Analysis of Switching Transients during Energization in Large Offshore Wind Farms

Gang Liu, Yaxun Guo, Yanli Xin, Lei You, Xiaofeng Jiang, Ming Zheng and Wenhu Tang
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Gang Liu: School of Electric Power Engineering, South China University of Technology, Guangzhou 510640, China
Yaxun Guo: School of Electric Power Engineering, South China University of Technology, Guangzhou 510640, China
Yanli Xin: School of Electric Power Engineering, South China University of Technology, Guangzhou 510640, China
Lei You: School of Electric Power Engineering, South China University of Technology, Guangzhou 510640, China
Xiaofeng Jiang: School of Electric Power Engineering, South China University of Technology, Guangzhou 510640, China
Ming Zheng: Guangdong Electric Power Design Institute Co. Ltd. of China Energy Engineering Group, Guangzhou 510663, China
Wenhu Tang: School of Electric Power Engineering, South China University of Technology, Guangzhou 510640, China

Energies, 2018, vol. 11, issue 2, 1-13

Abstract: In order to study switching transients in an offshore wind farm (OWF) collector system, we employ modeling methods of the main components in OWFs, including vacuum circuit breakers (VCBs), submarine cables, and wind turbine transformers (WTTs). In particular, a high frequency (HF) VCB model that reflects the prestrike characteristics of VCBs was developed. Moreover, a simplified experimental system of an OWF electric collection system was set up to verify the developed models, and a typical OWF medium voltage (MV) cable collection system was built in PSCAD/EMTDC based on the developed models. Finally, we investigated the influences of both the initial closing phase angle of VCBs and typical system operation scenarios on the amplitude and steepness of transient overvoltages (TOVs) at the high-voltage side of WTTs.

Keywords: vacuum circuit breaker (VCB); switching transient; prestrikes; high frequency; PSCAD/EMTDC; offshore wind farm (OWF) (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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