Advanced control strategy and its controllable area for doubly fed wind farm integrated into power systems with VSC‐HVDC transmission under grid fault. Issue 13 (18th December 2017)

• Record Type: Journal Article
• Authors: Ouyang, Jinxin; Li, Mengyang; Tang, Ting; Zheng, Di; Yu, Rui; Zhang, Xi; Xiong, Xiaofu
• Is Part Of: Journal of engineering. Volume 2017:Issue 13(2017)
• Page Start: 1170
• Page End: 1175
• Publication Date: 2017-12-18
• Subjects: wind power plants -- HVDC power transmission -- asynchronous generators -- power grids -- frequency control -- power generation faults -- HVDC power convertors -- power generation control -- rotors -- power transmission control -- power transmission faults -- voltage‐source convertors -- power system dynamic stability; overvoltage -- frequency variation -- doubly fed induction generator -- DFIG -- frequency change -- frequency controllable margin -- rotor speed -- voltage source converter‐based high‐voltage direct current -- VSC‐HVDC -- rotor current -- fault ride‐through control strategy -- system collapse -- grid fault -- VSC‐HVDC transmission -- power systems -- doubly fed wind farm -- ascending frequency strategy; Engineering -- Periodicals; Engineering; Electronic journals; Periodicals; 620.005
• DOI: 10.1049/joe.2017.0513
• Languages: English
• ISSNs: 2051-3305

Abstract

Abstract : Doubly fed wind farms are usually integrated into power systems with voltage source converter‐based high‐voltage direct current (VSC‐HVDC). An overvoltage is produced in the DC side of VSC‐HVDC when the fault occurs at the grid side, which could cause the system collapse. Some methods are proposed to restrain the overvoltage by changing the frequency of wind farm. However, the impacts caused by the frequency variation on doubly fed induction generator (DFIG) have not been considered. Here, the transient characteristics of DFIG under frequency change were analysed. The frequency controllable margin of a DFIG was obtained according to the limit of rotor current and rotor speed. An ascending frequency strategy of a wind farm side voltage source converter was proposed with consideration of the controllable margin. The effectiveness of the proposed control strategy for fault ride‐through was verified by simulations in Matlab/Simulink.