摘要
为研究风机被雷击时的全过程电流,利用电磁暂态仿真软件ATP仿真雷击风机叶片时各部位雷电流,并进行频谱分析。通过总结分析仿真结果,设计了雷击风机放电全过程电流测量系统。系统选取罗氏线圈以及无感电阻为传感器,罗氏线圈安装于轮彀和塔筒处,无感电阻安装于叶片中。传感器与雷电测量单元连接,测量单元将测量结果通过光纤传输到终端。性能测试结果表明该系统满足雷电流波形采集要求。风机雷电放电全过程电流测量系统对于风机接闪放电过程分析具有重要意义。
In order to study the whole process current for lightning striking wind turbine,this paper studied the difference of currents on various parts of wind turbine when lightning strikes wind turbine blade using electromagnetic transient simulation software ATP,then spectrum analyses are done to the currents.According to analyzing the simulation results,this paper designed the whole process current measurement system. The system selects rogowski coil and non-inductive resistor as sensors,rogowski coil was installed in hub and tower,and non-inductive resistor was installed in blade.Sensors were connected to the lightning measuring unit and the measurement unit transmitted the result to the terminal through the optical fiber. Performance test result shows that the system satisfies the acquisition requirements of lightning current.The whole process of lightning current measurement system is important for the analysis of wind turbine＇s lightning discharge process.
出处
《仪表技术与传感器》
CSCD
北大核心
2017年第10期46-49,54,共5页
Instrument Technique and Sensor
基金
国家电网公司2015年总部科技项目(SGTYHT/14-JS-188)
关键词
风力发电机
雷电流
主放电电流
预放电电流
传感器
电流测量
wind turbine
lightning current
main discharge current
pre-discharge current
sensor
current measurement
