Power cable hot spot positioning method and device with built-in temperature measurement optical fiber

The invention relates to the technical field of power cables, and discloses a power cable hot spot positioning method and device with built-in temperature measurement optical fibers, which is used for improving the hot spot positioning precision of a cable built-in optical fiber temperature measurement system, does not need to add extra devices, inhibits noise and errors in the optical fiber temperature measurement system, and improves the positioning precision of the hot spot. Compared with a single data smoothing processing method, the segmented processing of the temperature change curve has better stability, so that the error fluctuation range of the cable hot spot position is reduced, and the monitoring precision can be effectively improved. 本发明涉及电力电缆技术领域，公开了一种内置测温光纤的电力电缆热点定位方法及装置，本发明用于电缆内置光纤测温系统提升热点定位精度的方法，不需要增加额外的装置，抑制光纤测温系统中的噪声和误差，和单一的数据平滑处理方法相比，温度变化曲线分段处理具有更好的稳定性，从而减少了电缆热点位置的误差波动范围，可以有效提高监测精度。