| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an electric power monitoring system for making it easy to obtain a change in generated energy during each of prescribed totalization periods. <P>SOLUTION: A power conditioner 51 converts DC electric power input thereinto from a solar cell 50 into an AC current to output it to the commercial system side while measuring generated energy of the solar cell 50 to output it to a control part 2c. The control part 2c includes: a sold/bought electric energy measurement means 2d for determining whether electricity is being sold or being bought based on electric energy usage through each of branch breakers Bmn and input from the control part 2c, and on the generated energy of the solar cell 50 to measure sold energy if electricity is being sold; an intra-period sold/bought electric energy calculation means 2e for finding intra-period sold electric energy within the respective totalization periods each time the prescribed totalization period elapses based on the results of measurement made by the measurement means 2d, and an image data generation means 2f for together comparing intra-period sold electric energy found as to a plurality of totalization periods to generate image data for displaying a message showing the results of comparison while transmitting the image data to a terminal device. <P>COPYRIGHT: (C)2008,JPO&INPIT |
