中压架空线开关配置三阶段优化算法  

Three-Stage Optimization Algorithm for the Sectionalizing Switch Placement of a Medium Voltage Overhead Line

作　　者：廖一茜 张静 王主丁[1] 张永斌 LIAO Yixi;ZHANG Jing;WANG Zhuding;ZHANG Yongbin(State Key Laboratory of Power Transmission Equipment ＆ System Security and New Technology（Chongqing University）,Shapingba District,Chongqing 400044,China;State Grid Nanchang Electric Power Company,Nanchang 330000,Jiangxi Province,China;State Grid Henan Electric Power Company,Zhengzhou 450000,Henan Province,China)

机构地区：[1]输配电装备及系统安全与新技术国家重点实验室(重庆大学),重庆市沙坪坝区400044 [2]国网江西省电力公司南昌供电分公司,江西省南昌市330000 [3]国网河南省电力公司,河南省郑州市450000

出　　处：《电网技术》2018年第10期3413-3419,共7页Power System Technology

摘　　要：分段开关优化问题属于非线性、不可微的组合优化问题,为此提出了一种新的启发式算法以解决中压架空线开关优化配置问题。文中模型构造了包含两个供电可靠性指标的多目标函数,即将系统平均停电持续时间（system average interruption duration index,SAIDI）和缺供电量（expected energy not supplied,EENS）归一化后相加,并设置了可靠性指标最小提升效果和最大开关费用等约束。阐述了开关位置灵敏度最大的单开关定位通用指标,并据此提出了中压架空线开关配置三阶段优化算法。第一阶段根据馈线段有/无联络,快速直观定位合理或优化的开关候选安装位置;第二阶段逐一确定各分段开关的初始安装位置;第三阶段采用迭代方法进一步优化调整新增开关的安装位置。算例验证了三阶段优化算法的合理性。The optimization placement of sectionalizing switches is a non-linear, non-differentiable and combinatorial problem, and a new heuristic algorithm is proposed in the paper for the sectionalizing switch optimization placement of a medium voltage overhead line. In the presented model, a multi-objective function is constructed, which involves two normalized power supply reliability indexes, i.e., system average interruption duration index（SAIDI） and expected energy not supplied（EENS）. The corresponding constraints include the minimum improvement effect of power supply reliability indexes and the maximum allowable switch cost. A general criterion of maximum switch position sensitivity is presented to locate a single switch, and thus a three-stage optimization algorithm is proposed for the sectionalizing switch placement of a medium voltage overhead line. In the first-stage, based on the line tie connection, reasonable candidate switch placement positions are intuitively determined; in the second-stage, initial placement positions of sectionalizing switches are found one by one; in the third-stage, an iterative method is used to adjust the placement positions of sectionalizing switches. The case studies show the rationality of the proposed three-stage optimization algorithm.

关 键 词：中压架空线 开关优化配置 开关定位判据 开关候选位置 三阶段优化算法 

分 类 号：TM721[电气工程—电力系统及自动化]