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Title:
ELECTRIC ARC DETECTION APPARATUS, ELECTRIC ARC FAULT PROTECTION APPLIANCE, AND METHOD FOR MANUFACTURING ELECTRIC ARC DETECTION APPARATUS
Document Type and Number:
WIPO Patent Application WO/2021/051401
Kind Code:
A1
Abstract:
Provided are an electric arc detection apparatus, an electric arc fault protection appliance, and a method for manufacturing an electric arc detection apparatus. The electric arc detection apparatus comprises: a frequency sweep filtering circuit (132), configured to receive at least one signal of a voltage signal or a current signal of an electric power system and generate multiple signals of multiple frequency bands on the basis of the at least one signal; and an electric arc determining means (140), coupled to the frequency sweep filtering circuit to receive the multiple signals of the multiple frequency bands and determine generation of an electric arc on the basis of at least one signal of the multiple signals. Signals of multiple frequency bands are obtained by means of frequency sweep filtering, so that error detection caused by noise signals can be avoided or reduced and the anti-interference capability is improved.

Inventors:
YI XING (CN)
DU FENG (CN)
CHEN WEIGANG (CN)
FU LING (CN)
Application Number:
PCT/CN2019/107033
Publication Date:
March 25, 2021
Filing Date:
September 20, 2019
Export Citation:
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Assignee:
SIEMENS AG (DE)
SIEMENS LTD CHINA (CN)
International Classes:
G01R31/00; H01H33/26
Foreign References:
US20190363530A12019-11-28
US20190363530A12019-11-28
CN104714089A2015-06-17
CN102854426A2013-01-02
CN110007197A2019-07-12
EP0818076A11998-01-14
Attorney, Agent or Firm:
KANGXIN PARTNERS, P.C. (CN)
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