Coordinated Control Method of Superconducting Current Limiter and DC Circuit Breaker

A technology of superconducting current limiter and DC circuit breaker, which is applied in emergency protection circuit devices for limiting overcurrent/overvoltage, emergency protection devices for automatic disconnection, circuit devices, etc., and can solve the problem of large AC and DC currents, DC circuit breaker manufacturing requirements and other issues

Active Publication Date: 2022-04-19
CHINA ENERGY ENG GRP GUANGDONG ELECTRIC POWER DESIGN INST CO LTD +1
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  • Claims
  • 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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  • Coordinated Control Method of Superconducting Current Limiter and DC Circuit Breaker
  • Coordinated Control Method of Superconducting Current Limiter and DC Circuit Breaker
  • Coordinated Control Method of Superconducting Current Limiter and DC Circuit Breaker

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Embodiment Construction

[0037] The following will be described in detail with reference to the accompanying drawings various exemplary embodiments, features and aspects of the present disclosure. The same reference numerals in the drawings represent components of the same or similar functionality. Although various aspects of the embodiment are shown in the accompanying drawings, it is not necessary to draw the drawings in proportion unless otherwise indicated.

[0038] The word "exemplary" dedicated herein means "used as an example, embodiment, or illustrative". Any embodiment illustrated herein as "exemplary" does not have to be construed as superior or better than other embodiments.

[0039] Further, in order to better illustrate the present disclosure, numerous specific details are given in the following specific embodiments. Those skilled in the art should appreciate that, without certain specific details, this disclosure may likewise be implemented. In some examples, the methods, means, components a...

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Abstract

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. The method is used in a coordinated control system, and the coordinated control system includes a DC circuit breaker, a superconducting current limiter connected in series with the DC circuit breaker, and a DC transmission grid system connected to the superconducting current limiter. When the DC transmission grid system fails, the superconducting current limiter and the DC circuit breaker coordinate and control the magnitude of the fault current, and the resistance of the superconducting current limiter is positively correlated with the magnitude of the AC and DC current relation. The embodiments of the present disclosure can reduce the fault current through the superconducting current limiter in the event of a fault in the DC transmission grid system, that is, reduce the requirement for the breaking current of the DC circuit breaker, thereby reducing the manufacturing requirements for the DC circuit breaker.

Description

Technical field [0001] The present disclosure relates to the field of HVDC transmission technology, in particular to a superconducting current limiter and a DC circuit breaker coordinated control method. Background [0002] In the DC transmission power grid project, in order to solve the problem of DC line failure, DC circuit breakers are usually installed on both sides of the DC line, and the DC circuit breaker can clear and isolate the fault in the DC transmission grid. [0003] However, in the above method, in the case of isolating DC line faults using DC circuit breakers, dc circuit breakers need to break AC and DC currents that are too large, and the manufacturing requirements of DC circuit breakers are too high. Contents of the Invention [0004] In view of this, the present disclosure proposes a coordinated control method of superconducting current limiter and DC circuit breaker. The technical solutions include: [0005] According to one aspect of the present disclosure,...

Claims

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Application Information

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Patent Type & Authority Patents(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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