气体继电器跳闸保护不同接线方式可靠性分析

Reliability Analysis of Different Connection Modes for Gas Relay Tripping Protection

基于重瓦斯保护性能与接点装置误动、拒动有很大关系,首次以接点装置拒动和误动的基础概率数据为依据,通过排列组合及概率计算方法对气体继电器拒动、误动可能性进行计算,全面对比几种重瓦斯跳闸接线方式的不同效果及综合可靠性情况。经过分析比较,指出多种接线方式的缺点,筛选出两种效果较好的接线方式,并进一步综合分析二者的特点与不同之处,给出了遴选可靠性较好、更为简捷的重瓦斯跳闸保护接线方式的结论性建议。

As the tripping protection function has a great relation with the contact system,this paper gives a detailed comparison between different connection modes by analyzing and calculating the probabilities of unwanted operation and refused operation for the first time, mainly based on the basic probability data of the contacts and the permutation and combination analysis. After comprehensive analysis and comparison, this paper points out the shortcomings of various of wiring modes, and in further, makes an analysis for the respective characteristics and differences between two recommended modes with better effects, meanwhile provides a reference to select more reliable and simpler connection mode for oil flow tripping protection, especially for key engineering applications.