CN108832648A - The last circuit breaker trip circuit self-sustaining removing method of big group of alternating current filter of converter station - Google Patents
The last circuit breaker trip circuit self-sustaining removing method of big group of alternating current filter of converter station Download PDFInfo
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- CN108832648A CN108832648A CN201810517674.7A CN201810517674A CN108832648A CN 108832648 A CN108832648 A CN 108832648A CN 201810517674 A CN201810517674 A CN 201810517674A CN 108832648 A CN108832648 A CN 108832648A
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- Prior art keywords
- alternating current
- last
- current filter
- big group
- sustaining
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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
- H02J3/36—Arrangements for transfer of electric power between ac networks via a high-tension dc link
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
-
- 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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
The invention discloses a kind of last circuit breaker trip circuit self-sustaining removing methods of big group of alternating current filter of converter station, the decision logic for organizing the last breaker of alternating current filter in measure and control device 6MD66 on the spot greatly is transferred in the control of Exchange Station, and increases and judge that this goes here and there the logics of other switch gap equipment states, the gate-dividing states of other switch gaps is gone here and there by being associated with this, to eliminate the self-sustaining in the big group last circuit breaker trip circuit of alternating current filter.The present invention can eliminate last circuit breaker trip circuit self-sustaining phenomenon by being associated with the equipment state of other two switches by the big group last breaker of alternating current filter of the unified judgement of Exchange Station control system.
Description
Technical field
The present invention relates to extra-high voltage DC transmission systems, and in particular to a kind of big group of alternating current filter of converter station is finally breaking
Device trip(ping) circuit self-sustaining removing method.
Background technique
Currently, there are following hidden danger in the overseas Chinese hometown ± 800kV last circuit breaker trip circuit of big group of alternating current filter of converter station：
(1) a tripping self-holding circuit is formed between breaker protection and big group filter on line protective device, trip signal is always
In the presence of causing equipment that can not restore power transmission；(2) trip(ping) circuit, which forms self-sustaining, leads to the long-term excitation of circuit correlation relay, can
Can occur burning phenomenon.
Refering to Figure 1, alternating-current field is using double female, 3/2nds modes of connection, wherein the interval A switch is route/valve
Group/standby spacing side switch, the interval B switch are switch in the contact, and the interval C switch is big group filter side switch.
It please refers to shown in Fig. 2, in the existing last breaker decision logic of big group of alternating current filter, when switch is in separating brake
When any one of position or its two sides disconnecting link are in unzipped positions, the 6MD66 of measure and control device on the spot at the interval judges the interval
In open position.
It please refers to shown in Fig. 3, in the existing last breaker decision logic of big group of alternating current filter, if route/valve group/standby
Judge the spacing devices in open position or middle switch measure and control device on the spot with the 6MD66 of measure and control device on the spot of interval switch
Switch gap equipment is in open position in 6MD66 judgement, then judge to organize greatly filter side and switch as its last breaker,
6MD66 can open positive potential to the breaker protection screen of big group alternating current filter side switch；In addition, if organizing alternating current filter side greatly
Measure and control device 6MD66 judges the spacing devices in open position to switch on the spot, then route/valve group/standby spacing switch is opened in
Close the last breaker for becoming big group alternating current filter.It follows that the existing last breaker judgement of big group of alternating current filter
Logic is not associated with the equipment interval state as last breaker.
It please refers to shown in Fig. 4, positive potential is after 6MD66 device is sent to the big group last breaker protection screen of filter, if most
Circuit breaker trip afterwards then weighs motor type relay MT1 excitation, normally opened node closure, through " last breaker starts shunt tripping to big group and hands over
Stream filter on line protects pressing plate " positive potential is sent in big group alternating current filter on line protection screen, using its " last open circuit
After the big group shunt tripping of device starting " pressing plate, excitation no-delay relay K21 and time-delay relay K22, relay K21 are small for tripping
Group filter switch, and its normally opened node closure after relay K22 delay excitation, trip signal are sent again to last breaker
In protection screen, excitation " start failure protection does not start reclosing " relay TJR, the last breaker of split-phase tripping, and excitation weight again
Motor type relay MT1.Therefore, there are self-sustaining phenomenons in the group last circuit breaker trip circuit of alternating current filter greatly.To find out its cause, be because
The equipment state of other switch gaps has only been judged for 6MD66 device, and the not associated switch gap as last breaker is set
Standby state.
After the big last circuit breaker trip of group alternating current filter or manual disconnection, it should confirm that alternating current filter on line is protected as early as possible
Device relay excitation state related to circuit breaker trip circuit last in protection device for circuit breaker, if being constantly in excitation shape
State shows that tripping forms self-sustaining, needs " finally to break by exiting in breaker protection screen or big group filter on line protection screen
The big group shunt tripping pressing plate of road device starting " eliminates last circuit breaker trip self-sustaining phenomenon.
Summary of the invention
The object of the present invention is to provide a kind of last circuit breaker trip circuit self-sustainings of big group of alternating current filter of converter station to disappear
Except method, last circuit breaker trip circuit self-sustaining phenomenon can be eliminated.
In order to achieve the above object, the technical solution adopted by the present invention is that：
A kind of last circuit breaker trip circuit self-sustaining removing method of big group of alternating current filter of converter station will fill in observing and controlling on the spot
It sets and organizes the decision logic of the last breaker of alternating current filter in 6MD66 greatly and be transferred in the control of Exchange Station, and increase and judge that this goes here and there it
The logic of his switch gap equipment state goes here and there the gate-dividing states of other switch gaps by being associated with this, to eliminate big group exchange
The self-sustaining in the last circuit breaker trip circuit of filter.
Compared with prior art, the present invention having the following advantages that：
1, improved logic is judged by Exchange Station control system according to all switch gap equipment states of this string acquired,
Exchange Station controls system and on the spot between control layer without changing wiring, and modifying in house software logic and configuration can be realized.
2, field control layer forms one-to-one relationship, more simple, intuitive between breaker protection.
3, when brownout of switch gap, power-off maintenance is also may be implemented in corresponding measure and control device 6MD66 on the spot, is avoided
Alternating current filter last breaker judges that non control system is realized.
Detailed description of the invention
Fig. 1 is big group alternating current filter switchgear distribution figure；
Fig. 2 is that measure and control device 6MD66 judges switch gap in the logic chart of open position on the spot；
Fig. 3 is the big group last breaker decision logic of alternating current filter；
Fig. 4 is the big group last circuit breaker trip self-holding circuit of alternating current filter；
Fig. 5 is the improved last breaker logic of big group of alternating current filter.
Specific embodiment
The contents of the present invention are described in further details with reference to the accompanying drawings and detailed description.
Embodiment：
The last circuit breaker trip circuit self-sustaining removing method of big group of alternating current filter of converter station of the invention, will survey on the spot
The decision logic for organizing the last breaker of alternating current filter in control device 6MD66 greatly is transferred in the control of Exchange Station, and increases judgement originally
It goes here and there the logics of other switch gap equipment states, the gate-dividing states of other switch gaps is gone here and there by being associated with this, to eliminate big group
The self-sustaining in the last circuit breaker trip circuit of alternating current filter.
Fig. 5 is the improved last breaker logic of big group of alternating current filter, and the interval C switch is big group alternating current filter side
Switch, the interval B switch are switch in the contact, and the interval A switch is route/valve group/standby spacing side switch, and system work is controlled in Exchange Station
For top control system, the 6MD66 of measure and control device on the spot and protection device for circuit breaker of last breaker are formed to correspond and be closed
System.The switch gap equipment state signal that Exchange Station control system is acquired according to fieldbus carries out big group alternating current filter and finally breaks
The logic judgment of road device, and judging result is sent by fieldbus to the observing and controlling on the spot for becoming the big group last breaker of filter
The open trip(ping) circuit positive supply of device 6MD66,6MD66 is simultaneously sent to protection device for circuit breaker, and the 6MD66 of last breaker is protected with it
Protection unit forms one-to-one relationship, realizes the big group last breaker defencive function of alternating current filter.If last circuit breaker trip,
It passes sequentially through hardwire and fieldbus and field device location status feedback is controlled into system to Exchange Station, due to finally breaking after tripping
Road device is maintained at open position, so that the logical condition of the big group last breaker of alternating current filter of Exchange Station control system judgement is discontented
Foot, to avoid the occurrence of tripping self-sustaining.
The improved last breaker logical method of big group of alternating current filter mainly has following features：(1) decision logic by
Exchange Station control system is realized, rather than existing 6MD66 device, does not need to be modified existing hardware-in-the-loop, it is easy to accomplish；
(2) when the interval A disconnects and B, C are spaced in connection status or A or B is spaced in disconnection and when C is spaced in connection, Exchange Station control
System judges to be divided into the big group last breaker of alternating current filter between C；(3) when the interval C disconnects and A and B are spaced in connection status,
Exchange Station control judges the interval A and B switch for the big group last breaker of alternating current filter；(4) Exchange Station control system will last open circuit
Device positive potential is sent in the 6MD66 device where last breaker after fieldbus, is then sent to most using hardwire
Afterwards in protection device for circuit breaker；(5) become the switch gap and other two switch gaps of last breaker due to being associated with
Equipment state, after last circuit breaker trip, positive potential disappear, self-sustaining phenomenon eliminate.
In short, the improved last breaker logic of big group of alternating current filter can realize following functions：
1, by the big group last breaker of alternating current filter of the unified judgement of Exchange Station control system；
2, by being associated with the equipment state of other two switches, it is existing that the self-sustaining of last circuit breaker trip circuit can be eliminated
As.
Above-listed detailed description is illustrating for possible embodiments of the present invention, and the embodiment is not to limit this hair
Bright the scope of the patents, all equivalence enforcements or change without departing from carried out by the present invention, is intended to be limited solely by the scope of the patents of this case.
Claims (1)
1. a kind of last circuit breaker trip circuit self-sustaining removing method of big group of alternating current filter of converter station, it is characterised in that：It will
The decision logic for organizing the last breaker of alternating current filter in measure and control device 6MD66 greatly on the spot is transferred in the control of Exchange Station, and is increased
Judge that this goes here and there the logics of other switch gap equipment states, the gate-dividing states of other switch gaps is gone here and there by being associated with this, to disappear
Except the self-sustaining in the big group last circuit breaker trip circuit of alternating current filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810517674.7A CN108832648A (en) | 2018-05-25 | 2018-05-25 | The last circuit breaker trip circuit self-sustaining removing method of big group of alternating current filter of converter station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810517674.7A CN108832648A (en) | 2018-05-25 | 2018-05-25 | The last circuit breaker trip circuit self-sustaining removing method of big group of alternating current filter of converter station |
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| Publication Number | Publication Date |
|---|---|
| CN108832648A true CN108832648A (en) | 2018-11-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810517674.7A Pending CN108832648A (en) | 2018-05-25 | 2018-05-25 | The last circuit breaker trip circuit self-sustaining removing method of big group of alternating current filter of converter station |
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| CN (1) | CN108832648A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111355223A (en) * | 2020-03-16 | 2020-06-30 | 中国南方电网有限责任公司 | Final breaker implementation method based on breaker tripping total signal |
-
2018
- 2018-05-25 CN CN201810517674.7A patent/CN108832648A/en active Pending
Non-Patent Citations (2)
| Title |
|---|
| 候诗等: "交流滤波器最后断路器动作分析", 《云南电力技术》 * |
| 刘小冰等: "兴仁换流站交流滤波器最后断路器保护跳闸回路设计隐患分析及建议", 《四川水泥》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111355223A (en) * | 2020-03-16 | 2020-06-30 | 中国南方电网有限责任公司 | Final breaker implementation method based on breaker tripping total signal |
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Application publication date: 20181116 |
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