CN101505044B - Three bus access method for DC ice melting current - Google Patents
Three bus access method for DC ice melting current Download PDFInfo
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- CN101505044B CN101505044B CN2009100971029A CN200910097102A CN101505044B CN 101505044 B CN101505044 B CN 101505044B CN 2009100971029 A CN2009100971029 A CN 2009100971029A CN 200910097102 A CN200910097102 A CN 200910097102A CN 101505044 B CN101505044 B CN 101505044B
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- ice
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- thawing
- melting
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Abstract
The invention relates to a triple bus-bar connecting method of DC thawing current, which comprises the following steps that: three DC output triple bus-bars of a DC thawing device are erected along an enclosing wall of an electric substation; connection knife switches GM arranged on a DC bus lead DC thawing current outputted by the DC thawing device to power distribution equipment near a leading-out terminal of each line which needs thawing; and the DC thawing device at least comprises a thawing power supply integrated SVC connected to the DC bus, six connection knife switches GM of the DC bus and a short-circuit knife switch GD of a DC side which form a DC thawing loop. The method has the characteristics that a cable trench space does not need occupying, the method can realize DC connection of all lines which need thawing of the electric substation and does not limit the size of DC, and the like.
Description
Technical field
What the present invention relates to is a kind of triple bus-bar cut-in method of DC ice melting current, belongs to the deicing technology of transmission line.
Background technology
The icing phenomenon of transmission line under the winter freezing sleety weather is a kind of natural calamity of serious threat power system safety and stability operation.Therefore particular study group or research institution have been set up in many countries and regions, carry out the exploration and the test of " removing ice of power transmission line technology ", and have obtained certain experience.The thermal ice-melting method is utilized various technology exactly, to increase current density or the alternate manner in the transmission line, makes lead self produce abundant heat, comes off to avoid covering of ice and snow to amass or existing icing is melted.Wherein study more direct current ice-melt, need be with the high-capacity direct current current delivery to needing on the DC ice-melting, traditional ice melting current cut-in method is to connect DC de-icing device and need DC ice-melting through cable at present.The shortcoming that above-mentioned connected mode exists is:
1. current-carrying capacity of cable is limited, direct current finite capacity system;
2. the need DC ice-melting is inserted limited amount system;
3. if need DC ice-melting more, higher to the cable trough space requirement.
Summary of the invention
The objective of the invention is to overcome the shortcoming of above-mentioned existence, and provide a kind of method simple, need not take the cable trough space, can DC ice melting current be inserted the triple bus-bar cut-in method of the DC ice melting current of many times need DC ice-melting.
The present invention solves the method that its technical problem adopts: this method is to set up the direct current output triple bus-bar of three DC de-icing devices along transformer station's enclosure wall, utilizes the connection plug-in strip GM that is provided with on the dc bus that the DC ice melting current of DC de-icing device output is caused near every power distribution equipment that needs the DC ice-melting leading-out terminal.
Described DC de-icing device comprises that at least access ice-melt power supply integration SVC and six dc buss on dc bus connect plug-in strip GM and DC side short circuit plug-in strip GD, and forms the DC ice melting loop.
The invention has the beneficial effects as follows, need not take the cable trough space, all need the direct current of DC ice-melting to insert can to realize transformer station, and to the unbounded size system of direct current.
Description of drawings
Fig. 1 is the principle schematic of DC ice melting current triple bus-bar cut-in method of the present invention.
Embodiment
To combine accompanying drawing and specific embodiment that the present invention is done detailed introduction below: method of the present invention is: set up the direct current output triple bus-bar of three DC de-icing devices along transformer station's enclosure wall, utilize the connection plug-in strip GM that is provided with on the dc bus that the DC ice melting current of DC de-icing device output is caused near every power distribution equipment that needs the DC ice-melting leading-out terminal.
Embodiment 1, sees shown in Figure 1ly, and it is the direct current output bus that sets up three DC de-icing devices along transformer station's enclosure wall; Described DC de-icing device comprises that at least access ice-melt power supply integration SVC and six dc buss on dc bus connect plug-in strip GM and DC side short circuit plug-in strip GD, and forms the DC ice melting loop.
Shown in Fig. 1, it utilizes 6 dc buss connection plug-in strips, and (GM1 ~ GM6) DC ice melting current with DC de-icing device output causes near every power distribution equipment the need DC ice-melting leading-out terminal.
The handover operation of the realization shown in Fig. 1 " ice-melt " mode of connection is summarized as follows:
Open and treat this substation bus bar of DC ice-melting I side switch (suppose originally to be connected on bus I and go up operation) and (offside) corresponding switch, make and treat that DC ice-melting is out of service;
Offside is treated the DC ice-melting short circuit;
Utilize 6 dc buss of dc output end to connect plug-in strip (GM1 ~ GM6) this transformer station side is treated that A, B, the C of DC ice-melting insert the positive and negative electrode of dc bus mutually respectively;
Break off DC de-icing device DC side short circuit plug-in strip GD, form the DC ice melting loop;
The output direct current that increases DC de-icing device gradually begins to treat DC ice-melting and carries out ice-melt to ice melting current;
In the time of need carrying out circuit three-phase equilibrium ice-melt; Gradually the deicing device output current is dropped to earlier and approach zero; 6 dc buss operating dc output end then connect plug-in strips, and (connected mode of adjustment A, B, C three-phase and dc bus of GM1 ~ GM6), the output current that increases deicing device more gradually gets final product to ice melting current.
After ice-melt finished, the operation that circuit recovers normal operation was the inverse process of aforesaid operations basically.All other routes all can be realized ice-melt through being similar to above-mentioned step.
The present invention need not take under the situation in cable trough space; All need the direct current of DC ice-melting to insert can to realize transformer station; And to the unbounded size system of direct current, the different opening and closing combined and instants that in the DC ice melting process, can connect plug-in strips through 6 dc buss that control system is controlled its dc output end realize that three-phases rotate the handover operation of balance ice-melt (like A+B//C → B+C//A → C+A//B).
Claims (2)
1. the triple bus-bar cut-in method of DC ice melting current; It is characterized in that this method is to set up the direct current output triple bus-bar of three DC de-icing devices along transformer station's enclosure wall, utilize the connection plug-in strip GM that is provided with on the dc bus that the DC ice melting current of DC de-icing device output is caused near every power distribution equipment that needs the DC ice-melting leading-out terminal.
2. the triple bus-bar cut-in method of DC ice melting current according to claim 1; It is characterized in that described DC de-icing device comprises that at least access ice-melt power supply integration SVC and six dc buss on dc bus connect plug-in strip GM and DC side short circuit plug-in strip GD, and form the DC ice melting loop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100971029A CN101505044B (en) | 2009-03-19 | 2009-03-19 | Three bus access method for DC ice melting current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100971029A CN101505044B (en) | 2009-03-19 | 2009-03-19 | Three bus access method for DC ice melting current |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101505044A CN101505044A (en) | 2009-08-12 |
| CN101505044B true CN101505044B (en) | 2012-03-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100971029A Expired - Fee Related CN101505044B (en) | 2009-03-19 | 2009-03-19 | Three bus access method for DC ice melting current |
Country Status (1)
| Country | Link |
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| CN (1) | CN101505044B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104078968A (en) * | 2014-07-10 | 2014-10-01 | 南京南瑞继保电气有限公司 | Direct-current transmission channel formed by transforming three-phase alternating current transmission cable |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101820140A (en) * | 2010-03-30 | 2010-09-01 | 南方电网技术研究中心 | Method for accessing DC ice melting device at substation |
| CN107181263A (en) * | 2016-12-12 | 2017-09-19 | 南京南瑞继保电气有限公司 | The DC ice melting of zero load test and SVC major loop and method to set up can be achieved |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101350510A (en) * | 2008-08-28 | 2009-01-21 | 浙江谐平科技股份有限公司 | DC heavy current ice melting device with static reactive power compensation function |
-
2009
- 2009-03-19 CN CN2009100971029A patent/CN101505044B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101350510A (en) * | 2008-08-28 | 2009-01-21 | 浙江谐平科技股份有限公司 | DC heavy current ice melting device with static reactive power compensation function |
Non-Patent Citations (1)
| Title |
|---|
| 饶宏等.南方电网直流融冰技术的研究与应用.《南方电网技术》.2008,第2卷(第6期),，第7-12页，附图1. * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104078968A (en) * | 2014-07-10 | 2014-10-01 | 南京南瑞继保电气有限公司 | Direct-current transmission channel formed by transforming three-phase alternating current transmission cable |
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| Publication number | Publication date |
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| CN101505044A (en) | 2009-08-12 |
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Owner name: STATE GRID ZHEJIANG ELECTRIC POWER COMPANY Effective date: 20131226 |
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Effective date of registration: 20131226 Address after: Hangzhou City, Zhejiang province 310012 GUCUI Road No. 68 Patentee after: Zhejiang Electric Power Design Institute Patentee after: State Grid Zhejiang Electric Power Company Address before: Hangzhou City, Zhejiang province 310012 GUCUI Road No. 68 Patentee before: Zhejiang Electric Power Design Institute |
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| C56 | Change in the name or address of the patentee | ||
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Address after: Hangzhou City, Zhejiang province 310012 GUCUI Road No. 68 Patentee after: Energy source in China construction group Zhejiang Province Power Design Institute Co., Ltd Patentee after: State Grid Zhejiang Electric Power Company Address before: Hangzhou City, Zhejiang province 310012 GUCUI Road No. 68 Patentee before: Zhejiang Electric Power Design Institute Patentee before: State Grid Zhejiang Electric Power Company |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120314 Termination date: 20160319 |
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| CF01 | Termination of patent right due to non-payment of annual fee |