JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE) ›› 2017, Vol. 47 ›› Issue (4): 110-116.doi: 10.6040/j.issn.1672-3961.0.2016.218

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Remote testing on low voltage ride through of offshore wind turbines

XIE Caike1, JIANG Ziming1, LIU Yutian1*, WANG Chunyi2   

  1. 1. School of Electrical Engineering, Shandong University, Jinan 250061, Shandong, China;
    2. State Grid Shandong Electric Power Company, Jinan 250001, Shandong, China
  • Received:2016-06-13 Online:2017-08-20 Published:2016-06-13

Abstract: In order to cope with the long-distance submarine cable effects on low voltage ride through(LVRT)remote testing for offshore wind turbines(WTs), the LVRT testing model was built and the method for remote testing on LVRT of offshore WTs was proposed according to the existing LVRT testing technique and standards based on the outlet of WTs. The difference between near and remote testing in both steady and transient situations was analyzed according to the existing devices and method, which concluded that the mutual influence of current limiting reactance and cable heightened the voltage of the outlet, prolonged the transient process and increased harmonic component. The circuit breaker of original device was replaced with electronic switches in order to control the operation of reactance accurately. The operation sequence of the reactance was improved to make the action intervals of time between the current-limiting reactance and short-circuit reactance trended to 0. By doing this, the mutual influence of current-limiting reactance and cable could be avoided. A simulation was put forth to verify the effectiveness of the improved process and to provide supports for development of remote LVRT testing equipment at the same time.

Key words: offshore wind turbines, submarine cable, limiting reactance, remote testing, LVRT, operation sequcence

CLC Number: 

  • TM315
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[1] ZHAO Weiguo, JIANG Zimin, LIU Yutian, WANG Chunyi. Remote testing on harmonic adaptability of offshore wind turbines [J]. JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2016, 46(4): 125-130.
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