Simulation and Experimental Research on S Parameter Characteristics of Partial Discharge UHF Signals in GIS
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Simulation and Experimental Research on S Parameter Characteristics of Partial Discharge UHF Signals in GIS
Vol. 44, Issue 1, Pages: 234-240(2018)
作者机构:
1. 西安交通大学电力设备电气绝缘国家重点实验室
2. 国网浙江省电力公司电力科学研究院
3. 国网浙江省电力公司
作者简介:
基金信息:
DOI:
CLC:
Published Online:31 January 2018,
Published:2018
稿件说明:
移动端阅览
WANG Yanbo, ZHU Mingxiao, SHAO Xianjun, et al. Simulation and Experimental Research on S Parameter Characteristics of Partial Discharge UHF Signals in GIS[J]. 2018, 44(1): 234-240.
DOI:
WANG Yanbo, ZHU Mingxiao, SHAO Xianjun, et al. Simulation and Experimental Research on S Parameter Characteristics of Partial Discharge UHF Signals in GIS[J]. 2018, 44(1): 234-240.DOI:
Simulation and Experimental Research on S Parameter Characteristics of Partial Discharge UHF Signals in GIS
摘要
为了研究局部放电特高频信号在GIS中的传播和衰减变化特性
首先采用有限积分法对GIS中的S参数进行仿真研究
分别分析了经过不同数量盆式绝缘子后S参数的变化。同时
在实验室内搭建了一套252 k V GIS局部放电实验平台
利用多个内置传感器检测了不同位置处的局放特高频信号
求解S参数并将其与仿真结果进行比较
得出的实验结果与仿真的幅值和波形均相一致
从而验证了仿真结果的有效性。最后
使用矢量网络分析仪测量了不同结构下的S参数
并对仿真模型进行进一步地细化和改变
得到的矢量网络分析仪的实验结果和仿真结果较为一致
进一步证明了仿真结论的合理性。结果和结论表明了单个盆式绝缘子对于特高频信号的衰减程度可到-3 d B
绝缘子数量与衰减程度成正比关系。
Abstract
Study of EM wave propagation characteristics in GIS is meaningful to analyze and localize partial discharge sources.First
based on the finite integration technique
the simulation of S parameters was performed to analyze changes of S parameters with the number of basin-type insulators.Meanwhile
a 252 kV GIS experiment platform was established
where signals from different positions could be obtained by inner sensors.Compared with S parameters calculated from experiments
the simulation results
which showed a good consistency both in waveform and amplitude
were proven to be reasonable.Moreover
a vector network analyzer was used to measure S parameters in different structures of GIS
and simulation models were refined and changed.The results of vector network analyzer were compared with those of simulation which had a good consistency and proved the rationalisation of the simulation conclusion.The results show that the attenuation influence of one insulator can be up to-3 d B
which is in proportion to the number of insulators.