中压环保型气体绝缘开关设备的设计

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摘要 SF₆是一种优良的绝缘以及灭弧介质,广泛被应用在柜式气体绝缘金属封闭开关设备中。但其是温室效应气体,而且在灭弧时会产生有毒气体,因此需要开发和使用环保型气体作为SF₆的替代气体。在中压开关柜领域,采用真空开断技术和使用环保型气体绝缘的技术日趋成熟。本文分别对N₂、CO₂、干燥空气等替代气体进行对比分析,结果表明N₂和干燥空气可以作为绝缘介质应用在12kV中压领域的环保型充气柜中。同时,本文还对环保型充气柜的隔离断口距离和对地距离的进行设计确定,并确定如何提高气隙中的击穿电压。

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	陈晶华

关键词 ：环保气体绝缘, N₂, 清洁干燥空气, 开关设备, C-GIS, 隔离断口距离, 对地距离

Abstract：SF₆ is a kind of excellent insulation and arc extinguishing medium. It is widely used in cabinet type gas insulated metal closed switchgear. But it is a greenhouse effect gas, and it will produce poisonous gas in arc extinguishing. It is necessary to develop and use environment-friendly gas as an alternative gas for SF₆. In the field of medium voltage switchgear, vacuum interruption technology and environment-friendly gas insulation technology have been mature. In this paper, N₂, CO₂, dry air and other alternative gases are compared. The results show that N₂ and dry air can be used as insulation medium in the medium pressure field 12kV environment friendly inflatable cabinet. At the same time, it introduces the isolation fracture distance of the environmental protection inflatable cabinet, and how to improve the breakdown voltage in the air gap.

Key words： environmental protection gas insulation N₂ clean and dry air switchgear C-GIS isolation fracture distance ground distance

收稿日期: 2018-07-23 出版日期: 2019-01-15

作者简介: 陈晶华（1986-）,男,福建省福州市人,本科,工程师,主要从事气体绝缘环网柜的研发工作。

引用本文:

陈晶华. 中压环保型气体绝缘开关设备的设计[J]. 电气技术, 2019, 20(1): 106-108. Chen Jinghua. Design of medium pressure environmental protection type gas insulated switchgear. Electrical Engineering, 2019, 20(1): 106-108.

链接本文:

https://dqjs.cesmedia.cn/CN/Y2019/V20/I1/106