基于路径描述的馈线分区N-1可装容量计算方法  

Path Description Based Calculation Method for Available Capacity of Feeder Partition Satisfied with N-1 Security Criterion

作　　者：孙明[1] 董树锋[1] 夏圣峰[2] 吴浩[1] 

机构地区：[1]浙江大学电气工程学院,浙江省杭州市310027 [2]国网福建省电力有限公司福州供电公司,福建省福州市350009

出　　处：《电力系统自动化》2017年第16期123-129,共7页Automation of Electric Power Systems

基　　金：国家高技术研究发展计划(863计划)资助项目(2014AA051901)~~

摘　　要：评估馈线供电能力是保障馈线可靠运行的重要手段。文中提出了一种基于路径描述的馈线分区N-1可装容量计算方法。首先,将同一电压等级配电网以自动/手动开关装置为边界划分馈线分区,视为负荷节点;采用所有负荷节点及其所有可能供电路径的集合描述配电网拓扑结构。随后,以路径状态为变量,建立了馈线N-1安全校验的0-1线性规划模型。针对电网营销部门的实际数据需求,以路径状态和馈线分区可装容量为变量,进一步建立了用于馈线分区N-1可装容量计算的混合整数线性规划模型。最后,以某省会城市实际运行的某一10 k V馈线组为例,验证了所提算法的实用性和有效性。Evaluation of feeder capacity is an important means to guaranteeing reliable operation of feeder. A method is proposed to calculate the available capacity of feeder partition satisfied with N-1 security criterion. Firstly, distribution networks at the same voltage level are divided into feeder partitions with automatic/manual switching devices as the boundary, which can be regarded as load nodes. The topology of the distribution network is described by all load nodes and all sets of power supply paths associated with load nodes. Taking path states as variables, the 0-1 linear programming model is developed to analyze N-1 security verification of feeders.To meet the practical marketing demand of the power supply company, by taking path states and the available capacity of feeder partition as variables, the mixed integer linear programming model is proposed to calculate the available capacity of feeder partition satisfied with N-1 security criterion. Finally, the calculation results of a practical 10 k V feeder group in a provincial capital show that the proposed method is practicable and effective.

关 键 词：供电路径 N-1安全校验 线性规划 可装容量 

分 类 号：TM732[电气工程—电力系统及自动化]