Fiber Optic Temperature Measurement System for Temperature Monitoring on High Voltage Switchgear Ring Cabinets

Fluorescent fiber optic temperature measurement system applied to power equipment monitoring system, anti-strong electromagnetic interference, high pressure resistance, fiber-optic end probe attached to the surface of the body under test, temperature measurement fiber immune to electromagnetic field interference, high-voltage insulation, flame-proof and explosion-proof; single-point temperature measurement, digital signal output; fiber-optic probe diameter is small, can be customized; easy to install; toggle switches, can be set directly to the communication address. In addition to a wide temperature measurement range and accurate, reliable temperature measurement performance, there are excellent anti-EMI/RFI (electromagnetic interference/RFI) characteristics, high-voltage insulation and anti-interference and other excellent performance. Real-time and accurate monitoring of hot spot temperature during dynamic load operation can be realized. Solve the problem of low security, poor measurement accuracy, temperature measurement failure and other issues in the electromagnetic environment using traditional electrical temperature measurement instruments.

Due to some temperature measurement site has a harsh environment, such as high temperature, high pressure, high electromagnetic interference, and even some temperature measurement site has a certain degree of corrosivity, radioactivity; or flammable and explosive, etc., is not suitable for electronic temperature measurement equipment in the field work. In order to solve the above problem of temperature measurement in harsh environments, many long-distance temperature measurement equipment is designed, such as: long-distance infrared temperature measurement equipment, long-distance wireless temperature measurement equipment. However, these electronic devices have some critical shortcomings, such as infrared temperature measurement equipment is susceptible to space light interference, can not be automatically measured in real time, can not enter the space of the narrow temperature measurement point, produce sparks and so on. The temperature measurement node of wireless temperature measurement equipment is susceptible to on-site electromagnetic interference, greatly affecting the accuracy of temperature measurement, or even unable to carry out temperature measurement, and at the same time does not have the ability to resist corrosion and radiation.

Fluorescent fiber optic sensors can be in a strong electromagnetic interference environment for accurate temperature measurement, fiber-optic end probe attached to the surface of the body under test, temperature measurement fiber immune to electromagnetic field interference, high-voltage insulation, flame-proof and explosion-proof; single-point temperature measurement, digital signal output; fiber-optic probe with a small diameter, can be customized; easy to install; toggle switches, can be set directly to the communication address. Real-time collection of temperature information of the measured object. The use of Huaguang Tianrui fluorescent fiber optic temperature measurement probe has a strong electromagnetic immunity and voltage resistance, insulation properties. Sensitive temperature sensing, long-term stable and reliable operation. Temperature measurement accuracy of up to ± Now in the power grid, high-voltage switchgear and ring network cabinet is a large number of practical applications, is an important part of the city power supply network and control contacts. The operation status of high-voltage switchgear/ring network cabinet is directly related to the reliability of urban power supply system. High-voltage switchgear/ring network cabinet space is relatively small, if the equipment is overloaded for a long time, the ambient temperature and electrical contact temperature is easy to high, not timely detection and treatment may lead to fire or explosion accident, in order to ensure the safe operation of the current many companies of the electric power maintenance personnel need to regular high-voltage switchgear/ring network cabinet manual inspection of the temperature detection, the workload is large, the accuracy is low.

The disadvantages of manual inspection of high-voltage switchgear ring network cabinet

Manual inspection, unable to locate

The hot spot inside the HV switchgear/ring network cabinet does not have the function of automatic localization, which makes it impossible to locate accurately in case of accidents.

Closed space, difficult to monitor

Most of high-voltage switchgear/ring-network cabinet adopts closed structure, the heat dissipation condition is poor, the temperature is easy to rise, resulting in equipment failure, and it is not easy to find the fire at the initial stage, and it is difficult to put out the fire after it develops rapidly.

Fluorescent fiber temperature measurement system in the high-voltage switchgear ring network cabinet solution

The fluorescent fiber optic temperature measurement system is used to monitor the abnormal temperature changes of contacts and contacts inside the high-voltage switchgear/ring-network cabinet or busbar in real time, 24 hours a day, 24 hours a day, to comprehensively grasp the instant temperature status of contacts or contacts in the high-voltage switchgear/ring-network cabinet, as well as to accurately locate the hot spot of the contacts or contacts. The fluorescent fiber optic temperature sensing probe is made of customized material that is applied to the contact surface for accurate temperature monitoring. According to the temperature change and the pre-set temperature value condition real-time alarm information (warning, alarm and over limit).

Fiber optic temperature measurement device is the fluorescent temperature probe monitoring parts of the temperature information is converted to optical signals, and transmitted to the fluorescent fiber temperature demodulation and alarm module, fiber optic sensor probe size is extremely small, can be installed directly on the measured point temperature measurement accuracy, rapid response; its pigtail selection of soft, sturdy, special fiber, it has a high transmission bandwidth, signal stability, anti-electromagnetic interference, resistance to deflection, impact resistance and high strength and connectivity It has the advantages of high temperature resistance, aging resistance, corrosion resistance, high insulation, non-adhesion and other characteristics, can be adapted to high-pressure, high-temperature, strong electromagnetic and other harsh environments.

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