基于状态信息相关性的变电所继电保护策略研究

Research on Relay Protection Strategy of Substation Based on Correlation of State Information

针对变电所继电保护装置状态评估的灰色和模糊问题,提出了一种基于状态信息相关性和先验关联相结合的分析方法。利用实际变电站运行维护中的缺陷信息数据,针对不同厂家、不同设备类型、运行时间和维护记录对继电保护装置状态的影响进行评估和预测,研究得到了7类关联规则,根据关联规则中的具体结果为维修和运行计划提供有力的科学依据。该结果为国家电网公司某地区变电站继电保护装置的评估提供了监测工具。

Aiming at the grey and fuzzy problems in the status evaluation of relay protection devices in substations,an analysis method based on the combination of state information correlation and prior correlation is proposed.The impact of different manufacturers,different equipment types,operation time and maintenance records on the status of relay protection devices is evaluated and predicted by using the defect information data in actual substation operation and maintenance.Seven types of association rules were studied,and the analysis provided strong scientific basis for maintenance and operation plans according to the specific results in the association rules.The results provide a monitoring tool for the evaluation of relay protection devices in a regional substation of State Grid Corporation of China.