Distribution cable decommissioning decision-making method based on whole life cycle cost conversion

Abstract

The invention discloses a power distribution cable decommissioning decision-making method based on whole life cycle cost conversion. The method comprises the following steps: establishing a cable equipment service age recovery model for maintenance decision-making; establishing a risk assessment model of the distribution cable; establishing a whole life cycle cost model of the distribution cable; based on the risk assessment model and the whole life cycle cost model, establishing a risk assessment and cost analysis model under different maintenance modes; and formulating a distribution cable maintenance or decommissioning strategy by adopting a risk income and cost ratio criterion based on the risk assessment and cost analysis model under different maintenance modes. The maintenance and replacement strategy of the power distribution cable is comprehensively formulated through the whole life cycle cost and risk assessment, so that a proper maintenance plan can be formulated, the operation reliability of the power distribution cable is improved, and the problems of insufficient maintenance and excessive maintenance existing in traditional preventive maintenance are avoided; moreover, the cost of the whole life cycle of the distribution cable can be greatly reduced, and the operation reliability and economical efficiency of the power distribution cable are effectively improved.

Description

technical field [0001] The invention belongs to the field of power cable engineering, and in particular relates to a decision-making method for decommissioning of distribution cables based on full life cycle cost conversion. Background technique [0002] Distribution cables are one of the most important equipment in the process of power transmission. They have the advantages of high power supply reliability and low possibility of electric shock. Underground distribution cables gradually replace overhead distribution lines and have become the mainstream of future cable development. Due to abnormal cable manufacturing and installation or long-term insulation aging and deterioration, insulation breakdown will eventually occur, which is a major hidden danger to the safe operation of the power grid. Therefore, the decommissioning decision should be made on the status of distribution cables to provide guidance for the operation and maintenance of power cables. [0003] At present...

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Problems solved by technology

[0003] At present, the determination of the maintenance method of distribution cables is mostly based on the reliability status assessment, and it is not carried out from the perspective of the whole life cycle management. Huge waste of resources, causing a lot of waste of resources

[0004] In addition, current research rarely considers the influence of different maintenance methods on the correction of distribution cable failure rate, so there are few maintenance decision-making models that can make reasonable decisions more appropriately.

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