气体绝缘变电站内PT的特快速暂态仿真建模.PDF

第23 卷 第7 期 中 国 电 机 工 程 学 报 Vol.23 No.7 Jul. 2003 2003 年7 月 Proceedings of the CSEE ©2003 Chin.Soc.for Elec.Eng. 文章编号：0258-8013 (2003) 07-0084-04 中图分类号：TM63 文献标识码：A 学科分类号：4704014 气体绝缘变电站内PT 的特快速暂态仿真建模 张重远， 梁贵书， 崔 翔 (华北电力大学电力工程系，河北 保定 071003) MODELING OF POTENTIAL TRANSFORMERS IN GAS INSULATED SUBSTATION FOR THE VERY FAST TRANSIENT SIMULATION ZHANG Zhong-yuan, LIANG Gui-shu, CUI Xiang (Dept. of Electrical Engineering, North China Electric Power University, Baoding 071003, China) ABSTRACT ：For an accurate simulation of the voltage stress 最后，应用一种特定的RLC 电路综合方法建立了该PT 的电 in secondary circuits caused by Very Fast Transients 路模型。该方法具有简单、有效和通用的特点，对于任何形 Overvoltage (VFTO) in Gas Insulated Substation (GIS), a 式、任何电压等级的互感器均可使用。 sophisticated modeling of the potential and current 关键词：气体绝缘变电站；电压互感器；特快速暂态过电压； trans-formers (PT/CT) is of vital importance. In this paper, a 传导干扰；黑盒子技术；矢量匹配；电路模型 new method for modeling high frequency PT is proposed and the high frequency (10MHz) circuit model for an 1 引言 inductive Potential Transformer in GIS is set up. Firstly, 在电力系统中，变电站所面临的电磁兼容问题 the transfer function model for the PT is set up by means of 尤为尖锐和突出。而在气体绝缘变电站（Gas Vector Fitting using rational function consisting of real poles as Insulated Substation 简称GIS ）内，由于SF6 气体的 well as complex conjugate poles and zeros to approximated the 特殊性质和电站结构的小型化，开关操作会在GI