Title:
HIGH-PRECISION MEASUREMENT METHOD AND SYSTEM FOR VOLTAGE TRANSFORMER
Document Type and Number:
WIPO Patent Application WO/2023/029716
Kind Code:
A1
Abstract:
A high-precision measurement method and system for a voltage transformer. The method comprises the following steps: acquiring a system error of a measurement system (S101); performing series resonance on the measurement system in a low-voltage frequency-modulation resonance manner, so as to obtain a resonant frequency point (S102); calculating a resonant inductance according to the resonant frequency point (S103); adjusting a resonant device according to the resonant inductance, so as to boost the power-frequency resonance of the measurement system (S104); when the power-frequency resonance of the measurement system is boosted, acquiring precision data of a voltage transformer under test (S105); and according to the system error and the precision data, measuring the precision of the voltage transformer under test (S106). By means of introducing a system error, the precision of a voltage transformer can be accurately measured in a long-distance and strong-interference environment, such that losses caused by misjudgment are avoided; moreover, check boosting is performed by using a method of first frequency-modulation resonance and then induction-modulation resonance, such that the device weight and volume can be effectively reduced, thereby improving the field check level and the working efficiency.
Inventors:
DENG XINGHONG (CN)
HE JING (CN)
LI GANG (CN)
XU FENG (CN)
MA DING (CN)
OU XIQIAO (CN)
HUANG TAO (CN)
HE JING (CN)
LI GANG (CN)
XU FENG (CN)
MA DING (CN)
OU XIQIAO (CN)
HUANG TAO (CN)
Application Number:
PCT/CN2022/103131
Publication Date:
March 09, 2023
Filing Date:
June 30, 2022
Export Citation:
Assignee:
CHINA NUCLEAR POWER ENG CO LTD (CN)
CHINA GENERAL NUCLEAR POWER (CN)
CGN POWER CO LTD (CN)
CHINA GENERAL NUCLEAR POWER (CN)
CGN POWER CO LTD (CN)
International Classes:
G01R35/02
Foreign References:
| CN113866703A | 2021-12-31 | |||
| CN102928705A | 2013-02-13 | |||
| CN102854486A | 2013-01-02 | |||
| CN101339234A | 2009-01-07 | |||
| CN107340490A | 2017-11-10 | |||
| CN105591546A | 2016-05-18 | |||
| US20050212506A1 | 2005-09-29 |
Other References:
LUO CHUAN-XIAN , XU ZHAO-YANG , SHEN HONG-TAO , SHI LUN: "The Error Test of On-Site 500kV Voltage Transformer", ELECTRICAL MEASUREMENT & INSTRUMENTATION, vol. 41, no. 468, 25 December 2004 (2004-12-25), pages 21 - 24, XP093041391, ISSN: 1001-1390
Attorney, Agent or Firm:
SHENZHEN REFINED INTELLECTUAL PROPERTY OFFICE (GENERAL PARTNERSHIP) (CN)
Download PDF: