Overvoltage Suppression Strategy for Sending AC Grid With High Penetration of Wind Power in the LCC-HVdc System Under Commutation Failure

被引:32
作者
Jin, Xiao [1 ]
Nian, Heng [1 ]
机构
[1] Zhejiang Univ, Coll Elect Engn, Hangzhou 310027, Peoples R China
基金
中国国家自然科学基金;
关键词
Voltage control; Wind turbines; Rectifiers; Wind power generation; Delays; Reactive power; Transient analysis; Commutation failure; delay compensation; high wind power penetration; line commutated converter (LCC) based high-voltage direct current (HVdc); overvoltage suppression strategy; sending ac grid; FAULT RIDE; VOLTAGE; ELIMINATION; TURBINE; DESIGN;
D O I
10.1109/TPEL.2021.3066641
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
With the increase of wind power installation capacity, the line commutated converter (LCC)-based high-voltage direct current (HVdc) transmission system is an effective scheme for long distance transmission of wind power. Commutation failure is a common fault for LCC-HVdc transmission system. During the commutation failure, the voltage of sending ac grid presents the "first decreased then increased" characteristic. In order to avoid the overvoltage under the commutation failure causing the wind power generation system (WPGS) to separate from the power grid, it is necessary to suppress the overvoltage of sending ac grid under commutation failure. This article quantitatively analyzes for the first time the transient voltage characteristics of the sending ac grid under commutation failure. The analysis indicates that the delay of the grid voltage detection part in the wind turbine is the significant influence factor on the overvoltage of sending ac grid. Based on the analysis results, this article proposes the delay compensation control strategy of WPGS to suppress the over voltage of the sending ac grid with high penetration of wind power under commutation failure. The effectiveness of the strategy is verified by simulation and control hardware in-loop experiment, and it is also verified that the strategy is also applicable for conventional low-voltage ride through faults, which shows that the control strategy is universal.
引用
收藏
页码:10265 / 10277
页数:13
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