| 摘要 |
<p>A management system (28) comprises a plurality of power management units (32, 36, 38, 40, 42) which divide power information of an overall facility group into a plurality of management areas and manage the respective power information in a distributed manner; and a system controller (30) which is respectively connected to the power management units (32, 36, 38, 40, 42) with connection elements and which executes power management of the overall facility group. When the update time of the power information which is transmitted to the system controller (30) has not been updated beyond a predetermined confirmation interval, occurrence of a communication abnormality is judged and an abnormality signal is output, and if the power information includes failure information while there is no communication abnormality, an alert signal is output.</p> |
