| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method and program for calculating zone load of a distribution line capable of reducing estimated errors of the zone load by making a correction using past data for two measured values having a strong mutual relationship without being affected by the unbalance of a distribution system. <P>SOLUTION: In this method for calculating the load for each zone by calculating current values between measured values of voltage and phases based on voltage at a plurality of portions of the distribution line, the measured values of the phases, and impedance of the distribution line, obtaining a difference between the current values flowing in the calculated measured points and the current values flowed out from the calculated measured points, and distributing balance current values to divided zones of the distribution line by an opening/closing machine, estimated formulas regarding a relation between send current measured value during the past prescribed period and voltage letdown measured value between the respective measured points are obtained respectively, the sent current at the current point is assigned to the respective estimated formulas, and the estimated value of the voltage letdown is obtained, thus correcting the respective measured values. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
