Analysis on Fault Ride-Through Capability Enhancement by UPFC for Asynchronous Wind Turbine Generators

doi:10.11930/j.issn.1004-9649.2013.8.35.4

Abstract

Abstract: It is an inevitable trend to compensate the reactive power deficits in wind farms during system failures with dynamic reactive power compensation devices. In this paper, a system simulation model including unified power flow controllers (UPFCs) used for wind farm access study is established based on asynchronous wind turbine generator model and the principle and control strategy of UPFC The comparison of fault ride-through capability is executed between the wind farms installed with SVC and UPFC. The reasons for wind turbine over-speed in transient process are analyzed. Moreover, the voltage, power and speed of the asynchronous wind turbine generator before and after faults are also studied. The simulation shows that, compared with SVC, the response of UPFC is faster, therefore, by using UPFC as the reactive power source, the transient stability of wind farms can be enhanced further.

Key words: asynchronous wind turbine, unified power flow controller (UPFC), fault ride-through, transient stability

CLC Number:

TM743

RAO Cheng-cheng, WANG Hai-yun, WU Han, ZHENG Hong, ZHOU Jing. Analysis on Fault Ride-Through Capability Enhancement by UPFC for Asynchronous Wind Turbine Generators[J]. Electric Power, 2013, 46(8): 35-39.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.2013.8.35.4

https://www.electricpower.com.cn/EN/Y2013/V46/I8/35

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