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This paper proposes a voltage and reactive power control methodology, which is motivated towards implementation in the KEPCO power system. The main voltage control devices are generators in continuous type and make sure capacitors and reactors in discrete type. Effects of control devices are evaluated by pure reactive power reserve that is exactly to guarantee generator's reactive power margin for...
Recently, massive power outages in Europe and North America were caused by unbalances in reactive power, resulting in voltage collapse. In order to solve these problems in many advanced countries, voltage/reactive power control system developed for domestic power system and voltage/reactive power control system are operating. In terms of voltage stability voltage, Korea recognized the necessity of...
The paper proposes two automatic voltage controllers for the South Korean power system. Simulation results from detailed Korean power-flow models show that the controllers can provide significant improvements in security, quality and efficiency of power system voltage monitoring and control. Operating within a time scale ranging from tens of seconds to a few minutes, the controllers can act upon voltage...
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