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This paper proposes a new approach using phasor measurement units (PMUs) to estimate real-time voltage stability margin for a load area supported by multiple tie lines. For the monitored tie lines, it can provide accurate real and reactive power transfer margins. Compared to a traditional Thevenin equivalent-based approach, the new approach is more tolerant of fluctuations in the phase angles of the...
Static var compensators (SVC) have been widely used to enhance voltage stability and power transfer. Dynamic control of large SVCs are able to maintain constant voltage over a wide range of operation. Allocation and size of SVCs are normally determined by off-line model analysis. However, under various operating conditions, e.g. change of system topology, redispatch of generation, load variation,...
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