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Coordination control method of superconducting current limiter and direct-current circuit breaker

A technology of superconducting current limiter and DC circuit breaker, which is applied in the direction of emergency protection circuit device for limiting overcurrent/overvoltage, emergency protection device for automatic disconnection, circuit device, etc., and can meet the manufacturing requirements of DC circuit breaker High, large AC and DC currents, etc.

Active Publication Date: 2020-08-28
CHINA ENERGY ENG GRP GUANGDONG ELECTRIC POWER DESIGN INST CO LTD +1
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  • Application Information

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Problems solved by technology

[0003] However, in the above method, in the case of using a DC circuit breaker to isolate a DC line fault, the DC circuit breaker needs to break the AC and DC currents, which is too large, and the manufacturing requirements for the DC circuit breaker are too high

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  • Coordination control method of superconducting current limiter and direct-current circuit breaker
  • Coordination control method of superconducting current limiter and direct-current circuit breaker
  • Coordination control method of superconducting current limiter and direct-current circuit breaker

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Embodiment Construction

[0037] Various exemplary embodiments, features, and aspects of the present disclosure will be described in detail below with reference to the accompanying drawings. The same reference numbers in the figures denote functionally identical or similar components. While various aspects of the embodiments are shown in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

[0038] The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration." Any embodiment described herein as "exemplary" is not necessarily to be construed as superior or better than other embodiments.

[0039] In addition, in order to better illustrate the present disclosure, numerous specific details are given in the following specific implementation manners. It will be understood by those skilled in the art that the present disclosure may be practiced without some of the specific details. In some instances, methods, means, componen...

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Abstract

The invention relates to the technical field of direct-current power transmission, in particular to a coordination control method of a superconducting current limiter and a direct-current circuit breaker. The method is used in a coordination control system. The coordination control system comprises a direct-current circuit breaker, a superconducting current limiter connected with the direct-current circuit breaker in series and a direct-current power transmission grid system connected with the superconducting current limiter. When the direct-current transmission power grid system breaks down,the superconducting current limiter and the direct-current circuit breaker carry out coordination control over the magnitude of fault current, and the resistance value of the superconducting current limiter is in positive correlation with the magnitude of alternating current and direct current. According to the embodiment of the invention, the fault current can be reduced through the superconducting current limiter under the condition that the direct-current transmission power grid system has a fault, i.e., the requirement on the on-off current of the direct-current short-circuiter is reduced,so that the manufacturing requirement on the direct-current circuit breaker is reduced.

Description

technical field [0001] The present disclosure relates to the technical field of direct current transmission, in particular to a method for coordinated control of a superconducting current limiter and a direct current circuit breaker. Background technique [0002] In the DC transmission grid project, in order to solve the problem of DC line faults, DC circuit breakers are usually installed on both sides of the DC line. The DC circuit breaker can clear and isolate the faults in the DC transmission grid. [0003] However, in the above method, when a DC circuit breaker is used to isolate a DC line fault, the DC circuit breaker needs to break the AC and DC current too much, and the manufacturing requirements for the DC circuit breaker are too high. Contents of the invention [0004] In view of this, the present disclosure proposes a coordinated control method for a superconducting current limiter and a DC circuit breaker. The technical solutions include: [0005] According to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H9/02H02H3/087H02H3/02H02H7/26
CPCH02H9/023H02H3/087H02H3/025H02H7/268
Inventor 杨伟涛李清波潘靖李俊松金晶陈焕丽王愿陈荔郭金川彭冠炎梅红明
Owner CHINA ENERGY ENG GRP GUANGDONG ELECTRIC POWER DESIGN INST CO LTD
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