Journal
IEEE TRANSACTIONS ON POWER SYSTEMS
Volume 18, Issue 1, Pages 121-127Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TPWRS.2002.805018
Keywords
emergency control; load modeling; protective relaying; voltage stability; voltage-stability index
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This paper presents a concept for local monitoring of the onset of voltage collapse, protective, and emergency control in the presence of voltage-sensitive loads. The onset of voltage collapse point is calculated based on the load characteristics and simulated voltage and current phasors measurements, which are provided by a network of phasor-measurement units. If the stability margin is small and the reactive-power reserves are nearly exhausted, then controls to steer the power system away from the critical point will be activated.
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