Point type fluorescent temperature sensors for switchgear are more reliable than infrared manual temperature measurement methods

Due to the characteristics of high voltage, strong magnetic field, and enclosure of substation equipment, traditional temperature monitoring methods often cannot achieve good results. The method of manual scheduled inspections can easily lead to missed reports. Temperature indicating wax sheets should not be used in structurally complex switchgear and other equipment. The thermocouple method is susceptible to electromagnetic interference and belongs to metal components, which can easily pose safety hazards. The infrared imaging method is greatly affected by the environment and cannot be used on structurally complex switchgear equipment.

Fluorescent fiber optic temperature measurement

Based on FJINNO's ten years of mature experience in research and development, fluorescent fiber optic temperature sensors are the most ideal equipment for temperature measurement in substations.

There are two types of fiber optic temperature sensor products: distributed and point type.

Among them, distributed temperature sensing devices are mainly used in the field of long-distance temperature measurement, such as high-voltage cable temperature measurement. Fluorescent fiber optic point temperature measurement equipment, as a substitute for traditional temperature sensors, has the characteristics of small size, long service life, intrinsic resistance to electromagnetic interference, and intrinsic safety, which can provide effective protection for temperature monitoring of substation equipment. Determine the equipment's ability and service life to provide scientific basis for safe operation of the equipment. Thereby improving economic efficiency and ensuring people's production and living.

Each switchgear has six contacts located on the A, B, and C phases on the upper and lower sides. To ensure the reliability of the node, all six contacts are monitored using fluorescent temperature measuring nodes. Fix the temperature measurement fiber optic probe on the static contact to complete the basic installation.

The temperature monitoring system for switchgear is designed using fluorescent fiber optic temperature measurement method. By monitoring the contact temperature of the switchgear, it provides strong data support for workers to understand the working status of switchgear equipment in real time. The feasibility and reliability of using fluorescent fiber optic temperature measurement method in temperature monitoring of substation equipment have been verified, and good results have been achieved. The design and operation of this system are of great significance for the health diagnosis and early warning of power equipment.

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