计及后备保护优化级数的改进阻抗修正反时限过流保护整定方法  

Setting Optimization of Improved Impedance Correction Inverse Time Overcurrent Protection Considering Backup Protection Optimization Series

作　　者：黄景光[1] 李浙栋 张宇鹏 张员宁 陈勇 翁汉琍[1] 李振兴[1] 林湘宁[3] HUANG Jingguang;LI Zhedong;ZHANG Yupeng;ZHANG Yuanning;CHEN Yong;WENG Hanli;LI Zhenxing;LIN Xiangning(College of Electrical Engineering and New Energy,China Three Gorges University,Yichang 443002,Hubei Province,China;Shaoxing Power Supply Company,State Grid Zhejiang Electric Power Co.,Ltd.,Shaoxing 312000,Zhejiang Province,China;State Key Laboratory of Advanced Electromagnetic Engineering and Technology(Huazhong University of Science and Technology),Wuhan 430074,Hubei Province,China)

机构地区：[1]三峡大学电气与新能源学院,湖北省宜昌市443002 [2]国网浙江省电力有限公司绍兴供电公司,浙江省绍兴市312000 [3]强电磁工程与新技术国家重点实验室(华中科技大学),湖北省武汉市430074

出　　处：《电网技术》2022年第7期2768-2777,共10页Power System Technology

基　　金：国家自然科学基金项目(52077120)。

摘　　要：提出了一种计及后备保护优化级数的改进阻抗修正反时限过流保护整定方法。首先,对常规的阻抗修正反时限过流保护算法进行改进,通过增加后备保护优化级数提升其远后备保护的动作速度;其次,针对优化后的阻抗修正反时限过流保护算法整定复杂且存在失配风险的问题,以优化后的阻抗修正反时限过流主保护和后备保护总动作时间最小为目标函数,以保护选择性、灵敏性要求为约束条件,建立反时限保护参数优化整定数学模型,并引入量子遗传算法进行求解。理论分析和基于PSCAD的仿真结果表明,所提基于量子遗传算法的改进阻抗修正反时限过流保护优化整定方法能够有效提升保护的选择性和速动性。An improved impedance correction inverse time limit overcurrent protection setting is proposed,which takes the backup protection optimization series into consideration.First the conventional impedance correction inverse time overcurrent protection algorithm is optimized by increasing the number of the backup protection optimization stages to improve the operation speed of the remote backup protection;Then,to deal with the problem that the setting of the optimized impedance correction inverse time overcurrent protection may be complicated and unmatchable,the minimum total operating time of the optimized impedance correction inverse time overcurrent main protections and the backup protections is taken as the objective function,and the protection selectivity and sensitivity requirements as the constraints,the inverse-time protection parameter optimization setting mathematical model is established and solved by the Quantum genetic algorithm.Theoretical analysis and simulation results based on the PSCAD show that the proposed Quantum genetic algorithm based setting optimization scheme of the impedance correction inverse time overcurrent protection effectively improves the selectivity and speed of the protection.

关 键 词：反时限过流保护 改进阻抗修正 速动性 参数优化整定 后备保护优化级数 量子遗传算法 

分 类 号：TM721[电气工程—电力系统及自动化]