability is horizontal.
Detailed description of the invention
Fig. 1 is a kind of power grid dynamic passive compensation equipment coordination control system architecture figure of the invention.
Specific embodiment
Below with reference to drawings and the specific embodiments, technical solution of the present invention is described in detail.
Fig. 1 show a kind of power grid dynamic passive compensation equipment coordination control system architecture figure of the invention；The control
System includes: coordinated control main website, at least one subregion coordinated control substation, dynamic reactive compensation device, and dispatch data net is logical
Letter system, quick private network communication system；Wherein:
Coordinated control main website obtains total controllable idle resource information that subregion coordinated control substation uploads, is assisted according to subregion
The different subregions sent on control sub-station are adjusted to exchange idle information, obtaining the whole network from AVC system includes equipment containing static reactive power compensation
Other reactive apparatus information inside obtain the whole network unit and rack information from dispatch automated system；It is dynamic based on information above
State, which generates, calculates data, carries out dynamic evaluation calculating to different subregions dynamic reactive deposit based on time-domain-simulation, coordinates to subregion
Control sub-station assigns total idle control command；
Subregion coordinated control substation is communicated by high-speed communication system with dynamic reactive compensation device, obtains idle electricity in real time
Information is pressed, the idle control command issued according to coordinated control main website optimizes this subregion idle resource, and be sent to dynamic reactive
Compensation device；
Dynamic reactive compensation device acquires local electrical quantities information, receives subregion coordinated control substation control command, carries out
Local reactive power/voltage control；
Coordinated control main website and subregion coordinated control substation, subregion coordinated control substation and dynamic reactive compensation device are distinguished
It is communicated by dispatch data net communication system and quick personal communication system.
Wherein, the coordinated control main website, is arranged in dispatching terminal, is communicated with existing AVC system, from AVC system
Receive other reactive apparatus of the whole network investment information and standby message.
Wherein, the coordinated control main website, is communicated with existing dispatch automated system, for obtaining the whole network booting
And method of operation information, the Load flow calculation data and multilayer output feedback network data for being used for stability Calculation are generated in real time.
Wherein, the coordinated control main website, it is idle in real time according to Real-time Power Flow data and multilayer output feedback network data, the whole network
Information and reactive reserve information, are based on contingency set and time-domain-simulation, opposite divided intervals reactive power exchange and each subregion without
Function power output carries out dynamic optimization assessment.
Wherein, it is excellent that the coordinated control main website, opposite divided intervals reactive power exchange and the idle power output of each subregion carry out dynamic
Change appraisal procedure, assessed based on time-domain-simulation calculated result, the method for assessment first to different key node voltages into
Then row stability assessment carries out multiple-objection optimization assessment to all different node voltages.
Wherein, the coordinated control main website, key node voltage carry out stability assessment method particularly includes: the crucial section of examination
The time-domain-simulation voltage V of pointtTo assigned voltage traffic coverage [Vnomal_min,Vnomal_max] integral, i.e. Test=Test1+Test2+
Test3, calculation formula are as follows:
Wherein, Vnomal_minMinimum operating voltages,
Vnomal_maxMaximum working voltage.
Wherein, the coordinated control main website carries out multiple-objection optimization assessment, multiple target assessment to all different node voltages
Method be not limited to legal set of weights, Objective Programming, Min-max method, efficiency coefficient method, multiplication and division.
Wherein, the coordinated control main website sends subregion to subregion coordinated control substation and exchanges reactive power Qeij_refWith
And idle power output Q inside subregionei_ref。
Wherein, subregion coordinated control substation receives exchange reactive power Q from coordinated control main websiteeij_refAnd point
Idle power output Q inside areaei_refAfterwards, steady in conjunction with dynamic passive compensation equipment service requirement, such as damping control (i=1), voltage
Fixed (i=2) etc., will exchange reactive power Qeij_refWith power output Q idle inside subregionei_refAs constraint condition, to subregion inside
Dynamic reactive power control size optimizes calculating.
Wherein, subregion coordinated control substation will optimize meter to subregion internal dynamic Reactive Power Control size
The method of calculation standardizes the coordination nonlinear optimal problem for considering different constraints for one, can be described with following formula:
maxf(x,u)
Wherein,
X: system mode vector, including but not limited to using node voltages different inside subregion；
U: dynamic passive compensation equipment dominant vector, including but not limited to using dynamic passive compensation dynamic control power；
F (x, u): optimization object function, including but not limited to, inside one's respective area and with other region reactive power exchanges and coordinate
The minimum target of target control target error that control main website issues, that is, contain constrained multi-objective optimization question, optimization method
Including but not limited to set of weights is legal, Objective Programming, Min-max method, efficiency coefficient method, multiplication and division, using weighted array
The objective function of method are as follows:
F (x, u)=K1∑(Qeij-Qeij_ref)+K2∑(Qei-Qei_ref)
G (x, u)=0 indicates trend constraint；
si(x,u,d)≥σs,iIndicate stable constraint, d is to realize the fault set relevant with stable problem screened
It closes, siFor stable problem of interest, including but not limited to damping control (i=1), voltage stabilization (i=2)；σs,iIt indicates and steady
The relevant nargin lower limit of qualitative question i；
Indicate constraint condition；Including but not limited to generator power constraint, scope range of the fluctuation of voltage, dynamic
The units limits of reactive-load compensation equipment；
By above-mentioned optimal control measure, the idle control instruction Q of Different Dynamic reactive-load compensation equipment is obtainedik, and should
Instruction is sent to corresponding reactive power compensator.
Wherein, subregion coordinated control substation, when breaking down in the subregion causes element to exit, subregion coordinates control
System station is according to remaining element state and network topology, and rapid Optimum passes through without the distribution of work, and by optimization instruction again
High-speed traffic private network is sent to dynamic passive compensation equipment, and subregion coordinated control substation is made to have emergent control function.
Wherein, the high-speed traffic private network refers to exclusively for the fast of dynamic passive compensation equipment coordination control system establishment
Fast communication network, used communication protocol include but are not limited to the GOOSE transport protocol of IEC61850, HDLC communication protocol.
Wherein, the dynamic passive compensation equipment, including but not limited to generator, Static Var Compensator, Static Synchronous
Compensator, phase modifier；
Wherein, the dynamic passive compensation equipment, has control function on the spot, when voltage is higher or lower than regulation operation
When section, start local voltage control function, target is that voltage is maintained specified interval；
The present invention accordingly proposes the control method of the voltage coordinated control system of above-mentioned extensive new energy access power grid,
Specifically includes the following steps:
Step I: coordinated control main website obtain subregion coordinated control substation upload total controllable idle resource information, according to point
The different subregions sent on area coordinated control substation exchange idle information, obtain other reactive apparatus information of the whole network from AVC system, from
Dispatch automated system obtains the whole network unit and rack information, and dynamic generation calculates data, based on time-domain-simulation to different subregions
Dynamic reactive deposit carries out dynamic evaluation calculating, issues subregion coordinated control substation to subregion coordinated control substation and sends subregion friendship
Change reactive power Qeij_refAnd idle power output Q inside subregionei_ref；
Step II, subregion coordinated control substation receive exchange reactive power Q from coordinated control main websiteeij_refAnd in subregion
Portion is idle power output Qei_refAfterwards, in conjunction with dynamic passive compensation equipment service requirement, such as damping control (i=1), voltage stabilization (i
=2) etc., reactive power Q will be exchangedeij_refWith power output Q idle inside subregionei_refIt is different about using consideration as constraint condition
The coordination Non-linear Optimal Model of beam optimizes calculating to subregion internal dynamic Reactive Power Control size, obtains different dynamic
The idle control instruction Q of state reactive-load compensation equipmentik, and corresponding reactive power compensator is sent by the instruction；
Step III, dynamic reactive device receive the idle control instruction Q of subregion coordinated control substationikAfterwards, by the power
Target value as dynamic reactive compensation device is responded；Dynamic passive compensation equipment has control function on the spot simultaneously, when
When voltage is higher or lower than regulation traffic coverage, start local voltage control function, target is that voltage is maintained to regulation area
Between；
Step IV, when breaking down in certain subregion causes element to exit, subregion coordinated control substation is according to remaining element
State and network topology, rapid Optimum is calculated without the distribution of work again, that is, returns to step II.
Technical solution provided by the invention extends the function of existing AVC system, and this programme is based on the whole network time-domain analysis knot
Fruit, optimum results are accurate, can give full play to dynamic passive compensation capacity of equipment；Subregion coordinated control system has emergent control function
Can, rapid Optimum control can be carried out after accident, can lifting system performance driving economy, increase electricity net safety stable level.
Finally it should be noted that: only illustrate technical solution of the present invention rather than its limitations in conjunction with above-described embodiment.Institute
The those of ordinary skill in category field is to be understood that: those skilled in the art can repair a specific embodiment of the invention
Change or equivalent replacement, but these modifications or change are being applied within pending patent requirements protection scope.
Claims (15)
1. a kind of power grid dynamic passive compensation equipment coordination control system, which is characterized in that the control system includes: to coordinate control
Main website processed, at least one subregion coordinated control substation, dynamic reactive compensation device, dispatch data net communication system, quick private network
Communication system；Wherein:
The coordinated control main website obtains total controllable idle resource information that subregion coordinated control substation uploads, is assisted according to subregion
The different subregions sent on control sub-station are adjusted to exchange idle information；Other reactive apparatus information of the whole network are obtained from AVC system；From scheduling
Automated system obtains the whole network unit and rack information；Data are calculated based on information above dynamic generation, are based on time-domain-simulation pair
Different subregions dynamic reactive deposit carries out dynamic evaluation calculating, assigns total idle control command to subregion coordinated control substation；
Subregion coordinated control substation is communicated with dynamic reactive compensation device by high-speed communication system, is obtained in real time idle
Information of voltage, the idle control command issued according to coordinated control main website, optimizes this subregion idle resource, and send control command
To dynamic reactive compensation device；
The dynamic reactive compensation device acquires local electrical quantities information, receives subregion coordinated control substation control command, carries out
Local reactive power/voltage control；
Coordinated control main website passes through respectively with subregion coordinated control substation, subregion coordinated control substation and dynamic reactive compensation device
Dispatch data net communication system and the communication of quick personal communication system.
2. a kind of power grid dynamic passive compensation equipment coordination control system as described in claim 1, which is characterized in that the association
Regulate and control main website processed, is arranged in dispatching terminal, is communicated with existing AVC system, receive other reactive apparatus of the whole network from AVC system
Put into information and standby message.
3. a kind of power grid dynamic passive compensation equipment coordination control system as described in claim 1, which is characterized in that the association
Regulate and control main website processed, communicated with existing dispatch automated system, for obtaining the whole network booting and method of operation information, in real time
Generate the flow data and transient stability data for being used for stability Calculation.
4. a kind of power grid dynamic passive compensation equipment coordination control system as claimed in claim 3, which is characterized in that the association
Regulate and control main website processed, is believed according to Real-time Power Flow data and the idle real time information of multilayer output feedback network data, the whole network and reactive reserve
Breath, is based on contingency set and time-domain-simulation, and opposite divided intervals reactive power exchange and the idle power output of each subregion carry out dynamic optimization
Assessment.
5. a kind of power grid dynamic passive compensation equipment coordination control system as claimed in claim 4, which is characterized in that the association
Regulate and control main website processed, it is when being based on that opposite divided intervals reactive power exchange and the idle power output of each subregion, which carry out dynamic optimization appraisal procedure,
Domain simulation result is assessed, and the method for assessment carries out stability assessment to different key node voltages first, then right
All difference node voltages carry out multiple-objection optimization assessment.
6. a kind of power grid dynamic passive compensation equipment coordination control system as claimed in claim 5, which is characterized in that the association
Regulate and control main website processed, key node voltage carries out stability assessment method particularly includes: examines or check the time-domain-simulation voltage V of key nodet
To assigned voltage traffic coverage [Vnomal_min,Vnomal_max] integral, i.e. Test=Test1+Test2+Test3,
Calculation formula are as follows:
Wherein, Vnomal_minMinimum operating voltages,
Vnomal_maxMaximum working voltage.
7. a kind of power grid dynamic passive compensation equipment coordination control system as claimed in claim 5, which is characterized in that the association
Regulate and control main website processed, multiple-objection optimization assessment is carried out to all different node voltages, the method for multiple target assessment includes: weighted array
Method, Objective Programming, Min-max method, efficiency coefficient method, multiplication and division.
8. a kind of power grid dynamic passive compensation equipment coordination control system as described in claim 1, which is characterized in that the association
Regulate and control main website processed, sends subregion to subregion coordinated control substation and exchange reactive power Qeij_refAnd idle power output inside subregion
Qei_ref。
9. a kind of power grid dynamic passive compensation equipment coordination control system as claimed in claim 8, which is characterized in that described point
Area coordinated control substation receives exchange reactive power Q from coordinated control main websiteeij_refAnd idle power output Q inside subregionei_ref
Afterwards, in conjunction with dynamic passive compensation equipment service requirement, reactive power Q will be exchangedeij_refWith power output Q idle inside subregionei_refWhen
Make constraint condition, calculating is optimized to subregion internal dynamic Reactive Power Control size.
10. a kind of power grid dynamic passive compensation equipment coordination control system as claimed in claim 9, which is characterized in that described
Subregion coordinated control substation, the method that will optimize calculating to subregion internal dynamic Reactive Power Control size, standardizing is one
A coordination nonlinear optimal problem for considering different constraints, is described with following formula:
maxf(x,u)
Wherein,
X: system mode vector；
U: dynamic passive compensation equipment dominant vector；
F (x, u): it is issued inside optimization object function, including one's respective area and with other region reactive power exchanges with coordinated control main website
The minimum target of target control target error, that is, contain constrained multi-objective optimization question, optimization method includes weighted array
Method, Objective Programming, Min-max method, efficiency coefficient method, multiplication and division, using the legal objective function of set of weights are as follows:
F (x, u)=K1∑(Qeij-Qeij_ref)+K2∑(Qei-Qei_ref)
G (x, u)=0 indicates trend constraint；
si(x,u,d)≥σs,iIndicate stable constraint, d is to realize the failure collection relevant with stable problem screened, si
For stable problem of interest；σs,iIndicate nargin lower limit relevant with stability problem i；
Indicate constraint condition；Including generator power constraint, scope range of the fluctuation of voltage, dynamic passive compensation equipment
Units limits；
By above-mentioned optimal control measure, the idle control instruction Q of Different Dynamic reactive-load compensation equipment is obtainedik, and by the instruction
It is sent to corresponding dynamic reactive compensation device.
11. a kind of power grid dynamic passive compensation equipment coordination control system as described in claim 1, which is characterized in that described
Subregion coordinated control substation, when breaking down in the subregion causes element to exit, subregion coordinated control substation is according to remaining member
Part state and network topology, rapid Optimum is sent without the distribution of work, and by optimization instruction by high-speed traffic private network again
To dynamic passive compensation equipment, subregion coordinated control substation is made to have emergent control function.
12. a kind of power grid dynamic passive compensation equipment coordination control system as described in claim 1, which is characterized in that described
High-speed traffic private network refers to the fast messaging network set up exclusively for dynamic passive compensation equipment coordination control system, is used
Communication protocol include the GOOSE transport protocol of IEC61850, HDLC communication protocol.
13. a kind of power grid dynamic passive compensation equipment coordination control system as described in claim 1, which is characterized in that described
Dynamic passive compensation equipment includes generator, Static Var Compensator, static synchronous compensator, phase modifier.
14. a kind of power grid dynamic passive compensation equipment coordination control system as described in claim 1, which is characterized in that described
Dynamic passive compensation equipment has control function on the spot, when voltage is higher or lower than regulation traffic coverage, starts local electricity
Control function is pressed, target is that voltage is maintained specified interval.
15. a kind of control method of power grid dynamic passive compensation equipment coordination control system as described in claim 1 to 14,
It is characterized in that, comprising the following steps:
Step I: coordinated control main website obtains total controllable idle resource information that subregion coordinated control substation uploads, and is assisted according to subregion
It adjusts the different subregions sent on control sub-station to exchange idle information, other reactive apparatus information of the whole network is obtained from AVC system, from scheduling
Automated system obtains the whole network unit and rack information, and dynamic generation calculates data, based on time-domain-simulation to different subregions dynamic
Reactive reserve carries out dynamic evaluation calculating, issues subregion coordinated control substation to subregion coordinated control substation and sends subregion exchange nothing
Function power Qeij_refAnd idle power output Q inside subregionei_ref；
Step II, subregion coordinated control substation receive exchange reactive power Q from coordinated control main websiteeij_refAnd nothing inside subregion
Function power output Qei_refAfterwards, in conjunction with dynamic passive compensation equipment service requirement, reactive power Q will be exchangedeij_refIt is idle with subregion inside
Contribute Qei_refIt is idle to subregion internal dynamic using the coordination Non-linear Optimal Model for considering different constraints as constraint condition
Power control size optimizes calculating, obtains the idle control instruction Q of Different Dynamic reactive-load compensation equipmentik, and by the instruction
It is sent to corresponding reactive power compensator；
Step III, dynamic reactive device receive the idle control instruction Q of subregion coordinated control substationikAfterwards, using the power as
The target value of dynamic reactive compensation device is responded；Dynamic passive compensation equipment has control function on the spot simultaneously, works as voltage
When higher or lower than regulation traffic coverage, start local voltage control function, target is that voltage is maintained specified interval；
Step IV, when breaking down in certain subregion causes element to exit, subregion coordinated control substation is according to remaining element state
And network topology, rapid Optimum is calculated without the distribution of work again, that is, returns to step II.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111864761A (en) * | 2020-07-30 | 2020-10-30 | 广东电网有限责任公司 | Power grid reactive resource optimization scheduling system and method |
| CN113225316A (en) * | 2021-04-09 | 2021-08-06 | 国网电力科学研究院有限公司 | Network security defense method and system for security and stability control system |
| CN113315140A (en) * | 2021-06-06 | 2021-08-27 | 广东电网有限责任公司电力调度控制中心 | Offshore wind power reactive compensation coordination control method |
-
2019
- 2019-01-24 CN CN201910065829.2A patent/CN109617086A/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111864761A (en) * | 2020-07-30 | 2020-10-30 | 广东电网有限责任公司 | Power grid reactive resource optimization scheduling system and method |
| CN113225316A (en) * | 2021-04-09 | 2021-08-06 | 国网电力科学研究院有限公司 | Network security defense method and system for security and stability control system |
| CN113225316B (en) * | 2021-04-09 | 2023-09-12 | 国网电力科学研究院有限公司 | Network security defense method and system for security and stability control system |
| CN113315140A (en) * | 2021-06-06 | 2021-08-27 | 广东电网有限责任公司电力调度控制中心 | Offshore wind power reactive compensation coordination control method |
| CN113315140B (en) * | 2021-06-06 | 2023-07-18 | 广东电网有限责任公司电力调度控制中心 | Offshore wind power reactive compensation coordination control method |
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Application publication date: 20190412 |