摘要
输电断面集中体现了电网的薄弱环节,是系统运行监控的重点。从电力网络演化发展的局域特征出发,提出了一种融于层次分裂过程的多类型输电断面同步搜索方法。基于电网局域间联络线路拓扑连接弱功能作用强的特点,定义输电线路的电气耦合强度指标。通过反复移除电气耦合强度最大的输电线路来分裂电网,产生联络线簇。组合联络线簇搜索出不同类型输电断面,并基于电网局域内部连接稠密度的分布特性,提出最小局域用于判别分裂过程是否终止。IEEE39节点系统标准算例和某省网实际算例的结果表明,所提方法不依赖于人工经验,能够有效搜索出不同安全主题关注的不同类型输电断面。
Transmission sections greatly embody weakness of power grids and are focus of monitoring and control in power system operation. From perspective of power grid evolution, a method is proposed to search multi-type transmission sections simultaneously in process of splitting electrical networks. Tie-line groups are identified by removing edges iteratively from electrical network to split it into sub-networks. By combination of tie-line groups, different types of transmission sections are determined. The removed edges are decided by electrical coupling strength index, considering that tie-links of networks are significant in function while weak in structure. After each removal the index is recalculated. Also, a new split process termination criterion is presented based on distribution of connection denseness in sub-networks. Numerical results with IEEE-39 system and a provincial system show that the proposed method can discover multi-type transmission sections aimed at different security themes simultaneously.
出处
《电网技术》
EI
CSCD
北大核心
2017年第2期566-573,共8页
Power System Technology
基金
教育部中央高校基本科研业务费专项资金资助项目(2082604184073)~~
关键词
局域
联络线簇
层次分裂
电气耦合强度
电压主导度
local area
tie-line group
hierarchical split
electrical coupling strength
voltage dominant degree
