Single-Phase Adaptive Grounding Distance Protection for Tie Line of PMSG Wind Farm Based on Voltage Phasors

被引：0
|
作者：
Wang Y. [1 ]
Li F. [1 ]
Lu L. [2 ]
Xu X. [1 ]
机构：
[1] Engineering Research Center for Renewable Energy Power Generation and Grid Technology, Xinjiang University, Ministry of Education, Urumqi, 830047, Xinjiang Uyghur Autonomous Region
[2] Wind Power Technology Center of Gansu Electronic Power Company, Lanzhou, 730050, Gansu Province
来源：
| 1668年 / Power System Technology Press卷 / 41期
基金：
中国国家自然科学基金;
关键词：
Adaptive distance protection; Fault voltage; Frequency deviation; Measured voltage and current; Setting voltage; Tie line of PMSG wind farm; Transition resistance;
D O I：
10.13335/j.1000-3673.pst.2016.1923
中图分类号：
学科分类号：
摘要：
In allusion to mal-operation or miss operation problems of single-phase grounding distance protection for wind farm tie line caused by transition resistance bringing about inaccurate impedance measurement, voltage vector plane characteristics of double-supply systems are analyzed. Based on sequence current relationship of fault point and relay installation location, combined with wind farm side's zero sequence impedance characteristics, relationship expressions of measured voltage and fault point voltage are set up. According to phase angle characteristics of fault point voltage and setting voltage, a novel single-phase adaptive grounding distance protection scheme for tie line of PMSG wind farm, considering frequency deviation characteristics of DFIG, is put forward. Its operating performance is validated with simulations. Simulation results show that the proposed scheme is simple, reliable and immune to transition resistance. Besides, it is not affected by various operation conditions of wind farm, and can discriminate internal and external fault correctly. © 2017, Power System Technology Press. All right reserved.
引用
收藏
页码：1668 / 1673
页数：5
相关论文
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