基于故障率及设备重要程度的变压器风险矩阵模型

The Risk Matrix Model of Transformers Based on Failure Rate and Equipment Importance

采用故障树的方法计算电力变压器故障率，基于设备重要程度、资产损失程度和设备故障率三要素提出了评估变压器风险的矩阵模型。以某一地区84台220kV变压器作为算例，计算其故障率及重要程度，根据设备状态及故障率比较，提出了设备状态的故障率分界点及设备重要程度分界点，建立了与设备重要程度和故障率相关的220kV变压器风险矩阵模型。

Calculating the fault rate of transformers with the method of fault tree, and based on the three factors, namely the importance of equipments, loss of assets and failure rate, this paper proposes a matrix model to assesse the risk of transformers. Taking the 84 transformers of 220 kV in a certain region as an example, calculating the loss of assets and importance of equipments, and according to the comparison of equipment status and failure rate, the paper determines the demarcation points for failure rate of equipment status and the equipment importance, establishing the risk matrix model of these 220 kV transformers.