DC circuit breaker energy supply system and control method and device thereof

A DC circuit breaker and energy supply technology, applied in emergency power protection and other directions, can solve the problems of large size and high design cost, and achieve the effect of reducing the system volume, reducing the size of the magnetic core, and reducing the system cost

Inactive Publication Date: 2018-05-15
GLOBAL ENERGY INTERCONNECTION RES INST CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Therefore, the technical problem to be solved by the present invention is that the existing DC circuit breaker energy supply system has a large volume and high design cost

Method used

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  • DC circuit breaker energy supply system and control method and device thereof
  • DC circuit breaker energy supply system and control method and device thereof
  • DC circuit breaker energy supply system and control method and device thereof

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Embodiment Construction

[0037] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0038] An embodiment of the present invention provides a DC circuit breaker energy supply system, such as figure 1 shown, including:

[0039] Resonant capacitor 103, the input end of which is connected to the low-frequency AC voltage source 101 through the rectifier circuit 102, and the output end is connected to the resonant inductor 105 through the switch circuit 104, when the switch circuit 104 is turned on, the resonant capacitor 103 and the resonant inductor 105 A resonant current is generated to convert...

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Abstract

The invention provides a DC circuit breaker energy supply system and a control method and device thereof. The energy supply system comprises a resonant capacitor of which the input end is connected with a low-frequency AC voltage source through a rectification circuit and the output end is connected with a resonant inductor through a switching circuit, wherein the resonant capacitor and the resonant inductor generate resonant current when the switching circuit is conducted and low-frequency alternating current is converted into high-frequency alternating current to be outputted; and an energytaking magnet ring which sleeves on an energy supply cable with the output end connected with a load for converting the high-frequency alternating current into the voltage meeting the load requirements to supply power to the load. Compared with the low-frequency energy supply mode, the low-frequency alternating current is converted into high-frequency alternating current to be outputted so that the size of the energy taking magnet ring can be reduced under the condition of meeting the same power supply requirement and then the size of the high voltage DC circuit breaker system and the cost ofthe system can be reduced.

Description

technical field [0001] The invention relates to the field of electric power protection, in particular to a DC circuit breaker energy supply system and a control method and device thereof. Background technique [0002] Due to its good characteristics, the DC transmission system based on flexible DC transmission has become one of the hotspots in the power field, and will also be an important part of the future grid construction. Due to the relatively low damping of the DC system, the rising rate of the fault current in the DC system is relatively fast. In order to ensure safety, the fault current needs to be cut off within milliseconds. One of the core equipment; compared with mechanical and solid-state high-voltage DC circuit breakers, hybrid high-voltage DC circuit breakers have the advantages of high-speed breaking and low-power operation, and have become the mainstream technology in the industry at this stage. Hybrid high-voltage DC circuit breakers It is composed of ultr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H1/06
CPCH02H1/06
Inventor 贺之渊王新颖魏晓光庞辉高冲张升王成昊刘远陆翌裘鹏童凯
Owner GLOBAL ENERGY INTERCONNECTION RES INST CO LTD
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