Line protection method and related apparatus for flexible grounding system of power distribution network

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12237663
APP PUB NO 20230361552A1
SERIAL NO

18181482

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Abstract

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The embodiments of the present invention disclose a line protection method and a related apparatus for a flexible grounding system of a power distribution network. The method comprises outputting a first compensation voltage by a voltage source of a flexible grounding device of each line of a target power distribution network in the case where a ground fault occurs in the target power distribution network; starting to calculate the zero-sequence impedance of each line in real time by the zero-sequence impedance protection device; after the first compensation voltage is output for a first output duration, outputting a second compensation voltage; calculating the zero-sequence impedance of each line in real time by the line zero-sequence impedance protection device; determining a fault line by the zero-sequence impedance protection device, and cutting off the fault line to isolate the ground fault after a trip for a preset time delay.

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Patent Owner(s)

  • ELECTRIC POWER RESEARCH INSTITUTE OF YUNNAN POWER GRID CO., LTD.

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chai, Chenchao Yunnan, CN 2 0
Liu, Hongwen Yunnan, CN 11 1
Nie, Ding Yunnan, CN 6 1
Nie, Yongjie Yunnan, CN 4 1
Tang, Lijun Yunnan, CN 20 107
Yang, Jindong Yunnan, CN 8 0
Zhai, Shaolei Yunnan, CN 3 0
Zhang, Zhilei Yunnan, CN 2 0
Zhao, Xianping Yunnan, CN 6 2
Zhu, Quancong Yunnan, CN 2 0
Zou, Dexu Yunnan, CN 4 0

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