基于关联规则算法的直流输电受端电网断面过载调整方法研究

特高压直流闭锁故障后受端电网易出现断面过载，针对这一问题，提出了一种基于关联规则算法的断面过载调整方法。首先进行多次特高压直流闭锁故障仿真，提取仿真结果中的断面过载调整策略及断面状态变化记录数据，进行数据处理并形成事务数据库，采用FP-growth算法构建FP-tree并挖掘故障事务数据库中的频繁项集。同时，对关联规则进行前后项约束，前项约束为调整策略数据，后项约束为断面状态变化数据，得到满足最小置信度的断面过载调整策略。最后以锦屏-苏州直流双极闭锁故障仿真为例，验证了本文方法的有效性。

Overload Adjustment Method of DC Transmission Receiving-end Power Grid Transmission Section Based on Association Rules Algorithm

Focused on the problem of transmission section overload in receiving-end grid after blocking fault of UHVDC （ultra-high-voltage direct current） transmission line， a method of section overload adjustment based on association rules algorithm is proposed. Firstly， UHVDC blocking fault simulations are carried out， adjustment strategies data of the overload and records data of transmission section state change in the simulation results are extracted， and then the data are processed and a transaction database is formed. The FP-growth algorithm is adopted to build FP-tree and mine frequent item-sets in the fault transaction database. At the same time， the antecedents and consequents are restrained， antecedents are restrained to be adjustment strategy data and consequents are restrained to be the section state change data， and the overload adjustment strategies that meet the minimum confidence are obtained. Finally， the Jinping-Suzhou DC bipolar blocking fault simulation is taken as an example to verify the effectiveness of this method.