245kV气体绝缘开关柜DS/ES室SF6/N2混合气体击穿电压特性

2011 1st International Conference on Electric Power Equipment - Switching Technology Pub Date : 2011-10-01 DOI:10.1109/ICEPE-ST.2011.6123009

Wang-Byuck Suh, Jae-Yun Yim, K. Song, Yong-moo Chang, D. Bae

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引用次数: 2

摘要

SF6气体绝缘开关设备(GIS)是一种将电力设备安装在密封罐中，减小电力设备体积的输配电线路用电设备。由于GIS的尺寸约为空气绝缘开关柜的1/10，故应选用优质绝缘气体。然而，这种气体是全球变暖的一个来源，由于昂贵的绝缘材料，其生产成本非常高。因此，要么开发一种新的相对气体:空气和N2气体，要么减少SF6气体。在考虑安全性和经济可行性的前提下，需要开发N2混合气。本研究设计了一个全尺寸的DS/ES气室，并对其击穿电压特性进行了评估。在SF6/N2配比为50/50的情况下，对245kV GIS的DS/ES隔室进行了绝缘性能试验。通过对SF6气体和SF6/N2混合气体的对比分析，实际结果将作为环保245kV GIS绝缘设计的标准参考。

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Breakdown voltage characteristics in the SF6/N2 gas mixtures for DS/ES compartment of a 245kV gas insulated switchgear

The SF6 gas insulated switchgear (GIS) is the electric power equipment for transmission and distribution line which reduced the size of the electric power equipments by installing in a sealed tank. Since the size of the GIS is about 1/10 of the air insulated switchgear, high quality insulation gas should be used. However this gas is a source of global warming and its production cost is very high because of expensive insulation material. Therefore, it is necessary either to develop a new relative gas: air and N2 gas or to reduce SF6 gas. The development of N2 mixture gas is needed when we consider safety and economic feasibility. In this study, a full scaled gas chamber for DS/ES compartment was designed and evaluated the breakdown voltage characteristics. In the mixing ratio of SF6/N2=50/50, insulation performance tests for DS/ES compartment for 245kV GIS were also conducted. By comparing and analyzing SF6 gas and SF6/N2 mixture gas, the results will be actually used as the standard reference of insulation design for eco-friendly 245kV GIS.

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2011 1st International Conference on Electric Power Equipment - Switching Technology

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