2013 年 133 巻 11 号 p. 910-917
Installation of wind power into power systems has been limited due to the problem of frequency regulation during light-load periods at night. As a solution, frequency regulation by heat pump water heaters had been proposed and tested. In this paper, the demonstration test with three heat pump water heaters used in practical houses is described. The result shows that total power consumption had droop characteristic against frequency deviation, which means that the heat pump water heaters contribute to power system frequency regulation.
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