CN109103897A - A kind of configuring area method and apparatus of determining dynamic passive compensation equipment - Google Patents
A kind of configuring area method and apparatus of determining dynamic passive compensation equipment Download PDFInfo
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- CN109103897A CN109103897A CN201811142246.7A CN201811142246A CN109103897A CN 109103897 A CN109103897 A CN 109103897A CN 201811142246 A CN201811142246 A CN 201811142246A CN 109103897 A CN109103897 A CN 109103897A
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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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- 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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Abstract
The invention discloses a kind of configuring area methods of determining dynamic passive compensation equipment, this method comprises: establishing the system simulation model of power grid to be studied；Wherein, system simulation model include: M dynamic passive compensation equipment to be configured candidate website and N number of failure；Steady stability simulation calculation is carried out to candidate stations point, obtains first voltage weakness level index of the candidate website under steady stability dimension；Transient stability simulation calculation is carried out to candidate stations point, obtains second voltage weakness level index of the candidate website under transient stability dimension；According to first voltage weakness level index and second voltage weakness level index, the integrated voltage weakness level index of candidate website is calculated；This method combines voltage variety, the variable quantity of reactive power and the impact factor of neighboring candidate website of candidate website bus, comprehensively consider the order of priority of steady stability angle Yu transient stability angle, effectively and accurately obtains the configuring area of dynamic passive compensation equipment.
Description
Technical field
The present invention relates to technical field of power systems more particularly to a kind of configuring areas of determining dynamic passive compensation equipment
Method and apparatus.
Background technique
Currently, the voltage power-less of the main receiving end power grid in China (such as Jing-jin-ji region power grid, Yangtze River Delta power grid, Pearl River Delta power grid) is asked
Topic is just becoming more and more prominent.On the one hand reason of both mainly having is that multiple-circuit line concentrates (the more feed-ins of feed-in receiving end power grid
Receiving-end system) under steady state conditions customary DC reactive power consumption generally by converter station configuration capacitor and filter mend completely
It repays, but in the dc power recovery process after large disturbances occur for system, since busbar voltage is substantially fallen, converter station configuration
The idle power output of capacitor and filter is unable to satisfy direct current system reactive power consumption demand, and direct current system needs to inhale from AC network
A large amount of reactive power is received, if receiving-end system dynamic reactive enabling capabilities are insufficient, it would be possible to cause busbar voltage after large disturbances long
Phase can not restore, and Voltage Instability problem occur；It on the other hand is since the specific gravity of induction-motor load in power grid is continuously improved, in event
In failover procedure after barrier disappearance, induction-motor load can absorb a large amount of reactive power, therefore induction-motor load specific gravity is got over
Height, the dynamic reactive power for needing system to provide is bigger, if system dynamic reactive-load enabling capabilities are insufficient, system voltage may be long-term
It can not restore, Voltage Instability problem occur.
In order to improve the dynamic reactive enabling capabilities of power grid, need the suitable position in power grid that the dynamic of suitable capacity is installed
State reactive-load compensation equipment (such as phase modifier, STATCOM, SVC), how science determines the place for configuring dynamic passive compensation equipment
The problem of being urgent need to resolve, although it is existing it is some configuration dynamic passive compensation equipment installation position method, allocation plan without
Method comprehensively considers the effect of influencing each other between the order of priority and candidate website of steady stability angle and transient stability angle, nothing
Method accurately obtains the configuring area of dynamic passive compensation equipment.
Summary of the invention
The object of the present invention is to provide a kind of configuring area method and apparatus of determining dynamic passive compensation equipment, are carrying out
Can comprehensively consider when dynamic passive compensation device configuration region the order of priority of steady stability angle and transient stability angle with
And the effect of influencing each other between candidate website, effectively and accurately obtain the configuring area of dynamic passive compensation equipment.
The embodiment of the invention provides a kind of configuring area methods of determining dynamic passive compensation equipment, comprising:
Establish the system simulation model of power grid to be studied；Wherein, the system simulation model includes: M dynamics to be configured
The candidate website of reactive-load compensation equipment and N number of failure；
Steady stability simulation calculation is carried out to the candidate stations point, obtains the candidate website under steady stability dimension
First voltage weakness level index；
Transient stability simulation calculation is carried out to the candidate stations point, obtains the candidate website under transient stability dimension
Second voltage weakness level index；
According to the first voltage weakness level index and the second voltage weakness level index, the candidate stations are calculated
The integrated voltage weakness level index of point；
Height sequence is carried out to the integrated voltage weakness level index, determines that each candidate site configuration dynamic reactive is mended
Repay the sequencing of equipment.
Preferably, described that steady stability simulation calculation is carried out to the candidate stations point, the candidate website is obtained in static state
Stablize the first voltage weakness level index under dimension, specifically include:
Reactive disturbance is carried out to any one candidate stations point；
The voltage of the variable quantity and bus of reactive power after reactive disturbance occurs according to any one candidate website
Variable quantity calculates the voltage power-less sensitivity factor of any one candidate website；
According to the idle function of the active power of systems exchange, systems exchange before any one candidate website generation reactive disturbance
The voltage value and the voltage power-less sensitivity factor of rate, bus calculate the system support strength of any one candidate website
Index；
The variable quantity of the voltage of bus after reactive disturbance occurs according to any two neighboring candidate website, calculates any two
The impact factor of a neighboring candidate website；
According to the impact factor of the system support strength index and any two neighboring candidate website, described in calculating
The first voltage weakness level index of candidate website.
Preferably, the variable quantity that the reactive power after reactive disturbance occurs according to any one candidate website and mother
The variable quantity of the voltage of line calculates the voltage power-less sensitivity factor of any one candidate website, specifically includes:
According to formula VperQi=Δ Ui/ΔQi, calculate the voltage power-less sensitivity factor of i-th of candidate website；
Wherein, Δ UiFor the variable quantity of the voltage of bus after i-th of candidate website generation reactive disturbance；ΔQiIt is waited for i-th
The variable quantity of reactive power after reactive disturbance occurs for selective calling point.
Preferably, active power, the system that systems exchange before reactive disturbance occurs according to any one candidate website
The reactive power of exchange, the voltage value of bus and the voltage power-less sensitivity factor calculate any one candidate website
System support strength index, specifically includes:
According to formulaCalculate the system support strength index of i-th of candidate website；
Wherein, PNThe active power of systems exchange before reactive disturbance occurs for i-th of candidate website；QNFor i-th of candidate stations
The reactive power of systems exchange before reactive disturbance occurs for point；UNThe voltage of bus before reactive disturbance occurs for i-th of candidate website
Value.
Preferably, the variation of the voltage that the bus after reactive disturbance occurs according to any two neighboring candidate website
Amount calculates the impact factor of any two neighboring candidate website, specifically includes:
According to formula MIIFji=Δ Uj/ΔUi, i-th of candidate website is calculated to the impact factor of j-th candidates website；
Wherein, Δ UjFor the variable quantity of the voltage of bus after j-th candidates website generation reactive disturbance.
Preferably, the influence according to the system support strength index and any two neighboring candidate website because
Son calculates the first voltage weakness level index of the candidate website, specifically includes:
According to formulaCalculate the first voltage weakness degree of i-th of candidate website
Index.
Preferably, which is characterized in that it is described that transient stability simulation calculation is carried out to the candidate stations point, obtain the candidate
Second voltage weakness level index of the website under transient stability dimension, specifically includes:
Transient stability scanning one by one is carried out to N number of failure to calculate, and after N number of failure is removed, is calculated any one
The busbar voltage of a candidate's website is less than duration when first voltage threshold value；
According to formulaThe duration is normalized；
Wherein, TjiAfter being removed for j failure, when the busbar voltage of i-th of candidate website is less than first voltage threshold value
Duration；TthTo judge the crash time needed for system is in transient voltage unstability；λ≥1；
According to formulaCalculate the second voltage weakness level index of the candidate website；
Wherein, BRZWiFor the second voltage weakness level index of i-th of candidate website；N is the sum of failure.
Preferably, described according to the first voltage weakness level index and the second voltage weakness level index, meter
The integrated voltage weakness level index for calculating the candidate website, specifically includes:
According to formula BRZHi=c1×BRJWi+c2×BRZWi, calculate the integrated voltage weakness degree of the candidate website
Index；
Wherein, BRZHiFor the integrated voltage weakness level index of i-th of candidate website；c1For the first voltage weakness journey
Spend the weight coefficient of index, c2For the weight coefficient of the second voltage weakness level index, c1+c2=1.
The embodiment of the invention also provides a kind of configuring area devices of determining dynamic passive compensation equipment, comprising:
System simulation model module is established, for establishing the system simulation model of power grid to be studied；Wherein, the system is imitative
True mode include: M dynamic passive compensation equipment to be configured candidate website and N number of failure；
First voltage weakness level index computing module, for carrying out steady stability simulation calculation to the candidate stations point,
Obtain first voltage weakness level index of the candidate website under steady stability dimension；
Second voltage weakness level index computing module, for carrying out transient stability simulation calculation to the candidate stations point,
Obtain second voltage weakness level index of the candidate website under transient stability dimension；
Integrated voltage weakness level index computing module, for according to the first voltage weakness level index and described the
Two voltage weakness level indexs calculate the integrated voltage weakness level index of the candidate website；
Dynamic passive compensation device configuration regions module is determined, for arranging the integrated voltage weakness level index
Sequence determines the sequencing of each candidate site configuration dynamic passive compensation equipment.
The embodiment of the invention also provides a kind of configuring area devices of determining dynamic passive compensation equipment, including processing
Device, memory and storage in the memory and are configured as the computer program executed by the processor, the place
Reason device realizes the configuring area method of the determination dynamic passive compensation equipment when executing the computer program.
Compared with the existing technology, the configuring area side of a kind of determining dynamic passive compensation equipment provided in an embodiment of the present invention
The beneficial effect of method is: the configuring area method of the determining dynamic passive compensation equipment, comprising: establish power grid to be studied
System simulation model；Wherein, the system simulation model includes: the candidate website and N of M dynamic passive compensation equipment to be configured
A failure；Steady stability simulation calculation is carried out to the candidate stations point, obtains the candidate website under steady stability dimension
First voltage weakness level index；Transient stability simulation calculation is carried out to the candidate stations point, obtains the candidate website temporary
State stablizes the second voltage weakness level index under dimension；According to the first voltage weakness level index and the second voltage
Weak level index calculates the integrated voltage weakness level index of the candidate website；The integrated voltage weakness degree is referred to
Mark carries out height sequence, determines the sequencing of each candidate site configuration dynamic passive compensation equipment.This method combines candidate
The impact factor of the voltage variety of the bus of website, the variable quantity of reactive power and neighboring candidate website is carrying out dynamic
The order of priority and time of steady stability angle Yu transient stability angle can be comprehensively considered when reactive-load compensation equipment configuring area
The effect of influencing each other between selective calling point, effectively and accurately obtains the configuring area of dynamic passive compensation equipment.
Detailed description of the invention
Fig. 1 is that a kind of process of the configuring area method of determining dynamic passive compensation equipment provided in an embodiment of the present invention is shown
It is intended to；
Fig. 2 is a kind of configuring area method configuration dynamic of determining dynamic passive compensation equipment provided in an embodiment of the present invention
Simulation curve figure after reactive-load compensation equipment；
Fig. 3 is that a kind of structure of the configuring area device of determining dynamic passive compensation equipment provided in an embodiment of the present invention is shown
It is intended to.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Referring to Fig. 1, it is a kind of configuring area of determining dynamic passive compensation equipment provided in an embodiment of the present invention
The flow diagram of method, the configuring area method of the determining dynamic passive compensation equipment, comprising:
S100: the system simulation model of power grid to be studied is established；Wherein, the system simulation model includes: M to be configured
The candidate website of dynamic passive compensation equipment and N number of failure；
S200: carrying out steady stability simulation calculation to the candidate stations point, obtains the candidate website and ties up in steady stability
First voltage weakness level index under degree；
S300: carrying out transient stability simulation calculation to the candidate stations point, obtains the candidate website and ties up in transient stability
Second voltage weakness level index under degree；
S400: according to the first voltage weakness level index and the second voltage weakness level index, described in calculating
The integrated voltage weakness level index of candidate website；
S500: carrying out height sequence to the integrated voltage weakness level index, determines each candidate site configuration dynamic
The sequencing of reactive-load compensation equipment.
In the present embodiment, when carrying out dynamic passive compensation device configuration region, by comprehensively considering steady stability
The order of priority of angle and transient stability angle can reflect the static state and transient characterisitics of network system comprehensively, so that each time
Select the sequencing of site configuration dynamic passive compensation equipment more scientific and effective.
In an alternative embodiment, S100: the system simulation model of power grid to be studied is established；Wherein, the system
Simulation model include: M dynamic passive compensation equipment to be configured candidate website and N number of failure, specifically include:
The candidate website of the M dynamic passive compensation equipment to be configured may be configured as: candidate set of sites S={ S1,
S2..., SM, SiFor i-th of candidate website, M is candidate website number；
N number of failure may be configured as fault set F={ F1, F2..., FN, FjFor j-th of failure, N is failure total number.
In an alternative embodiment, S200: carrying out steady stability simulation calculation to the candidate stations point, obtains described
First voltage weakness level index of the candidate website under steady stability dimension, specifically includes:
Reactive disturbance is carried out to any one candidate stations point；
The voltage of the variable quantity and bus of reactive power after reactive disturbance occurs according to any one candidate website
Variable quantity calculates the voltage power-less sensitivity factor of any one candidate website；
According to the idle function of the active power of systems exchange, systems exchange before any one candidate website generation reactive disturbance
The voltage value and the voltage power-less sensitivity factor of rate, bus calculate the system support strength of any one candidate website
Index；
The variable quantity of the voltage of bus after reactive disturbance occurs according to any two neighboring candidate website, calculates any two
The impact factor of a neighboring candidate website；
According to the impact factor of the system support strength index and any two neighboring candidate website, described in calculating
The first voltage weakness level index of candidate website.
In the present embodiment, the numerical value of the first voltage weakness level index of the candidate website is bigger, illustrates the candidate
Site configuration dynamic passive compensation equipment is stronger to the voltage support effect of system entirety；Wherein, by candidate website system
System watt level, the voltage sensibility index of bus and two neighboring candidate websites impact factor comprehensively consider, can be with
Effectively calculate the first voltage weakness level index of candidate website.
In an alternative embodiment, the reactive power occurred after reactive disturbance according to any one candidate website
Variable quantity and bus voltage variable quantity, calculate the voltage power-less sensitivity factor of any one candidate website, specifically
Include:
According to formula VperQi=Δ Ui/ΔQi, calculate the voltage power-less sensitivity factor of i-th of candidate website；
Wherein, Δ UiFor the variable quantity of the voltage of bus after i-th of candidate website generation reactive disturbance；ΔQiIt is waited for i-th
The variable quantity of reactive power after reactive disturbance occurs for selective calling point.
In an alternative embodiment, described according to systems exchange before any one candidate website generation reactive disturbance
Active power, the reactive power of systems exchange, bus voltage value and the voltage power-less sensitivity factor, calculate it is any one
The system support strength index of a candidate's website, specifically includes:
According to formulaCalculate the system support strength index of i-th of candidate website；
Wherein, PNThe active power of systems exchange before reactive disturbance occurs for i-th of candidate website；QNFor i-th of candidate stations
The reactive power of systems exchange before reactive disturbance occurs for point；UNThe voltage of bus before reactive disturbance occurs for i-th of candidate website
Value.
In an alternative embodiment, the bus occurred after reactive disturbance according to any two neighboring candidate website
Voltage variable quantity, calculate any two neighboring candidate website impact factor, specifically include:
According to formula MIIFji=Δ Uj/ΔUi, i-th of candidate website is calculated to the impact factor of j-th candidates website；
Wherein, Δ UjFor the variable quantity of the voltage of bus after j-th candidates website generation reactive disturbance.
In an alternative embodiment, described according to the system support strength index and the adjacent time of any two
The impact factor of selective calling point calculates the first voltage weakness level index of the candidate website, specifically includes:
According to formulaCalculate the first voltage weakness degree of i-th of candidate website
Index.
In the present embodiment, pass through the shadow to the system support strength index and any two neighboring candidate website
It rings the factor to be comprehensively considered, when configuring the dynamic passive compensation equipment, the electricity of candidate website itself can be combined
Press support strength and the influence of candidate's website to other websites.
In an alternative embodiment, S300: carrying out transient stability simulation calculation to the candidate stations point, obtains described
Second voltage weakness level index of the candidate website under transient stability dimension, specifically includes:
Transient stability scanning one by one is carried out to N number of failure to calculate, and after N number of failure is removed, is calculated any one
The busbar voltage of a candidate's website is less than duration when first voltage threshold value；
According to formulaThe duration is normalized；
Wherein, TjiAfter being removed for j failure, when the busbar voltage of i-th of candidate website is less than first voltage threshold value
Duration；TthTo judge the crash time needed for system is in transient voltage unstability；λ≥1；
According to formulaCalculate the second voltage weakness level index of the candidate website；
Wherein, BRZWiFor the second voltage weakness level index of i-th of candidate website；N is the sum of failure.
In the present embodiment, it is calculated by carrying out transient stability scanning to fault set, can reflect transient stability dimension comprehensively
Under each candidate website voltage weakness degree；The second voltage weakness level index of candidate's website is bigger, illustrates the candidate
Site configuration dynamic passive compensation equipment is stronger to the voltage support effect of system entirety；Wherein, the first voltage threshold value root
The low voltage threshold set according to actual conditions；λ can value based on practical experience, but λ >=1 should be met.
In an alternative embodiment, S400: according to the first voltage weakness level index and the second voltage
Weak level index calculates the integrated voltage weakness level index of the candidate website, specifically includes:
According to formula BRZHi=c1×BRJWi+c2×BRZWi, calculate the integrated voltage weakness degree of the candidate website
Index；
Wherein, BRZHiFor the integrated voltage weakness level index of i-th of candidate website；c1For the first voltage weakness journey
Spend the weight coefficient of index, c2For the weight coefficient of the second voltage weakness level index, c1+c2=1.
In the present embodiment, the demand of two static dimension, transient stability dimensions is combined, candidate stations can be quantitatively calculated
The order of priority of point enables this field researcher quickly to determine that dynamic passive compensation equipment distributes zone scheme rationally.
Below by taking the 5 candidate websites drafted and 20 failures as an example, determining dynamic reactive provided by the invention is mended
The configuring area method for repaying equipment is illustrated:
According to the actual conditions of candidate website select S1~S5 totally 5 websites constitute candidate set of sites S1, S2, S3, S4,
S5 } and 20 typical faults compositions fault set { F1, F2 ..., F20 }；
The data and some system values of each candidate's website are as follows:
The first voltage threshold value UthFor 0.9pu, the duration TthTake 1s, λ value 1.5, c1Take 0.8, c2It takes
0.2；
After step S200 of the present invention processing, the corresponding system support strength achievement data of 5 candidate's websites is obtained
It is specific as follows with first voltage weakness level index data:
[ST1 … ST5]=[0.0451 0.0586 0.0541 0.0287 0.0600]
[BRJW1 … BRJW5]=[0.0923 0.0859 0.0828 0.0782 0.0930]
After step S300 of the present invention processing, the corresponding second voltage weakness level index of 5 candidate's websites is obtained
Data, specific as follows:
[BRZW1 … BRZW5]=[0.3068 0.2750 0.2578 0.2808 0.2970]
After step S400 of the present invention processing, the corresponding integrated voltage weakness level index of 5 candidate's websites is obtained
Data, specific as follows:
[BRZH1 … BRZH5]=[0.1352 0.1237 0.1178 0.1187 0.1338]
After step S500 of the present invention processing, the configuration order of priority of each candidate's website is S1, S5, S2, S4, S3.
Referring to Fig. 2, it is a kind of configuring area side of determining dynamic passive compensation equipment provided in an embodiment of the present invention
Method configures the simulation curve figure after dynamic passive compensation equipment；It can analyze and obtain by Fig. 2, busbar voltage is risen to
When required recovery value, set in S1 candidate site configuration dynamic passive compensation equipment ratio in S5 candidate's site configuration dynamic passive compensation
The effect being on the waiting list is more obvious, it can be seen that, a kind of configuring area of determining dynamic passive compensation equipment provided by the invention
Method is the configuring area that can effectively and accurately obtain dynamic passive compensation equipment, keeps configuring area more scientific and effective.
Referring to Fig. 3, it is a kind of configuring area dress of determining dynamic passive compensation equipment provided in an embodiment of the present invention
The structural schematic diagram set, the configuring area device of the determining dynamic passive compensation equipment, comprising:
System simulation model module 1 is established, for establishing the system simulation model of power grid to be studied；Wherein, the system
Simulation model include: M dynamic passive compensation equipment to be configured candidate website and N number of failure；
First voltage weakness level index computing module 2, for carrying out steady stability simulation calculation to the candidate stations point,
Obtain first voltage weakness level index of the candidate website under steady stability dimension；
Second voltage weakness level index computing module 3, for carrying out transient stability simulation calculation to the candidate stations point,
Obtain second voltage weakness level index of the candidate website under transient stability dimension；
Integrated voltage weakness level index computing module 4, for according to the first voltage weakness level index and described
Second voltage weakness level index calculates the integrated voltage weakness level index of the candidate website；
Dynamic passive compensation device configuration regions module 5 is determined, for carrying out to the integrated voltage weakness level index
Sequence determines the sequencing of each candidate site configuration dynamic passive compensation equipment.
In an alternative embodiment, system simulation model module 1 is established, comprising:
Candidate set of sites unit is drafted, the candidate website for the M dynamic passive compensation equipment to be configured is settable
Are as follows: candidate set of sites S={ S1, S2..., SM, SiFor i-th of candidate website, M is candidate website number；
Fault set unit is set, may be configured as fault set F={ F for N number of failure1, F2..., FN, FjIt is j-th
Failure, N are failure total number.
In an alternative embodiment, first voltage weakness level index computing module 2 includes:
Reactive disturbance unit, for carrying out reactive disturbance to any one candidate stations point；
Voltage power-less sensitivity factor computing unit, for according to the nothing after any one candidate website generation reactive disturbance
The variable quantity of the voltage of the variable quantity and bus of function power, calculate the voltage power-less sensitivity of any one candidate website because
Son；
System support strength indicator calculating unit is handed over for system before reactive disturbance occurs according to any one candidate website
The reactive power of the active power, systems exchange changed, the voltage value of bus and the voltage power-less sensitivity factor calculate and appoint
It anticipates the system support strength index of a candidate website；
The impact factor computing unit of neighboring candidate website, for idle disturb to occur according to any two neighboring candidate website
The variable quantity of the voltage of bus after dynamic calculates the impact factor of any two neighboring candidate website；
First voltage weakness level index computing unit, for according to the system support strength index and described any two
The impact factor of a neighboring candidate website calculates the first voltage weakness level index of the candidate website.
In the present embodiment, the numerical value of the first voltage weakness level index of the candidate website is bigger, illustrates the candidate
Site configuration dynamic passive compensation equipment is stronger to the voltage support effect of system entirety；Wherein, by candidate website system
System watt level, the voltage sensibility index of bus and two neighboring candidate websites impact factor comprehensively consider, can be with
Effectively calculate the first voltage weakness level index of candidate website.
In an alternative embodiment, second voltage weakness level index computing module 3 includes:
Duration calculation unit is calculated for carrying out transient stability scanning one by one to N number of failure, and in N number of event
After barrier is removed, duration of the busbar voltage of any one candidate website less than first voltage threshold value when is calculated；
Normalized unit, for the duration to be normalized；
Second voltage weakness level index computing unit, duration and event after being normalized for basis
Barrier collection calculates the second voltage weakness level index of the candidate website.
In the present embodiment, it is calculated by carrying out transient stability scanning to fault set, can reflect transient stability dimension comprehensively
Under each candidate website voltage weakness degree；The second voltage weakness level index of candidate's website is bigger, illustrates the candidate
Site configuration dynamic passive compensation equipment is stronger to the voltage support effect of system entirety.
In an alternative embodiment, integrated voltage weakness level index computing module 4 includes:
Integrated voltage weakness level index computing unit, for according to the first voltage weakness level index and described the
Two voltage weakness level indexs calculate the integrated voltage weakness level index of candidate website.
In the present embodiment, the demand of two static dimension, transient stability dimensions is combined, candidate stations can be quantitatively calculated
The order of priority of point enables this field researcher quickly to determine that dynamic passive compensation equipment distributes zone scheme rationally.
The embodiment of the invention also provides a kind of configuring area devices of determining dynamic passive compensation equipment, including processing
Device, memory and storage in the memory and are configured as the computer program executed by the processor, the place
Reason device realizes the configuring area method as described above for determining dynamic passive compensation equipment when executing the computer program.
Illustratively, the computer program can be divided into one or more module/units, one or more
A module/unit is stored in the memory, and is executed by the processor, to complete the present invention.It is one or more
A module/unit can be the series of computation machine program instruction section that can complete specific function, and the instruction segment is for describing institute
State implementation procedure of the computer program in the configuring area device of the determining dynamic passive compensation equipment.For example, the meter
Calculation machine program can be divided into the functional module of the configuring area device of determination dynamic passive compensation equipment as shown in Figure 3.
The configuring area device of the determining dynamic passive compensation equipment can be desktop PC, notebook, palm
Computer and cloud server etc. calculate equipment.The configuring area device of the determining dynamic passive compensation equipment may include, but not
It is only limitted to, processor, memory.It will be understood by those skilled in the art that the schematic diagram is only to determine dynamic passive compensation
The example of the configuring area device of equipment does not constitute the restriction to the configuring area device for determining dynamic passive compensation equipment,
It may include perhaps combining certain components or different components than illustrating more or fewer components, such as the determination is moved
The configuring area device of state reactive-load compensation equipment can also include input-output equipment, network access equipment, bus etc..
Alleged processor can be central processing unit (Central Processing Unit, CPU), can also be it
His general processor, digital signal processor (Digital Signal Processor, DSP), specific integrated circuit
(Application Specific Integrated Circuit, ASIC), ready-made programmable gate array (Field-
Programmable Gate Array, FPGA) either other programmable logic device, discrete gate or transistor logic,
Discrete hardware components etc..General processor can be microprocessor or the processor is also possible to any conventional processor
Deng the processor is the control centre of the configuring area device of the determining dynamic passive compensation equipment, utilizes various interfaces
The various pieces of the configuring area device of dynamic passive compensation equipment are entirely determined with connection.
The memory can be used for storing the computer program and/or module, and the processor is by operation or executes
Computer program in the memory and/or module are stored, and calls the data being stored in memory, described in realization
Determine the various functions of the configuring area device of dynamic passive compensation equipment.The memory can mainly include storing program area and
Storage data area, wherein storing program area can (such as the sound of application program needed for storage program area, at least one function
Playing function, image player function etc.) etc.；Storage data area, which can be stored, uses created data (such as sound according to mobile phone
Frequency evidence, phone directory etc.) etc..In addition, memory may include high-speed random access memory, it can also include non-volatile deposit
Reservoir, such as hard disk, memory, plug-in type hard disk, intelligent memory card (Smart Media Card, SMC), secure digital
(Secure Digital, SD) card, flash card (Flash Card), at least one disk memory, flush memory device or other
Volatile solid-state part.
It should be noted that the apparatus embodiments described above are merely exemplary, wherein described be used as separation unit
The unit of explanation may or may not be physically separated, and component shown as a unit can be or can also be with
It is not physical unit, it can it is in one place, or may be distributed over multiple network units.It can be according to actual
It needs that some or all of the modules therein is selected to achieve the purpose of the solution of this embodiment.In addition, device provided by the invention
In embodiment attached drawing, the connection relationship between module indicate between them have communication connection, specifically can be implemented as one or
A plurality of communication bus or signal wire.Those of ordinary skill in the art are without creative efforts, it can understand
And implement.
Compared with the existing technology, the configuring area side of a kind of determining dynamic passive compensation equipment provided in an embodiment of the present invention
The beneficial effect of method is: the configuring area method of the determining dynamic passive compensation equipment, comprising: establish power grid to be studied
System simulation model；Wherein, the system simulation model includes: the candidate website and N of M dynamic passive compensation equipment to be configured
A failure；Steady stability simulation calculation is carried out to the candidate stations point, obtains the candidate website under steady stability dimension
First voltage weakness level index；Transient stability simulation calculation is carried out to the candidate stations point, obtains the candidate website temporary
State stablizes the second voltage weakness level index under dimension；According to the first voltage weakness level index and the second voltage
Weak level index calculates the integrated voltage weakness level index of the candidate website；The integrated voltage weakness degree is referred to
Mark carries out height sequence, determines the sequencing of each candidate site configuration dynamic passive compensation equipment.This method combines candidate
The impact factor of the voltage variety of the bus of website, the variable quantity of reactive power and neighboring candidate website is carrying out dynamic
The order of priority and time of steady stability angle Yu transient stability angle can be comprehensively considered when reactive-load compensation equipment configuring area
The effect of influencing each other between selective calling point, effectively and accurately obtains the configuring area of dynamic passive compensation equipment.
The above is a preferred embodiment of the present invention, it is noted that for those skilled in the art
For, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also considered as
Protection scope of the present invention.
Claims (10)
1. a kind of configuring area method of determining dynamic passive compensation equipment characterized by comprising
Establish the system simulation model of power grid to be studied；Wherein, the system simulation model includes: M dynamic reactives to be configured
The candidate website of compensation equipment and N number of failure；
Steady stability simulation calculation is carried out to the candidate stations point, obtains first of the candidate website under steady stability dimension
Voltage weakness level index；
Transient stability simulation calculation is carried out to the candidate stations point, obtains second of the candidate website under transient stability dimension
Voltage weakness level index；
According to the first voltage weakness level index and the second voltage weakness level index, the candidate website is calculated
Integrated voltage weakness level index；
Height sequence is carried out to the integrated voltage weakness level index, determines that each candidate site configuration dynamic passive compensation is set
Standby sequencing.
2. determining the configuring area method of dynamic passive compensation equipment as described in claim 1, which is characterized in that described to institute
It states candidate stations point and carries out steady stability simulation calculation, it is weak to obtain first voltage of the candidate website under steady stability dimension
Level index specifically includes:
Reactive disturbance is carried out to any one candidate stations point；
The variation of the voltage of the variable quantity and bus of reactive power after reactive disturbance occurs according to any one candidate website
Amount calculates the voltage power-less sensitivity factor of any one candidate website；
According to any one candidate website occur the active power of systems exchange before reactive disturbance, the reactive power of systems exchange,
The voltage value of bus and the voltage power-less sensitivity factor, the system support strength for calculating any one candidate website refer to
Mark；
The variable quantity of the voltage of bus after reactive disturbance occurs according to any two neighboring candidate website, calculates any two phase
The impact factor of adjacent candidate's website；
According to the impact factor of the system support strength index and any two neighboring candidate website, the candidate is calculated
The first voltage weakness level index of website.
3. determining the configuring area method of dynamic passive compensation equipment as claimed in claim 2, which is characterized in that the basis
The variable quantity of the variable quantity of reactive power after reactive disturbance and the voltage of bus occurs for any one candidate website, calculates and appoints
It anticipates the voltage power-less sensitivity factor of a candidate website, specifically includes:
According to formulaCalculate the voltage power-less sensitivity factor of i-th of candidate website；
Wherein, Δ UiFor the variable quantity of the voltage of bus after i-th of candidate website generation reactive disturbance；ΔQiFor i-th of candidate stations
The variable quantity of reactive power after reactive disturbance occurs for point.
4. determining the configuring area method of dynamic passive compensation equipment as claimed in claim 2, which is characterized in that the basis
Any one candidate website occur the active power of systems exchange before reactive disturbance, the reactive power of systems exchange, bus electricity
Pressure value and the voltage power-less sensitivity factor calculate the system support strength index of any one candidate website, specific to wrap
It includes:
According to formulaCalculate the system support strength index of i-th of candidate website；
Wherein, PNThe active power of systems exchange before reactive disturbance occurs for i-th of candidate website；QNFor i-th of candidate website hair
The reactive power of systems exchange before raw reactive disturbance；UNThe voltage value of bus before reactive disturbance occurs for i-th of candidate website.
5. determining the configuring area method of dynamic passive compensation equipment as claimed in claim 2, which is characterized in that the basis
The variable quantity of the voltage of bus after reactive disturbance occurs for any two neighboring candidate website, calculates any two neighboring candidate station
The impact factor of point, specifically includes:
According to formula MIIFji=Δ Uj/ΔUi, i-th of candidate website is calculated to the impact factor of j-th candidates website；
Wherein, Δ UjFor the variable quantity of the voltage of bus after j-th candidates website generation reactive disturbance.
6. determining the configuring area method of dynamic passive compensation equipment as claimed in claim 2, which is characterized in that the basis
The impact factor of the system support strength index and any two neighboring candidate website calculates the of the candidate website
One voltage weakness level index, specifically includes:
According to formulaThe first voltage weakness degree for calculating i-th of candidate website refers to
Mark.
7. determining the configuring area method of dynamic passive compensation equipment as described in claim 1, which is characterized in that described to institute
It states candidate stations point and carries out transient stability simulation calculation, it is weak to obtain second voltage of the candidate website under transient stability dimension
Level index specifically includes:
Transient stability scanning one by one is carried out to N number of failure to calculate, and after N number of failure is removed, calculates any one time
The busbar voltage of selective calling point is less than duration when first voltage threshold value；
According to formulaThe duration is normalized；
Wherein, TjiAfter being removed for j failure, continue when the busbar voltage of i-th of candidate website is less than first voltage threshold value
Time；TthTo judge the crash time needed for system is in transient voltage unstability；λ≥1；
According to formulaCalculate the second voltage weakness level index of the candidate website；
Wherein, BRZWiFor the second voltage weakness level index of i-th of candidate website；N is the sum of failure.
8. determining the configuring area method of dynamic passive compensation equipment as described in claim 1, which is characterized in that the basis
The first voltage weakness level index and the second voltage weakness level index calculate the integrated voltage of the candidate website
Weak level index, specifically includes:
According to formula BRZHi=c1×BRJWi+c2×BRZWi, the integrated voltage weakness degree for calculating the candidate website refers to
Mark；
Wherein, BRZHiFor the integrated voltage weakness level index of i-th of candidate website；c1Refer to for the first voltage weakness degree
Target weight coefficient, c2For the weight coefficient of the second voltage weakness level index, c1+c2=1.
9. a kind of configuring area device of determining dynamic passive compensation equipment characterized by comprising
System simulation model module is established, for establishing the system simulation model of power grid to be studied；Wherein, the system emulation mould
Type include: M dynamic passive compensation equipment to be configured candidate website and N number of failure；
First voltage weakness level index computing module is obtained for carrying out steady stability simulation calculation to the candidate stations point
First voltage weakness level index of the candidate's website under steady stability dimension；
Second voltage weakness level index computing module is obtained for carrying out transient stability simulation calculation to the candidate stations point
Second voltage weakness level index of the candidate's website under transient stability dimension；
Integrated voltage weakness level index computing module, for according to the first voltage weakness level index and second electricity
Ironed weak level index calculates the integrated voltage weakness level index of the candidate website；
Determine dynamic passive compensation device configuration regions module, for being ranked up to the integrated voltage weakness level index,
Determine the sequencing of each candidate site configuration dynamic passive compensation equipment.
10. a kind of configuring area device of determining dynamic passive compensation equipment, which is characterized in that including processor, memory with
And the computer program executed by the processor is stored in the memory and is configured as, described in the processor execution
The configuring area for determining dynamic passive compensation equipment as claimed in any of claims 1 to 8 in one of claims is realized when computer program
Method.
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