Analysis of Excitation Inrush Current and Secondary Harmonic during 500kV AC Field Commissioning Test of ±800kV Shan to Wu UHVDC

Yu Xiaodong,Zhou Kunpeng,Cai Defu, Chen Rusi,Cao Kan, Li Yunfeng

2022 4th Asia Energy and Electrical Engineering Symposium (AEEES)（2022）

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摘要

In the process of 500kV AC field commissioning test of ±800kV Shan to Wu UHVDC transmission project, the transformer in the station will be switched on and out over 5 times. As a result, the flux density in the iron core will increase greatly with the combined action of remanence and system voltage if transformer is switched on immediately after removal. Due to the saturation magnetization charact...

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关键词

Voltage measurement,Surge protection,Switches,Transformer cores,Harmonic analysis,Transformers,Threshold voltage

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