Alarm and early warning method for cable temperature

The invention provides a cable temperature alarm and early warning method, which gives an alarm when the cable temperature T exceeds the temperature upper limit, gives an early warning when the cable temperature T is close to the temperature upper limit, obtains the difference value between the cable temperature and the temperature upper limit in advance, facilitates the subsequent control of cable operation, prepares to reduce the load of the cable in advance or cuts off the power supply of the cable, and improves the safety of the cable. And the safety is improved. 本发明提供一种电缆温度的报警和预警方法，在电缆温度T超过温度上限时进行报警，在电缆温度T接近温度上限时进行预警，提前获取电缆温度与温度上限的差值，便于后续控制电缆操作，提前准备降低电缆的负载或断开对电缆进行供电，提升安全性好。