用于串联电容器组快速保护的可控多级火花间隙

发布时间：2018-06-30 11:07

本文选题：串联电容器 + 旁路开关　；参考：《高电压技术》2014年12期

【摘要】：为提高串联电容器组快速保护装置的可靠性,开发了一种新型的可控火花间隙—Tesla变压器驱动的与频率相关的多级火花间隙。与现有3电极间隙依靠运行电压触发的工作原理不同,这种新型间隙的可靠快速动作完全不受它承受的运行电压的影响。利用多级间隙与Tesla变压器试验样机对新型可控间隙的动作过程、可靠动作概率和动作时间等动作特性进行了试验研究。研究结果表明:通过合理设置参数,新型可控间隙的工频耐受电压可以达到串联电容器组工作电压的10倍以上,确保不会误动作,而选取动作阈值电压足够高就可以保证保护装置具有极高的动作概率,消除拒动,具有极高的可靠性;新型保护系统动作时间≤20μs,具有很高的动作速度。
[Abstract]:In order to improve the reliability of the rapid protection device for series capacitor banks, a new type of controllable spark gap-Tesla transformer driven multistage spark gap is developed. Different from the current three electrode gap working principle which is triggered by running voltage, the reliable and fast operation of this new type of gap is completely independent of the operating voltage it bears. By using the multi-stage gap and Tesla transformer test prototype, the operation process, reliable operation probability and action time of the new type controllable clearance are studied experimentally. The results show that by setting the parameters reasonably, the power frequency tolerance voltage of the new type of controllable gap can reach more than 10 times of the working voltage of the series capacitor bank, which ensures that there is no misoperation. If the threshold voltage is high enough, the protection device will have high operation probability and high reliability, and the new protection system will have high action speed when the operation time is less than 20 渭 s.
【作者单位】：清华大学深圳研究生院;
【分类号】：TM53

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