Investigation of economic issues of live line maintenance

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Supervisor:
Dr. Tamus Zoltán Ádám
Department of Electric Power Engineering

Live line working (LLW) is a modern technology without the interruption of electricity supply. Applying this practice decreases the number and duration of intermissions current, should the intermission be due to planned intervention.

Due to greater competition is growing claim in the liberalized market a way as to reduce the duration of distruption for consumers. Due to the increasing size of cross-border trade is looking for a procedure that the limited capacity is not restrict more by the maintenace. In case of the limited capacity the msrket participants is suffered significant social welfare losses. To solve this problem the LLW is suitable method for which you do not need shut down this line for maintenace.

This thesis is presented the benefits of this work. I analyze the using of this method in case of the cross-border trade due to the economic aspect of the Slovak-Hungarian market coupling.

Fristly, in this thesis I present the LLW working method, the technical and economic benefits for High voltage power. In the next chapter is presented the power exchange and the market coupling benefits. After I present the method of calculating cross-border capacities, and finally I compare the limited capacity caused by the trade, in case of congested and non-congested hours. Which damages can be caused the social welfare, when the capacity is limited.

In the last chapter I calculate the social welfare difference losses is caused by the cross-border capacity in normal and LLW working method. 

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