CN104092232A - Automatic locking method for battery replacement station of flexible direct-current transmission system - Google Patents
Automatic locking method for battery replacement station of flexible direct-current transmission system Download PDFInfo
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- CN104092232A CN104092232A CN201410300300.1A CN201410300300A CN104092232A CN 104092232 A CN104092232 A CN 104092232A CN 201410300300 A CN201410300300 A CN 201410300300A CN 104092232 A CN104092232 A CN 104092232A
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 34
- 238000006243 chemical reaction Methods 0.000 claims description 23
- 230000000903 blocking effect Effects 0.000 claims description 22
- 238000004891 communication Methods 0.000 claims description 17
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/60—Arrangements for transfer of electric power between AC networks or generators via a high voltage DC link [HVCD]
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Abstract
The invention discloses an automatic locking method for a battery replacement station of a flexible direct-current transmission system. The automatic locking method includes the steps of firstly, judging the control mode of the station, the running state of the station and the running states of other stations; secondly, judging the current running state when the flexible direct-current system runs if the station is judged to have the direct-current voltage control mode, the station is in the unlocked state and meanwhile other stations are all in the locked state; thirdly, starting the locking process of the station according to a received system locking control instruction if all the conditions are met, and conducting reactive power reduction control; fourthly, sending a window signal to complete the locking process if the reactive power of the convertor station is zero at present. By means of the automatic locking method, a control and protection system is automatically locked, the locking process of the flexible direct-current transmission system is shortened, impact which is caused by control and protection system incorrect operation generated due to man-made incorrect operation and the like to an alternating-current system is effectively avoided, time consumption of the whole locking process of the flexible direct-current system is lowered, and the complexity in the locking process is lowered.
Description
Technical field
The invention belongs to flexible DC power transmission field, be specifically related to a kind of flexible DC power transmission system electrical changing station automatic blocking method.
Background technology
In existing flexible DC power transmission engineering, no matter both-end flexible direct current engineering or multiterminal flexible DC power transmission engineering, all cannot realize the locking of whole flexible DC power transmission system automatically.Each current conversion station is responsible for local terminal current conversion station locking process separately, under scheduling unified allocation of resources, realize the locking successively of each current conversion station, unavoidably extend whole system locking process, strengthen indivedual current conversion station tripping operations in system locking process and cause whole system tripping operation risk.Meanwhile, in whole locking process, human factor dominate, may cause in flexible direct current system and determine voltage control current conversion station prior to determining the locking of active power control current conversion station, causes and controls protection system misoperation, affects ac and dc systems stable operation.
Summary of the invention
The object of this invention is to provide a kind of flexible DC power transmission system electrical changing station automatic blocking method, realize flexible DC power transmission system automatic blocking.
In order to realize above object, the technical solution adopted in the present invention is: a kind of flexible DC power transmission system electrical changing station automatic blocking method, comprises the steps:
(1) judge the control model of our station and the running status at our station and other stations;
(2) if our station is for surely there being DC voltage control pattern, and our station in released state simultaneously other stations all in blocking, judge that whether current flexible direct current system is in release operational mode, and whether whether operate between system layer control model or remote dispatching control model and station communication state normal;
(3) if above-mentioned condition all meets, start our station locking process according to the system lock-in control instruction receiving, Reactive Power Control is fallen;
(4) if current current conversion station reactive power is zero, send locking start pulse signal, complete locking process, realize this flexible DC power transmission system and stop transport.
In this flexible DC power transmission system, between each electrical changing station, carry out communication information mutual.
The information that each electrical changing station exchanges mutually comprises communication state signal between station operating state signal, the control model of standing signal and station.
Current current conversion station reactive power is 1 o'clock, sends locking start pulse signal to valve control system.
Flexible DC power transmission system automatic blocking method of the present invention has realized the automatic blocking of controlling protection system in flexible DC power transmission engineering; shorten flexible DC power transmission system locking process; effectively avoid people to control the impact of protection system misoperation to AC system for misoperation etc. causes; reduce whole flexible direct current system locking process consuming time simultaneously; reduce numerous and diverse degree in locking process, improved alterating and direct current network operation reliability.
Brief description of the drawings
Fig. 1 is both-end flexible DC power transmission system control protection system relational structure figure;
Fig. 2 is multiterminal flexible DC power transmission system control protection system relational structure figure;
Fig. 3 is both-end flexible direct current system constant DC voltage control current conversion station latching logic block diagram;
Fig. 4 is multiterminal flexible direct current system constant DC voltage control current conversion station latching logic block diagram.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment, the present invention is described further.
Be respectively as depicted in figs. 1 and 2 both-end and multiterminal flexible DC power transmission system control protection system relational structure, as seen from the figure, no matter be both-end or multiterminal, corresponding each current conversion station control protection system is redundant system.In normal course of operation, control protection system and adopt active/standby mode operation, if current master control system breaks down, the back-up system in hot stand-by duty transfers primary system automatically to, and whole system handoff procedure can not produce disturbance to direct current power transmission.Controlling protection system adopts two to get a trip protection outlet logic; it is separate that two covers are controlled protection system; every cover protection system has two independent measurement loops; be respectively used to enable logic and action logic judgement; the two output signal carry out " with "; be enable logic and action logic all effectively in situation, protection actuating signal can effectively be exported.
Between current conversion station, communication information completes by electric power special communication network alternately, needs to set up communication channel between quick station between each current conversion station, for sharing each current conversion station operating condition.For ensureing communication signal link reliability between station, every cover control protection system redundant configuration, all adopts dual link communication modes for subsequent use each other, guarantee information transmission reliability to greatest extent.Corresponding to automatic blocking logical design, the mutual exchange message of respectively standing specifically comprises: the operating state signal of standing (stand unlocking signal or station block signal), the control model of stand signal (active power of stand control model signal or stand erectly and flow voltage mode control signal) and stand between communication state signal (whether normal) etc.
Flexible DC power transmission system electrical changing station automatic blocking method provided by the invention comprises the steps:
(1) judge the control model of our station and the running status at our station and other stations;
(2) if our station is for surely there being DC voltage control pattern, and our station in released state simultaneously other stations all in blocking, judge that whether current flexible direct current system is in release operational mode, and whether whether operate between system layer control model or remote dispatching control model and station communication state normal;
(3) if above-mentioned condition all meets, start our station locking process according to the system lock-in control instruction receiving, Reactive Power Control is fallen;
(4) if current current conversion station reactive power is zero, send locking start pulse signal, complete locking process, realize this flexible DC power transmission system and stop transport.
For ensureing flexible DC power transmission system automatic blocking reliability; this inventive method has self-diagnostic function design; communications status between the current current conversion station of real-time judge; when in communication failure situation between station; automatic shield flexible DC power transmission system automatic blocking function; and send a warning message in operator control system, improve in system locking process and control protection system reliability.
Be illustrated in figure 3 double ended system automatic blocking constant DC voltage control station latching logic figure, first control system judges that this station is constant DC voltage control current conversion station, and system operates in system layer control model or remote dispatching control model, and between standing, communication state is normal.Meet in situation in above-mentioned condition, after control system receives system block signal and receives station blocking signal, automatically start our station locking process, fall Reactive Power Control.In the time that control system detects that current current conversion station exchange reactive power is zero, send locking start pulse signal to valve control system, complete our station locking process.So far, completing both-end flexible DC power transmission system stops transport.
Multi-terminal system automatic blocking constant DC voltage control station latching logic figure as shown in Figure 4, first control system judges that this station is constant DC voltage control current conversion station, and system operates in system layer control model or remote dispatching control model, communication state OK between standing.Meet in situation in above-mentioned condition, when control system receives system block signal and receives after all the other end current conversion station blocking signals, automatically start our station locking process, fall Reactive Power Control.In the time that control system detects that current current conversion station exchange reactive power is zero, send locking start pulse signal to valve control system, complete our station locking process.So far, completing multiterminal flexible DC power transmission system stops transport.
Above embodiment is only for helping to understand core concept of the present invention; can not limit the present invention with this; for those skilled in the art; every foundation thought of the present invention; the present invention is modified or is equal to replacement; any change of doing in specific embodiments and applications, within all should being included in protection scope of the present invention.
Claims (4)
1. a flexible DC power transmission system electrical changing station automatic blocking method, is characterized in that, comprises the steps:
(1) judge the control model of our station and the running status at our station and other stations;
(2) if our station is for surely there being DC voltage control pattern, and our station in released state simultaneously other stations all in blocking, judge that whether current flexible direct current system is in release operational mode, and whether whether operate between system layer control model or remote dispatching control model and station communication state normal;
(3) if above-mentioned condition all meets, start our station locking process according to the system lock-in control instruction receiving, Reactive Power Control is fallen;
(4) if current current conversion station reactive power is zero, send locking start pulse signal, complete locking process, realize this flexible DC power transmission system and stop transport.
2. flexible DC power transmission system electrical changing station automatic blocking method according to claim 1, is characterized in that: it is mutual in this flexible DC power transmission system, between each electrical changing station, to carry out communication information.
3. flexible DC power transmission system electrical changing station automatic blocking method according to claim 2, is characterized in that: the information that each electrical changing station exchanges mutually comprises communication state signal between station operating state signal, the control model of standing signal and station.
4. flexible DC power transmission system electrical changing station automatic blocking method according to claim 1, is characterized in that: current current conversion station reactive power is 1 o'clock, sends locking start pulse signal to valve control system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410300300.1A CN104092232B (en) | 2014-06-26 | 2014-06-26 | A kind of flexible direct current power transmission system electrical changing station automatic blocking method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410300300.1A CN104092232B (en) | 2014-06-26 | 2014-06-26 | A kind of flexible direct current power transmission system electrical changing station automatic blocking method |
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| Publication Number | Publication Date |
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| CN104092232A true CN104092232A (en) | 2014-10-08 |
| CN104092232B CN104092232B (en) | 2016-06-29 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104362660A (en) * | 2014-10-11 | 2015-02-18 | 中国南方电网有限责任公司 | Double-pole operation method of high-voltage direct-current power transmission system in in-station grounding mode |
| CN105680468A (en) * | 2016-04-15 | 2016-06-15 | 国网福建省电力有限公司 | Flexible direct current convertor station valve hall anti-misoperation door interlock system |
| CN107171353A (en) * | 2017-06-15 | 2017-09-15 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | A kind of light-operated valve control method for preventing that electric current can not be set up during direct current unblock |
| CN109888749A (en) * | 2019-03-20 | 2019-06-14 | 国网冀北电力有限公司检修分公司 | A kind of dc circuit breaker control method and device |
| CN110165697A (en) * | 2019-06-06 | 2019-08-23 | 北京四方继保自动化股份有限公司 | Multiterminal flexible direct current distribution system start & shutdown through one key method and device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102299506A (en) * | 2011-08-24 | 2011-12-28 | 中国电力科学研究院 | Protection system and method thereof for modular multi-level converter |
| CN102427245A (en) * | 2011-10-11 | 2012-04-25 | 山东大学 | Movable model device of system of offshore wind power synchronized through flexible DC (Direct Current) power transmission |
| CN102856897A (en) * | 2012-09-12 | 2013-01-02 | 中国能源建设集团广东省电力设计研究院 | Method and strategy for stopping three-end flexible DC power transmission system |
| CN102857086A (en) * | 2012-09-12 | 2013-01-02 | 中国能源建设集团广东省电力设计研究院 | Device and method for starting three-terminal flexible direct-current power transmission system |
-
2014
- 2014-06-26 CN CN201410300300.1A patent/CN104092232B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102299506A (en) * | 2011-08-24 | 2011-12-28 | 中国电力科学研究院 | Protection system and method thereof for modular multi-level converter |
| CN102427245A (en) * | 2011-10-11 | 2012-04-25 | 山东大学 | Movable model device of system of offshore wind power synchronized through flexible DC (Direct Current) power transmission |
| CN102856897A (en) * | 2012-09-12 | 2013-01-02 | 中国能源建设集团广东省电力设计研究院 | Method and strategy for stopping three-end flexible DC power transmission system |
| CN102857086A (en) * | 2012-09-12 | 2013-01-02 | 中国能源建设集团广东省电力设计研究院 | Device and method for starting three-terminal flexible direct-current power transmission system |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104362660A (en) * | 2014-10-11 | 2015-02-18 | 中国南方电网有限责任公司 | Double-pole operation method of high-voltage direct-current power transmission system in in-station grounding mode |
| CN104362660B (en) * | 2014-10-11 | 2016-11-30 | 中国南方电网有限责任公司 | The bipolar operation method of earthing mode in HVDC transmission system station |
| CN105680468A (en) * | 2016-04-15 | 2016-06-15 | 国网福建省电力有限公司 | Flexible direct current convertor station valve hall anti-misoperation door interlock system |
| CN105680468B (en) * | 2016-04-15 | 2018-09-25 | 国网福建省电力有限公司 | A kind of fool proof door interlock system in flexible direct current converter station valve Room |
| CN107171353A (en) * | 2017-06-15 | 2017-09-15 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | A kind of light-operated valve control method for preventing that electric current can not be set up during direct current unblock |
| CN107171353B (en) * | 2017-06-15 | 2020-03-20 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Light control valve control method for preventing current from being unable to be established during direct current unlocking |
| CN109888749A (en) * | 2019-03-20 | 2019-06-14 | 国网冀北电力有限公司检修分公司 | A kind of dc circuit breaker control method and device |
| CN109888749B (en) * | 2019-03-20 | 2021-04-09 | 国网冀北电力有限公司检修分公司 | Control method and device for direct current circuit breaker |
| CN110165697A (en) * | 2019-06-06 | 2019-08-23 | 北京四方继保自动化股份有限公司 | Multiterminal flexible direct current distribution system start & shutdown through one key method and device |
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| Publication number | Publication date |
|---|---|
| CN104092232B (en) | 2016-06-29 |
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