石英砂对电磁斥力高速开断器介质恢复特性的影响

发布时间：2018-01-15 13:06

本文关键词：石英砂对电磁斥力高速开断器介质恢复特性的影响　出处：《高电压技术》2014年01期 　论文类型：期刊论文

【摘要】：为提高电磁斥力高速开断器(HERI)的介质恢复性能,设计了石英砂灌装开断器的结构方案。搭建了包含电流回路、自然换流回路以及高压回路的介质恢复试验电路,在换流电流峰值为2.4 kA(上下波动范围3%)、介质恢复时间为60μs、加载高压为1.5 kV的电气参数条件下,完成了有、无石英砂2种方案的介质恢复性能对比试验。试验结果表明,灌装石英砂后的HERI分断速度比未灌装石英砂时降低了21.2%;然而,由于灌装的石英砂可以冷却电极,且增加了开断器腔体内的压力,因此其介质恢复强度不降反升,说明灌装石英砂的HERI方案具有更好的介质恢复性能。
[Abstract]:In order to improve the dielectric recovery performance of electromagnetic repulsion high speed breaker (Heri), the structure scheme of quartz sand filling breaker is designed, and the current loop is built. The dielectric recovery test circuit of the natural commutation circuit and the high voltage circuit has a peak value of 2.4 Ka (up and down fluctuation range: 3 渭 s), and the dielectric recovery time is 60 渭 s. Under the condition of 1.5 kV electrical parameter loading, the medium recovery performance of the two schemes with or without quartz sand was tested. The breaking speed of HERI after filling quartz sand was lower than that of unfilled quartz sand. However, the filled quartz sand can cool the electrode and increase the pressure in the breaker cavity, so the medium recovery strength does not decrease but rise. It shows that the HERI scheme of filling quartz sand has better medium recovery performance.
【作者单位】：海军工程大学电气工程学院;海军驻大连426厂军事代表室;
【基金】：国家自然科学基金(50877078;51177169;51207166)~~
【分类号】：TM56
【正文快照】： 0引言1与其他限流装置[1-2]相比,混合型限流熔断器具有可靠性高[3-4]、限流能力显著[5-6]和分断速度快等优点[7-8]。电磁斥力高速开断器是一种用于混合型限流熔断器的新型开断装置。它的基本原理是采用电磁斥力高速开断技术,实现通流铜桥的快速分断。与传统的爆炸辅助型开断器

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