Què és millor, wireless temperature measurement or distributed fiber optic temperature sensor for substations-INNO

Una subestació és una instal·lació elèctrica del sistema elèctric que converteix la tensió, rep i distribueix energia elèctrica, Controla el flux d'electricitat, i ajusta la tensió. Com a base de conversió d'energia molt important, si es produeix un incendi o un altre accident elèctric en una subestació, inevitablement provocarà talls d'electricitat a gran escala, causant impactes i pèrdues importants a la producció de les empreses i a la vida de les persones. Per això, Garantir la seguretat i la fiabilitat de les subestacions i evitar incendis són crucials. Entre ells, El sobreescalfament de l'equip és un perill ocult important que pot provocar incendis a la subestació. Sobreescalfament als contactes dinàmics i estàtics i altres connexions de l'aparell d'alta tensió a les subestacions, juntes de cable, connexions per cable, i la descàrrega parcial dels cables d'alta tensió són els principals perills ocults dels accidents a gran escala. A més, Aquests llocs solen tenir tensions de diversos milers o fins i tot desenes de milers de volts, que suposen grans perills per a la seguretat dels operadors per entrar i investigar.

Characteristics and Disadvantages of Wireless Temperature Measurement System in Substation

Wireless temperature sensor, wireless centralized receiver, substation monitoring, centralized control station, remote monitoring center, the wireless temperature sensor is connected to the wireless centralized receiver through wireless communication; The wireless centralized receiver is connected to the substation monitoring through wired communication; Substation monitoring and centralized control station connection; Connection between remote monitoring center and centralized control station; The substation monitoring configuration is equipped with a GSM network that can trigger temperature anomaly alarm information to be sent to the relevant staff’s mobile phones; The remote monitoring center, centralized control station, and substation monitoring are each equipped with temperature monitoring display devices, which monitor the temperature of the substation equipment in real time. The substation monitoring has a preset temperature threshold, which can compare the received temperature data with the preset threshold and send abnormal alarm information to the relevant staff’s mobile phones to passively set a temperature threshold. It cannot set multi-level alarms according to the specific environment. If there are significant differences in the basic temperature of multiple points in the substation, the system is prone to misjudgment, and even a large fire may occur when the alarm is triggered. Unable to accurately locate the location of the accident point, can only determine the fire alarm area, and cannot reflect the real-time temperature situation.

Advantages of Distributed Fiber Optic Temperature Measurement System in Substation

Due to its ability to achieve distributed continuous monitoring of temperature along the fiber optic cable, and its advantages such as small size, pes lleuger, good electrical insulation, chemical corrosion resistance, resistència a altes temperatures, alta sensibilitat, fast response, explosion-proof, flame-retardant, baix cost, and resistance to electromagnetic interference, Fibra òptica distribuïda temperature sensors have been widely used in pipeline leak detection, dam infiltration, power system monitoring, fire warning, and medical treatment.

FJINNO provides an optical fiber temperature measurement system for substation temperature monitoring. By using distributed optical fiber temperature testing based on Raman scattering temperature measurement technology, temperature anomalies can be accurately and timely located on one optical fiber; Al mateix temps, the system is equipped with multi-level temperature alarm values and temperature rise rate alarms, displaying temperature distribution curves in real time, and providing early warning before a fire occurs. This solves the problem that existing temperature measurement systems can only passively set a temperature threshold, which is prone to misjudgment and cannot accurately locate the location of the accident point. Actualment, there are many studies on distributed fiber optic temperature measurement technology based on Raman scattering at home and abroad. The technical basis for achieving distributed measurement of temperature along the fiber optic cable is the Raman scattering and optical time domain reflection technology generated when light propagates in the fiber optic cable. When light undergoes Raman scattering in the fiber optic cable, its scattered light intensity is related to temperature, so intensity modulation technology can be used to measure the temperature along the fiber optic cable; By using optical time domain reflection technology, the demodulation of the position information of the measured temperature point can be achieved, thus completing the distributed measurement of temperature along the fiber optic cable.