Real-time comprehensive fault rate calculation method and system for power distribution equipment

Abstract

The invention discloses a real-time comprehensive fault rate calculation method and system for power distribution equipment, and the method comprises the steps: carrying out the statistics of fault factors of power distribution equipment in a to-be-evaluated region, and dividing the fault factors into two types: gradient fault factors and sudden fault factors according to the intensity of the impact on the fault rate of the power distribution equipment from the fault factors; calculating the fault rate lambda'of the power distribution equipment under the influence of the gradient fault factoraccording to the online monitored operation and maintenance data of the power distribution equipment to be evaluated and the synergistic effect between different gradient fault factors; calculating the sudden potential fault rate lambda ''of the power distribution equipment according to the real-time intensity, the equipment level and the grid structure level of the sudden fault factor of the environment where the to-be-evaluated power distribution equipment is located; and calculating the real-time comprehensive fault rate lambda re = lambda '+ lambda' 'of the to-be-evaluated power distribution equipment. According to the method, the influence of equipment operation risks, the intensity of sudden fault factors and equipment and grid structure levels on the potential fault rate is considered, and the real fault rate of the equipment can be reflected more accurately.

Description

technical field [0001] The invention belongs to the technical field of distribution network operation and maintenance, and relates to a method and system for calculating a real-time comprehensive failure rate of power distribution equipment. Background technique [0002] The operating environment of the distribution network is complex, and the distribution equipment is susceptible to various failures due to the influence of the environment. The original risk assessment using the historical failure rate of the equipment cannot effectively reflect the real-time status of the equipment. At the same time, the existing real-time failure rate assessment model of power distribution equipment generally uses part of the online monitoring data to calculate the operation risk of the equipment, and does not fully consider the impact of sudden environmental factors, equipment level and grid structure level on the potential failure rate of equipment. Therefore, these methods cannot accura...

AI Technical Summary

Problems solved by technology

The above research uses the main influencing factors to correct the failure rate. Only when a failure occurs under the influence of these factors, this method can effectively calculate the real-time failure rate of the equipment; at the same time, it is difficult to accurately determine the undetermined coefficient in the real-time risk assessment model based on the health index

More importantly, these studies generally do not fully consider the impact of sudden environmental factors, equipment levels, and grid structure levels on the potential failure rate of equipment.

Images