MONITORING SYSTEM FOR POWER SYSTEM

PURPOSE:To permit the recognition of the renewal of an indication in a single- line diagram intuitively by a method wherein a CRT converting means is provided with a symbol editing means, showing the direction and the scale of a tide by changing either one or both of the indicating configuration or the color of a transmission line and a transformer one after another. CONSTITUTION:An electronic computer 4 is constituted of a data input process 6, a symbol editing process 7a, a switch file 8, a measuring value file 9, a variable format file 10a and a fixed format file 11a while a symbol editing means edits CRT data, renewing the indication of the indicating configurations of a transmission line and a transformer continuously and repeatedly time by time. When the symbol editing process 7a is stopped, the renewal of the indication of the indicating configuration or the color of the transmission line and the transformer on a single-line diagram is not effected. Accordingly, the renewal of the indication of the single-line diagram may be recognized intuitively.