考虑电网脆弱性的输电网扩展规划模型

基于电网脆弱性与均匀性理论,提出了电网全局结构与状态脆弱因子模型,用于衡量不同电网模型的脆弱程度。构建了综合考虑电网全局脆弱性、经济性与电网安全约束集的多目标电网规划模型。采用改进混沌交叉变异遗传算法进行优化得到最优规划方案。其中,针对多目标量纲不统一,权重不易定的问题,采用主成分析法对每代种群中个体进行综合评估,使评估结果更加客观可信。通过对Garver-6节点系统和Garver-18节点系统的仿真分析证明了所提模型的可行性和有效性。

Grid Transmission Expansion Planning Model Based on Grid Vulnerability

Based on the theory of grid vulnerability and uniformity,this paper proposes global network structure and state vulnerability factor model,which is used to measure the vulnerability of different grid models.A multi-objective power grid planning model is established which considering the global power network vulnerability,economy and grid security constraint.The improved chaos crossover and mutation genetic algorithm is used to optimize the optimal planning.For the problem of multi-objective optimization,dimension is not uniform,the weight is not easy given,and the principal component analysis method is used for the comprehensive assessment of the population every generation,which makes the results more objective and credible assessment.The feasibility and effectiveness of the proposed model are validated by simulation results of Garver-6 bus system and Garver-18 bus.