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Following the liberalization of the electricity market, network operators face new conditions and challenges: increasing cost pressure and restructuring call for new priorities with regard to maintenance strategy of the network. As a result, maintenance has turns into a multi-objective optimization task.
The choice of the right maintenance strategy is an important but also difficult topic for every energy utility. The difficulty consists in the huge number of interacting cost parameters. The present paper shows how from the biology well known process is adapted as an optimization algorithm in order to handle the parameter diversity. Outgoing from the definition of Life Cycle Cost and a method for...
This paper presents a new optimization approach of maintenance strategy for equipment in a transmission and distribution (T&D) system. In this approach, a present and future equipment performance is estimated by using monitoring data, and impacts of performance in each equipment on a whole T&D system are evaluated. By minimizing the impacts, suitable maintenance procedures and timing are derived...
Since the liberalization of the energy markets in the late 90s of the last century, the application of gas insulated substation (GIS) becomes more important for the energy supply companies. With the use of gas insulated substations energy supply companies want to reduce their operating and maintenance costs. In this paper a typical German 110-kV transmission and distribution system, which is composed...
In the last years two topics are often in the discussion about energy supply companies. Special attention has been drawn by the topics of “Life-Cycle-Cost (LCC)” and “Risk Management” since the liberalization of the energy market in the late 90s of the last century. In Germany large parts of the 110 kV system were built up in the 60s and 70s, for this reason most of the assets increasingly reach their...
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