Power Quality Improvement and LVRT Capability Enhancement of Wind Farms by Means of an Inductive Filtering Method

Yanjian Peng, Yong Li, Zhisheng Xu, Ming Wen, Longfu Luo, Yijia Cao and Zbigniew Leonowicz
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Yanjian Peng: College of Electrical and Information Engineering, Hunan University, Changsha 410082, China
Yong Li: College of Electrical and Information Engineering, Hunan University, Changsha 410082, China
Zhisheng Xu: Hunan Electrical Power Corporation Economical & Technical Research, Changsha 410004, China
Ming Wen: Hunan Electrical Power Corporation Economical & Technical Research, Changsha 410004, China
Longfu Luo: College of Electrical and Information Engineering, Hunan University, Changsha 410082, China
Yijia Cao: College of Electrical and Information Engineering, Hunan University, Changsha 410082, China
Zbigniew Leonowicz: Department of Electrical Engineering, Wroclaw University of Technology, Wroclaw 50370, Poland

Energies, 2016, vol. 9, issue 4, 1-18

Abstract: Unlike the traditional method for power quality improvement and low-voltage ride through (LVRT) capability enhancement of wind farms, this paper proposes a new wind power integrated system by means of an inductive filtering method, especially if it contains a grid-connected transformer, a static synchronous compensator (STATCOM) and fully-tuned (FT) branches. First, the main circuit topology of the new wind power integrated system is presented. Then, the mathematical model is established to reveal the mechanism of harmonic suppression and the reactive compensation of the proposed wind power integrated system, and then the realization conditions of the inductive filtering method is obtained. Further, the control strategy of STATCOM is introduced. Based on the measured data for a real wind farm, the simulation studies are carried out to illustrate the performance of the proposed new wind power integrated system. The results indicate that the new system can not only enhance the LVRT capability of wind farms, but also prevent harmonic components flowing into the primary (grid) winding of the grid-connected transformer. Moreover, since the new method can compensate for reactive power in a wind farm, the power factor at the grid side can be improved effectively.

Keywords: wind farm; inductive filtering method; transformer; static synchronous compensator (STATCOM); low-voltage ride through (LVRT); harmonic current; power quality (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: 2016
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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