Influence of Converter DC Bus Overvoltage on Wind Turbine High Voltage Ride Through Capabilities

doi:10.11930/j.issn.1004-9649.201901035

Abstract

Abstract: Off-grid occurred in a wind farm caused by converter fault during field test of the DFIG (doubly feed induction generator) high voltage ride through (HVRT) capabilities. Through an in-depth analysis of the overvoltage of the wind turbine converter, a method was proposed for dynamic adjustment of converter DC bus reference voltage during wind turbine HVRT, which solved the off-grid problem of wind turbines caused by overvoltage protection of converter. Field test verified the effectiveness of the proposed method, which can provide useful experience for improving the wind turbine HVRT capabilities, and a reference for preventing the oscillation of renewable energy DC sending-end power system.

Key words: UHV DC, wind turbine, high voltage ride through, field test

ZHANG Guangru, BAI Runqing, ZHU Hongyi, YANG Yong, XU Honglei, MA Xiping, DONG Kaisong. Influence of Converter DC Bus Overvoltage on Wind Turbine High Voltage Ride Through Capabilities[J]. Electric Power, 2020, 53(11): 106-110,125.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.201901035

https://www.electricpower.com.cn/EN/Y2020/V53/I11/106

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