CN103928910A - Protection system of ultra-high-voltage direct-current transmission converter station - Google Patents
Protection system of ultra-high-voltage direct-current transmission converter station Download PDFInfo
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- CN103928910A CN103928910A CN201410172083.2A CN201410172083A CN103928910A CN 103928910 A CN103928910 A CN 103928910A CN 201410172083 A CN201410172083 A CN 201410172083A CN 103928910 A CN103928910 A CN 103928910A
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Abstract
The invention relates to a protection system of an ultra-high-voltage direct-current transmission converter station. Each protected area is no longer protected independently, and instead, one protection system is configured for a plurality of related protected areas, for example, a high-end valve group protection system body is configured for a high-end converter protection area and a high-end converter transformer protection area, and a low-end valve group protection system body is configured for a low-end converter protection area and a low-end converter transformer protection area. A fault in any of the converter transformer protection areas and the converter protection areas can cause locking of a valve group on the corresponding layer, so that the mode that the converter transformer protection areas and the converter protection areas are configured together better accords with the actual running protection conditions of the system, protection configuration levels are clearer, system configuration is simplified, the number of wires connected between screens is reduced, reliability of the system is improved, and the cost of the protection system and the construction cost and running cost of the converter station are reduced.
Description
Technical field
The present invention relates to the configuration of a kind of protection system of extra-high-voltage direct-current power transmission converter, particularly its protection.
Background technology
Extra-high-voltage direct-current power transmission converter protection system is the visual plant of current conversion station, realizes the defencive function to various faults in whole current conversion station.
The protection collocation method of extra-high-voltage direct-current power transmission converter generally adopts subregion, layered configuration, and reasonable, succinct collocation method can improve the reliability of system, and reduces system cost.
Existing current conversion station protection collocation method adopts the mode to each subregion separate configurations to converter transformer protection zone, causes protection system complexity, and screen cabinet quantity is large, and wiring amount is large, complicated, and cost is high.
Specifically, extra-high-voltage direct-current power transmission converter protection system subregion as shown in Figure 1, be divided into high-end converter unit protection district, high-end converter transformer protection zone, low side converter unit protection district, low side converter transformer protection zone, utmost point protection zone and DC filter protection zone, bipolar protection zone, and AC filter protection district, AC filter protection district is specially: first group of AC filter protection district, AC filter protection district of first Zu Neige group, second largest group of AC filter protection district, AC filter protection district of second largest Zu Neige group, the third-largest group of AC filter protection district, AC filter protection district of the third-largest Zu Neige group, the fourth-largest group of AC filter protection district, AC filter protection district of the fourth-largest Zu Neige group.
According to above subregion, the corresponding protection system of the equal separate configurations of each subregion.But in actual motion; as converter transformer protection zone and converter unit protection district; arbitrary region fault all will cause the locking of this layer of valve group; so can not reflect actual motion protection situation to converter and converter transformer protection zone separate configurations, but also increase complexity and the system cost of system.
Bipolar protection zone is adopted to separate configurations, and after protection action, directly locking is bipolar, if there is malfunction, by increasing the accident of system, has great risk.
To AC filter protection district; existing protection allocation plan is according to large group, group's filter separate configurations; four large group of current conversion station one general configuration; in each large group, contain five groups; separate configurations method causes protection system various; complex structure, has increased system cost, has reduced the reliability of protection system.
Summary of the invention
The object of this invention is to provide a kind of protection system of extra-high-voltage direct-current power transmission converter, be unsuitable for actual motion protection situation and complicated problem in order to the protection configuration that solves existing protection system.
For achieving the above object, the solution of the present invention comprises:
The protection system of extra-high-voltage direct-current power transmission converter, be divided into high-end converter unit protection district, high-end converter transformer protection zone, low side converter unit protection district, low side converter transformer protection zone, utmost point protection zone and DC filter protection zone, bipolar protection zone, first group of AC filter protection district, AC filter protection district of first Zu Neige group, second largest group of AC filter protection district, AC filter protection district of second largest Zu Neige group, the third-largest group of AC filter protection district, AC filter protection district of the third-largest Zu Neige group, the fourth-largest group of AC filter protection district, AC filter protection district of the fourth-largest Zu Neige group, described high-end converter unit protection district, high-end converter transformer protection zone arranges a set of high-end valve unit protection system, described low side converter unit protection district, low side converter transformer protection zone arranges a set of low side valve unit protection system.
Described utmost point protection zone and DC filter protection zone, bipolar protection zone arrange a set of utmost point protection system.
First group of AC filter protection district, AC filter protection district of first Zu Neige group configure a set of first group of protective system for alternating current filter; Second largest group of AC filter protection district, AC filter protection district of second largest Zu Neige group configure a set of and organize greatly protective system for alternating current filter; The third-largest group of AC filter protection district, AC filter protection district of the third-largest Zu Neige group configure a set of the third-largest group of protective system for alternating current filter; The fourth-largest group of AC filter protection district, AC filter protection district of the fourth-largest Zu Neige group configure a set of the fourth-largest group of protective system for alternating current filter.
Described a set of high-end valve unit protection system is provided with three screens, and three screens are got two devices by three and are connected to control system.
Described a set of utmost point protection system is provided with three screens, and three screens are got two devices by three and are connected to control system.
First group of protective system for alternating current filter, second largest group of protective system for alternating current filter, the third-largest group of protective system for alternating current filter, the fourth-largest group of protective system for alternating current filter, every cover protection system is equipped with the two sides screen of dual configuration.
Protection system of the present invention, separate configurations protection is no longer carried out in protection zone, but some associated protection zones are configured to a set of protection, as high-end converter unit protection district, high-end converter transformer protection zone arrange a set of high-end valve unit protection system, low side converter unit protection district, low side converter transformer protection zone arrange a set of low side valve unit protection system; Due to converter transformer protection zone and converter unit protection district; arbitrary region fault all will cause the locking of this layer of valve group; so converter transformer and converter unit protection district are fitted together; more meet running protection situation; and make like this protection configuration level more clear, and simplify system configuration, reduce the line between screen; the reliability of raising system, has reduced the cost of protection system and current conversion station construction, operating cost.
Brief description of the drawings
Fig. 1 is the protection subregion schematic diagram of extra-high voltage direct-current transmission converter;
Fig. 2 is the high and low end valve unit protection of embodiment or the configuration of utmost point protection system and logic outlet schematic diagram;
Fig. 3 is configuration and the logic outlet schematic diagram (taking first group as example) of protective system for alternating current filter.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described in detail.
Basic scheme of the present invention is: the protection system of extra-high-voltage direct-current power transmission converter, be divided into high-end converter unit protection district, high-end converter transformer protection zone, low side converter unit protection district, low side converter transformer protection zone, utmost point protection zone and DC filter protection zone, bipolar protection zone, first group of AC filter protection district, AC filter protection district of first Zu Neige group, second largest group of AC filter protection district, AC filter protection district of second largest Zu Neige group, the third-largest group of AC filter protection district, AC filter protection district of the third-largest Zu Neige group, the fourth-largest group of AC filter protection district, AC filter protection district of the fourth-largest Zu Neige group, high-end converter unit protection district, high-end converter transformer protection zone arranges a set of high-end valve unit protection system, low side converter unit protection district, low side converter transformer protection zone arranges a set of low side valve unit protection system.
Concrete, the following table is the protection system configuration table of comparisons of protection subregion, the configuration of former protection system, embodiment.
As can be seen from the above table, except converter transformer and converter unit protection district; Utmost point protection zone and DC filter protection zone, bipolar protection zone arrange a set of utmost point protection system.First group of AC filter protection district, AC filter protection district of first Zu Neige group configure a set of first group of protective system for alternating current filter; Second largest group of AC filter protection district, AC filter protection district of second largest Zu Neige group configure a set of and organize greatly protective system for alternating current filter; The third-largest group of AC filter protection district, AC filter protection district of the third-largest Zu Neige group configure a set of the third-largest group of protective system for alternating current filter; The fourth-largest group of AC filter protection district, AC filter protection district of the fourth-largest Zu Neige group configure a set of the fourth-largest group of protective system for alternating current filter.
Protection system can realize with built-in industrial control platform or PC device, and these two kinds of devices are the conventional devices in extra-high voltage direct-current transmission field.The configuration of high and low end valve unit protection or utmost point protection system and logic outlet schematic diagram as shown in Figure 2, adopts triple modular redundant collocation strategy, and the defencive function signal of protection system is respectively by independently three getting two devices and carry out three and get final outlet after two logics judgements.
The configuration of protective system for alternating current filter and logic outlet schematic diagram are as shown in Figure 3.The collocation strategy of each large group of filter configuration dual; outlet logic in every cover protection system adopts and starts the strategy that adds action; when enable logic and the action logic of certain protection move simultaneously; to really export effective actuating signal; start identical with action logic; the decision logic starting and move passes through independently hardware and measuring circuit realization thereof, the malfunction can effectively avoid single cover protection system generation single failure time.
Can also find out from upper table; the configuration mode of embodiment can be simplified 49 cover protection systems; simplify whole system structure; reduce wiring between a large amount of screens; save the relevant cost of partial common CT; save current conversion station control protection cell area occupied, effectively reduced the cost that protection system configuration and current conversion station are built, improved the reliability of protection system.
More than provided concrete execution mode, but the present invention is not limited to described execution mode.Basic ideas of the present invention are above-mentioned basic scheme, and for those of ordinary skill in the art, according to instruction of the present invention, model, formula, the parameter of designing various distortion do not need to spend creative work.Variation, amendment, replacement and the modification of without departing from the principles and spirit of the present invention execution mode being carried out still fall within the scope of protection of the present invention.
Claims (6)
1. the protection system of extra-high-voltage direct-current power transmission converter, be divided into high-end converter unit protection district, high-end converter transformer protection zone, low side converter unit protection district, low side converter transformer protection zone, utmost point protection zone and DC filter protection zone, bipolar protection zone, first group of AC filter protection district, AC filter protection district of first Zu Neige group, second largest group of AC filter protection district, AC filter protection district of second largest Zu Neige group, the third-largest group of AC filter protection district, AC filter protection district of the third-largest Zu Neige group, the fourth-largest group of AC filter protection district, AC filter protection district of the fourth-largest Zu Neige group, it is characterized in that, described high-end converter unit protection district, high-end converter transformer protection zone arranges a set of high-end valve unit protection system, described low side converter unit protection district, low side converter transformer protection zone arranges a set of low side valve unit protection system.
2. the protection system of extra-high-voltage direct-current power transmission converter according to claim 1, is characterized in that, described utmost point protection zone and DC filter protection zone, bipolar protection zone arrange a set of utmost point protection system.
3. the protection system of extra-high-voltage direct-current power transmission converter according to claim 2, is characterized in that, first group of AC filter protection district, AC filter protection district of first Zu Neige group configure a set of first group of protective system for alternating current filter; Second largest group of AC filter protection district, AC filter protection district of second largest Zu Neige group configure a set of and organize greatly protective system for alternating current filter; The third-largest group of AC filter protection district, AC filter protection district of the third-largest Zu Neige group configure a set of the third-largest group of protective system for alternating current filter; The fourth-largest group of AC filter protection district, AC filter protection district of the fourth-largest Zu Neige group configure a set of the fourth-largest group of protective system for alternating current filter.
4. the protection system of extra-high-voltage direct-current power transmission converter according to claim 1, is characterized in that, described a set of high-end valve unit protection system is provided with three screens, and three screens are got two devices by three and are connected to control system.
5. the protection system of extra-high-voltage direct-current power transmission converter according to claim 2, is characterized in that, described a set of utmost point protection system is provided with three screens, and three screens are got two devices by three and are connected to control system.
6. the protection system of extra-high-voltage direct-current power transmission converter according to claim 3; it is characterized in that; first group of protective system for alternating current filter, second largest group of protective system for alternating current filter, the third-largest group of protective system for alternating current filter, the fourth-largest group of protective system for alternating current filter, every cover protection system is equipped with the two sides screen of dual configuration.
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| CN201410172083.2A CN103928910B (en) | 2014-04-25 | 2014-04-25 | The protection system of extra-high-voltage direct-current power transmission converter |
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| CN201410172083.2A CN103928910B (en) | 2014-04-25 | 2014-04-25 | The protection system of extra-high-voltage direct-current power transmission converter |
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| CN103928910B CN103928910B (en) | 2016-11-16 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104794844A (en) * | 2015-04-23 | 2015-07-22 | 许继集团有限公司 | Converter station valve hall fire signal extension device |
| CN104849541A (en) * | 2015-05-14 | 2015-08-19 | 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 | Method for realizing voltage measurement abnormity detection in direct-current protection system |
| CN104849534A (en) * | 2015-05-14 | 2015-08-19 | 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 | Method for realizing voltage measurement abnormity detection in direct-current station control system |
| CN105322536A (en) * | 2015-10-23 | 2016-02-10 | 深圳供电局有限公司 | Protection configuration method of typical multi-terminal flexible direct current power distribution system |
| WO2018024190A1 (en) * | 2016-08-02 | 2018-02-08 | 南京南瑞继保电气有限公司 | Rapid protection system |
| CN108879625A (en) * | 2018-07-19 | 2018-11-23 | 南京南瑞继保电气有限公司 | A kind of parallel connection multiterminal extra-high voltage direct-current transmission valve unit protection action processing method |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104794844A (en) * | 2015-04-23 | 2015-07-22 | 许继集团有限公司 | Converter station valve hall fire signal extension device |
| CN104794844B (en) * | 2015-04-23 | 2017-09-12 | 许继集团有限公司 | A kind of converter station valve hall fire signal expanding unit |
| CN104849541A (en) * | 2015-05-14 | 2015-08-19 | 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 | Method for realizing voltage measurement abnormity detection in direct-current protection system |
| CN104849534A (en) * | 2015-05-14 | 2015-08-19 | 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 | Method for realizing voltage measurement abnormity detection in direct-current station control system |
| CN104849534B (en) * | 2015-05-14 | 2018-02-23 | 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 method for realizing voltage measurement abnormality detection in direct current station control system |
| CN104849541B (en) * | 2015-05-14 | 2018-02-23 | 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 method for realizing voltage measurement abnormality detection in DC protection system |
| CN105322536A (en) * | 2015-10-23 | 2016-02-10 | 深圳供电局有限公司 | Protection configuration method of typical multi-terminal flexible direct current power distribution system |
| CN105322536B (en) * | 2015-10-23 | 2018-06-26 | 深圳供电局有限公司 | Protection configuration method of typical multi-terminal flexible direct current power distribution system |
| WO2018024190A1 (en) * | 2016-08-02 | 2018-02-08 | 南京南瑞继保电气有限公司 | Rapid protection system |
| CN108879625A (en) * | 2018-07-19 | 2018-11-23 | 南京南瑞继保电气有限公司 | A kind of parallel connection multiterminal extra-high voltage direct-current transmission valve unit protection action processing method |
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| CN103928910B (en) | 2016-11-16 |
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