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Specificity of residential area transmission system is a highly meshed network with combined overhead and cable sections. In center of Zagreb town, control of transmission system is additionally complicated by a special operation of the 110 kV cable link between two power plants important for town's heat and electricity supply. Cable link has to be opened in order to control the power flows and to...
Optimal voltage scheduling procedure is usually a part of a day-ahead or hour-ahead planning phase, done by Transmission System Operator (TSO). It provides an implementation of a voltage control ancillary service that consists of a planning phase based on optimal power flow algorithm, realtime operation and accounting and settlement. Voltage control ancillary service model described in the paper is...
Zonal reactive power market model with implementation of optimal voltage scheduling is described in this paper. Proposed model is characterized by splitting the power system or a control area of an interconnected power system into autonomous voltage zones with sufficient reactive power reserves. Zones are selected using electrical distance method. In every zone a short-term auction based reactive...
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