基于贪心算法的自适应解列断面自动搜索方法：(一)解列指标体系与算法设计

现有的解列断面搜索方法仅能考虑发电机同调、孤岛功率平衡等少数约束条件,在大系统的解列断面搜索过程中需要事先人工化简系统,无法实现从在线调度数据出发自动获得解列断面。文中以交直流系统的自适应解列控制为研究目标,提出了交直流电网解列指标体系,并设计了基于贪心算法的解列断面自动搜索方法。该方法根据系统发电机慢同调分群结果,确定解列孤岛数量及孤岛初始搜索节点,然后,对各孤岛一级相连节点进行评分,确定应该并入各孤岛的节点;最后,设计了解列策略校验环节。

Greedy Algorithm Based Automatic Searching Method for Controlled Islanding Surface of Power System Part One Index System of Islanding Control and Design of Algorithm

The existing searching methods for controlled islanding surfaces of power system have two problems: first, these methods can only consider a few constraints, such as the synchronization separation constraints of generators and the power balance constraints of the islanded power system; second, most methods require a lot of manual intervention during the searching process and are unable to automatically obtain the islanding surface from the online scheduling data. Taking the adaptive islanding control of AC/DC systems as the research goal, this paper proposes an index system for islanding control of AC/DC power systems, and designs an automatic searching algorithm for controlled islanding surface of power system based on the greedy algorithm. According to slow coherency grouping results of generators, the number of islanded power grids and the initial node of each grid are obtained. All first-level-connected nodes of each island are scored, then the node that should be incorporated into each island is determined by the scores. Finally, a checkout mechanism is designed to verify the proposed islanding control strategy.