Research on the inspection period of non-attended power substation by the Monte-Carlo method

In order to ensure the effectiveness of inspection work of substation, based on the defect information from the components of power substation, such as power transformer, circuit-breaker, TA, TV and disconnectors, the simulation model to calculate the inspection period is formulated with the Monte-Carlo simulation. fault tree analysis and analytic hierarchy process method. The inspection period under different reliability levels are calculated. The inspection period at different reliability requirement is calculated and the simulation calculation method to determine the inspection period is proposed. This method simulate the time randomness of various device defects based on Monte-Carlo simulation, it is suitable for condition based maintenance, and provides a tool to determine the inspection period for a non-attended power substation.