METHOD AND APPARATUS FOR REALIZING BOOSTING-AND-INJECTION-TYPE HARMONIC CURRENT SOURCE

WIPO Patent Application WO/2023/231272

A1

A method and apparatus for realizing a boosting-and-injection-type harmonic current source. The method comprises: acquiring a first harmonic current determined by a harmonic generation apparatus under the control of a first preset algorithm (S101); then, adjusting the first harmonic current by using a boosting transformer, so as to obtain a second harmonic current under a high-voltage test condition (S102); and superimposing the second harmonic current under the high-voltage test condition on a fundamental current by means of a second preset algorithm, and performing a harmonic current switching test of a vacuum on-load tap-changer (S103). The amplitude of a harmonic current and a phase at which the harmonic current is superimposed on a fundamental current are adjusted, so as to realize that the slope of a zero point of a turning-on/off current meets the verification requirement of a harmonic current switching test of a vacuum on-load tap changer of a converter transformer.

ZHANG CHANGHONG (CN)
DENG JUN (CN)
LV JINZHUANG (CN)
XIA GULIN (CN)
ZHOU HAIBIN (CN)
ZHANG LIANG (CN)
XIE ZHICHENG (CN)
LI WEIGUO (CN)
PAN ZHICHENG (CN)
YANG XU (CN)
ZHANG JINYIN (CN)
WANG HAIJUN (CN)
CHEN WEI (CN)
LI SHIJIE (CN)
CHEN WEI (CN)
ZHANG YINING (CN)

PCT/CN2022/126127

December 07, 2023

October 19, 2022

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MAINTENANCE & TEST CENTRE CSG EHV POWER TRANS COMPANY (CN)

G01R31/327

CN114895176A	2022-08-12
CN112710879A	2021-04-27
CN112014727A	2020-12-01
CN101064479A	2007-10-31
JPS60185178A	1985-09-20

ADVANCE CHINA IP LAW OFFICE (CN)

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