Schwan, Michael; Schilling, Klaus; Kaiser, Norbert
SIEMENS
In today’s electricity markets, cost efficiency is becoming ever more important. But also quality of supply is a key characteristic for customers. As more and more customer processes are depending on electricity, also the quality requirements are increasing. So, finding the optimal balance between cost efficiency and quality of supply is a major task for network operators.
Changes in maintenance and reinvestment strategies lead to immediate economic results and are therefore a favorable choice for cost savings.
On the other hand, changing maintenance and reinvestment strategies involves the risk of significantly compromising supply reliability, as failure rates of critical components might raise due to increased component age and decreased component condition.
Asset management methods consider all these different aspects and try to find an optimal solution in the given framework. This paper presents an approach considering both component importance and component condition in a practiceoriented way concerning data extent and availability. The assessment of both condition and importance delivers a priority ranking of the network components, which can then be transferred into maintenance schedules according to the chosen strategies and available resources.
This approach already was applied successfully to different networks. In this paper, key results from the practical experiences in both high and medium voltage networks are presented.
In general, this method allows the identification of critical components and the definition of maintenance
plans based on objective analyses of network and component aspects.
