基于电流突变量的站域后备保护方案

发布时间：2018-02-08 09:12

本文关键词： 智能变电站站域后备保护全数字化保护电流差动原理　出处：《电力科学与技术学报》2015年04期 　论文类型：期刊论文

【摘要】：基于智能变电站信息共享的特点,研究出一种提升传统智能变电站保护性能的优化方法,详细阐明站域保护的含义和范围,将全站差动区划分为边界差动区和元件差动区,在SPBCD保护算法的基础上引入新的差动优先级划定方法,提出一种基于电流突变量的差动保护后备算法,实现了后备保护对故障元件的准确、快速定位,同时在跳闸策略上还充分考虑到断路器偶然故障拒动的情形,通过使用扩展跳闸方法,提升后备保护策略的容错能力。PSCAD仿真分析验证了SPBCV保护原理的正确性和可行性。
[Abstract]:Based on the characteristics of intelligent substation information sharing, an optimization method for improving the performance of traditional intelligent substation protection is developed. The meaning and scope of station domain protection are expounded in detail, and the whole station differential region is divided into boundary differential region and element differential region. On the basis of SPBCD protection algorithm, a new differential priority determination method is introduced, and a backup algorithm of differential protection based on current sudden change is proposed, which realizes the accurate and fast location of fault components by backup protection. At the same time, the fault failure of circuit breaker is also taken into account in tripping strategy. The correctness and feasibility of SPBCV protection principle are verified by using extended tripping method to improve the fault-tolerant ability of backup protection strategy.
【作者单位】：华中科技大学强电磁工程与新技术国家重点实验室;中国电力科学研究院;三峡大学电气与新能源学院;
【基金】：国家自然科学基金(51477090)
【分类号】：TM63;TM77

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