A DFIG Islanding Detection Scheme Based on Reactive Power Infusion

2nd International Conference on Design, Materials, and Manufacturing

材料科学;机械制造

Wang, M.^1 ; Liu, C.^1 ; He, G.Q.^1 ; Li, G.H.^1 ; Feng, K.H.^2 ; Sun, W.W.^1

China Electric Power Research Institute, Haidian District, Beijing

100092, China^1

China EPRI Zhangbei Wind Power Research and Detection Company, Zhangbei, Hebei

076450, China^2

关键词: Frequency differences;    Islanding conditions;    Islanding detection;    Normal condition;    Power system islanding;    Reactive power currents;    Safety hazards;    Voltage total harmonic distortion;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/220/1/012032/pdf
DOI  :  10.1088/1757-899X/220/1/012032

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

A lot of research has been done on photovoltaic (the "PV") power system islanding detection in recent years. As a comparison, much less attention has been paid to islanding in wind turbines. Meanwhile, wind turbines can work in islanding conditions for quite a long period, which can be harmful to equipments and cause safety hazards. This paper presents and examines a double fed introduction generation (the "DFIG") islanding detection scheme based on feedback of reactive power and frequency and uses a trigger signal of reactive power infusion which can be obtained by dividing the voltage total harmonic distortion (the «THD») by the voltage THD of last cycle to avoid the deterioration of power quality. This DFIG islanding detection scheme uses feedback of reactive power current loop to amplify the frequency differences in islanding and normal conditions. Simulation results show that the DFIG islanding detection scheme is effective.