摘要
基于地网不等电位模型,在忽略土壤火花放电造成的非线性情况下,采用小功率冲击发生器对运行中的110kV变电站地网进行了冲击接地试验,测得了不同冲击电流作用下地网内外各点的冲击电位升的暂态波形,分析了垂直接地体(杆塔接地)及地网冲击散流规律及其动态时变性和冲击阻抗特性,并绘出了地网冲击电位分布图。
Using unequal potential model of ground mesh and ignoring the nonlinear situation due to spark discharge in soil, the impulse grounding test of ground mesh for 110 kV substation being operated is performed by low capacity impulse current generator; the transient waveforms of impulse potential rises excited by different- amplitudes of impulse current are measured at the points inside and outside the ground mesh; the impulse flow dispersion rule, dynamic time variation and impulse impedance characteristic of grounded tower and ground mesh are analyzed; the impulse potential distribution map of ground mesh based on test data is given.
出处
《电网技术》
EI
CSCD
北大核心
2010年第3期201-204,共4页
Power System Technology
关键词
接地网
冲击电位分布
冲击特性
ground mesh
impulse potential distribution
impulse characteristic
