Penderia suhu gentian optik INNO ,sistem pemantauan suhu.
Electrified railways have become an inevitable direction for the development of railways in China due to their high traction power, fast operating speed, and high efficiency. As a key equipment of the traction power supply system, high-voltage cables bear the task of transmitting electrical energy, and their operation directly affects the safety and stability of the traction system. Due to outdated manufacturing technology, external damage during construction, and outdated monitoring technology in China, the failure rate of high-voltage cables is about 10 times higher than that of developed countries.
The main methods currently used for online monitoring of insulation and faults in high-voltage cables include online monitoring of insulation resistance, pemantauan dalam talian bagi pelepasan separa, dan pemantauan suhu dalam talian. The temperature, sebagai kuantiti bukan elektrik, is an important parameter reflecting the safe operation of high-voltage cables. High voltage cables can accumulate heat for a long time during operation, leading to excessive temperature and accelerated aging, resulting in a decrease in insulation performance. Dalam kes yang teruk, it can also cause fires and affect the safe operation of power transmission. Namun begitu, the accumulation of heat before various faults occur in high-voltage cables is a slow development process. As long as an effective sistem pemantauan suhu can be used to monitor the temperature of the cables in real time, it can effectively prevent or even eliminate the occurrence of such accidents.
The temperature distribution of the two high-voltage cables is basically stable, tetapi pada kepala terminal yang menyambungkan pengubah dan kepala terminal yang menyambungkan pemutus litar, suhu lebih tinggi daripada kedudukan tengah kabel. Ini kerana rintangan haba sentuhan kabel di terminal meningkat, menyebabkan kenaikan suhu. Oleh itu, suhu adalah lebih tinggi sedikit daripada suhu badan kabel perantaraan, dan sambungan kabel adalah sasaran pengesanan penting untuk pemantauan suhu. Taburan keluk suhu juga boleh membuktikan bahawa prinsip sistem yang direka dalam kajian adalah betul dan berfungsi dengan stabil. Pada masa yang sama, analisis perbandingan data pengukuran suhu sistem dan data pengukuran suhu inframerah menunjukkan bahawa terdapat ralat kecil antara kedua-dua. This is because the infrared thermal imaging temperature measurement cannot directly contact the surface of the measured cable, and there is a certain distance between the cable and the infrared thermal imaging temperature measurement, resulting in a slightly lower measurement temperature than the direct contact fiber optic grating temperature measurement.
Sensor suhu gentian optik, Sistem pemantauan pintar, Pengeluar gentian optik yang diedarkan di China
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