Secondly , against different elements influencing branch coefficient , some accelerated measures are described . fast method to calculate branch coefficients without fault calculation is presented 其次,在與繼電保護整定計算密切相關的運行方式的選擇算法方面,針對影響分支系數(shù)的因素,介紹了一些加快措施,提出了無需故障計算的分支系數(shù)快速算法。