摘要
在分析干式空心电抗器铝导线质量和损耗与平均线径之间关系的基础上,提出把电抗器损耗作为一个目标函数更符合电抗器优化设计的工程实际情况。以铝导线质量和电抗器损耗为目标函数,建立了干式空心电抗器的多目标优化模型。求解模型采用优化效果较好的NSGA-Ⅱ算法。为了增加种群的多样性和提高算法的搜索能力,提出以一定比例选择种群中的支配个体;在非支配排序前以一定概率对合并种群中重复个体和较密集个体的部分变量进行变异;在精英策略中设置了外部非支配集,并使其中的个体参与锦标赛选择。50 kvar干式空心电抗器的优化设计结果表明,采用改进NSGA-Ⅱ算法得到的Pareto最优解分布更加均匀。
Based on the analysis of the relationship of aluminum wire weight and power loss to the average wire diameter of dry-type air-core reactor,this paper proposed that it was more applicable to the engineering practice situation to make the power loss as an objective function with the optimum design of reactor.Taking both aluminum wire weight and power loss as objective functions,a multi-objective optimization model for dry-type air-core reactor was built.NSGA-Ⅱ algorithm,an algorithm with good optimization effect,was used to solve the model.In order to increase the population diversity and improve searching ability of the algorithm,it was proposed that the dominated individuals of the population were selected in a cetain proportion;before non-dominated sorting,partial variables which belonged to the repeated individuals and dense individuals of combined population were mutated in a certain probability;external nondominated set was set in elitist strategy and the individuals of which participate in tournament selection.By using the improved algorithm,the optimum design results of 50 kvar reactor show that the distribution of Pareto optimal solutions is more uniform.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2010年第18期115-121,共7页
Proceedings of the CSEE
