APPARATUS AND METHOD FOR PERFORMING REAL-TIME EVALUATION PROCESS OF UNDERGROUND POWER CABLE, ESPECIALLY MEASURING CONDUCTIVE TEMPERATURE, CABLE SHEATH CIRCULATING CURRENT, AND PERIPHERY TEMPERATURE OF CABLE IN REAL-TIME

摘要

PURPOSE: An apparatus and a method for performing a real-time evaluation process of an underground power cable are provided to produce the predictive amount of power by measuring correctly temperature and current of the underground power cable. CONSTITUTION: A cable current acquisition unit(3) measures current of a cable conductor. A sheath current acquisition unit(4) measures circulating current of a sheath. A cable temperature acquisition unit(5) measures temperature of a cable sheath or temperature of a jacket. An external temperature acquisition unit(6) measures external temperature of a cable. A communication unit(7) connects the current acquisition unit and the temperature acquisition unit to a main computer(9). The main computer is connected to the communication unit in order to calculate the temperature of the cable conductor and produce the predictive amount of power.