Voltage monitoring control device and voltage monitoring control method
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United States of America Patent
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May 30, 2017
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Jun 26, 2013
filing date -
Jun 26, 2013
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Abstract
A centralized voltage control device connected to a first local voltage control device adjusting the control amount every second cycle such that a voltage of a transformer-type voltage control apparatus is maintained within a range between voltage upper and lower limit values updated every first cycle and a second local voltage control device adjusting the control amount of a reactive-power-modified voltage control apparatus every third cycle, wherein the centralized voltage control device includes a load and power-generation-amount estimation unit estimating a load and power-generation-amount distribution every first cycle under condition of a mean load and mean power generation, condition of a minimum load and maximum power generation, and condition of a maximum load and minimum power generation, a voltage-fluctuation-band estimation unit estimating a voltage fluctuation band, an optimal-voltage-distribution determination unit determining a control target value of the first local voltage control device, and a voltage upper-and-lower-limit-value determination unit.
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