Stepwise Inertial Control to Prevent Over-Deceleration
A stepwise inertial control (SIC) scheme of a wind turbine generator (WTG) instantly increases the power output to arrest the frequency drop when a disturbance occurs; however,the output should be reduced after a preset period to prevent over-deceleration (OD) ; therefore, a second frequency dip might be caused.This paper proposes an SIC scheme to improve the frequency nadir (FN) while preventing OD.To improve the FN,the power reference is defined as a constant, which is determined by considering the power margin and available kinetic energy and maintained until the FN.To prevent OD, after the FN, the power reference slowly decays with the rotor speed.The performance of the proposed scheme is validated under various wind conditions using an EMTP-RV simulator.The results clearly indicate that the proposed scheme increases the FN while preventing OD.
Frequency nadir (FN) Over-deceleration (OD) Stepwise inertial control (SIC)
D.Yang J.Lee Y.C.Kang
Department of Electrical Engineering and WeGAT Research Center, Chonbuk National University, Korea Department of Electrical Engineering, WeGAT Research Center and Smart Grid Research Center, Chonbuk
国际会议
南京
英文
398-401
2015-09-21（万方平台首次上网日期，不代表论文的发表时间）