摘要
高比例逆变型分布式电源(IIDG)和储能系统(ESS)接入配电网,导致传统反时限过流保护存在误动或拒动问题。在IIDG和ESS故障等值模型的基础上,分析IIDG和ESS对传统配电网反时限过流保护特性的影响;以保护选择性要求为约束条件,建立以速动性和灵敏性为优化目标的反时限过流保护多目标优化模型;基于标准多目标粒子群优化算法,引入自适应惯性权重、学习因子、网格密度与柯西变异因子,提出一种含IIDG和ESS的配电网反时限过流保护定值优化方案,并结合基于层次分析法和客观赋权法综合权重的理想逼近法对模型进行求解。通过PSCAD/EMTDC仿真验证了保护优化模型和求解方法的有效性与优越性。
The high proportion of inverter-interfaced distributed generator(IIDG)and energy storage system(ESS)in distribution network may cause false or failure tripping of the traditional inverse-time overcurrent protection.Based on the fault equivalence models of IIDG and ESS,the influence of IIDG and ESS on the traditional inverse-time overcurrent protection in distribution network is analyzed.A multi-objective optimiza⁃tion model for the inverse-time overcurrent protection is established,which takes the protection speed and sensitivity as the optimization objectives and the selectivity as the constraints.Based on the standard multiobjective particle swarm optimization algorithm,and with the introduce of adaptive inertia weight,learning factor,grid density and Cauchy mutation factor,the optimal setting method of inverse-time overcurrent pro⁃tection for distribution network with IIDG and ESS is proposed.Furthermore,the proposed model is solved combined with the ideal approximation method based on analytic hierarchy process and objective weighting method.The validity and superiority of the protection optimization model and the solution method are verified by PSCAD/EMTDC simulation.
作者
王钢
冯婧桐
白浩
李杰
周歧林
王浩鸣
黄敏
WANG Gang;FENG Jingtong;BAI Hao;LI Jie;ZHOU Qilin;WANG Haoming;HUANG Min(School of Electric Power Engineering,South China University of Technology,Guangzhou 510641,China;Electric Power Research Institute,China Southern Grid,Guangzhou 510663,China;Guangzhou Power Supply Bureau of Guangdong Power Grid Co.,Ltd.,Guangzhou 510000,China)
出处
《电力自动化设备》
EI
CSCD
北大核心
2024年第11期202-209,共8页
Electric Power Automation Equipment
基金
广州市科技计划项目(2023A04J1589)
中国南方电网有限责任公司科技项目(GZHKJXM20200081)
广东省普通高校青年创新人才项目(2024KQNCX002)。
关键词
配电网
继电保护
反时限过流保护
逆变型分布式电源
储能系统
多目标粒子群优化算法
distribution network
relay protection
inverse-time overcurrent protection
inverter-interfaced distributed generator
energy storage system
multi-objective particle swarm optimization algorithm
