本发明公开了一种切换设备剩余寿命的确定方法及系统。将设备退化过程表示为随机过程，所述退化量为所述设备在运行过程中，所述退化量用于表示所述设备性能发生退化的参数；在时刻t所述设备的运行状态的集合，所述设备在时刻t的运行状态；根据所述设备在时刻t的运行状态建立状态切换过程的模型和所述设备运行过程的参数；根据所述设备退化过程建立退化过程模型；根据所述退化过程模型、状态切换过程的模型和所述设备运行过程的参数确定所述设备的剩余使用寿命。通过随机过程的数据建立状态切换过程的模型和所述设备运行过程的参数，提高了设备的剩余使用寿命的计算结果的精确度。

The invention discloses a method and system for determining the remaining life of a switching device. The equipment degradation process is represented as a stochastic process, the degradation amount being used to represent the parameters for degradation of the equipment performance during operation of the equipment. A collection of the operating states of the equipment described at time t, and the operating states of the equipment described at time t; The model of state switching process and the parameters of the operation process of the equipment are established according to the operation state of the equipment at time t. Establish a degradation process model based on the described equipment degradation process; The remaining service life of the described equipment is determined according to the described degradation process model, the model of the state switching process and the parameters of the operation process of the described equipment. Through the data of random process, the model of state switching process and the parameters of operation process of described equipment are established, which improves the accuracy of calculation results of remaining service life of equipment.