配电网节能改造优化建模研究  

Research on optimal model for energy saving reconstruction of distribution networks

作　　者：张勇军[1] 陈超[1] 廖民传[2] 

机构地区：[1]华南理工大学电力学院广东省绿色能源技术重点实验室,广东广州510640 [2]广东省电力设计研究院,广东广州510600

出　　处：《电力系统保护与控制》2010年第15期60-64,共5页Power System Protection and Control

基　　金：广东省自然科学基金项目(06025630)~~

摘　　要：导线改造和无功补偿是实现配电网节能降耗的两项关键措施。提出了一种导线更换和中低压无功配置协同优化的配电网节能改造优化模型,以年总支出费用最小为目标,以导线更换线径、各种无功补偿组数和容量为控制变量,满足各种运行约束和安装维护约束,并采用分组整数编码的灾变遗传算法进行求解。以某地区实际配电线路改造为例,分别计算仅按经济电流密度进行导线更换、仅进行中低压无功补偿和将导线更换与中低压无功配置协同优化这三种改造方案的效益,结果表明提出的模型具有更好的降损效益和应用价值。Lines replacement and reactive power compensation are two key measures for saving energy in distribution networks.A model considered with lines replacement and reactive power compensation collaborative optimization of distribution networks is presented,which takes annual total expense minimum as the objective and the line replacement,vavious reactive compensation groups and capacity as the control variables,satisfied with different operational and installed constraints.Cataclysmic genetic algorithm with grouped integer encoding is adopted to solve this problem.Finally,the benefit gained from different modification schemes of lines replacement according to economic current density,reactive power compensation and lines replacement and reactive power compensation collaborative optimization applied in a real distribution feeder shows that the proposed model is more benefit and practical.

关 键 词：配电网 节能 导线更换 中低压无功配置 灾变遗传算法 

分 类 号：TM714[电气工程—电力系统及自动化]