摘要
在提出GIS母线等效模型和Dommel传输线模型的基础上,考虑线路参数频变特性推导快速暂态过电压(VFTO)计算表达式,理论分析不同结构参数对VFTO幅频特性的影响。仿真计算隔离开关(DS)闭合顺序和电压互感器(TV)位置对VFTO的影响,给出了不同抑制设备对VFTO抑制效果。研究结果能用于评价断路器断口电容、TV等效电容、母线长度、DS闭合顺序和TV安装位置等因素对VFTO的影响,评价合闸电阻、铁氧体等VFTO抑制措施的效果。
On the basis of GIS busbar equivalent model and the Dommel transmission line model,considering the frequency- dependent characteristics of the line parameters,the calculation expression of very fast transient overvoltage （VFTO）is derived.And the influence of different structural parameters to VFTO＇s amplitude-frequency characteristic is analyzed by theoretical method.The influence of disconnector （DS） closing sequence and voltage transducer （ TV ） position on VFI＇O is computed by simulation.And the inhibitory effect of different suppression equipment on VFI＇O is also given.The research results can be used to evaluate the effect to VFTO by the fracture capacitance of the breaker, the equivalent capacitance and position of TV,the length of the bus,the closing sequence of DS.The inhibition effect of closing resistance and ferrite to VFTO is evaluated.
作者
韩明明
陈博
朱文兵
辜超
高志新
HAN Mingming;CHEN Bo;ZHU Wenbing;GU Chao;GAO Zhixin(State Grid Shandong Electric Power Research Institute,Jinan 250003,China)
出处
《山东电力技术》
2018年第9期1-8,共8页
Shandong Electric Power
基金
国家863高技术基金项目(2015AA050204)
