Asset management framework applied to power distribution for cost-effective resource allocation

摘要

There is an international tendency toward increased demand for both cost-efficiency and high reliability ofrnpower distribution systems. To meet these demands, asset management methods, including reliability analyses, have been developed. These reliability analyses often utilize only mean values and hence do not takerninto consideration the consequences of severe events. This paper proposes a framework for more detailedrnquantitative risk analysis methods. The aim is to allocate resources more cost-effectively. The suggestedrnframework is exemplified and evaluated by implementing it within the analyses of a real power distributionrnsystem.rnThe main concept is to divide comprehensive projects into minor analyses and then in afinal step compilernthe results. The proposed analysis framework can be used independently or combined with earlier proposedrnvulnerability methods. The latter provides a two-dimensional analysis framework. It is shown that totallyrndifferent investment alternatives could be preferred depending on whether a traditional analysis methodrnusing average values is employed compared with the proposed analysis framework, which also considersrnsevere system states. This demonstrates the risks involved in using average values and the strength of thernproposed method. Furthermore, it is shown that already available information can be used for improvedrnasset management decision support. In addition, the performed case study gives combined reliability andrnweather statistics useful as reference material. Copyright © 2013 John Wiley & Sons, Ltd.