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Xiaofeng Jiang
Jieyang Power Supply Bureau of Guangdong Power Grid Co., Ltd., Jieyang 522000, China

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Journal article
Published: 13 November 2019 in Journal of Marine Science and Engineering
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For the study of transient overvoltage (TOV) in an offshore wind farm (OWF) collector system caused by switching off vacuum circuit breakers (VCBs), a simplified experimental platform of OWF medium-voltage (MV) cable collector system was established in this paper to conduct switching operation tests of VCB and obtain the characteristic parameters for VCB, especially dielectric strength parameters; also, the effectiveness of the VCB reignition model was verified. Then, PSCAD/EMTDC was used to construct the MV collector system of the OWF, and the effects of normal switching and fault switching on TOV amplitude, steepness, and the total number of reignition of the VCB were studied, respectively, with the experimental parameters and traditional parameters of dielectric strength of the VCB. The simulation results show that when the VCB is at the tower bottom, the overvoltage amplitude generated by the normal switching is the largest, which is 1.83 p.u., and the overvoltage steepness of the fault switching is the largest, up to 142 kV/μs. The overvoltage amplitude and steepness caused by switching off VCB at the tower bottom faultily with traditional parameters are about 2 and 1.5 times of the experimental parameters under the same operating condition.

ACS Style

Zikai Zhou; Yaxun Guo; Xiaofeng Jiang; Gang Liu; Wenhu Tang; Honglei Deng; Xiaohua Li; Ming Zheng. Study on Transient Overvoltage of Offshore Wind Farm Considering Different Electrical Characteristics of Vacuum Circuit Breaker. Journal of Marine Science and Engineering 2019, 7, 415 .

AMA Style

Zikai Zhou, Yaxun Guo, Xiaofeng Jiang, Gang Liu, Wenhu Tang, Honglei Deng, Xiaohua Li, Ming Zheng. Study on Transient Overvoltage of Offshore Wind Farm Considering Different Electrical Characteristics of Vacuum Circuit Breaker. Journal of Marine Science and Engineering. 2019; 7 (11):415.

Chicago/Turabian Style

Zikai Zhou; Yaxun Guo; Xiaofeng Jiang; Gang Liu; Wenhu Tang; Honglei Deng; Xiaohua Li; Ming Zheng. 2019. "Study on Transient Overvoltage of Offshore Wind Farm Considering Different Electrical Characteristics of Vacuum Circuit Breaker." Journal of Marine Science and Engineering 7, no. 11: 415.

Journal article
Published: 23 February 2018 in Energies
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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.

ACS Style

Gang Liu; Yaxun Guo; Yanli Xin; Lei You; Xiaofeng Jiang; Ming Zheng; Wenhu Tang. Analysis of Switching Transients during Energization in Large Offshore Wind Farms. Energies 2018, 11, 470 .

AMA Style

Gang Liu, Yaxun Guo, Yanli Xin, Lei You, Xiaofeng Jiang, Ming Zheng, Wenhu Tang. Analysis of Switching Transients during Energization in Large Offshore Wind Farms. Energies. 2018; 11 (2):470.

Chicago/Turabian Style

Gang Liu; Yaxun Guo; Yanli Xin; Lei You; Xiaofeng Jiang; Ming Zheng; Wenhu Tang. 2018. "Analysis of Switching Transients during Energization in Large Offshore Wind Farms." Energies 11, no. 2: 470.