A Smart Fault-Tackling Strategy Based on PFTE for AC Three-Phase-to-Ground Faults in the Multi-Terminal HVDC Wind Power Integration System: Further Foundings

Chuan Du, Qingzhi Zhang and Shuai Cao
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Chuan Du: College of Mechanical and Electrical Engineering, Xinxiang University, Xinxiang 453003, China
Qingzhi Zhang: College of Mechanical and Electrical Engineering, Xinxiang University, Xinxiang 453003, China
Shuai Cao: Dispatch Control Center, State Grid Corporation of China (SGCC), Beijing 100031, China

Energies, 2022, vol. 15, issue 3, 1-22

Abstract: This paper describes a smart fault tackling strategy based on power flow transfer entropy (PFTE) for AC three-phase-to-ground (TPG) faults in the multi-terminal HVDC (MTDC) wind power integration system. The fault characteristics and transient energy transfer of different positions and properties are analyzed. Then, a double integral discrimination method based on PFTE is proposed to further distinguish the fault property. Considering the power flow balance, an adaptive coordination strategy of wind farms and energy dissipation resistors is proposed to deal with different AC faults. Finally, a smart fault-tackling strategy based on PFTE for AC three-phase-to-ground (TPG) faults in the MTDC wind power integration system is proposed. Under the proposed smart fault-tackling strategy, the MTDC wind power integration system achieves uninterrupted operation during any AC TPG fault at the receiving end. The experiment results confirm the applicability of the proposed fault-tackling strategy.

Keywords: power flow transfer entropy (PFTE); multi-terminal HVDC (MTDC) grid; AC fault location; AC fault property identification (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: 2022
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