【作者】 王永强；

【导师】 程仲林；

【作者基本信息】 华北电力大学 ， 高电压与绝缘技术， 2002， 硕士

【摘要】 真空开关在开断并联电容器组和高压电动机时可能产生重击穿过电压和多次重燃过电压，对设备绝缘造成严重威胁。本文利用电磁暂态计算程序（EMTP）对上述两种过电压进行了模拟计算研究；同时，基于MOA多指数模型和RC装置原理研究了如何使用MOA和RC装置来对过电压进行限制；基于L-R阻尼原理探讨了使用L-R装置限制过电压的可行性；并得出了以上保护装置的参数确定方法。更多还原

【Abstract】 When vacuum switches switch off shunt capacitors and HV motors, restriking overvoltage and multi-reburning overvoltage may be brought about and threaten insulation of equipments severely. In this thesis we use Electromagnetic Transient Program (EMTP) to simulate and study those two kinds of overvoltage; and research how to use MOA and RC devices to reduce them basing on multi-exponential MOA model and principle of RC device. At the same time, based on L-R damping principle, researches are made on the feasibility of restricting overvoltage by L-R device. Thus methods of ensuring the parameters of these devices are concluded.Wang Yongqiang (High Voltage and Insulation Technology)Directed by Prof.Cheng Zhonglin更多还原