REMOTE CONTROLLER

摘要

A remote supervisory unit, in particular a remote supervisory control unit which makes it possible the clock circuit of a master station and those of slave stations to be synchronized through only an ordinary signal-path and code-transmitting/receiving circuit for remote supervisory control, without using a special signal-path and code-transmitting/receiving circuit. The construction of the unit is as follows: in a unit for controlling and supervising equipment provided in slave stations (1, 2) from a master station (0), a remote supervisory control unit comprising signal paths (Lu, Lu) with a predetermined transmission delay time (//cu, //cu) for transmitting signals between and the slave stations, transmitting/receiving circuits (TRu, TRu, TRu), provided in the master station and the slave stations, respectively, for transmitting and receiving the signals to and from the signal paths, and clock circuits (CLu, CLu, CLu) provided in the master station and the slave stations, respectively, for synchronizing the timing of the master station and slave stations, wherein a time-setting signal (SET, BT) is transmitted from the master station when the clock circuit (CLu) reaches a predetermined time (tu), the clock circuits (CLu, CLu) are set to the time of the predetermined time plus the transmission delay time (//cu, //cu) when receiving the timesetting signal (SET, BT), and then the result (OKu, OKu) of judgement whether the time-setting signal is a predetermined pattern or not is transmitted to the master station. The invention can be used for remote supervisory controlling all equipment in an electric power system and for similar purposes.