Study on the Correlation between Internal and External Transient Phenomena Caused by Disconnector Operation in GIS

Yu Liang, Lawu Zhou, Yu Chen, Binyou Yang, Hui Wang, Feilong Li
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引用次数: 1

Abstract

In order to explore the correlation between the electromagnetic transient phenomenon caused by the GIS internal and external transient loops caused by the isolation switch operation, in this paper, the 126kV GIS intelligent substation is taken as the research object. According to the field size of 126kV GIS and the corresponding voltage level, the corresponding components in GIS are equivalently modeled and analyzed, and the Mayr arc model is also applied. Based on the analog isolating switch, the GIS internal and external transient simulation loop of the ideal transformer with the ratio of 1:1 is used. The electromagnetic transient simulation software Atp-emtp is used to simulate the internal and external transient loops of GIS. Through the analysis of the transient simulation inside and outside the GIS, the transient characteristics of VFTO and VFTC generated in GIS are basically the same; the main time of the transient phenomenon caused by the isolation switch operation in GIS is basically the same; the most intense oscillations in VFTO, VFTC and TEV in GIS occur at the initial moment of transient generation, indicating that transient phenomenon is the strongest at the initial moment once transient phenomenon occurs.
GIS中断路操作引起的内外瞬变现象相关性研究
为了探讨隔离开关操作引起的GIS内、外暂态回路引起的电磁暂态现象之间的相关性,本文以126kV GIS智能变电站为研究对象。根据126kV GIS的场强大小和相应的电压等级,对GIS中相应的分量进行等效建模和分析,并应用Mayr电弧模型。在模拟隔离开关的基础上,采用1:1比例的理想变压器的GIS内外暂态仿真回路。利用电磁瞬变仿真软件Atp-emtp对GIS的内外瞬变回路进行仿真。通过对GIS内外的暂态仿真分析,在GIS中生成的VFTO和VFTC的暂态特性基本相同;GIS中隔离开关运行引起暂态现象的主要时间基本相同;GIS中VFTO、VFTC和TEV的振荡最强烈发生在瞬态发电的初始时刻,说明瞬态现象一旦发生,在初始时刻瞬态现象最强。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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