CN110212548A - The configuration method and device of multi-infeed DC receiving-end system STATCOM - Google Patents
The configuration method and device of multi-infeed DC receiving-end system STATCOM Download PDFInfo
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- CN110212548A CN110212548A CN201910411005.6A CN201910411005A CN110212548A CN 110212548 A CN110212548 A CN 110212548A CN 201910411005 A CN201910411005 A CN 201910411005A CN 110212548 A CN110212548 A CN 110212548A
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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
- H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
- H02J3/1821—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators
- H02J3/1871—Methods for planning installation of shunt reactive power compensators
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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
- Y02E40/10—Flexible AC transmission systems [FACTS]
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Abstract
The invention discloses the configuration methods and device of multi-infeed DC receiving-end system STATCOM, include: that simulation calculation is carried out to multi-infeed DC receiving-end system using preset power system simulation model, obtains Voltage Instability fault set, Voltage Instability fault zone and its voltage stabilization weak spot；The construction condition of each website installing STATCOM of Voltage Instability fault zone is obtained, and determines STATCOM website to be installed and its installable maximum capacity；STATCOM website to be installed is calculated to the support strength index of the voltage of voltage stabilization weak spot；By the support strength index of STATCOM website to be installed by being ranked up from big to small, and using the installable maximum capacity of STATCOM website to be installed as reference conditions, the STATCOM website to be installed of support strength index maximum value is filtered out as installation STATCOM website；Based on the installation STATCOM website, the Voltage Instability fault set is emulated using the power system simulation model, effective method can be provided with constant volume for layouting for multi-infeed DC receiving-end system STATCOM.
Description
Technical field
The present invention relates to technical field of power systems more particularly to the configuration sides of multi-infeed DC receiving-end system STATCOM
Method and device.
Background technique
Currently, with the rapid development of our country's economy, the electricity needs of the load centers such as Yangtze River Delta, Delta of the Pearl River
Continue to increase, to implement country's transferring electricity from the west to the east development strategy, more times high-capacity direct current concentrates feed-in load center, forms more times
The receiving end power grid of direct current concentration feed-in.Multi-infeed DC receiving end power grid has following characteristics: load height is intensive, and power supply accounts for this outside area
Ground power supply ratio is high, and short circuit current level concentrates feed-in close to specified Breaking capacity, multiple-circuit line is switched, and each Inverter Station electrically joins
Fasten close, influence each other outstanding problem between AC network and direct current system.When AC fault occurs for power grid, failure influences intimate
It is transmitted to multiple DC inversion stations fluently, causes direct-flow inverter that commutation failure occurs, needs to inhale in direct current recovery process
Receiving is more than the idle of its rated capacity, so that load center voltage restores difficult, it, may if AC fault cannot be cut off in time
Make multiple-circuit line occur to continue commutation failure, causes load center Voltage Instability and low-voltage off-load risk.
Currently, layouting for STATCOM generally relies on planning and designing personnel's root with constant volume in traditional multi-infeed DC system
According to experience progress Computer Simulation comparison determination, this method larger workload and there are certain exploration blindness, it is unable to get
Not only meet network system demand but also meet the more excellent configuration of live construction condition.
Summary of the invention
The configuration method and device of multi-infeed DC receiving-end system STATCOM provided in an embodiment of the present invention, can effectively solve
Certainly the prior art is unable to get the problem of not only meeting network system demand but also meeting the more excellent configuration of live construction condition.
One embodiment of the invention provides the configuration method of multi-infeed DC receiving-end system STATCOM a kind of, comprising:
Simulation calculation is carried out to the multi-infeed DC receiving-end system using preset power system simulation model, obtains voltage mistake
Steady fault set, Voltage Instability fault zone and its voltage stabilization weak spot；
The construction condition of each website installing STATCOM of the Voltage Instability fault zone is obtained, and determination is to be installed
STATCOM website and its installable maximum capacity；
The STATCOM website to be installed is calculated to the support strength index of the voltage of the voltage stabilization weak spot；
By the support strength index of the STATCOM website to be installed by being ranked up from big to small, and by described wait pacify
The installable maximum capacity of STATCOM website is filled as reference conditions, filter out the support strength index maximum value to
STATCOM website is installed as installation STATCOM website；
Based on the installation STATCOM website, the Voltage Instability fault set is carried out using the power system simulation model
Emulation, when simulation result reaches the stability condition of the multi-infeed DC receiving-end system, obtain the multi-infeed DC by
End system STATCOM layout and its capacity configuration.
As an improvement of the above scheme, as follows to judge whether the simulation result reaches more direct current feedbacks
Enter the stability condition of receiving-end system:
Based on the installation STATCOM website, using the power system simulation model in the Voltage Instability fault set
Institute is faulty successively to carry out analogue simulation, judges whether simulation result reaches the stability item of the multi-infeed DC receiving-end system
Part；If the simulation result be system keep operate normally, then it is assumed that the simulation result reach the multi-infeed DC by
The stability condition of end system；If the simulation result is system failure route, then it is assumed that the simulation result is not up to institute
State the stability condition of multi-infeed DC receiving-end system.
As an improvement of the above scheme, the method also includes the simulation result be not up to the multi-infeed DC by
The step of when stability condition of end system:
When the simulation result is not up to the stability condition of the multi-infeed DC receiving-end system, it is based on the installation
STATCOM website recalculates the STATCOM website to be installed to the support strength of the voltage of the voltage stabilization weak spot
Index, until the simulation result reaches the stability condition of the multi-infeed DC receiving-end system.
As an improvement of the above scheme, described to calculate the STATCOM website to be installed to the voltage stabilization weak spot
Voltage support strength index, specifically include:
Support of the STATCOM website to be installed to the voltage of the voltage stabilization weak spot is calculated according to the following formula
Intensity index:
Wherein, VSFiIt is i-th of STATCOM website to be installed to the support strength of the voltage of the voltage stabilization weak spot
Index, SiFor the capacity of i-th of STATCOM website switching reactive compensation to be installed, Δ ui,jFor i-th of station STATCOM to be installed
Cause the voltage change of j-th of voltage stabilization weak spot, P when point switching reactive compensationjFor j-th voltage stabilization weak spot
Power supply charge；I=1,2 ... M, j=1,2 ... K.
As an improvement of the above scheme, the power system simulation model includes single element failure or composition element failure
Electromechanical transient simulation model.
As an improvement of the above scheme, the single element failure includes that route three-phase shortcircuit jumps this loop line road, route list
Mutually failure phase, one group of transformer fault tripping, one group of generator tripping failure are jumped in short circuit；
The composition element failure include route three-phase shortcircuit jump double-circuit line, in single-phase short circuit switch failure jump it is single with string
The single-phase middle switch failure of phase, three-phase shortcircuit is jumped with string three-phase.
As an improvement of the above scheme, the construction condition of each website installing STATCOM of the Voltage Instability fault zone
Including high voltage bus interval in substation, vacant lot area, expropriation of land range can be expanded.
Another embodiment of the present invention correspondence provides the configuration device of multi-infeed DC receiving-end system STATCOM a kind of, wraps
It includes:
First emulation module, for being imitated using preset power system simulation model the multi-infeed DC receiving-end system
It is true to calculate, obtain Voltage Instability fault set, Voltage Instability fault zone and its voltage stabilization weak spot；
Data acquisition module, each website for obtaining the Voltage Instability fault zone install the construction item of STATCOM
Part, and determine STATCOM website to be installed and its installable maximum capacity；
Computing module, for calculating the STATCOM website to be installed to the branch of the voltage of the voltage stabilization weak spot
Support intensity index；
Screening module, for by the support strength index of the STATCOM website to be installed by being ranked up from big to small,
And using the installable maximum capacity of the STATCOM website to be installed as reference conditions, filters out the support strength and refer to
The STATCOM website to be installed of maximum value is marked as installation STATCOM website；
Second emulation module, for being based on the installation STATCOM website, using the power system simulation model to the electricity
Pressure unstability fault set is emulated, and when simulation result reaches the stability condition of the multi-infeed DC receiving-end system, is obtained
The multi-infeed DC receiving-end system STATCOM layout and its capacity configuration.
Compared with prior art, the configuration method of multi-infeed DC receiving-end system STATCOM disclosed by the embodiments of the present invention
And device, simulation calculation is carried out to the multi-infeed DC receiving-end system by using preset power system simulation model, obtains electricity
Unstability fault set, Voltage Instability fault zone and its voltage stabilization weak spot are pressed, each of the Voltage Instability fault zone is obtained
Website installs the construction condition of STATCOM, and determines STATCOM website to be installed and its installable maximum capacity, calculates institute
STATCOM website to be installed is stated to the support strength index of the voltage of the voltage stabilization weak spot, it will be described to be installed
The support strength index of STATCOM website by being ranked up from big to small, and by the mountable of the STATCOM website to be installed
Maximum capacity as reference conditions, filter out the STATCOM website to be installed of the support strength index maximum value as peace
STATCOM website is filled, the installation STATCOM website is based on, using the power system simulation model to the Voltage Instability failure
Collection is emulated, and when simulation result reaches the stability condition of the multi-infeed DC receiving-end system, obtains more direct currents
Feed-in receiving-end system STATCOM layout and its capacity configuration, can effectively solve the prior art and be unable to get and both meet power grid system
System demand meets the problem of more excellent configuration of live construction condition again, can be the fixed point of multi-infeed DC receiving-end system STATCOM
Effective method is provided with constant volume, the accuracy and efficiency of configuration can be effectively provided, manual operation bring can effectively be avoided to miss
Difference.
Another embodiment of the present invention provides the configuration method and device of a kind of multi-infeed DC receiving-end system STATCOM,
Including processor, memory and stores in the memory and be configured as the computer journey executed by the processor
Sequence, the processor realize multi-infeed DC receiving-end system described in foregoing invention embodiment when executing the computer program
The configuration method of STATCOM.
Another embodiment of the present invention provides a kind of storage medium, the computer readable storage medium includes the meter of storage
Calculation machine program, wherein control equipment where the computer readable storage medium in computer program operation and execute
State the configuration method of multi-infeed DC receiving-end system STATCOM described in inventive embodiments.
Detailed description of the invention
Fig. 1 is a kind of stream of the configuration method for multi-infeed DC receiving-end system STATCOM that one embodiment of the invention provides
Journey schematic diagram；
Fig. 2 is the configuration process schematic diagram for the multi-infeed DC receiving-end system STATCOM that one embodiment of the invention provides；
Fig. 3 is a kind of knot of the configuration device for multi-infeed DC receiving-end system STATCOM that one embodiment of the invention provides
Structure schematic diagram.
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.
It is a kind of configuration method for multi-infeed DC receiving-end system STATCOM that one embodiment of the invention provides referring to Fig. 1
Flow diagram, comprising:
S101, simulation calculation is carried out to the multi-infeed DC receiving-end system using preset power system simulation model, obtained
Voltage Instability fault set, Voltage Instability fault zone and its voltage stabilization weak spot.
Preferably, the power system simulation model includes the electromechanical transient simulation of single element failure or composition element failure
Model.Wherein, the single element failure includes that route three-phase shortcircuit jumps this loop line road, route single-phase short circuit jumps failure phase, one
The tripping of group transformer fault, one group of generator tripping failure；The composition element failure includes that route three-phase shortcircuit jumps double loop
Switch failure is jumped, three-phase shortcircuit single-phase middle switch failure single-phase with string and is jumped with string three-phase in road, single-phase short circuit.
Further, the total quantity of voltage stabilization weak spot described in the present embodiment is K, to each Voltage Instability fault zone
Voltage stabilization weak spot bus number consecutively 1,2 ... ..., K.
S102, each website for obtaining the Voltage Instability fault zone install the construction condition of STATCOM, and determine wait pacify
Fill STATCOM website and its installable maximum capacity.
Preferably, the construction condition of each website installing STATCOM of the Voltage Instability fault zone includes in substation
High voltage bus interval, can expand expropriation of land range at vacant lot area.
It is appreciated that investigating the construction condition of installing STATCOM one by one to each website in Voltage Instability fault zone, determine
The alternative website and its installable maximum capacity of STATCOM to be installed, STATCOM website to be installed described in the present embodiment are total
Quantity is M, number consecutively 1,2 ... ..., M.
S103, the calculating STATCOM website to be installed refer to the support strength of the voltage of the voltage stabilization weak spot
Mark.
Specifically, calculating the STATCOM website to be installed according to the following formula to the electricity of the voltage stabilization weak spot
The support strength index of pressure:
Wherein, VSFiIt is i-th of STATCOM website to be installed to the support strength of the voltage of the voltage stabilization weak spot
Index, SiFor the capacity of i-th of STATCOM website switching reactive compensation to be installed, Δ ui,jFor i-th of station STATCOM to be installed
Cause the voltage change of j-th of voltage stabilization weak spot, P when point switching reactive compensationjFor j-th voltage stabilization weak spot
Power supply charge；I=1,2 ... M, j=1,2 ... K.
It should be noted that at i-th of STATCOM website high voltage bus to be installed switching certain capacity Si idle benefit
It repays, its busbar voltage is made to change, and then obtain the voltage change for causing j-th of voltage stabilization weak spot, to calculate
Support strength index of i-th of STATCOM website to be installed to voltage stabilization weak spot voltage.Wherein, voltage in the present embodiment
Variation is 1% or so.
S104, by the support strength index of the STATCOM website to be installed by being ranked up from big to small, and will be described
The installable maximum capacity of STATCOM website to be installed filters out the support strength index maximum value as reference conditions
STATCOM website to be installed as installation STATCOM website.
It is appreciated that by the support strength index of all not up to STATCOM websites to be installed of its maximum installed capacity
It sorts from large to small, STATCOM is installed in the website bus of support strength index maximum value, it is possible thereby to obtain STATCOM's
It layouts and its constant volume.Preferably, the STATCOM installed is the rated capacity of serializing.
S105, it is based on the installation STATCOM website, using the power system simulation model to the Voltage Instability fault set
It is emulated, when simulation result reaches the stability condition of the multi-infeed DC receiving-end system, obtains more direct current feedbacks
Enter receiving-end system STATCOM layout and its capacity configuration.
Specifically, as follows to judge whether the simulation result reaches the multi-infeed DC receiving-end system
Stability condition:
Based on the installation STATCOM website, using the power system simulation model in the Voltage Instability fault set
Institute is faulty successively to carry out analogue simulation, judges whether simulation result reaches the stability item of the multi-infeed DC receiving-end system
Part；If the simulation result be system keep operate normally, then it is assumed that the simulation result reach the multi-infeed DC by
The stability condition of end system；If the simulation result is system failure route, then it is assumed that the simulation result is not up to institute
State the stability condition of multi-infeed DC receiving-end system.
Preferably, the stability condition can be guiding rules of power system safety and stability, and it is steady to be also possible to preset system
Determine level value.
Optionally, it when the simulation result is not up to the stability condition of the multi-infeed DC receiving-end system, is based on
The installation STATCOM website recalculates the STATCOM website to be installed to the voltage of the voltage stabilization weak spot
Support strength index, until the simulation result reaches the stability condition of the multi-infeed DC receiving-end system.
Optionally, it when simulation result reaches the stability condition of the multi-infeed DC receiving-end system, obtains described more
Direct current feed-in receiving-end system STATCOM layout and its capacity configuration.
It referring to fig. 2, is the configuration process signal for the multi-infeed DC receiving-end system STATCOM that one embodiment of the invention provides
Figure.It after configuring starting, executes in step S101 and multilayer output feedback network is carried out to power grid region-of-interest, and then determine Voltage Instability event
Barrier collection, Voltage Instability fault zone and its voltage stabilization weak spot.Further, it executes and investigates Voltage Instability failure in step S102
Each website and determining STATCOM website to be installed and installable maximum capacity, then execute and calculate in step S103 in region
The support strength index of the voltage of the STATCOM website to be installed.In turn, execute step S104 in support strength index most
The STATCOM website bus to be installed installation STATCOM being worth greatly, executes step S105 afterwards and stablizes to Voltage Instability fault set
Emulation.To judge whether simulation result meets preset stability condition；If so, terminate configuration, output installation
Layout position and the installed capacity of STATCOM；If it is not, returning to the branch for recalculating the voltage of the STATCOM website to be installed
Support intensity index, after again using the website bus installation STATCOM of the support strength index maximum value that is currently calculated, into
And stability simulation is carried out to Voltage Instability fault set again, until simulation result meets preset stability condition.
The configuration method of multi-infeed DC receiving-end system STATCOM provided in an embodiment of the present invention, by using preset
Power system simulation model carries out simulation calculation to the multi-infeed DC receiving-end system, obtains Voltage Instability fault set, Voltage Instability
Fault zone and its voltage stabilization weak spot obtain the construction of each website installing STATCOM of the Voltage Instability fault zone
Condition, and determine STATCOM website to be installed and its installable maximum capacity, calculate the STATCOM website pair to be installed
The support strength index of the voltage of the voltage stabilization weak spot, by the support strength index of the STATCOM website to be installed
By being ranked up from big to small, and using the installable maximum capacity of the STATCOM website to be installed as reference conditions, sieve
The STATCOM website to be installed of the support strength index maximum value is selected as installation STATCOM website, is based on the installation
STATCOM website emulates the Voltage Instability fault set using the power system simulation model, reaches institute in simulation result
When stating the stability condition of multi-infeed DC receiving-end system, obtain the multi-infeed DC receiving-end system STATCOM layout and
Its capacity configuration, can effectively solve the prior art be unable to get not only meet network system demand but also meet live construction condition compared with
The problem of excellent configuration, can provide effective method for the fixed point and constant volume of multi-infeed DC receiving-end system STATCOM, can effectively mention
For the accuracy and efficiency of configuration, manual operation bring error can be effectively avoided.
In another preferred embodiment, on the basis of the above embodiments, by above-mentioned multi-infeed DC receiving-end system
The configuration method of STATCOM is applied in actual electric network.It includes 2 DC inversion stations, 11 that the power grid is arranged in the present embodiment
500kV exchange plant stand exchanges plant stand, 28 go back tos alternating current circuits 500kV and about 200 go back tos alternating current circuits 220kV with 85 220kV.
According to step S101, using electromechanical transient simulation program to the alternating current circuit 220kV and 500kV of the power grid, 220kV
Plant stand is exchanged with 500kV carries out transient stability simulation calculation.Wherein, the failure of setting include: three-phase shortcircuit jump this loop line road,
The one group of transformer fault tripping of 500kV plant stand.In turn, simulation calculation obtains 3 backcrossing Flow Lines generation three-phase shortcircuit and jumps this loop line
Road causes system Voltage Instability occur, is 3 times alternating current circuits 500kV of 500kV website A outlet.Therefore, Voltage Instability failure
Integrate and jump this loop line road as three-phase shortcircuit, faulty line is handed over for 500kV website A to website B AC line, 500kV website A to website C
Streamline, 500kV website A to website D AC line；Voltage Instability fault zone is 500kV website A and its linchpin belongs to 7 220kV exchanges
Plant stand；The voltage stabilization weak spot of Voltage Instability fault zone be 500kV website A, 220kV website A1,220kV website A2,
220kV website A3.
Further, to voltage stabilization weak spot bus number consecutively such as the following table 1 of Voltage Instability fault zone:
| Site name | 500kV website A | 220kV website A1 | 220kV website A1 | 220kV website A1 |
| Number | 1 | 2 | 3 | 4 |
According to step S102,500kV website A to Voltage Instability fault zone and its linchpin belong to 7 220kV exchange plant stands by
The construction condition of one investigation installing STATCOM, obtains STATCOM website to be installed and its installable maximum capacity such as the following table 2:
| Number | Site name | Mountable maximum capacity |
| 1 | 500kV website A | 100MVar |
| 2 | 220kV website A1 | 0Mvar |
| 3 | 220kV website A2 | 20Mvar |
| 4 | 220kV website A3 | 20Mvar |
| 5 | 220kV website A4 | 50Mvar |
| 6 | 220kV website A5 | 20Mvar |
| 7 | 220kV website A6 | 0Mvar |
| 8 | 220kV website A7 | 0Mvar |
According to step S103, in i-th STATCOM website to be installed (i=1,2 ... 8) high voltage bus at switching one constant volumes
The reactive compensation for measuring Si makes its busbar voltage change 1% or so, obtains the voltage change of each voltage stabilization weak spot bus,
Wherein, the voltage stabilization weak spot be j=1,2 ... 4.According to formulaCalculate i-th it is to be installed
Support strength index of the STATCOM website to the voltage of j-th of voltage stabilization weak spot.
In turn, calculated result such as the following table 3 is obtained:
According to step S104, the support strength of the STATCOM website to be installed of all not up to maximum installed capacities is referred to
Mark sorts from large to small.Shown in table 3 as above, 1 site support intensity index of number is maximum, therefore preferentially layouts in 1 website of number,
That is 500kV website A, and installed capacity is 100MVar STATCOM.
According to step S105, transient emulation calculating is carried out to Voltage Instability fault set using electromechanical transient simulation program, is obtained
To simulation result be there is " 500kV website A to website B AC line " three-phase shortcircuit jumps this loop line road that system voltage is caused to lose
Surely.Since there are still single element failures to lead to system voltage unstability, not up to preset stability condition is needed on this basis
Continue to calculate support strength index, while updating mountable maximum capacity, according to formula(i=1,2 ...
8, j=1,2 ... 4) calculated result such as the following table 4:
| Number | Site name | Mountable maximum capacity | VSF2 |
| 1 | 500kV website A | 0MVar | 0.219 |
| 2 | 220kV website A1 | 0Mvar | 0.147 |
| 3 | 220kV website A2 | 20Mvar | 0.135 |
| 4 | 220kV website A3 | 20Mvar | 0.161 |
| 5 | 220kV website A4 | 50Mvar | 0.104 |
| 6 | 220kV website A5 | 20Mvar | 0.120 |
| 7 | 220kV website A6 | 0Mvar | 0.125 |
| 8 | 220kV website A7 | 0Mvar | 0.094 |
By in table 4, by the support strength index of the STATCOM websites to be installed of all not up to maximum installed capacities from big
To small sequence, in all websites of the mountable maximum capacity greater than 0,4 site support intensity index of number is maximum.Therefore, excellent
It first layouts in 4 website of number, i.e. 220kV website A3, and installed capacity is 20MVar STATCOM.
Further, transient emulation calculating is carried out to Voltage Instability fault set using electromechanical transient simulation program again, led to
Cross in Voltage Instability fault set institute it is faulty successively simulate, obtained simulation result be system be able to maintain stable operation.
Therefore, power grid STATCOM layouts and capacity configuration such as the following table 5 under the method for operation:
| Number | Site name | STATCOM capacity |
| 1 | 500kV website A | 100MVar |
| 2 | 220kV website A3 | 20Mvar |
It is a kind of configuration device for multi-infeed DC receiving-end system STATCOM that one embodiment of the invention provides referring to Fig. 3
Structural schematic diagram.
First emulation module 301, for using preset power system simulation model to the multi-infeed DC receiving-end system into
Row simulation calculation obtains Voltage Instability fault set, Voltage Instability fault zone and its voltage stabilization weak spot；
Data acquisition module 302, each website for obtaining the Voltage Instability fault zone install the construction of STATCOM
Condition, and determine STATCOM website to be installed and its installable maximum capacity；
Computing module 303, for calculating the STATCOM website to be installed to the voltage of the voltage stabilization weak spot
Support strength index；
Screening module 304, for by the support strength index of the STATCOM website to be installed by arranging from big to small
Sequence, and using the installable maximum capacity of the STATCOM website to be installed as reference conditions, filter out the support strength
The STATCOM website to be installed of index maximum value is as installation STATCOM website；
Second emulation module 305, for being based on the installation STATCOM website, using the power system simulation model to institute
Voltage Instability fault set is stated to be emulated, when simulation result reaches the stability condition of the multi-infeed DC receiving-end system,
Obtain the multi-infeed DC receiving-end system STATCOM layout and its capacity configuration.
Preferably, second emulation module 305 includes:
Judging unit loses the voltage using the power system simulation model for being based on the installation STATCOM website
Institute in steady fault set is faulty successively to carry out analogue simulation, judges whether simulation result reaches multi-infeed DC receiving end system
The stability condition of system；If the simulation result is that system keeps operating normally, then it is assumed that the simulation result reaches described
The stability condition of multi-infeed DC receiving-end system；If the simulation result is system failure route, then it is assumed that the emulation
As a result it is not up to the stability condition of the multi-infeed DC receiving-end system.
Preferably, second emulation module 305 further include:
Cycling element, for being not up to the stability condition of the multi-infeed DC receiving-end system in the simulation result
When, it is based on the installation STATCOM website, recalculates the STATCOM website to be installed to the voltage stabilization weak spot
Voltage support strength index, until the simulation result reaches the stability condition of the multi-infeed DC receiving-end system.
Preferably, the computing module 303 includes:
Support strength indicator calculating unit, for calculating the STATCOM website to be installed according to the following formula to described
The support strength index of the voltage of voltage stabilization weak spot:
Wherein, VSFiIt is i-th of STATCOM website to be installed to the support strength of the voltage of the voltage stabilization weak spot
Index, SiFor the capacity of i-th of STATCOM website switching reactive compensation to be installed, Δ ui,jFor i-th of station STATCOM to be installed
Cause the voltage change of j-th of voltage stabilization weak spot, P when point switching reactive compensationjFor j-th voltage stabilization weak spot
Power supply charge；I=1,2 ... M, j=1,2 ... K.
Preferably, first emulation module 301 includes:
Modeling unit, for the power system simulation model include the electromechanics of single element failure or composition element failure temporarily
State simulation model.
Preferably, first emulation module 301 further include:
Single element fault setting unit, for the single element failure include route three-phase shortcircuit jump this loop line road,
Route single-phase short circuit jumps failure phase, one group of transformer fault tripping, one group of generator tripping failure；
Composition element fault setting unit, for the composition element failure include route three-phase shortcircuit jump double-circuit line,
Switch failure is jumped, three-phase shortcircuit single-phase middle switch failure single-phase with string and is jumped with string three-phase in single-phase short circuit.
Preferably, the data acquisition module 302 includes:
Construction condition setting unit, the construction item of each website installing STATCOM for the Voltage Instability fault zone
Part includes high voltage bus interval in substation, vacant lot area, can expand expropriation of land range.
It is a kind of configuration device for multi-infeed DC receiving-end system STATCOM that one embodiment of the invention provides referring to Fig. 3
Structural schematic diagram.The configuration device of the multi-infeed DC receiving-end system STATCOM of the embodiment includes: processor, memory
And store the computer program that can be run in the memory and on the processor.The processor executes the meter
The step in the configuration method embodiment of above-mentioned each multi-infeed DC receiving-end system STATCOM is realized when calculation machine program, such as
Step S103 shown in FIG. 1, to calculate the STATCOM website to be installed strong to the support of the voltage of the voltage stabilization weak spot
Spend index.Alternatively, the processor realizes each module/unit in above-mentioned each Installation practice when executing the computer program
Function, such as computing module 303, for calculating the STATCOM website to be installed to the voltage of the voltage stabilization weak spot
Support strength index.
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 configuration device of the multi-infeed DC receiving-end system STATCOM.
The configuration device of the multi-infeed DC receiving-end system STATCOM can be desktop PC, notebook, palm
Computer and cloud server etc. calculate equipment.The configuration device of the multi-infeed DC receiving-end system STATCOM 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 multi-infeed DC receiving end system
The example of the configuration device of system STATCOM, does not constitute the limit of the configuration device to multi-infeed DC receiving-end system STATCOM
It is fixed, it may include perhaps combining certain components or different components, such as described more than illustrating more or fewer components
The configuration device of direct current feed-in receiving-end system STATCOM 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 configuration device of the multi-infeed DC receiving-end system STATCOM, utilizes various interfaces
With the various pieces of the configuration device of the entire multi-infeed DC receiving-end system STATCOM of 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
The various functions of the configuration device of multi-infeed DC receiving-end system STATCOM.The memory can mainly include storing program area
The storage data area and, wherein storing program area can (such as the sound of application program needed for storage program area, at least one function
Sound playing function, image player function etc.) etc.；Storage data area can store according to mobile phone use created data (such as
Audio data, phone directory etc.) etc..In addition, memory may include high-speed random access memory, it can also include non-volatile
Memory, 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.
Wherein, if the integrated module/unit of the configuration device of the multi-infeed DC receiving-end system STATCOM is with software
The form of functional unit is realized and when sold or used as an independent product, can store in a computer-readable storage
In medium.Based on this understanding, the present invention realizes all or part of the process in above-described embodiment method, can also pass through meter
Calculation machine program is completed to instruct relevant hardware, and the computer program can be stored in a computer readable storage medium
In, the computer program is when being executed by processor, it can be achieved that the step of above-mentioned each embodiment of the method.Wherein, the calculating
Machine program includes computer program code, and the computer program code can be source code form, object identification code form, can hold
Style of writing part or certain intermediate forms etc..The computer-readable medium may include: that can carry the computer program code
Any entity or device, recording medium, USB flash disk, mobile hard disk, magnetic disk, CD, computer storage, read-only memory (ROM,
Read-Only Memory), random access memory (RAM, Random Access Memory), electric carrier signal, telecommunications letter
Number and software distribution medium etc..It should be noted that the content that the computer-readable medium includes can be managed according to the administration of justice
Local legislation and the requirement of patent practice carry out increase and decrease appropriate, such as in certain jurisdictions, according to legislation and patent
Practice, computer-readable medium does not include electric carrier signal and telecommunication signal.
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.
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 configuration method of multi-infeed DC receiving-end system STATCOM characterized by comprising
Simulation calculation is carried out to the multi-infeed DC receiving-end system using preset power system simulation model, obtains Voltage Instability event
Barrier collection, Voltage Instability fault zone and its voltage stabilization weak spot；
The construction condition of each website installing STATCOM of the Voltage Instability fault zone is obtained, and determines STATCOM to be installed
Website and its installable maximum capacity；
The STATCOM website to be installed is calculated to the support strength index of the voltage of the voltage stabilization weak spot；
By the support strength index of the STATCOM website to be installed by being ranked up from big to small, and will be described to be installed
The installable maximum capacity of STATCOM website as reference conditions, filter out the support strength index maximum value wait pacify
STATCOM website is filled as installation STATCOM website；
Based on the installation STATCOM website, the Voltage Instability fault set is emulated using the power system simulation model,
When simulation result reaches the stability condition of the multi-infeed DC receiving-end system, the multi-infeed DC receiving-end system is obtained
STATCOM layout and its capacity configuration.
2. the configuration method of multi-infeed DC receiving-end system STATCOM as described in claim 1, which is characterized in that by such as
Lower step is to judge whether the simulation result reaches the stability condition of the multi-infeed DC receiving-end system:
Based on the installation STATCOM website, using the power system simulation model to all in the Voltage Instability fault set
Failure successively carries out analogue simulation, judges whether simulation result reaches the stability condition of the multi-infeed DC receiving-end system；
If the simulation result is that system keeps operating normally, then it is assumed that the simulation result reaches multi-infeed DC receiving end system
The stability condition of system；If the simulation result is system failure route, then it is assumed that the simulation result is not up to described more
The stability condition of direct current feed-in receiving-end system.
3. the configuration method of multi-infeed DC receiving-end system STATCOM as claimed in claim 2, which is characterized in that the side
Method further includes the steps that when the simulation result is not up to the stability condition of the multi-infeed DC receiving-end system:
When the simulation result is not up to the stability condition of the multi-infeed DC receiving-end system, it is based on the installation
STATCOM website recalculates the STATCOM website to be installed to the support strength of the voltage of the voltage stabilization weak spot
Index, until the simulation result reaches the stability condition of the multi-infeed DC receiving-end system.
4. the configuration method of multi-infeed DC receiving-end system STATCOM as described in claim 1, which is characterized in that the meter
The STATCOM website to be installed is calculated to the support strength index of the voltage of the voltage stabilization weak spot, is specifically included:
The STATCOM website to be installed is calculated to the support strength of the voltage of the voltage stabilization weak spot according to formula (1)
Index:
Wherein, VSFiIt is i-th of STATCOM website to be installed to the support strength index of the voltage of the voltage stabilization weak spot,
SiFor the capacity of i-th of STATCOM website switching reactive compensation to be installed, Δ ui,jIt is thrown for i-th of STATCOM website to be installed
Cut the voltage change for causing j-th of voltage stabilization weak spot when reactive compensation, PjFor the power supply of j-th of voltage stabilization weak spot
Charge；I=1,2 ... M, j=1,2 ... K.
5. the configuration method of multi-infeed DC receiving-end system STATCOM as described in claim 1, which is characterized in that the electricity
Network simulation model includes the electromechanical transient simulation model of single element failure or composition element failure.
6. the configuration method of multi-infeed DC receiving-end system STATCOM as claimed in claim 5, which is characterized in that the list
One element fault include route three-phase shortcircuit jumps this loop line road, route single-phase short circuit jumps failure phase, the tripping of one group of transformer fault,
One group of generator tripping failure；
The composition element failure include route three-phase shortcircuit jump double-circuit line, in single-phase short circuit switch failure jump with go here and there it is single-phase,
The single-phase middle switch failure of three-phase shortcircuit is jumped with string three-phase.
7. the configuration method of multi-infeed DC receiving-end system STATCOM as described in claim 1, which is characterized in that the electricity
Pressure unstability fault zone each website installing STATCOM construction condition include high voltage bus interval in substation, vacant lot area,
Expropriation of land range can be expanded.
8. a kind of configuration device of multi-infeed DC receiving-end system STATCOM characterized by comprising
First emulation module, by being carried out based on emulation using preset power system simulation model to the multi-infeed DC receiving-end system
It calculates, obtains Voltage Instability fault set, Voltage Instability fault zone and its voltage stabilization weak spot；
Data acquisition module, each website for obtaining the Voltage Instability fault zone install the construction condition of STATCOM, and
Determine STATCOM website to be installed and its installable maximum capacity；
Computing module is strong to the support of the voltage of the voltage stabilization weak spot for calculating the STATCOM website to be installed
Spend index；
Screening module, for by the support strength index of the STATCOM website to be installed by being ranked up from big to small, and will
The installable maximum capacity of the STATCOM website to be installed filters out the support strength index most as reference conditions
The STATCOM website to be installed being worth greatly is as installation STATCOM website；
Second emulation module loses the voltage using the power system simulation model for being based on the installation STATCOM website
Steady fault set is emulated, and when simulation result reaches the stability condition of the multi-infeed DC receiving-end system, is obtained described
Multi-infeed DC receiving-end system STATCOM layout and its capacity configuration.
9. a kind of configuration device of multi-infeed DC receiving-end system STATCOM, including processor, memory and it is stored in described
In memory and it is configured as the computer program executed by the processor, when the processor executes the computer program
Realize the configuration method of multi-infeed DC receiving-end system STATCOM as claimed in any of claims 1 to 7 in one of claims.
10. a kind of computer readable storage medium, which is characterized in that the computer readable storage medium includes the calculating of storage
Machine program, wherein equipment where controlling the computer readable storage medium in computer program operation is executed as weighed
Benefit require any one of 1 to 7 described in multi-infeed DC receiving-end system STATCOM configuration method.
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