TIME SYNCHRONIZATION AND TRANSMISSION DELAY TIME CORRECTION METHOD BETWEEN THE MASTER AND THE SLAVE OF INTELLIGENT POWER DISTRIBUTION SYSTEM

摘要

According to the present invention, a method to correct time synchronization and transmission delay time between a master and a slave of an intelligent power distribution system comprises a first step of making a master side broadcast a first master time (T_m1), having time information of a server, to a slave side; a second step of synchronizing real time clock (RTC) of a slave side remote controller with the received first master time (T_m1); a third step of setting standby time (T_s) at the remote controller and executing the waiting time; a fourth step of unicasting first slave time (T_s1), where the standby time (T_s) information is described, to the master side; a fifth step of calculating transmission delay time (T3) of a communication network between the server and the remote controller using information on the received first slave time (T_s1); a sixth step of unicasting the calculated transmission delay time (T3) to the slave side; and a seventh step of correcting time of the real time clock (RTC) of the slave side remote controller via information on the received transmission delay time (T3).