| 摘要 |
PURPOSE:To monitor and control power demand effectively and quickly by making power demand prediction by the use of an in-measurement actual demand value and a predicted demand value recursively which is found from a plurality of measurement values obtained by the measurement that was made before that. CONSTITUTION:In case a predicted demand value Rn is found from an actual demand value (measured value) Pn, suppose from a figure indicated here the last measured value Pn-1, the last-tub-one measured value Pn-2, etc., are referred to, the actual demand line 5 is in the increasing tendency. A predicted demand value Rn is found from plural measured values with a straight line found by a recursive technique as a predicted straight line 3. On the basis of a contract demand value S a marginal demand value L and a target demand value Q are set, where the 1st stage alarm is restored when the predicted demand value Rn is not more than the target demand value Q. When the predicted demand value Rn gets in the 2nd stage alarm region and the measured value Pn exceeds a target demand line 4, the 2nd stage alarm is issued. The power demand can thereby be monitored and controlled effectively and quickly. |
