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Wind energy is abundantly available both onshore and offshore. As a response to the present climate crisis focus on wind energy is increasing due to its renewable and environmentally friendly characteristics. Due to social and political reasons the trend has been shifted largely from onshore to offshore wind farms. Offshore wind energy production faces a wide range of new challenges in design, development,...
Lifetime estimation of power system components is an important basis for e.g. maintenance and replacement decisions at the power utilities. Considering the large number of wood poles in the power system infrastructure a proper asset management is very important for controlling the risk exposure the utilities are facing. Poor management due to lack of information about pole condition may over time...
The paper presents a framework for using risk analysis together with multi criteria decision making methods as an analysing strategy for evaluating and prioritising different types of maintenance and renewal projects within a power company. Projects are being subject to risk evaluation related to a set of qualitative criteria, together with calculation of economic key figures such as the net present...
Protection and control systems play important roles in power system operation and for the reliability and security of supply. This paper presents main results from a study of incorrect operations of protection and control systems on the voltage levels 1 - 420 kV in Norway, comprising mainly false and missing operations. The statistics for the period 1999 - 2003 show that false or unwanted operation...
The paper describes a risk-based approach for screening, prioritising and timing of maintenance and renewal projects in distribution networks. Various methods/analyses are used for handling different aspects of this planning problem. The overview of the network is achieved through investigation of performance indicators and fault history, and the classification and ranking of relevant projects is...
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