| 摘要 |
PROBLEM TO BE SOLVED: To provide a power reception and distribution monitoring system capable of providing a trend monitoring function to obtain and storing analog value of a power reception and distribution facility in a short sampling period (for example, 1 second).SOLUTION: A monitor 3 holds a real time trend data while calcifying the data into a short-period held trend data 5 which is held for a fixed period of time T1 and a long-period trend data 11 which is held for a fixed period of time T3 longer than the fixed period of time T1. A piece of information of a trend necessary for monitoring on a monitoring screen is displayed as a current trend of the information on the basis of the short-period held trend data, and a trend of the information is displayed as a past trend on the basis of the long-period held trend data. |
