CN203415964U - Last circuit breaker protection ESOF starting loop for DC converter station - Google Patents
Last circuit breaker protection ESOF starting loop for DC converter station Download PDFInfo
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- CN203415964U CN203415964U CN201320426966.2U CN201320426966U CN203415964U CN 203415964 U CN203415964 U CN 203415964U CN 201320426966 U CN201320426966 U CN 201320426966U CN 203415964 U CN203415964 U CN 203415964U
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- esof
- breaker protection
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Abstract
The utility model discloses a last circuit breaker protection ESOF starting loop for a DC converter station. A series of parallel wiring terminals are arranged, ESOF starting loops of a plurality of circuit breaker protection screens are parallelly connected with the parallel wiring terminals by adopting a radial manner, when a fault occurs in any or several of the ESOF starting loops of the plurality of circuit breaker protection screens, the normal operation of other normal ESOF starting loops of the circuit breaker protection screens cannot be affected, and the independence of each ESOF starting loop of the circuit breaker protection screens is guaranteed. When in the need of engineering expansion and reconstruction, ESOF starting loops of circuit breaker protection screens to be added only need to be connected to the parallel wiring terminals directly in parallel, or ESOF starting loops of circuit breaker protection screens to be detached only need to be detached from the parallel wiring terminals directly, and the ESOF starting loops of other circuit breaker protection screens do not need to make any changes, therefore the implementation of the engineering expansion and reconstruction is very convenient, and the potential safety hazard of engineering is greatly reduced.
Description
Technical field
The utility model relates to UHVDC converter station DC control resist technology field, particularly relates to the last breaker protection ESOF of a kind of DC converter station and starts loop.
Background technology
DC converter station be in DC transmission engineering direct current with exchange the system of carrying out mutual power conversion, for preventing that valve group and receiving end AC system from losing electrical link and causing valve group overvoltage, DC converter station is generally all provided with last breaker protection function.
When certain circuit breaker be valve group be connected with AC system unique circuit breaker time; as the tripping operation of breaking down of this circuit breaker; in tripping operation simultaneously; start emergency outage operation in tandem (the Emergency Switch off Sequence of DC converter station; be called for short ESOF) order; valve group is stopped transport, thereby protective valve group can not produce overvoltage.
Direct current protecting interface of DC control protection operated by rotary motion shields to receive the ESOF starting command of last circuit breaker; and current conversion station generally has tens tens breaker intervals even, so each breaker interval ESOF loop generally adopts and the mode that connects accesses direct current protecting interface screen.At present this loop the mode that connects adopt between breaker protection screen screen and jump logical mode, between by control cables, the ESOF loop of each breaker protection screen being shielded, connect hand in hand, then from a breaker protection screen wherein, are connected to direct current protecting interface screen.
But any branch road of jumping logical loop between this scheme breaker protection screen screen breaks down, all can cause being connected to this and shield later each breaker protection screen ESOF and start loop and break down; It is inreal independent that each breaker protection screen ESOF starts loop; In enlarging improvement project process, there is inconvenience and potential safety hazard.
Summary of the invention
Based on this, be necessary for the ESOF loop of existing each breaker protection screen inreal independent; In enlarging improvement project process, exist the problem of inconvenience and potential safety hazard to provide the last breaker protection ESOF of a kind of Novel DC current conversion station to start loop.
The purpose of this utility model is achieved in that
Last breaker protection ESOF starts a loop, comprises direct current protecting interface screen, binding post in parallel and a plurality of breaker protection screen; A plurality of described breaker protection screens all design independently ESOF and start loop, and a plurality of described ESOF start loop and are connected in parallel to described binding post in parallel by cable, a plurality of described ESOF start loop and adopt the radial loop of shielding to each breaker protection from binding post in parallel carry out and connect; Described direct current protecting interface screen is connected to described and connecting line terminal by cable.
In an embodiment, described binding post in parallel is paralleling two beds binding post therein.
In an embodiment, also comprise interface screen therein, described binding post in parallel is arranged in interface screen.
In an embodiment, described interface screen is 500kV serial connection mouthful screen therein.
The utility model compared with prior art, has following beneficial effect:
The last breaker protection ESOF of the utility model DC converter station starts loop; a series of binding posts in parallel are set; adopt radial mode to be connected in parallel in binding post in parallel in the ESOF loop of a plurality of breaker protection screens; any in the ESOF of a plurality of breaker protection screens startup loop or several breaking down; all can not affect the normal operation that other normal breaker protection screen ESOF start loop, guarantee that each breaker protection screen ESOF starts the independence in loop.When requirement of engineering enlarging or transformation; the ESOF loop of the breaker protection screen that only needs need be increased directly and be connected to binding post in parallel; or directly from binding post in parallel, remove the ESOF loop that needs the breaker protection of dismounting screen; the ESOF circuit connection of other breaker protection screen does not need to do any change; therefore the enforcement of extending improvement project is very convenient, and the potential safety hazard of engineering also reduces greatly.
Accompanying drawing explanation
Fig. 1 is that the last breaker protection ESOF of the utility model DC converter station starts loop structure schematic diagram.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described further.
As shown in Figure 1, the last breaker protection ESOF of a kind of DC converter station starts loop, comprises direct current protecting interface screen 110, binding post in parallel 120 and a plurality of breaker protection screen 130; A plurality of described breaker protection screens 130 all design independently ESOF and start loop, and a plurality of described ESOF start loop and are connected in parallel to described binding post in parallel 120 by cable 140, and a plurality of described ESOF start loop employing and carry out and connect to the radial loop of each breaker protection screen 130 from binding post 120 in parallel; Described direct current protecting interface screen 110 is connected to described and connecting line terminal 120 by cable 140.
The last breaker protection ESOF of above-mentioned DC converter station starts loop, a series of binding posts in parallel 120 are set, the ESOF of a plurality of breaker protection screens 130 is started to loop and adopt radial mode to be connected in parallel in binding post 120 in parallel, make the ESOF of a plurality of breaker protection screens 130 start between loop all in parallel; Any in the ESOF of a plurality of breaker protection screens 130 startup loop or several breaking down; the ESOF that all can not affect other normal breaker protection screens 130 starts the normal operation in loop; guaranteed that the ESOF of each breaker protection screen 130 starts the independence in loop, reliability improves.When requirement of engineering enlarging or transformation; the ESOF of the breaker protection screen 130 that only needs need be increased starts loop directly and is connected to binding post 120 in parallel; or directly from binding post 120 in parallel, remove and need the ESOF of the breaker protection of dismounting screen 130 to start loop; the ESOF of other breaker protection screen 130 starts circuit connection does not need to do any change; therefore the enforcement of extending improvement project is very convenient, and the potential safety hazard of engineering also reduces greatly.Meanwhile, the ESOF circuit connection definition being connected in parallel improves greatly, and a certain ESOF breaks down in loop and can find very soon, can effectively improve the efficiency of the field failure line inspection.
Described binding post in parallel 120 is paralleling two beds binding post.Binding post 120 in parallel adopts double layers of terminals, can reduce quantity, conserve space and the raw material of binding post 120 in parallel.
As shown in Figure 1, the last breaker protection ESOF of DC converter station starts loop and also comprises interface screen 150, and described binding post 120 in parallel is arranged in interface screen 150; Described interface screen 150 is preferably 500kV serial connection mouthful screen.Binding post 120 in parallel is arranged at the combination in 500kV serial connection mouthful screen, can make full use of the functional localization of 500kV serial connection mouthful screen, and both are optimum combination.Certainly, binding post 120 in parallel also can be arranged in other interfaces screens or protection screen.
The cable 140 that connects described breaker protection screen 130 is plugged and is connected by terminal with described breaker protection screen 130.When needs are extended a breaker protection and shielded 130, only the ESOF of this breaker protection screen 130 need to be started to loop and directly be connected in parallel to a 500kV serial connection mouthful screen binding post 120 in parallel; When needs are removed a breaker protection and shielded 130, also only the ESOF of this breaker protection screen 130 need to be started to loop and remove from binding post 120 in parallel.In addition, the ESOF of other breaker protection screen 130 starts circuit connection does not need to do any change, and the enforcement of therefore extending improvement project is very convenient, and the potential safety hazard of engineering also reduces greatly.
Certainly, if direct current protecting interface screen 110 has many groups to open into receiving one to one ESOF order, so described binding post 120 in parallel can not need to arrange, and can complete equally the goal of the invention of this patent.
The above embodiment has only expressed several execution mode of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection range of the present utility model.Therefore, the protection range of the utility model patent should be as the criterion with claims.
Claims (4)
1. the last breaker protection ESOF of DC converter station starts a loop, it is characterized in that, comprises direct current protecting interface screen, binding post in parallel and a plurality of breaker protection screen; A plurality of described breaker protection screens all design independently ESOF and start loop, and a plurality of described ESOF start loop and are connected in parallel to described binding post in parallel by cable, a plurality of described ESOF start loop and adopt the radial loop of shielding to each breaker protection from binding post in parallel carry out and connect; Described direct current protecting interface screen is connected to described and connecting line terminal by cable.
2. the last breaker protection ESOF of DC converter station according to claim 1 starts loop, it is characterized in that, described binding post in parallel is paralleling two beds binding post.
3. the last breaker protection ESOF of DC converter station according to claim 1 and 2 starts loop, it is characterized in that, also comprises interface screen, and described binding post in parallel is arranged in interface screen.
4. the last breaker protection ESOF of DC converter station according to claim 3 starts loop, it is characterized in that, described interface screen is 500kV serial connection mouthful screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320426966.2U CN203415964U (en) | 2013-07-16 | 2013-07-16 | Last circuit breaker protection ESOF starting loop for DC converter station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320426966.2U CN203415964U (en) | 2013-07-16 | 2013-07-16 | Last circuit breaker protection ESOF starting loop for DC converter station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203415964U true CN203415964U (en) | 2014-01-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320426966.2U Expired - Fee Related CN203415964U (en) | 2013-07-16 | 2013-07-16 | Last circuit breaker protection ESOF starting loop for DC converter station |
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| CN (1) | CN203415964U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104377648A (en) * | 2014-09-30 | 2015-02-25 | 南方电网科学研究院有限责任公司 | Last breaker backup protection method based on evidence theory |
| CN107437795A (en) * | 2017-09-20 | 2017-12-05 | 南方电网科学研究院有限责任公司 | Polar ESOF control method for hybrid direct-current power transmission system and hybrid direct-current power transmission system |
-
2013
- 2013-07-16 CN CN201320426966.2U patent/CN203415964U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104377648A (en) * | 2014-09-30 | 2015-02-25 | 南方电网科学研究院有限责任公司 | Last breaker backup protection method based on evidence theory |
| CN107437795A (en) * | 2017-09-20 | 2017-12-05 | 南方电网科学研究院有限责任公司 | Polar ESOF control method for hybrid direct-current power transmission system and hybrid direct-current power transmission system |
| CN107437795B (en) * | 2017-09-20 | 2020-06-26 | 南方电网科学研究院有限责任公司 | Polar ESOF control method for hybrid direct-current power transmission system and hybrid direct-current power transmission system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: CHINA ENERGY ENGINEERING GROUP GUANGDONG ELECTRIC Free format text: FORMER NAME: CHINA ENERGY ENGINEERING GROUP GUANGDONG ELECTRIC POWER DESIGN INSTITUTE |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 510663 Luogang District, Guangdong, Guangzhou Science City Fung Road, No. 1, No. Patentee after: Company limited of China Energy Engineering Group Guangdong Electric Power Design Institute Address before: 510663 Luogang District, Guangdong, Guangzhou Science City Fung Road, No. 1, No. Patentee before: Guangdong Electric Power Design Institute of CEEC |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140129 Termination date: 20200716 |