CN103337832B - A kind of DC filter guard method - Google Patents
A kind of DC filter guard method Download PDFInfo
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- CN103337832B CN103337832B CN201310260184.0A CN201310260184A CN103337832B CN 103337832 B CN103337832 B CN 103337832B CN 201310260184 A CN201310260184 A CN 201310260184A CN 103337832 B CN103337832 B CN 103337832B
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- protection system
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Abstract
The present invention relates to a kind of DC filter guard method; it is respectively configured independent protection system according to two groups of DC filters; the often protection system of group DC filter configuration two set fully redundance; often set protection system adopts and starts the egress policy adding action; start and the decision logic of action is completed by independent hardware and measurement loop; can effectively avoid single element fault in single set protection system to cause malfunction or the tripping of protection, improve the reliability of DC filter protection system.
Description
Technical field
The present invention relates to a kind of DC filter guard method in high voltage direct current transmission project, it is adaptable to D.C. high voltage transmission DC filter protection system.
Background technology
As it is shown in figure 1, DC filter is the visual plant in HVDC transmission system, DC filter protection system realizes the various failure protection function of DC filter. DC filter defencive function is generally realized by two kinds of collocation methods: one is to be integrated in DC pole protection system by all of for DC filter defencive function; employing triple modular redundant configures; by two from three logic export; the method makes DC filter protection lack necessary independence, and when electrode protector breaks down, DC filter defencive function is forced to exit.
Another mode adopts the separate configurations of two set fully redundances, as long as there being a set of protection system output action then protection act, for often overlapping protection system in the method, if it occur that single element fault, protection system exists the risk of malfunction.
Summary of the invention
It is an object of the invention to provide a kind of DC filter guard method, in order to solve the problem that existing two set redundancy configuration method would be likely to occur malfunction risk when single element fault.
For achieving the above object, the solution of the present invention is:
Group DC filter protection system often configures two set protection systems of full redundancy; often the outlet logic in set protection system adopts and starts the strategy adding action: when starting logic and action logic action simultaneously, the effective actuating signal of output correspondence set protection system.
Start identical with action logic, start and the decision logic of action by independent hardware and measures loop realization.
Two groups of double tunning DC filters are provided completely self-contained protection system by the present invention, often the separate configurations of group DC filter configuration two set fully redundance, and the separate configurations of defencive function system improves the reliability of DC filter protection system;Often set protection system adopts and starts the egress policy adding action; start and the decision logic of action is completed by independent hardware and measurement loop; relative to redundant configuration scheme; can effectively avoid single element fault in single set protection system to cause the malfunction problem of protection, improve the reliability of DC filter protection system.
Accompanying drawing explanation
Fig. 1 is Typical Disposition and the connection diagram of DC filter in high voltage direct current transmission project;
Fig. 2 is the configuration schematic diagram of DC filter of the present invention protection system;
Fig. 3 is the logic chart that the present invention often overlaps DC filter protection system.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention will be further described in detail.
The Typical Disposition of DC filter and connection diagram in high voltage direct current transmission project, as shown in Figure 1. Two groups of double tunning DC filters are arranged in the middle of high direct voltage bus and DC bus, and the structure often organizing DC filter is made up of elements such as high-side capacitance device and low-side resistor inductance.
The present invention can realize with built-in industrial parametric controller or PC device, and these two kinds of devices are the devices that high-voltage dc transmission electrical domain is conventional. Protection system protects the configuration schematic diagram (Fig. 2) of system to configure according to DC filter, and namely two groups of DC filters are respectively configured independent protection system, often the protection system of group DC filter configuration two set fully redundance.
The often logic chart of set DC filter protection system; group DC filter protection system often configures two set protection systems of full redundancy; often the outlet logic in set protection system adopts and starts the strategy adding action: when starting logic and action logic action simultaneously, the effective actuating signal of output correspondence set protection system.
Start identical with action logic, start and the decision logic of action by independent hardware and measures loop realization.
As shown in Figure 3. Often set DC filter protection system has two independent measurement loops; it is separately input into startup logic and action logic; independent logical judgment is carried out by independent hardware; then both output signals are carried out " with "; when namely both having output signal, can finally export effective actuating signal to pole control system A, B.
Claims (2)
1. a DC filter guard method; it is characterized in that; the often corresponding one group of DC filter protection system of group DC filter; group DC filter protection system often configures two set protection systems of full redundancy; often the outlet logic in set protection system adopts and starts the strategy adding action: when starting logic and action logic action simultaneously, the effective actuating signal of output correspondence set protection system.
2. a kind of DC filter guard method according to claim 1, it is characterised in that start identical with action logic, starts and the decision logic of action is realized by independent hardware and measurement loop thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310260184.0A CN103337832B (en) | 2013-06-26 | 2013-06-26 | A kind of DC filter guard method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310260184.0A CN103337832B (en) | 2013-06-26 | 2013-06-26 | A kind of DC filter guard method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103337832A CN103337832A (en) | 2013-10-02 |
| CN103337832B true CN103337832B (en) | 2016-06-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310260184.0A Expired - Fee Related CN103337832B (en) | 2013-06-26 | 2013-06-26 | A kind of DC filter guard method |
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| CN (1) | CN103337832B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105281292B (en) * | 2014-06-13 | 2018-05-01 | 南京南瑞继保电气有限公司 | A kind of AC/DC Filters capacitor internal earth-fault protection method |
| CN105262047B (en) * | 2015-11-16 | 2017-12-26 | 国电南瑞南京控制系统有限公司 | A kind of railway power system protection device common program implementation method |
| CN106848996B (en) * | 2017-03-17 | 2020-02-21 | 云南电网有限责任公司 | Outlet protection method and device suitable for double-CPU structure |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1545176A (en) * | 2003-11-27 | 2004-11-10 | 南京南瑞继保电气有限公司 | High-voltage shunt reactor protecting method between turns |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012182956A (en) * | 2011-03-02 | 2012-09-20 | Funai Electric Co Ltd | Power supply circuit |
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2013
- 2013-06-26 CN CN201310260184.0A patent/CN103337832B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1545176A (en) * | 2003-11-27 | 2004-11-10 | 南京南瑞继保电气有限公司 | High-voltage shunt reactor protecting method between turns |
Non-Patent Citations (2)
| Title |
|---|
| 500kV枫泾换流站直流控制保护系统隐患分析;陈铁敏等;《电力与能源》;20110831;第32卷(第4期);第299-302页 * |
| 高压直流输电系统中交流滤波器小组开关失灵保护研究;余江等;《继电器》;20060401;第34卷(第7期);第10-12页，第17页 * |
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| CN103337832A (en) | 2013-10-02 |
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Granted publication date: 20160615 |