Title:
TEST SYSTEM FOR ANTI-DC COMPONENT AND EVEN-ORDER HARMONIC OF CURRENT TRANSFORMER
Document Type and Number:
WIPO Patent Application WO/2017/045488
Kind Code:
A1
Abstract:
A test system for an anti-DC component and an even-order harmonic of a current transformer. The test system comprises a big current generator, a standard current transformer (8), a half-wave rectification apparatus, an impedance matching apparatus, and a half-wave transformer calibrator (9). A primary side of the testing system comprises a first half-wave rectification apparatus (1), a second half-wave rectification apparatus (2), and a first impedance matching apparatus (5), the first half-wave rectification apparatus (1) and the first impedance matching apparatus (5) in series connection being connected in parallel to the second half-wave rectification apparatus (2) and a tested current transformer (7) that are also connected in series. A secondary side of the test system comprises a third half-wave rectification apparatus (3), a fourth half-wave rectification apparatus (4), and a second impedance matching apparatus (6), the fourth half-wave rectification apparatus (4), the second impedance matching apparatus (6), and a standard current transformer (8) being connected in series to the third half-wave rectification apparatus (3), and the big current generator being connected to the standard current transformer (8).
Inventors:
ZHANG PENGHE (CN)
XUE YANG (CN)
XU YINGHUI (CN)
SHI ERWEI (CN)
ZHAO BING (CN)
PENG CHUNING (CN)
QIN CHENGLIN (CN)
ZHAO YUE (CN)
TAN CHEN (CN)
CHENG DA (CN)
WANG YATAO (CN)
YUAN XIANGYU (CN)
XUE YANG (CN)
XU YINGHUI (CN)
SHI ERWEI (CN)
ZHAO BING (CN)
PENG CHUNING (CN)
QIN CHENGLIN (CN)
ZHAO YUE (CN)
TAN CHEN (CN)
CHENG DA (CN)
WANG YATAO (CN)
YUAN XIANGYU (CN)
Application Number:
PCT/CN2016/092115
Publication Date:
March 23, 2017
Filing Date:
July 28, 2016
Export Citation:
Assignee:
CHINA ELECTRIC POWER RES INST (CN)
STATE GRID CORP CHINA (CN)
STATE GRID CORP CHINA (CN)
International Classes:
G01R35/02
Foreign References:
| CN102520382A | 2012-06-27 | |||
| CN103675749A | 2014-03-26 | |||
| CN102928802A | 2013-02-13 | |||
| CN104237837A | 2014-12-24 | |||
| CN104569904A | 2015-04-29 | |||
| CN102156273A | 2011-08-17 | |||
| CN101533082A | 2009-09-16 | |||
| US8421444B2 | 2013-04-16 |
Attorney, Agent or Firm:
CHINA PAT INTELLECTUAL PROPERTY OFFICE (CN)
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