摘要
运用Saber的交流小信号分析工具,对建立的变压器绕组暂态仿真模型,从频域的角度研究了电压传输函数及其容性频带的宽度与绕组空间因数的关系。运用Saber的暂态分析和傅立叶分析工具研究了整个变压器包括高压母线连接的电气网络对局部放电脉冲电流信号的频率响应特性,比较了不同的监测点、不同的局部放电源位置对输出点的频率特性的差异,分析了高压母联网络、中性点接地方式以及低压绕组的耦合效果对局部放电信号传播的影响。
By the aid of AC Small Signal Analysis in Saber, the relations between the voltage transfer function, the width of the capacitive frequency band and spacial factor are studied in frequency domain for the transient model of power transformer windings. Using Transient Analysis and Fourier Analysis in Saber, the frequency response of the PD pulses injected at the terminals of transfer path considering HV electric network in substation are researched. Comparing the output frequency characteristics at different monitoring points and different PD source locations, the authors analyze the effects of HV electric network, neural points grounding ways and LV windings on PD pulse propagation.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2002年第10期91-96,共6页
Proceedings of the CSEE
基金
教育部骨干教师基金项目(重大990301)。
