现代电子技术2026，Vol.49Issue(4)：95-102,8.DOI:10.16652/j.issn.1004-373x.2026.04.016
基于白鲸算法的含逆变型分布式电源的配电网短路电流计算方法
Method of BWO-based short-circuit current calculation of distribution network with IIDG
摘要
Abstract
Due to the complexity of its fault characteristics,the integration of inverter-interfaced distributed generator(IIDG)into the distribution network can make the traditional short-circuit current calculation method no longer applicable in terms of calculation principles.In allusion to high dependency on initial value selection and poor convergence caused by inappropriate initial values in existing methods,a method of novel short-circuit current calculation for distribution networks with IIDG based on the beluga whale optimization(BWO)algorithm is proposed.An equivalent model of IIDG and its distribution network,incorporating low-voltage ride-through(LVRT)control strategies,is established.On this basis,a real and imaginary component equations of node voltages are derived,and a fitness function is constructed to transform the short-circuit current calculation into the function optimization.The BWO algorithm with strong global search capabilities is used to solve for node voltages and short-circuit currents in the network.The accuracy and convergence of proposed method are validated by comparing Matlab-implemented results with simulation results.The results indicate that the maximum relative error of the positive-sequence component of fault voltage amplitude at each node is 0.498%,and the maximum relative error of the negative-sequence component is 0.903%.The maximum relative error of the positive-sequence component of short-circuit current amplitude at each branch is 0.751%,and the maximum relative error of the negative-sequence component is 1.166%.The above results verify that the proposed calculation method has high accuracy and feasibility when an asymmetric fault occurs in the distribution network.关键词
逆变型分布式电源/配电网/低电压穿越/短路电流计算/白鲸算法/函数优化Key words
inverter-interfaced distributed generator/distribution network/low voltage ride through/short-circuit current calculation/beluga whale optimization algorithm/function optimization分类
信息技术与安全科学引用本文复制引用
罗雅心,赵建文,杜怡雯..基于白鲸算法的含逆变型分布式电源的配电网短路电流计算方法[J].现代电子技术,2026,49(4):95-102,8.基金项目
陕西省自然科学基础研究计划(2023-JC-YB-308) （2023-JC-YB-308）
