engleski

Power system state estimation based on PMU measurements vs SCADA measurements

Several power system blackouts in the last decade indicate that the power system is being operated close to its stability limits and with lower security margins. Therefore, power system operators have to adopt power system control solutions to support the electric energy consumption increase, the electric energy market development, the renewable energy sources integration (RES) and the aim of greenhouse gases (GHG) reduction. Possible answer are Wide Area Monitoring, Protection and Control systems (WAMPAC), which are based on Synchronized Measurement Technology (SMT). A power system state estimator is one of the basic applications in power system control centres. It is expected that the increase of number of Phasor Measurement Units (PMUs) deployed in the power system would significantly contribute to the power system state estimation. This paper overviews the traditional state estimation theory and gives the application of the SMT in the state estimation. The enhancement of the state estimator’s performances will help the power system operator to make crucial decisions while operating the power system with large amount of the RES.

state estimation; synchronized phasor measurements; renewable energy sources; power system control; smart transmission grid

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