A power distribution system equipment state maintenance decision-making method based on risk assessment

Abstract

The invention discloses a power distribution system equipment state maintenance decision-making method based on risk assessment. The method comprises the steps of collecting operation data of power distribution system equipment for state evaluation and risk evaluation, and finally formulating differential operation and maintenance strategies. The method has the advantages that the equipment risk cost is determined from the two aspects of the equipment health degree and the importance degree. When the health degree index is calculated, real-time data and historical data are comprehensively considered, and the defect of poor real-time performance in traditional risk assessment is overcome; when the importance degree is calculated, the importance degree of the equipment is measured from the perspective that the influence of a single equipment fault on the whole power distribution system is not limited to the consideration of the self loss of the single equipment fault. Furthermore, the operation and maintenance sequence and the operation and maintenance mode are determined on the basis of the relative risk cost, so that the establishment of the operation and maintenance strategy is simple, economical and visual, the advantage of differential operation and maintenance is embodied, and scientific reference can be provided for the establishment of the operation and maintenance strategy of the power distribution equipment.

Description

technical field [0001] The invention belongs to the technical field of operation and maintenance of power distribution equipment, in particular to a risk assessment-based decision-making method for condition maintenance of power distribution system equipment. Background technique [0002] The good operation and maintenance of distribution network equipment is a basic work to ensure the health of distribution network assets and realize reliable operation of distribution network. It is related to the continuous and reliable power consumption of the majority of power users and the safe and reliable operation of the power grid. In recent years, with the rapid increase of power distribution equipment, the distribution network structure has become increasingly complex, the workload of grass-roots operation and maintenance has continued to increase, and the cost of operation and maintenance has also increased. The traditional regular operation and maintenance mode can no longer meet...

AI Technical Summary

Problems solved by technology

When defining risk, it does not take into account the different losses caused by equipment failures of different severity

When calculating the risk level, historical data is generally used to predict the risk level of equipment at present, which is not real-time. In addition, most of them only conduct risk assessment on a single equipment, without considering the impact of a single equipment failure on the overall security of the grid

When using the risk assessment results to determine the operation and maintenance strategy, it can only qualitatively reflect the operation and maintenance strategy of power distribution equipment under specific working conditions, and lacks a universally applicable quantitative decision-making method

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