Method for generating long-term maintenance strategy of electric distribution system in view of ageing properties of element

Abstract

The invention provides a method for generating a long-term maintenance strategy of an electric distribution system in view of ageing properties of an element. The method comprises the following steps of: step 1, collecting information to form a maintenance basic database for electric distribution; step 2, establishing a long-term maintenance optimizing model of the electric distribution system; and step 3, calling the maintenance basic database formed in the step 1, substituting the maintenance basic database into the long-term maintenance optimizing model of the electric distribution system in the step 2, and solving by using a branch-and-bound method to obtain the long-term maintenance strategy of the electric distribution system in view of the ageing properties of the element. From a view point of the electric distribution system, based on a time-variation ageing model of transformer and breaker equipment, the method provided by the invention can be used as a support of an electric distribution automatic system to effectively establish the long-term maintenance strategy of the electric distribution system by taking a minimum sum of a maintenance cost in a maintenance period and a cost caused by faults as a target function, considering losses to users and electric power companies which are caused when the equipment is stopped in the process of maintaining, and comprehensively considering the influence of the maintenance on the improvement of a failure rate of the equipment and the reliability of the system.

Description

technical field [0001] The invention belongs to the technical field of electric engineering, and in particular relates to a maintenance planning control strategy method, which is suitable for the long-term maintenance arrangement of power distribution equipment in a power system. Background technique [0002] The maintenance strategy of the power system plays an important role in the reliable operation of the system and can prolong the operating life of the entire system. Generally speaking, the power system maintenance mode has mainly gone through three stages: post-accident maintenance (Corrective Maintenance), preventive maintenance (Preventive Maintenance) and predictive maintenance (Predictive Maintenance). [0003] The traditional power system maintenance mainly focuses on the maintenance of power generation system, transmission system, and transmission system, while there are relatively few studies on the maintenance of power distribution system. However, as an impor...

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Problems solved by technology

[0004] Due to the complexity of the failure model and the diversity of power distribution equipment, traditional power distribution system maintenance generally only considers one maintenance activity, and does not consider the diversity of equipment states in the actual operation process; and due to the lack of suitable input data and theoretical The difficulty of the method in practical application, traditional power distribution system maintenance and system reliability assessment are considered separately

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