Development of asset management support tools for electric power equipment
2012
To establish maintenance strategies to reduce costs is one of the crucial issues of electric power industry. So asset management support tools are expected to be developed. The authors have developed support tools for asset management of several kinds of electric power equipment, such as transformers, gas-insulated switchgears, overhead transmission lines. In this report, some of the tools are explained and some important points to develop those tools based on the authors experiences during development processes of those tools. Those tools are aimed to give the minimum maintenance cost over target time interval such as 30 years based on the maintenance cost data. The authors also develop an evaluation model for typical maintenance methods, CM (corrective maintenance), TBM (time based maintenance) and CBM (condition based maintenance) which utilizes several input information, such as equipment age distribution, life time probability density distribution and accuracy of life time diagnosis. This model can evaluates annual and average maintenance cost during operation period of equipment, and these maintenance methods are compared each other.
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