POWER STORAGE SYSTEM AND GRID CONTROL SYSTEM
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United States of America Patent
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Issued Date -
Jun 20, 2024
app pub date -
May 10, 2021
filing date -
May 10, 2021
priority date (Note) -
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Abstract
A power converter interchanges electric power between a power storage device and a power grid as the power storage device is charged and discharged. A control device controls active power inputted and outputted between the power grid and the power converter. The control device generates a command value indicating an amount of output of active power for increase in grid frequency or an amount of input of active power for lowering in grid frequency, in accordance with an amount of frequency variation calculated from a frequency detection value of the power grid. Furthermore, the control device restricts output of active power in accordance with the command value when the frequency detection value is larger than a frequency reference value of the power grid and restricts input of active power in accordance with the command value when the frequency detection value is smaller than the frequency reference value.
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