Torque Limit-based Inertial Control Method Based on Delayed Support for Primary Frequency Control of Wind Turbines  

作　　者：Wei Gu Zaiyu Chen Qun Li Minghui Yin Qiang Li Yun Zou 

机构地区：[1]School of Automation,Nanjing University of Science and Technology,Nanjing 210094,China [2]State Grid Jiangsu Electric Power Co.,Ltd.Research Institute,Nanjing 211103,China

出　　处：《Journal of Modern Power Systems and Clean Energy》2024年第2期561-570,共10页现代电力系统与清洁能源学报（英文）

基　　金：supported by the National Natural Science Foundation of China(No.51977111);the“Six Talent Peaks”High-level Talent Project in Jiangsu Province(No.XNY-025);the Special Fund of Jiangsu Province for Transformation of Scientific and Technological Achievements(No.BA2019045);the Jiangsu Qinglan Project。

摘　　要：To avoid the secondary frequency dip caused by the steep drop of the electrical power of wind turbines(WTs)at the end of frequency support stage,the torque limit-based iner-tial control(TLIC)method sets the power reference as a linear function of rotor speed,rather than the step form for the step-wise inertial control.However,the compensation effect on the frequency nadir(FN)caused by the load surge is weakened as the TLIC power is no longer in the step form.Specifically,the maximum point of the frequency response component(FRC)contributed by TLIC occurs earlier than the minimum point of FRC corresponding to the load surge,so that the FN cannot be adequately raised.Therefore,this paper first investigates the relation between the peak and nadir times of FRCs stimulated by the TLIC and load power.On this basis,with the compensation principle of matching the peak and nadir times of FRCs,the improved TLIC method based on delayed support is proposed.Finally,the effectiveness of the proposed method is validated via the experiments on the test bench of wind-integrated power system.

关 键 词：Wind turbine frequency response component torque limit inertial control delayed support 

分 类 号：TM315[电气工程—电机]