大型发电机定子绕组反时限过负荷保护整定计算问题研究

Study on Setting Calculation of Inverse Time Overload Protection of Large Generator Stator Winding

本文提出一种发电机反时限过电流保护整定计算方案,解决由于发电机反时限过电流保护不能满足级差关系配合的问题。通过对DL/T 684-2012与GB/T 7064-2008的分析比较,本方案实现了极差关系的良好配合,最后以福清核电工程为例,给出详细计算过程,为定子绕组反时限过负荷保护的整定提供经验参考。

In this paper,a setting calculation scheme of generator inverse time over-current protection is proposed to solve the problem that the generator inverse time over-current protection can not meet the coordination of differential relationship.Through the analysis and comparison of DL/T 684-2012 and GB/T 7064-2008,this scheme realizes the good cooperation of range relationship.Taking Fuqing Nuclear Power Project as an example,the detailed calculation process is given to provide experience reference for colleagues.