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A multi-break HVDC circuit breaker

A high-voltage DC and circuit breaker technology, applied in circuits, electrical components, electrical switches, etc., can solve the problems of small arc current and difficult to break high-voltage DC, and achieve the effect of small arc current, compact structure, and fast breaking time.

Active Publication Date: 2018-01-12
YANCHENG POWER SUPPLY CO STATE GRID JIANGSU ELECTRIC POWER CO +4
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the above-mentioned technical problems, the present invention discloses a multi-fracture high-voltage DC circuit breaker, which divides the total voltage at both ends of the circuit breaker by adopting the method of simultaneously breaking multiple fractures, so that the voltage between each port is relatively small, and at the same time When breaking, the arc current is small, and it is easier to break, which solves the technical problem that high-voltage direct current is not easy to break

Method used

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  • A multi-break HVDC circuit breaker
  • A multi-break HVDC circuit breaker
  • A multi-break HVDC circuit breaker

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[0031] The present invention will be further described in detail below in conjunction with the accompanying drawings, so that those skilled in the art can implement it with reference to the description.

[0032] It should be understood that terms such as "having", "comprising" and "including" as used herein do not entail the presence or addition of one or more other elements or combinations thereof.

[0033] Such as Figure 1-5 Shown is the first implementation form of the multi-break HVDC circuit breaker according to the present invention, which includes:

[0034] Interrupter arrays, such as figure 1 As shown, it is composed of several identical arc extinguishing chambers. In this embodiment, for the convenience of description, five arc extinguishing chambers are used, including arc extinguishing chambers 110, 120, 130, 140, and 150. The arc extinguishing chamber is a single-action arc extinguishing chamber, that is, there is only one moving contact and one static contact. ...

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Abstract

The invention discloses a multi-break high-voltage direct current breaker. The breaker comprises an arc extinguishing chamber array, linkage plates and a driving mechanism, wherein the arc extinguishing chamber array is formed through arranging several same arc extinguishing chambers; the linkage plates are arranged on two ends of the arc extinguishing chamber array in parallel, and the linkage plates are fixedly connected to moving conducting rods of the arc extinguishing chambers; the driving mechanism is connected to the linkage plates. By using the multi-break high-voltage direct current breaker, a technical problem that a high voltage direct current is not easy to break is solved; breaking performance is high and an effect breaking voltage grade of the direct current breaker is increased.

Description

technical field [0001] The invention belongs to the technical field of high-voltage circuit breakers, in particular to a multi-fracture high-voltage direct current circuit breaker. Background technique [0002] With the continuous and rapid development of my country's economy, the demand for electricity in the whole society is also increasing, and the capacity of the power grid continues to expand, forcing the voltage level to continue to increase. At present, most high-voltage transmission lines in China directly use 126kV voltage level, and high-voltage circuit breakers get a lot of use. With the continuous increase of electricity demand, considering the natural geographical conditions of our country and the distribution characteristics of energy and load centers, the ultra-long-distance and ultra-large-capacity power transmission becomes inevitable. In order to reduce the loss of transmission lines and save precious land resources, an economical and efficient transmission...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H9/30
CPCH01H9/30
Inventor 张怡丁贵军刘建民管为民
Owner YANCHENG POWER SUPPLY CO STATE GRID JIANGSU ELECTRIC POWER CO
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