Modeling of wind turbine generator based on piecewise parameter and its lightning transient overvoltage analysis

被引：0
|
作者：
Luo, Richeng [1 ]
Li, Wen [1 ,2 ]
Li, Zhiqian [3 ]
Huang, Zhiming [4 ]
Zhang, Wei [5 ]
机构：
[1] School of Electrical and Information Engineering, Changsha University of Science & Technology, Changsha
[2] Live Working Center, State Grid Hunan Electric Power Company, Changsha
[3] State Grid Zhumadian Electric Power Company, Zhumadian
[4] Maintenance Company, State Grid Hunan Electric Power Company, Changsha
[5] State Grid Changsha Electric Power Company, Changsha
来源：
Gaodianya Jishu/High Voltage Engineering | 2015年 / 41卷 / 08期
基金：
中国国家自然科学基金;
关键词：
ATP/EMTP; Electromagnetic coupling; Lightning stroke; Overvoltage; Piecewise parameter model; Signal cables; Wind turbine;
D O I：
10.13336/j.1003-6520.hve.2015.08.032
中图分类号：
学科分类号：
摘要：
Lightning stroke is one of the most important influences on secure running of wind turbine generator (WTG). The base of wind turbine, the core of internal controlling cable, and the cable shielding layer will generate induced voltage when the WTG suffers from lightning stroke. Considering electro-magnetic inducted voltages of inductance and capacitance, we build an equivalent model including wind turbine blade, tower and signal cable to study transient overvoltage caused by lightning stroke better. Furthermore, the simulation is conducted by utilizing ATP/EMTP electro-magnetic transient simulator. Finally, we analyze the influence of wind turbine signal cable on induction voltage by three factors, such as the wind turbine grounding resistance, the lightning current waveform, and the height of tower. The results show that wave head time is inversely proportional to voltage, when wave head time is 1.2 μs, voltage difference in the top of the tower is 1611.6 times larger than 20 μs; the higher tower is, the greater the voltage difference is; grounding resistance is proportional to the ground potential of tower base, when the grounding resistance is 10 Ω, the voltage of tower base is 8.4 times larger than 1 Ω. ©, 2015, Science Press. All right reserved.
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页码：2780 / 2787
页数：7
相关论文
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