Title:
METHOD AND SYSTEM FOR MEASURING POWER FREQUENCY AND SUPERIMPOSED IMPULSE VOLTAGE WAVEFORMS
Document Type and Number:
WIPO Patent Application WO/2021/008336
Kind Code:
A1
Abstract:
A method and a system for measuring power frequency and impulse superimposed voltage waveforms, comprising: by means of a broadband voltage divider, converting a high-voltage power frequency voltage and a superimposed impulse voltage waveform into a low-voltage signal, and respectively outputting the low-voltage signal to a high sampling rate acquisition unit and a low sampling rate acquisition unit (201); by means of an input voltage calculation module, performing calculation on the low-voltage signals received by the high sampling rate acquisition unit to acquire the peak voltage and time parameters of the impulse voltage (202); by means of a power frequency voltage calculation module, performing calculation on the low-voltage signals received by the low sampling rate acquisition unit to acquire the peak voltage and frequency parameters of the power frequency voltage (203); by means of a trigger phase calculation module, superimposing the low-voltage signals received by the high sampling rate acquisition unit and the low sampling rate acquisition unit on a time axis and, at a trigger moment, calculating a trigger phase at the position of the high-voltage power frequency voltage cycle (204).
Inventors:
LONG ZHAOZHI (CN)
LI WENTING (CN)
ZHOU FENG (CN)
LEI MIN (CN)
LIU SHAOBO (CN)
FAN JIAWEI (CN)
WANG HAIYAN (CN)
YUE CHANGXI (CN)
LI WENTING (CN)
ZHOU FENG (CN)
LEI MIN (CN)
LIU SHAOBO (CN)
FAN JIAWEI (CN)
WANG HAIYAN (CN)
YUE CHANGXI (CN)
Application Number:
PCT/CN2020/098676
Publication Date:
January 21, 2021
Filing Date:
June 29, 2020
Export Citation:
Assignee:
CHINA ELECTRIC POWER RES INSTITUTE COMPANY LIMITED (CN)
International Classes:
G01R31/14
Foreign References:
| CN110398675A | 2019-11-01 | |||
| CN102608388A | 2012-07-25 | |||
| CN202903954U | 2013-04-24 | |||
| CN106526476A | 2017-03-22 | |||
| CN106124843A | 2016-11-16 | |||
| JPH02271267A | 1990-11-06 |
Other References:
ZHOU, KAI ET AL.: "Development of Test Device of Controllable Phase for Synergy of Power Frequency Voltage and Impulse Voltage", HIGH VOLTAGE ENGINEERING, vol. 44, no. 3, 31 March 2018 (2018-03-31), ISSN: 1003-6520, DOI: 20200907170633A
Attorney, Agent or Firm:
BEYOND ATTORNEYS AT LAW (CN)
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