CN201229893Y - A converting switch circuit construction for high voltage DC transmission - Google Patents
A converting switch circuit construction for high voltage DC transmission Download PDFInfo
- Publication number
- CN201229893Y CN201229893Y CNU2008200295031U CN200820029503U CN201229893Y CN 201229893 Y CN201229893 Y CN 201229893Y CN U2008200295031 U CNU2008200295031 U CN U2008200295031U CN 200820029503 U CN200820029503 U CN 200820029503U CN 201229893 Y CN201229893 Y CN 201229893Y
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- direct current
- switch circuit
- loop
- high voltage
- cut
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Abstract
The utility model discloses a change-over switch circuit structure used for high-voltage direct current power transmission and is characterized by comprising a cut-off device arranged on a neutral bus of a convertor station, a group of lightning arresters arranged on an insulating platform and an LC serial branch; the LC serial branch is connected with the cut-off device in parallel to form a first loop; and the LC serial branch is connected with the lightning arresters in parallel to form a second loop. As a passive subsidiary loop is adopted, the utility model excites oscillating current by arc voltage of the cut-off device, leads the current flowing through the cut-off device to cross zero and realizes the conversion of the direct current. The utility model belongs to a passive direct current change-over switch circuit and has the advantages of little composite equipment, simple structure and more reliable operation and the like compared with the active direct current change-over switch circuit.
Description
Technical field
The utility model relates to a kind of high voltage DC power transmission converter station switching circuit structure.Be particularly related to a kind of direct current conversion switch circuit structure that direct current is transformed into another loop in parallel from a loop.
Background technology:
China has now built up the DC engineering of a plurality of ± 500kV and following electric pressure, carry out at present ± construction of 800kV extra-high voltage direct-current engineering, the direct current transportation technology has obtained development at full speed in China, and 10 years from now on China is several remote DC transmission engineering of planning construction also.The direct current change over switch is the requisite dc fields equipment of each distant-range high voltage direct current transmission engineering, and each bipolar DC engineering need dispose 8 direct current changeover switch devices usually.Now built up ± the used direct current change over switch of 500kV high voltage DC engineering is by the external Siemens and the supply of material of Sweden ABB AB.
Summary of the invention
In order to make bipolar end-to-end high voltage direct current transmission project flexible operation, particularly improve the availability factor of DC transmission system, the utility model provides a kind of direct current conversion switch circuit structure that can realize direct current is transformed into from a loop another loop in parallel.
In order to reach above purpose, the utility model takes following technical scheme to be achieved:
A kind of high voltage direct current transmission conversion switch circuit structure, its architectural feature is, comprise a breaking device that is installed on the current conversion station neutral bus, one a group of lightning arrester and a LC series arm that is installed on the insulated platform, this LC series arm formation in parallel first loop with breaking device; LC series arm formation in parallel second loop with lightning arrester.
In the such scheme, described LC series arm is composed in series by capacitor and reactor; Described breaking device is made of a single phase alternating current (A.C.) circuit breaker or two single phase alternating current (A.C.) circuit breaker series connection.
The utility model has the advantages that, adopt passive subsidiary loop, the arc voltage by breaking device evokes oscillating current, makes current over-zero, realizes the conversion of direct current, belongs to a kind of passive direct current conversion switch circuit.Compare circuit with active type direct current change over switch, have characteristics such as component devices is few, simple in structure, operation is more reliable.Can on the current conversion station neutral bus, install the direct current change over switch of a plurality of these circuit, change direct current system operation wiring mode in case of necessity, thereby can guarantee the direct current transmission power to greatest extent.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is a structure chart of the present utility model.Among the figure: 1, insulated platform; 2, lightning arrester; 3, second loop; 4, first loop; 5, breaking device; 6, current conversion station neutral bus.
Embodiment
As shown in Figure 1, direct current conversion switch circuit structure of the present utility model, comprise the breaking device 5 that is serially connected on the current conversion station neutral bus 6, it can be made of a single phase alternating current (A.C.) circuit breaker or two single phase alternating current (A.C.) circuit breaker series connection, a lightning arrester 2 and a LC series arm that is arranged on the insulated platform 1, it is composed in series by a capacitor C and a reactor L.When the fracture contact of breaking device 5 separates, produce electric arc, arc voltage evokes oscillating current in first loop 4 that breaking device 5 and LC series arm constitute, when oscillating current and the electric current stack of flowing through breaking device make breaking device current over-zero, the arc extinction of incision position.Behind the arc extinction.Current conversion station neutral bus direct current is transferred to another DC loop (being metallic return) in parallel.
Claims (3)
1, a kind of high voltage direct current transmission conversion switch circuit structure, it is characterized in that, comprise a breaking device that is installed on the current conversion station neutral bus, one a group of lightning arrester and a LC series arm that is installed on the insulated platform, this LC series arm formation in parallel first loop with breaking device; LC series arm formation in parallel second loop with lightning arrester.
2, high voltage direct current transmission as claimed in claim 1 conversion switch circuit structure is characterized in that, described LC series arm is composed in series by capacitor and reactor.
3, high voltage direct current transmission as claimed in claim 1 or 2 conversion switch circuit structure is characterized in that, described breaking device is made of a single phase alternating current (A.C.) circuit breaker or two single phase alternating current (A.C.) circuit breaker series connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200295031U CN201229893Y (en) | 2008-06-30 | 2008-06-30 | A converting switch circuit construction for high voltage DC transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200295031U CN201229893Y (en) | 2008-06-30 | 2008-06-30 | A converting switch circuit construction for high voltage DC transmission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201229893Y true CN201229893Y (en) | 2009-04-29 |
Family
ID=40634834
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200295031U Expired - Lifetime CN201229893Y (en) | 2008-06-30 | 2008-06-30 | A converting switch circuit construction for high voltage DC transmission |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201229893Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102420084A (en) * | 2011-08-25 | 2012-04-18 | 许继集团有限公司 | Self-powered type direct-current quick circuit breaker |
| CN102780201A (en) * | 2011-05-12 | 2012-11-14 | Abb技术有限公司 | Circuit and method for interrupting a current flow in a DC current path |
| CN102780200A (en) * | 2011-05-12 | 2012-11-14 | Abb技术有限公司 | Circuit arrangement and method for interrupting a current flow in a DC current path |
| CN103430414A (en) * | 2011-03-22 | 2013-12-04 | 西门子公司 | Switch for a transmission path for high-voltage direct current |
| CN103762547A (en) * | 2014-01-08 | 2014-04-30 | 西安交通大学 | Modular high-voltage vacuum direct current on-off device based on artificial zero crossing |
| CN104538239A (en) * | 2014-11-20 | 2015-04-22 | 平高集团有限公司 | Nozzle, arc chute using nozzle, breaker and change-over switch |
| CN106486965A (en) * | 2016-11-03 | 2017-03-08 | 中国电力科学研究院 | A kind of dc circuit breaker of self-excited oscillation type and its control method |
-
2008
- 2008-06-30 CN CNU2008200295031U patent/CN201229893Y/en not_active Expired - Lifetime
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103430414A (en) * | 2011-03-22 | 2013-12-04 | 西门子公司 | Switch for a transmission path for high-voltage direct current |
| CN103430414B (en) * | 2011-03-22 | 2016-09-07 | 西门子公司 | Switch for transmission path for high-voltage direct current |
| US9240680B2 (en) | 2011-03-22 | 2016-01-19 | Siemens Aktiengesellschaft | Switch for a transmission path for high-voltage direct current |
| CN102780201B (en) * | 2011-05-12 | 2016-03-16 | Abb技术有限公司 | For interrupting circuit and the method for current flowing in DC current path |
| CN102780200A (en) * | 2011-05-12 | 2012-11-14 | Abb技术有限公司 | Circuit arrangement and method for interrupting a current flow in a DC current path |
| CN102780200B (en) * | 2011-05-12 | 2016-01-20 | Abb技术有限公司 | For interrupting circuit arrangement and the method for current flowing in DC current path |
| CN102780201A (en) * | 2011-05-12 | 2012-11-14 | Abb技术有限公司 | Circuit and method for interrupting a current flow in a DC current path |
| CN102420084A (en) * | 2011-08-25 | 2012-04-18 | 许继集团有限公司 | Self-powered type direct-current quick circuit breaker |
| CN103762547A (en) * | 2014-01-08 | 2014-04-30 | 西安交通大学 | Modular high-voltage vacuum direct current on-off device based on artificial zero crossing |
| WO2015103857A1 (en) * | 2014-01-08 | 2015-07-16 | 西安交通大学 | Modular high-voltage vacuum direct-current breaking device based on artificial zero-crossing |
| CN104538239A (en) * | 2014-11-20 | 2015-04-22 | 平高集团有限公司 | Nozzle, arc chute using nozzle, breaker and change-over switch |
| CN104538239B (en) * | 2014-11-20 | 2017-06-06 | 平高集团有限公司 | A kind of nozzle and arc-chutes, breaker, the transfer switch unit using the nozzle |
| CN106486965A (en) * | 2016-11-03 | 2017-03-08 | 中国电力科学研究院 | A kind of dc circuit breaker of self-excited oscillation type and its control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090429 |