摘要
对雷电冲击下杆塔电位进行实际测量是很困难的,鉴此,介绍了一种采用模型法研究杆塔在雷电冲击下的电位分布,并采用频响法测试冲击接地电阻。通过对模型的测试数据进行分析,发现冲击接地电阻与杆塔高度密切相关,因此,在杆塔防雷优化设计中考虑杆塔冲击接地电阻值的控制范围时杆塔高度是一个不可忽略的重要因素。
It is very difficult to measure the tower potential under lightning.The paper presents a model method to research the tower potential distribution under lightning,and measures impulse grounding resistance with frequency response method.It is found through analysis of the test data on the model that the impulse grounding resistance is closely interrelated with the tower height.So in the optimized design of tower against lightning,the tower height is so important a factor as to consider the control range of impulse grounding resistance that it can not be ignored.
出处
《南方电网技术》
2012年第1期27-29,共3页
Southern Power System Technology
关键词
冲击接地电阻
雷电流
频响
电感
impulse grounding resistance
lightning current
frequency response
inductance
