基于多参量模型的智能变电站二次设备状态评估方法及应用

为解决智能变电站二次设备运行状态评价体系建立与实际工程应用的难题,引入多参量信息融合的二次设备综合评价模型。提出不同类型二次设备的评价子项、评价参量及评估方法,建立通过监视装置稳态量变化来表征二次设备健康状态发展的趋势性评估模型和监视装置故障量特征来表征二次设备故障程度的损失性评估模型,提出了不同评估子项的工程量化指标。研发了智能变电站二次设备健康状态评估系统,并在500 k V智能变电站工程中试点应用。

Secondary equipment condition evaluation based on multi-parameter model for smart substations

In order to solve the problem of establishment and practical engineering application of secondary equipment operation evaluation system for smart substation, the comprehensive evaluation model of secondary equipment based on multi-parameter information fusion is introduced. The evaluation sub-items, evaluation parameters and evaluation methods are proposed to evaluate state of different types of secondary equipment. A trend assessment model is established to characteristic health status of secondary equipment by monitoring the change of steady state quantities, while a loss assessment model is established to characterize failure degree of secondary equipments. Engineering quantification index of different evaluation subitems are proposed. The secondary equipment health evaluation system is developed and has been applied in 500 kV smart substation project.