CN107342630A - A kind of phase modifier emergency control method and system for suppressing the continuous commutation failure of direct current - Google Patents
A kind of phase modifier emergency control method and system for suppressing the continuous commutation failure of direct current Download PDFInfo
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- CN107342630A CN107342630A CN201710643171.XA CN201710643171A CN107342630A CN 107342630 A CN107342630 A CN 107342630A CN 201710643171 A CN201710643171 A CN 201710643171A CN 107342630 A CN107342630 A CN 107342630A
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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
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
- H02J13/00019—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using optical means
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
- Y04S10/52—Outage or fault management, e.g. fault detection or location
Abstract
The invention discloses a kind of phase modifier emergency control method and system for suppressing the continuous commutation failure of direct current, belong to Power System and its Automation technical field.The method of the invention includes step：Direct-current commutation failure information substation sends direct-current commutation failure information to emergent control main website；Emergent control main website obtains all phase modifier operation informations in the DC inversion station busbar voltage information that commutation failure occurs and net；Emergent control main website matches suitable emergent control measure from control scheme list, is sent to phase modifier control and performs station；Phase modifier control performs station and instructed to phase modifier excitation system transmission modification excitation reference voltage instruction and duration, completes phase modifier emergent control.The present invention participates in power network emergent control using phase modifier, can effectively reduce the continuous commutation failure probability of multi-infeed DC receiving end power network direct current, and prevention direct current is advantageous to large-area power-cuts caused by defending more direct current lockings because multiple commutation failure causes locking.
Description
Technical field
The invention belongs to Power System and its Automation technical field, more precisely, suppresses straight the present invention relates to one kind
Flow the phase modifier emergency control method and system of continuous commutation failure.
Background technology
With the fast development of extra-high voltage direct-current, to realize that a wide range of distribute rationally of china natural resources has played important work
With.But the transitional period is built in extra-high voltage grid, power network " tetanic weak friendship " characteristic is obvious, and system safety operation faces greater risk.
Under the intensive feed-in new frame of more direct currents, receive external electric power degree of dependence and improve constantly, as economic development enters new normality,
Under the slow background of load growth, extra-high voltage direct-current receiving end power network local unit is largely closed down, and system dynamic reactive-load deposit is big
Width reduces, and the conventional AC fault of power network often leads to multiple-circuit line commutation failure simultaneously, is possibly even caused under serious conditions
Multiple-circuit line locking simultaneously, these factors cause locally to lose load or large-area power-cuts caused by spread of voltage or collapse of voltage
The trend increased is presented in accident.
In order to improve the dynamic reactive deposit of power network, strengthen the voltage stabilization characteristic of power network, prevent or avoid multiple-circuit line
Commutation failure, the situation of locking occur simultaneously, and China largely builds synchronous capacitor in extra-high voltage direct-current receiving end power network.Phase modifier
The idle output of itself is adjusted according to the change of set end voltage during normal operation, the dynamic reactive storage of system can be effectively improved
It is standby.Substantial amounts of simulation analysis show, after phase modifier puts into operation, it is general that multi-infeed DC receiving end power network direct-current commutation failure can be greatly reduced
Rate, but the spontaneous response of phase modifier is only relied on, the continuous commutation failure of more direct currents, phase modifier can not be still avoided after catastrophe failure
Dynamic reactive enabling capabilities be not fully utilized, it is necessary to phase modifier participate in power grid control the method for operation explore.
The content of the invention
The present invention seeks to：In order to reduce the probability of the continuous commutation failure of direct current, avoid direct current because of continuous commutation failure and
Locking, endanger power network safety operation, propose a kind of phase modifier emergency control method for suppressing the continuous commutation failure of direct current and
System.
Specifically, the present invention is realized using following technical scheme, a kind of tune for suppressing the continuous commutation failure of direct current
Camera emergency control method, comprises the following steps：
1) by the use of the substation in grid control system as direct-current commutation failure information substation, DC control protection system is received
The direct-current commutation failure information that system is sent, when commutation failure occurs for direct current, direct current is changed by direct-current commutation failure information substation
Phase failure information is sent to the emergent control main website of grid control system；
2) after emergent control main website receives direct-current commutation failure information, the DC inversion station bus that commutation failure occurs is obtained
All phase modifier operation informations in voltage and power network；
3) emergent control main website is according to direct-current commutation failure information and DC inversion station busbar voltage information, and integrates phase modulation
Machine operation information, suitable emergent control measure is matched from control scheme list, be sent to phase modifier control and perform station；
4) phase modifier control performs station and sends the instruction of modification excitation reference voltage and duration to phase modifier excitation system
Instruction, when the duration terminate after or triggering excitation system cross encourage protection limitation when, excitation reference voltage is reverted into initial value,
Complete phase modifier emergent control.
Above-mentioned technical proposal is further characterized by, the phase modifier operation information, including phase modifier puts into operation and stopped
Fortune information and phase modifier whether the defervescence after encourage by force.
Above-mentioned technical proposal is further characterized by, and control scheme list is according to offline time-domain-simulation meter in the step 3)
Calculate or online time-domain-simulation is calculated and formulated, control scheme list information should be included in the direct current of each configuration commutation failure emergent control
When DC inversion station busbar voltage is different value, corresponding emergency adjustment configuring direct current commutation is lost in the case of generation commutation failure
Lose excitation system reference voltage target value and the duration of the phase modifier of emergent control.
Above-mentioned technical proposal is further characterized by, and the offline time-domain-simulation calculates, based on network load peak and
All direct current Operation at full power typical ways are carried out, and formulate fixed Off-line control Policy Table；The online time-domain-simulation calculates,
According to power network real time operation mode, rolling calculation is carried out, and refresh to form On-line Control strategy in real time according to simulation result
Table；When not possessing online computing function or online time-domain-simulation computing function is unavailable, obtained using offline time-domain-simulation
Control scheme list performs control strategy；When the strategy of on-line table refreshed in real time be present, control strategy is performed by strategy of on-line table.
Accordingly, the present invention also provides a kind of phase modifier emergency control system for suppressing the continuous commutation failure of direct current, and it is special
Sign is, including performs station including the control of emergent control main website, direct-current commutation failure information substation and phase modifier, wherein,
The emergent control main website is used for the direct-current commutation failure information for receiving the transmission of direct-current commutation failure information substation, obtains
Each DC converter station busbar voltage information, each phase modifier operation information are taken, is controlled according to control scheme list to corresponding phase modifier
Perform station and issue the instruction of modification phase modifier excitation reference voltage and duration instruction；
The direct-current commutation failure information substation is used to receive the direct-current commutation failure letter that DC control and protection system is sent
Breath, and send that information to emergent control main website；
The phase modifier control performs station and is used to obtain each phase modifier operation information, and will give emergent control in the information
Main website, the instruction of modification phase modifier excitation reference voltage and duration instruction that emergent control main website issues are received, and this is believed
Breath is sent to phase modifier exciter control system, performs phase modifier emergent control.
Beneficial effects of the present invention are as follows：The present invention has direct current commutation after detecting that commutation failure failure occurs for direct current
Warning information is sent to emergent control main website by failure information substation, and the direct current that emergent control main website obtains generation commutation failure is inverse
Become all phase modifier operation informations in station busbar voltage information and net；Emergent control main website is suitable tight from control scheme list matching
Anxious control measure, it is sent to phase modifier control and performs station；Phase modifier control performs station and encouraged to the transmission modification of phase modifier excitation system
Magnetic reference voltage instructs and duration instruction, completes phase modifier emergent control.The present invention is urgent using phase modifier participation power network
Control, the continuous commutation failure probability of multi-infeed DC receiving end power network direct current can be effectively reduced, prevention direct current is because of multiple commutation failure
Generation locking failure, be advantageous to large-area power-cuts caused by defending more direct current lockings.
Brief description of the drawings
Fig. 1 is a kind of flow chart for the phase modifier emergency control method for suppressing the continuous commutation failure of direct current of the present invention.
Fig. 2 is a kind of structured flowchart for the phase modifier emergency control system for suppressing the continuous commutation failure of direct current of the present invention.
Embodiment
The present invention is described in further detail in conjunction with the embodiments with reference to the accompanying drawings.
Embodiment 1：
The present embodiment proposes a kind of phase modifier emergency control method and system for suppressing the continuous commutation failure of direct current.This reality
Apply example and make use of Dynamic partitioning techniques.The so-called phase modifier emergent control for suppressing the continuous commutation failure of direct current refers to that grid disturbance is led
After causing direct current that commutation failure failure occurs, promptly encouraged by force using phase modifier and provide reactive power support in DC converter station near region, reduced
The probability of commutation failure subsequently occurs for direct current, avoids direct current locking because of continuous commutation failure, vast power loss is caused to power network.
The present embodiment suppression the continuous commutation failure of direct current phase modifier emergency control system block diagram as shown in Fig. 2 including
Emergent control main website, direct-current commutation failure information substation and phase modifier control perform station.
The effect of direct-current commutation failure information substation is to receive the direct-current commutation failure letter that DC control and protection system is sent
Breath, and send that information to emergent control main website.Believe using the substation in grid control system as direct-current commutation failure
Cease substation.When direct-current commutation failure failure occurs for power network, direct-current commutation failure information substation can pass through the height based on optical fiber
Speed digital communication network sends direct-current commutation failure warning information to the emergent control main website in grid control system.Wherein, institute
1Mbps should be not less than by stating the transmittability of high-speed digital communication network, to enable the direct-current commutation failure warning information
Reach quick and stably send to emergent control main website.
Emergent control main website in grid control system, it is the straight of reception direct-current commutation failure information substation transmission that it, which is acted on,
Flow commutation failure information, obtain each DC converter station busbar voltage information, each phase modifier operation information, according to control scheme list to
Corresponding phase modifier control performs station and issues the instruction of modification phase modifier excitation reference voltage and duration instruction.
DC converter station busbar voltage information is by WAMS (Wide Area Measurement System, wide area monitoring system
System) system acquisition.Emergent control main website and major network regulation and control center WAMS systems are used with source at a pair of, described are changed with conveniently recognized
The collection moment of stream station busbar voltage.
Control scheme list cocoa is calculated according to offline or online time-domain-simulation and formulated, and control scheme list information should be included in often
In the case of the direct current generation commutation failure of individual configuration commutation failure emergent control when DC inversion station busbar voltage is different value
The excitation system reference voltage target value of the phase modifier of corresponding emergency adjustment configuring direct current commutation failure emergent control and continue
Time.Offline time-domain-simulation, which calculates, is typically based on network load peak and the development of all direct current Operation at full power typical ways, system
Surely fixed Off-line control Policy Table；Online time-domain-simulation is calculated then according to power network real time operation mode, using regulating and controlling center
Online aid decision-making system, rolling calculation is carried out, and refresh to form On-line Control Policy Table in real time according to simulation result.When
When not possessing online computing function or unavailable online time-domain-simulation computing function, the control plan of offline time-domain-simulation acquisition is utilized
Sketch form performs control strategy.When the strategy of on-line table refreshed in real time be present, control strategy is performed by strategy of on-line table.
Phase modifier operation information includes the putting into operation of phase modifier, stop information, phase modifier whether the defervescence after encouraging by force,
Controlled by phase modifier and perform station by the high-speed digital communication network transmission direct-current commutation failure warning information based on optical fiber to tight
Anxious control main website.Wherein, the transmittability of the high-speed digital communication network should be not less than 1Mbps, to cause the phase modulation
Machine operation information can quickly and be stably sent to emergent control main website.
Phase modifier control performs station and is used to obtain each phase modifier operation information, and emergent control master will be given in the information
Stand, and the modification phase modifier excitation issued by the high-speed digital communication network reception emergent control main website based on optical fiber is with reference to electricity
Pressure instruction and duration instruction, send that information to phase modifier exciter control system, perform phase modifier emergent control.Its
In, the transmittability of the high-speed digital communication network should be not less than 1Mbps, to enable the phase modifier operation information
Send quickly and stably to emergent control main website.
The implementation process of the present embodiment is as shown in figure 1, i.e. direct-current commutation failure information substation sends direct-current commutation failure letter
Cease emergent control main website；Emergent control main website obtains institute in the DC inversion station busbar voltage information that commutation failure occurs and net
There is phase modifier operation information；Emergent control main website matches suitable emergent control measure from control scheme list, is sent to phase modifier
Control performs station；Phase modifier control performs station and sends the instruction of modification excitation reference voltage and duration to phase modifier excitation system
Instruction, complete phase modifier emergent control.The detailed process of the present embodiment is described in further detail below.
Step 1 is described when commutation failure occurs for direct current, by direct-current commutation failure information substation from direct current control in Fig. 1
Protection system processed receives direct-current commutation failure information, and sends it to emergent control main website.
After step 2 describes the above-mentioned commutation failure information of emergent control main website reception in Fig. 1, obtain and commutation failure occurs
DC inversion station busbar voltage, obtain power network in all phase modifier operation informations, wherein, the phase modifier in stoppage in transit does not have
Standby to encourage ability by force, the phase modifier in defervescence does not possess encourages ability by force；DC inversion station busbar voltage information can pass through power network
In WAMS (Wide Area Measurement System, wide-area monitoring systems) system obtain.
Step 3 describes emergent control main website according to direct-current commutation failure information and DC inversion station bus electricity in Fig. 1
Information, and comprehensive phase modifier operation information are pressed, suitable emergent control measure is matched from control scheme list, is sent to phase modifier control
System performs station.
Step 4, which describes to be controlled by phase modifier, in Fig. 1 performs station to the transmission modification excitation reference of phase modifier excitation system
Voltage instruction and the duration instruction, when the duration terminate after or triggering excitation system cross encourage protection limitation when, excitation is joined
Examine voltage and revert to initial value, complete phase modifier emergent control, terminate this method.
Although the present invention is disclosed as above with preferred embodiment, embodiment is not for limiting the present invention's.Not
In the spirit and scope for departing from the present invention, any equivalence changes done or retouching, the protection domain of the present invention is also belonged to.Cause
This protection scope of the present invention should be using the content that claims hereof is defined as standard.
Claims (5)
1. a kind of phase modifier emergency control method for suppressing the continuous commutation failure of direct current, it is characterised in that comprise the following steps：
1）By the use of the substation in grid control system as direct-current commutation failure information substation, DC control and protection system hair is received
The direct-current commutation failure information gone out, when commutation failure occurs for direct current, direct current commutation is lost by direct-current commutation failure information substation
Lose the emergent control main website that information is sent to grid control system；
2）After emergent control main website receives direct-current commutation failure information, the DC inversion station busbar voltage that commutation failure occurs is obtained
And all phase modifier operation informations in power network；
3）Emergent control main website is according to direct-current commutation failure information and DC inversion station busbar voltage information, and comprehensive phase modifier is transported
Row information, suitable emergent control measure is matched from control scheme list, be sent to phase modifier control and perform station；
4）Phase modifier control performs station and instructed to phase modifier excitation system transmission modification excitation reference voltage instruction and duration,
When the duration terminate after or triggering excitation system cross encourage protection limitation when, excitation reference voltage is reverted into initial value, complete
Phase modifier emergent control.
2. the phase modifier emergency control method according to claim 1 for suppressing the continuous commutation failure of direct current, it is characterised in that
The phase modifier operation information, including phase modifier put into operation and stop information and phase modifier whether the defervescence after encouraging by force.
3. the phase modifier emergency control method according to claim 1 for suppressing the continuous commutation failure of direct current, it is characterised in that
The step 3）Middle control scheme list is calculated according to offline time-domain-simulation or online time-domain-simulation is calculated and formulated, control scheme list letter
Breath should be included in the case of the direct current generation commutation failure of each configuration commutation failure emergent control when DC inversion station bus electricity
Press for different value when corresponding emergency adjustment configuring direct current commutation failure emergent control phase modifier excitation system reference voltage
Desired value and duration.
4. the phase modifier emergency control method according to claim 3 for suppressing the continuous commutation failure of direct current, it is characterised in that
The offline time-domain-simulation calculates, and is carried out based on network load peak and all direct current Operation at full power typical ways, formulates solid
Fixed Off-line control Policy Table；The online time-domain-simulation calculates, and according to power network real time operation mode, carries out rolling calculation, and
Refresh to form On-line Control Policy Table in real time according to simulation result；When not possessing online computing function or online time-domain-simulation
When computing function is unavailable, the control scheme list obtained using offline time-domain-simulation performs control strategy；Refresh in real time when existing
Strategy of on-line table when, by strategy of on-line table perform control strategy.
5. a kind of phase modifier emergency control system for suppressing the continuous commutation failure of direct current, it is characterised in that including emergent control master
Stand, direct-current commutation failure information substation and phase modifier control perform station, wherein,
The emergent control main website is used for the direct-current commutation failure information for receiving the transmission of direct-current commutation failure information substation, obtains each
DC converter station busbar voltage information and each phase modifier operation information, controlled and performed to corresponding phase modifier according to control scheme list
Station issues the instruction of modification phase modifier excitation reference voltage and duration instruction；
The direct-current commutation failure information substation is used to receive the direct-current commutation failure information that DC control and protection system is sent, and
Send that information to emergent control main website；
The phase modifier control performs station and is used to obtain each phase modifier operation information, and emergent control master will be given in the information
Stand, receive the instruction of modification phase modifier excitation reference voltage and duration instruction that emergent control main website issues, and by the information
Phase modifier exciter control system is sent to, performs phase modifier emergent control.
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| CN201710643171.XA CN107342630B (en) | 2017-07-31 | 2017-07-31 | Phase modulator emergency control method and system for inhibiting direct current continuous commutation failure |
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| CN108493995A (en) * | 2018-03-29 | 2018-09-04 | 国电南瑞科技股份有限公司 | The emergency control system and method for low frequency after meter and the reply direct current locking of wind turbine frequency modulation |
| CN108879751A (en) * | 2018-07-10 | 2018-11-23 | 南瑞集团有限公司 | Inhibit energy storage, phase modulation machine control system and the method for the continuous commutation failure of direct current |
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| CN109950913A (en) * | 2019-04-03 | 2019-06-28 | 国电南瑞科技股份有限公司 | A kind of phase modifier emergency control method and its system |
| CN110323772A (en) * | 2019-04-26 | 2019-10-11 | 国网浙江省电力有限公司电力科学研究院 | The phase modifier and capacitor control method and system of promotion direct current receiving end power system restoration ability |
| CN110323772B (en) * | 2019-04-26 | 2021-06-01 | 国网浙江省电力有限公司电力科学研究院 | Phase modulator and capacitor control method and system for direct-current receiving end power grid recovery |
| CN110581564B (en) * | 2019-08-12 | 2022-03-04 | 国家电网有限公司 | Method and system for determining extra-high voltage direct current commutation failure accelerated protection strategy |
| CN110581564A (en) * | 2019-08-12 | 2019-12-17 | 国家电网有限公司 | Method and system for determining extra-high voltage direct current commutation failure accelerated protection strategy |
| CN110601215A (en) * | 2019-09-04 | 2019-12-20 | 国网江苏省电力有限公司 | Dynamic reactive power support capability assessment method and system considering continuous commutation failure |
| CN110601215B (en) * | 2019-09-04 | 2022-09-06 | 国网江苏省电力有限公司 | Dynamic reactive power support capability assessment method and system considering continuous commutation failure constraint |
| CN112467754A (en) * | 2019-09-06 | 2021-03-09 | 南京南瑞继保电气有限公司 | Phase modulator excitation feed-forward type forced excitation control method |
| CN112467754B (en) * | 2019-09-06 | 2022-07-22 | 南京南瑞继保电气有限公司 | Phase modulator excitation feed-forward type forced excitation control method |
| CN110661269A (en) * | 2019-11-03 | 2020-01-07 | 国网湖北省电力有限公司电力科学研究院 | Phase modulator reactive power rapid supporting method for resisting direct-current continuous commutation failure |
| CN111769569B (en) * | 2020-05-26 | 2021-09-28 | 国电南瑞科技股份有限公司 | Control method, device and system for phase modulator of extra-high voltage direct current transmitting end converter station |
| CN111769569A (en) * | 2020-05-26 | 2020-10-13 | 国电南瑞科技股份有限公司 | Control method, device and system for phase modulator of extra-high voltage direct current transmitting end converter station |
| CN112234625A (en) * | 2020-09-11 | 2021-01-15 | 国网湖北省电力有限公司电力科学研究院 | Practical direct-current continuous commutation failure suppression device and method based on phase modulator and stability system |
| CN112234625B (en) * | 2020-09-11 | 2022-06-24 | 国网湖北省电力有限公司电力科学研究院 | Practical direct-current continuous commutation failure suppression device and method based on phase modulator and stability system |
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