| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To level off power load on a week-by-week basis. <P>SOLUTION: An energy storage system includes a heat-accumulating tank and a storage battery, and stores generated power from a photovoltaic power generator in the heat-accumulating tank or the storage battery to level off a power load. The energy storage system includes a database which associates past daily weather and temperature forecast data with past daily power load record data to store the associated data, a forecast data acquisition means which acquires data of weather and temperature forecast of one week since the current day, a similar data extraction means which extracts from the database the past daily weather and temperature forecast data similar to data of weather and temperature forecast of one week from the current day, and a control means which reads out the past daily power load record data associated with the extracted past daily weather and temperature forecast data to regard the past daily power load record data as data of power load estimation of one week from the current day, and based on the data of power load estimation, carries out control over charge and discharge of the storage battery and heat source operation control for accumulating heat in the heat-accumulating tank. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
