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Title:
SERIES-PARALLEL CVT WIDEBAND MEASUREMENT SYSTEM BASED ON OPTICAL VOLTAGE SENSOR
Document Type and Number:
WIPO Patent Application WO/2024/046440
Kind Code:
A1
Abstract:
A series-parallel CVT wideband measurement system based on an optical voltage sensor (2-3), which system relates to the technical field of voltage measurement of power systems, and aims to solve the problem of limited wideband measurement. The measurement system comprises a CVT power frequency measurement portion (1) and an optical wideband measurement portion (2), wherein a low-voltage capacitor (2-1) of the optical wideband measurement portion (2) is connected in series between a low-voltage end of a medium-voltage capacitor (1-1-2) of a capacitive voltage divider (1-1) and a grounding end, and an optical voltage sensor (2-3) is connected in parallel to two ends of the low-voltage capacitor (2-1), so as to measure a wideband voltage signal under measurement. On the basis of ensuring the accuracy of conventional CVT power frequency measurement, the series-parallel CVT wideband measurement system enables a CVT to have a wideband measurement function.

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Inventors:
ZHANG GUOQING (CN)
YU WENBIN (CN)
MO CAIYUN (CN)
ZHANG YUXIN (CN)
ZUO JIE (CN)
Application Number:
PCT/CN2023/116305
Publication Date:
March 07, 2024
Filing Date:
August 31, 2023
Export Citation:
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Assignee:
HARBIN INST TECHNOLOGY (CN)
International Classes:
G01R19/00
Foreign References:
CN115389805A2022-11-25
CN216350893U2022-04-19
US20130076338A12013-03-28
CN103424594A2013-12-04
CN114243629A2022-03-25
KR100575244B12006-05-02
US20030164714A12003-09-04
US20080243413A12008-10-02
Other References:
DONG YIN, LI QIYING; LIU XIANGGUO; WAN BIN; YU WENBIN: "Study on Optical Monitoring Method of Transient Overvoltage Based on Capacitive Voltage Transformer", SHANDONG ELECTRIC POWER, vol. 50, no. 303, 25 February 2023 (2023-02-25), pages 57 - 64, XP093142846
Attorney, Agent or Firm:
BEIJING SHENGZHOU PATENT AGENCY (GENERAL PARTNERSHIP) (CN)
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