CN105893714A - Closed-loop detection and assessment method for automatic voltage control system based on large-power-grid simulation system - Google Patents

Closed-loop detection and assessment method for automatic voltage control system based on large-power-grid simulation system Download PDF

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CN105893714A
CN105893714A CN201610340787.5A CN201610340787A CN105893714A CN 105893714 A CN105893714 A CN 105893714A CN 201610340787 A CN201610340787 A CN 201610340787A CN 105893714 A CN105893714 A CN 105893714A
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voltage control
automatic voltage
control
control system
simulation system
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CN105893714B (en
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唐永红
李旻
尹琪
徐琳
姜振超
藤予非
常政威
蒲维
丁瑞
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Sichuan University
Electric Power Research Institute of State Grid Sichuan Electric Power Co Ltd
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Sichuan University
Electric Power Research Institute of State Grid Sichuan Electric Power Co Ltd
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    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F30/00Computer-aided design [CAD]
    • G06F30/20Design optimisation, verification or simulation
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F2111/00Details relating to CAD techniques
    • G06F2111/04Constraint-based CAD
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation

Abstract

The invention discloses a closed-loop detection and assessment method for an automatic voltage control system based on a large-power-grid simulation system. The closed-loop detection and assessment method includes that the large-power-grid simulation system sends transmission cross-section information of a practical region power grid selected from an intelligent detection library stored with multiple groups of cases to the automatic voltage control system; if voltage or power in the transmission cross-section information is over limit, the automatic voltage control system generates a corresponding control policy and sends the control policy to the large-power-grid simulation system to control and manipulate electrical equipment corresponding to the simulation system, so that electrical parameters of the electrical equipment restore to a normal range; as for the same operation mode, the transmission cross-section information is sent to an assessment system, the assessment system generates a corresponding control policy, calculates corresponding assessment indexes and is used for assessing optimization effects, control efficiency and operability of the control policy of the automatic voltage control system.

Description

Detect based on the automatic voltage control system closed loop under Bulk power system simulation system and assessment Method
Technical field
The present invention relates to Simulating technique in Electric Power System, be specifically related to based on the automatism voltage control under Bulk power system simulation system The detection of system closed loop and appraisal procedure.
Background technology
Recently as expansion and the change of energy resource structure of electrical network scale, the structure of electric power networks is the most complicated, from Dynamic voltage control system (automatic voltage control, AVC) is the idle master-hand controlling development of current voltage Section, it is possible to realize the closed-loop control of system, is the senior embodiment of dispatching patcher automation, and at home and abroad achieves widely Application.In actual motion operates, there is quite a few powerless control system to obtain satisfied control effect, generally require Operations staff's repeated multiple times adjustment parameter, takes considerable time that energy also is difficult to obtain satisfied optimum results sometimes.
And the area power grid of some automatic voltage control system that puts into operation is in operation and also occurs in that many problems, as when negative Time lotus changes tempestuously, if the control strategy that automatic voltage control system is given is unreasonable, may result in and dash forward at load The when of so increasing or reduce, capacitor or reactor action frequently maintain voltage stability, this for capacitor/ The life-span of reactor is disadvantageous;When electrical network occurs voltage out-of-limit, idle shortage or idle foldback in running, automatically Voltage control system can provide some control strategies to make system restoring running normal, and irrational idle strategy can be to system Element even network impacts.
Up to the present, also there is no a kind of well bulk power grid idle control Equipment Inspection platform and detection means, therefore Carry out AVC closed loop based on Bulk power system simulation system detection experimental study, idle to control area's electrical network busbar voltage and region Power-balance is estimated having realistic meaning, and the most only operation and the electric network reactive-load facility planning of automatic voltage control system carries For scientific basis, and provide reliable technical support for accelerating the structure of Intelligent automatic voltage control system.
Summary of the invention
For above-mentioned deficiency of the prior art, it is voltage-controlled based on the automatic electric under Bulk power system simulation system that the present invention provides The effect of optimization of the control strategy that automatic voltage control system can be given by system closed loop processed detection and appraisal procedure, control effect Rate and operability are estimated.
In order to reach foregoing invention purpose, the technical solution used in the present invention is:
There is provided a kind of to detect and appraisal procedure based on the automatic voltage control system closed loop under Bulk power system simulation system, including Following steps:
Bulk power system simulation system has the tide choosing arbitrary actual area power grid the Intelligent Measurement storehouse of many group cases from storage Flow section information, and described trend section information is sent to dispatch automated system by intermediate communication data interface module Automatic voltage control system;
Automatic voltage control system judges whether are the voltage in the actual operation parameters of trend section information or power factor Beyond setting limit value;
If beyond setting limit value, then automatic voltage control system generates corresponding control strategy, and by intermediate communication number According to interface module, control strategy is sent to Bulk power system simulation system;
Bulk power system simulation system carries out control manipulation, more new trend section information according to control strategy to respective electric equipment For new trend section information, and it is sent to automatic voltage control system by intermediate communication data interface module;
Automatic voltage control system judges that the voltage in the actual operation parameters of new trend section information or power factor are No beyond setting limit value;
With regard under the same method of operation, trend section information is sent to assessment system by Bulk power system simulation system;
Assessment system uses numerical optimisation algorithms to generate assessment control strategy according to actual operation parameters, and generates according to it Assessment control strategy from electrical network index, stand in index, AVC operating index and Policy evaluation index to automatic voltage control system The effect of optimization of control strategy, control efficiency and the operability that generate are estimated.
The invention have the benefit that the trend section information of this method arbitrary actual area power grid of employing is right as emulation As, when voltage or the power of electrical equipment corresponding in trend section information actual operation parameters occur the most in limited time, by automatically Voltage control system reaches the control strategy of normal running status to electrical network of sening as an envoy to;
Assessment system is used to reach normal according to the trend section information of same actual area power grid to electrical network of sening as an envoy to afterwards The assessment control strategy of running status, and use assessment control strategy go the effect of optimization to control strategy, control efficiency and Operability is estimated;
This method is applied in the operation of actual electric network, and dispatcher can be selected by a small amount of regulation and control by assessment result Operation just can make electrical network reach the control strategy of normal operating condition, thus improves the service life of components and parts in electrical network, with Time can also be favorably improved the area power grid automatic voltage control system control effect to voltage, help dispatcher to existing AVC control strategy carries out reasonability and can implement the assessment of row.
Accompanying drawing explanation
Fig. 1 detects and the flow chart of appraisal procedure based on the automatic voltage control system closed loop under Bulk power system simulation system.
Fig. 2 is the grid structure figure of any area network system.
Fig. 3 be the optimized algorithm of automatic voltage control system and control algolithm with numerical optimisation algorithms in assessment system with regard to certain Region voltage figure after action under one method of operation.
Fig. 4 be the optimized algorithm of automatic voltage control system and control algolithm with numerical optimisation algorithms in assessment system with regard to certain Critical point power factor figure after action under one method of operation.
Detailed description of the invention
Below the detailed description of the invention of the present invention is described, in order to those skilled in the art understand this Bright, it should be apparent that the invention is not restricted to the scope of detailed description of the invention, from the point of view of those skilled in the art, As long as various changes limit and in the spirit and scope of the present invention that determine, these changes are aobvious and easy in appended claim Seeing, all utilize the innovation and creation of present inventive concept all at the row of protection.
Show with reference to Fig. 1, Fig. 1 and detect based on the automatic voltage control system closed loop under Bulk power system simulation system and assessment The flow chart of method, as it is shown in figure 1, the method 100 includes that step 101 is to step 107:
In a step 101, Bulk power system simulation system chooses arbitrary reality have the Intelligent Measurement storehouse organizing case from storage more The trend section information of area power grid, and described trend section information is sent to certainly by intermediate communication data interface module Dynamic voltage control system.
The above-mentioned Bulk power system simulation system mentioned includes system configuration module, basic data library module, real-time data base mould Block and computing module;
Wherein, system configuration module case in the Intelligent Measurement storehouse login management and;Basic data library module is used Power system is completed in depositing basic data (basic data includes line parameter circuit value, system component parameter, system partitioning information etc.) The voltage of each node, the Load flow calculation of power distribution situation, and calculation of tidal current is deposited.
Real time data library module is for depositing the real-time running data that power distribution network produces, and realizes leading of real-time running data Enter, derive and data difference that real-time running data and basic data exist, and the action plan that the AVC system deposited is given Displacement information (displacement information is capacitor switching gear position operation or transformer shift bit manipulation) in slightly is sent to calculate mould Block carries out topological analysis and dynamic parallel calculates;And
Computing module has been used for dynamic parallel and has calculated, and sets up Intelligent Measurement storehouse and load fluctuation case library, simulates various Power system operating mode or perturbation scheme.Here disturbance refers to electric load disturbance, such as impact load etc., transmits the most exactly Data acquisition parallel mode.
Before carrying out closed loop detection and appraisal procedure first, need to build in Bulk power system simulation system to comprise many groups case The Intelligent Measurement storehouse of example, the trend section information of actual area power grid therein comes from a case in Intelligent Measurement storehouse, And Intelligent Measurement storehouse builds in the following ways:
(information of importing is existing from reality to be first directed to the trend section information of actual area power grid based on CIM form The information that field gathers, it includes that various systematic parameter has device parameter, such as circuit, transformer etc., operational factor such as voltage, electricity Flow, meritorious, idle);
It is capable of identify that and the pro of real-time analytic operation by resolving to Bulk power system simulation system after data format conversion module (data of importing to form available file format at ADPSS i.e. power system full digital trigger technique simulator, i.e. to project file Corresponding data are mainly processed by the file format of pro form according to pro project file form);
Simulation actual the area normal operating condition of power system operation, improper and failure operation state (concrete root Carry out analogue simulation according to produced problem in on-the-spot actual motion, in Bulk power system simulation system, real system operational factor is entered Row reasonably adjusts, and has obtained the multiple systems method of operation, has had normal condition, abnormal condition and malfunction etc., builds Comprise the Intelligent Measurement storehouse organizing running status more) formed containing the Intelligent Measurement storehouses organizing cases more.
In a step 102, corresponding electricity during automatic voltage control system judges the actual operation parameters of trend section information Whether the voltage of gas equipment or power factor be beyond setting limit value.
When implementing, intermediate communication data interface module is by the multiple-channel output analog quantity in trend section information and switch position Confidence number is converted into, by data communication protocol IEC104 stipulations, remote measurement and the remote signalling information that dispatch automated system is capable of identify that; Actual operation parameters is the remote measurement that is capable of identify that of dispatch automated system and remote signalling information.The threshold values that sets therein reaches as expectation Voltage and power factor limit value.
In step 103, if the voltage in actual operation parameters or power factor are beyond setting limit value, then automatic electric is voltage-controlled System processed generates corresponding control strategy, and by intermediate communication data interface module, control strategy is sent to Bulk power system simulation System.
Automatic voltage control system is when judging the actual operation parameters of trend section information, and its runnable interface can show Each operating condition of transformer station equipment, locking information, busbar voltage, critical point power rate and the control strategy for currently practical electrical network Information etc..Its runnable interface can also show the operation information of currently practical electrical network simultaneously, and operation information includes operational factor, mould Type is safeguarded, remote signalling pre-processes information, operation information, power plant and substation's information, bus state, capacitive reactance device state and transformer state, it is simple to Safeguard AVC Controlling model, check all kinds of operational factor, plant stand, bus, equipment state, fully understand electric network state.
At step 104, Bulk power system simulation system carries out control manipulation according to control strategy to respective electric equipment, updates Trend section information is new trend section information, and is sent to automatism voltage control system by intermediate communication data interface module System.
Intermediate communication data interface module is when being transmitted new trend section information, and it is also to be believed by new trend section Multiple-channel output analog quantity in breath and switch position signal are converted into dispatching automation by data communication protocol IEC104 stipulations Remote measurement that system is capable of identify that and remote signalling information.
In one embodiment of the invention, if the voltage of corresponding electrical equipment or power factor in actual operation parameters Beyond setting limit value, automatic voltage control system uses AVC control algolithm or AVC optimized algorithm according to remote measurement and remote signalling information (owing to dispatch automated system is a commonly used system in current dispatching of power netwoks, automatic voltage control system therein AVC control algolithm and AVC optimized algorithm are also that system itself has, and this programme is how to use AVC control algolithm and AVC to optimize Algorithm generates control strategy and belongs to general knowledge, about how to generate repeats the most herein) generate corresponding transformer branch and change The control strategy of depressor switch.
Control strategy is changed into big electricity by standard data communications stipulations IEC61970 by intermediate communication data interface module Remote control that network simulation system is capable of identify that and remote regulating information.
Bulk power system simulation system carries out separating brake and closing operation according to remote control and remote regulating information to corresponding capacitance device branch road, right Transformer gear carries out upshifing and downshift operation;After control manipulation completes, and more new trend section information is new trend section Information.
In step 105, the voltage during automatic voltage control system judges the actual operation parameters of new trend section information Or whether power factor is beyond setting limit value.Step 101 to step 105 makes Bulk power system simulation system and automatic voltage control system Constitute a complete closed loop detection.
The actual motion after being regulated and controled the most only is judged by control strategy due to automatic voltage control system Whether parameter is beyond setting limit value, if occurring that part actual operation parameters exceeds the situation arranging value, it also will not be the most secondary Becoming control strategy, it carries out warning to remind scheduling artificially to regulate, and controls the normal work of electrical network.So now, and Can not determine that automatic voltage control system generates the whether economical rationality of control strategy optimization effect, control efficiency and operability , then need the control strategy that automatic voltage control system is generated to be estimated, with really in step 106 and step 107 Whether this control strategy fixed is the most reasonably to be scheduled for personnel to carry out reference.
In step 106, under the same method of operation, trend section information is sent to assessment system by Bulk power system simulation system System.
In step 107, assessment system uses numerical optimisation algorithms to generate assessment control strategy according to actual operation parameters, And according to its assessment control strategy generated from electrical network index, stand in index, AVC operating index and Policy evaluation index to automatically The effect of optimization of control strategy, control efficiency and operability that voltage control system generates are estimated.
In another embodiment of the present invention, assessment system uses numerical optimisation algorithms to generate according to actual operation parameters Assessment control strategy is mainly realized by the object function built, below the object function of logarithm value optimized algorithm carry out Illustrate:
m i n F = P l o s s = Σ i = 1 n G i j ( U i 2 + U j 2 - 2 U i U j cosθ i j )
Wherein, GijFor the transadmittance between node i and node j;Ui、UjFor node i, the voltage magnitude of j;θijFor node i, Phase angle difference between j, θijij
The bound for objective function of the numerical optimisation algorithms in this method includes equality constraint and inequality constraints, etc. Formula constraint is main considers trend equilibrium equation;
Inequality constraints is retrained by control variables constraint and state variable and forms, and wherein control variables includes except balance node Remaining generator outer goes out terminal voltage vector, adjustable transformer no-load voltage ratio and can throw the vector that capacitor is constituted;State variable includes respectively Node voltage amplitude, generator reactive are exerted oneself and critical point power factor.
Wherein, equality constraint is:
P i = U i ΣU j ( G i j cosθ i j + B i j sinθ i j ) Q i = U i ΣU j ( G i j sinθ i j - B i j cosθ i j )
Wherein, Pi、QiInjecting power for node i;UjFor node voltage amplitude;θijFor node i, the phase angle difference of j.
Control variables constraint is:
U G i m i n ≤ U G i ≤ U G i max , i ∈ N G ′ Q C i m i n ≤ Q C i ≤ Q C i m a x , i ∈ N C T K i m i n ≤ T K i ≤ T K i m a x , i ∈ N T
Wherein, UG min、UG maxBound for generator terminal voltage;QC min、QC maxIdle for existing shnt capacitor Bound;TK min、TK maxBound for transformer gear.
State variable retrains: certain critical point power factor scope is generally assigned to geological survey center in province tune centerTypically in area power grid runs, do not allow reactive power releasing, soHave at given Under merit scheduling mode, it can be deduced that main transformer on high-tension side reactive power in critical point limits, And the collection that critical point main transformer is constituted is combined into NTGK.Therefore, state variable constraint is as follows:
Q G i m i n ≤ Q G i ≤ Q G i m a x , i ∈ N G U i m i n ≤ U i ≤ U i m a x , i ∈ { N - N G } Q T i m i n ≤ Q T i ≤ Q T i max , i ∈ N T G K
Wherein, QG min、QG maxThe bound exerted oneself for generator reactive;Umin、UmaxFor node voltage bound; QTi min、QTi maxBound for critical point high voltage side of transformer reactive power.
The assessment control strategy provided assessment system below in conjunction with concrete actual electric network is to automatic voltage control system The effect of optimization of control strategy, control efficiency and the operability that generate are estimated:
The detected object of the present embodiment is the embedded automatic voltage control system of OPEN3000, automatic voltage control system Using integrated design with OPEN3000 monitoring system, SCADA system carries out data acquisition, obtains static network model from FES, Generated Controlling model by PAS modeling program, centered by 220kV transformer station, determine that administrative subordinate 110kV becomes according to real time information Power station, completes auto-partition, carries main transformer tap, capacitor or the throwing of reactor by controlling having in region-wide scope Cutting, in reaching control range, rate of qualified voltage is higher, the target that the whole network active loss simultaneously is less.
Choosing somewhere electrical network as test system, this electrical network is divided into 4 electrical island, bus number totally 141, plant stand number 37, mesh, wherein 8,220kV transformer station, 29,110kV transformer station, comprise two-winding transformer 43, three-winding transformer 32 Platform, transmission line of electricity 68, load 516, reactor 147, its system network shelf structure figure is shown in accompanying drawing 2.
The control strategy that automatic voltage control system is given under the multiple method of operation
It is in operation the various problems occurred for the area power grid of the automatic voltage control system that put into operation at present, such as power transformation Capacity reactance of standing frequently regulates, system control strategy is unreasonable, lack network-wide optimization algorithm etc..According to on-the-spot automatism voltage control The in esse problem of system carries out simulation case, changes system operation mode, is divided into normal, improper and failure operation shape State, the case library respectively above-mentioned different running status debugged and taken on a certain scale, mainly carry out and have AVC state to estimate Meter, Threshold Crossing Alert and locking information, control strategy realize, control to contrast with optimized algorithm the test contents such as detection, and from control The aspects such as strategy reasonability, action frequency and economy carry out comprehensive assessment to automatic voltage control system.
As a example by " region voltage strategy ", closed loop detection method is regulation system operation mode so that institute's survey region Voltage is the most higher or on the low side, and intra-zone divides 110kV and 10kV busbar voltage out-of-limit, forms an emulation case, is saved in Under Bulk power system simulation system assigned catalogue, run Bulk power system simulation system, carry out Bulk power system simulation system and OPEN3000 system Data interaction, arranging automatic voltage control system in the case of state estimation reaches 100% is control algolithm, generate phase The control strategy answered also is assigned to Bulk power system simulation system, after being adjusted transformer and capacitor, sees whether to reach Satisfied regulating effect, it is achieved that closed loop test under Bulk power system simulation systematic control algorithm.This time closed loop test terminates After, then this case is carried out Bulk power system simulation system optimization algorithm closed loop test, test process is identical with said process, only need to set Put different algorithms.Table 1 gives the regulating effect of Bulk power system simulation system under the part method of operation.
Table 1
As a example by " single stand idle strategy ", closed loop detection method is regulation system operation mode so that institute's survey region or There is idle deficient benefit or crosses benefit in single transformer station, and transformer reactive power constraints analyzes the control plan that automatic voltage control system provides Slightly, table 2 gives the regulating effect of Bulk power system simulation system under the part method of operation.
Table 2
The method of operation Regulating effect
Deficient benefit that region, ancient city is idle AVC shows without regulation measure
Region, ancient city is idle crosses benefit AVC shows without regulation measure
Nine station, ridges are mended without merits and demerits After AVC regulation, idle recovery is normal
Deficient benefit that Ma Jingzhan is idle After AVC regulation, idle recovery is normal
As can be seen from the table, under some method of operation, automatic voltage control system still suffers from some problems, Ke Neng There is no corresponding regulation measure in some cases, be not reaching to control target.Therefore the automatism voltage control system run in scene System need to improve further.
The control strategy contrast that the assessment strategy that assessment system is given and automatic voltage control system are given
The control strategy of detected automatic voltage control system is estimated, introduces the numerical optimization in assessment system and calculate Method is as reference, and contrast is detected automatic voltage control system and the control plan given by optimized algorithm under the same method of operation Slightly.The automatic voltage control system now arranging OPEN3000 system is non-control state, is switched by intermediate communication data-interface To Bulk power system simulation system and assessment system, Dynamic simulation case, start assessment system, select to carry out based on numerical optimisation algorithms Calculate and draw and assess control strategy accordingly.Table 3 gives under " downtown area overload " this method of operation detected The control strategy pair that the numerical optimisation algorithms of the control algolithm of automatic voltage control system, optimized algorithm and assessment system draws Ratio.
Table 3
From the point of view of action frequency, AVC control algolithm action frequency is 15 times;AVC optimized algorithm action frequency is 11 times;Number The action frequency of value optimized algorithm is 8 times;From the point of view of network loss, the network loss that numerical optimisation algorithms draws is minimum, and compares AVC control The network loss that algorithm draws reduces 1MW;Variation rate relatively AVC from the point of view of variation rate, after numerical optimisation algorithms action The variation rate that control algolithm obtains reduces by 0.443023%.From the point of view of carrying out contrast in terms of three above, numerical optimization is calculated Method all embodies the best control effect.
Examining three kinds of strategies control effect to downtown area voltage, its region voltage contrasts as shown in Figure 3.Can by Fig. 3 To find out, AVC control algolithm, optimized algorithm and numerical optimisation algorithms have preferably improvement for the voltage of whole downtown area Effect, wherein the improvement effect of numerical optimisation algorithms is best, the voltage operation level in whole region can be made to be more nearly specified Voltage.
The critical point power factor that is in operation also is an important objectives of examination, obtains under three kinds of different control strategies by comparing To critical point power factor examine, particular content is shown in Fig. 4.From fig. 4, it can be seen that numerical optimisation algorithms can be by the pass in city Mouth power factor controlling is to more than 0.95, and AVC control algolithm also has the brightest with optimized algorithm for critical point, region power factor Aobvious improvement.
From the point of view of above comparing result, the numerical optimisation algorithms of assessment system is whether from action frequency, network loss or right In region voltage and the regulation and control of critical point power factor, all show good control characteristic.It can be seen that current from The control strategy that dynamic voltage control system is given not is the most rational.
Evaluation index
From the whole network index, stand in terms of index, AVC operating index and Policy evaluation index etc. four to automatism voltage control System carries out comprehensive, the evaluation of overall process, carries out each side such as control strategy optimization effect, control efficiency, operability Assessment.Under the method for operation of " the whole network load is higher ", the strategy of automatic voltage control system is estimated, first calculates and remember Record initial power flow solutions, after the control strategy of automatic voltage control system adjusts, then the power flow solutions after statistics adjustment, and Two times result is estimated respectively, draws evaluation result and the comparative analysis of control strategy.
P11、P12、P13、P14、P15、P16、P17Represent the voltage out-of-limit before control strategy performs (beyond setting limit value) respectively Regulation, critical point power factor qualification rate, the whole network rate of qualified voltage, the whole network Network Loss Rate, equipment repetitive operation rate, the meritorious damage in single station Consumption, single station single Policy evaluation index of voltage out-of-limit rate 7, P21、P22、P23、P24、P25、P26、P27After representing strategy execution the most respectively Index.
First, assessment institute must index need to be calculated.Initial power flow solutions is drawn by Bulk power system simulation system-computed, And it is as follows to calculate its index according to result:
Table 4
P11 P12 P13 P14 P15 P16 P17
Desired value 1.15% 65.0% 88.89% 0.78% 0.00% 0.14% 1.62%
The control strategy that record automatic voltage control system uses control algolithm to provide is as follows:
Table 5
State before action State after action Action frequency
Ancient city 1,2 main transformer 3 grades 4 grades 1 grade * 2
1,2, No. 3 main transformers of Sanxing Pile 5 grades 6 grades 1 grade * 3
The soil pool 1,2 main transformer 3 grades 4 grades 1 grade * 2
New city 1,2 main transformer 2 grades 3 grades 1 grade * 2
White mausoleum 1 main transformer 4 grades 5 grades 1 grade * 1
Bright spirit palace 1,2 main transformer 2 grades 3 grades 1 grade * 2
Bright spirit electric capacity 2 tunnel, palace Disconnect Put into 1 time
Electric capacity 1 tunnel on the sunny side Disconnect Put into 1 time
Sanxing Pile electric capacity 2 tunnel Disconnect Put into 1 time
White electric capacity 3 tunnel, mausoleum Disconnect Put into 1 time
Go back to billows electric capacity 4 tunnel Disconnect Put into 1 time
Calculate power flow solutions after control strategy performs, and calculate each finger target value according to result, enumerate as follows:
Table 6
Type P21 P22 P23 P24 P25 P26 P27
Desired value 0 94% 100% 0.76% 0 0.14% 0
By result of calculation it can be seen that indices before and after automatic voltage control system action being carried clearly Rising, especially voltage is obtained for significantly raising with the volume qualification rate of critical point power factor.
The assessment control strategy that record assessment system uses numerical optimisation algorithms to provide is as follows:
Table 7
Calculate power flow solutions after assessment control strategy performs, and calculate each finger target value according to result, enumerate as follows:
Table 8
Type P21 P22 P23 P24 P25 P26 P27
Desired value 0 100% 100% 0.756% 0 0.125% 0
By result of calculation it can be seen that indices before and after numerical optimisation algorithms action being improved clearly, From calculated indices it can be seen that the assessment control strategy that is given of numerical optimisation algorithms is compared to automatism voltage control It is preferable that the control strategy that system is given controls effect, improves critical point power factor qualification rate, also reduces the whole network and single station Network Loss Rate.Therefore from the whole network index, stand in terms of index, AVC operating index and Policy evaluation index etc. to automatism voltage control System is estimated being relatively reasonable.

Claims (8)

1. detect and appraisal procedure based on the automatic voltage control system closed loop under Bulk power system simulation system, it is characterised in that bag Include following steps:
Bulk power system simulation system has the trend choosing arbitrary actual area power grid the Intelligent Measurement storehouse of many group cases to break from storage Surface information, and described trend section information is sent to the automatic of dispatch automated system by intermediate communication data interface module Voltage control system;
Described automatic voltage control system judges the voltage in the actual operation parameters of described trend section information or power factor Whether beyond setting limit value;
If beyond setting limit value, the most described automatic voltage control system generates corresponding control strategy, and is led to by described centre Described control strategy is sent to described Bulk power system simulation system by letter data interface module;
Described Bulk power system simulation system carries out control manipulation according to described control strategy to respective electric equipment, updates described trend Section information is new trend section information, and is sent to automatic voltage control system by intermediate communication data interface module;
Described automatic voltage control system judges that the voltage in the actual operation parameters of new trend section information or power factor are No beyond setting limit value;
With regard under the same method of operation, described trend section information is sent to assessment system by Bulk power system simulation system;
Described assessment system uses numerical optimisation algorithms to generate assessment control strategy according to described actual operation parameters, and according to it The assessment control strategy generated from electrical network index, stand in index, AVC operating index and Policy evaluation index to automatism voltage control The effect of optimization of control strategy, control efficiency and operability that system generates are estimated.
The most according to claim 1 based on the automatic voltage control system closed loop detection under Bulk power system simulation system and assessment Method, it is characterised in that the object function of described numerical optimisation algorithms is:
min F = P l o s s = Σ i = 1 n G i j ( U i 2 + U j 2 - 2 U i U j cosθ i j )
Wherein, GijFor the transadmittance between node i and node j;Ui、UjFor node i, the voltage magnitude of j;θijFor node i, j it Between phase angle difference, θijij
The most according to claim 2 based on the automatic voltage control system closed loop detection under Bulk power system simulation system and assessment Method, it is characterised in that the bound for objective function of described numerical optimisation algorithms includes equality constraint and inequality constraints, Equality constraint mainly considers trend equilibrium equation;
Inequality constraints is retrained by control variables constraint and state variable and forms, and wherein control variables includes in addition to balance node it Remaining generator goes out terminal voltage vector, adjustable transformer no-load voltage ratio and can throw the vector that capacitor is constituted;State variable includes each node Voltage magnitude, generator reactive are exerted oneself and critical point power factor.
4. according to arbitrary described the detecting based on the automatic voltage control system closed loop under Bulk power system simulation system of claim 1-3 And appraisal procedure, it is characterised in that described intermediate communication data interface module is by the multiple-channel output in described trend section information Analog quantity is converted into what dispatch automated system was capable of identify that with switch position signal by data communication protocol IEC104 stipulations Remote measurement and remote signalling information;Described actual operation parameters is the remote measurement that is capable of identify that of dispatch automated system and remote signalling information.
The most according to claim 4 based on the automatic voltage control system closed loop detection under Bulk power system simulation system and assessment Method, it is characterised in that if actual operation parameters is beyond setting limit value, described automatic voltage control system according to described remote measurement and Remote signalling information uses AVC control algolithm or AVC optimized algorithm to generate corresponding transformer branch and the control plan of transformer switch Slightly;
Control strategy is changed into described by standard data communications stipulations IEC61970 by described intermediate communication data interface module Remote control that Bulk power system simulation system is capable of identify that and remote regulating information;
Described Bulk power system simulation system carries out separating brake according to described remote control and remote regulating information to corresponding capacitance device branch road and grasps with closing a floodgate Make, transformer gear is upshiftd and downshift operation;After control manipulation completes, and to update described trend section information be new Trend section information.
6. according to examining based on the automatic voltage control system closed loop under Bulk power system simulation system described in claim 1,2,3 or 5 Survey and appraisal procedure, it is characterised in that the described limit value that sets is as expecting the voltage and the power factor limit value that reach.
7. according to examining based on the automatic voltage control system closed loop under Bulk power system simulation system described in claim 1,2,3 or 5 Survey and appraisal procedure, it is characterised in that described Bulk power system simulation system includes:
System configuration module, the login management of the case in Intelligent Measurement storehouse;
Basic data library module, completes the voltage of each node of power system, power distribution situation for depositing basic data Load flow calculation, and calculation of tidal current is deposited;
Real time data library module, for deposit power distribution network produce real-time running data, and realize real-time running data importing, The data difference that derivation and real-time running data exist with basic data, and the action policy that the AVC system deposited is given In displacement information be sent to computing module and carry out topological analysis and dynamic parallel and calculate;And
Computing module, has been used for dynamic parallel and has calculated, set up Intelligent Measurement storehouse and load fluctuation case library, simulate various electrical network The method of operation or perturbation scheme.
The most according to claim 7 based on the automatic voltage control system closed loop detection under Bulk power system simulation system and assessment Method, it is characterised in that the construction method in described Intelligent Measurement storehouse is:
Import the trend section information of actual area power grid based on CIM form;
Use data format conversion module that described trend section information analysis becomes Bulk power system simulation system be capable of identify that with in real time The pro project file of analytic operation;
The normal operating condition of simulation actual area power system operation, improper and failure operation state are formed and comprise many groups The Intelligent Measurement storehouse of case.
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