Sensores de temperatura de fibra óptica INNO ,sistemas de monitoramento de temperatura.
O que é um autotransformador de trânsito ferroviário
A fonte de alimentação AT (fonte de alimentação do autotransformador) método tornou-se a direção principal da construção ferroviária de alta velocidade e serviço pesado. O método de fonte de alimentação AT adiciona linhas alimentadoras positivas e autotransformadores paralelos na rede de tração, duplicando a tensão da fonte de alimentação do sistema. Sob a mesma carga de tração, a corrente da rede de contatos e das linhas de alimentação positivas pode ser reduzida pela metade. Ao mesmo tempo, a impedância da rede de tração no método de alimentação AT é de cerca de 1/4 disso na fonte de alimentação BT (fonte de alimentação do transformador de sucção) método, que melhora a capacidade de transmissão de energia da rede de tração e reduz as perdas de tensão e energia da rede de tração. Amplia efetivamente a distância de fornecimento de energia da subestação de tração, reduces the magnetic field generated by the traction current in the track, and weakens the interference caused by the magnetic field on adjacent communication lines.
Why does an autotransformer need to measure temperature
In power transmission and transformation systems, power equipment such as current carrying busbars and busbars may experience excessive temperature rise when the load current is too high or the surface is oxidized. Prolonged inactivity can degrade the performance of adjacent live parts, leading to breakdown, fault and power outage. According to data analysis provided by the production safety supervision department, sobre 90% of major accidents in power transmission and transformation stations across the country are caused by overheating, causing huge economic losses to production and operation, and also threatening the safety of life and property. By monitoring the operating conditions of bus contacts, juntas de cabos de alta tensão, and high-voltage switch contacts, it is possible to effectively prevent the occurrence of high-voltage transmission and substation faults, providing effective guarantees for achieving safe production. Portanto, taking effective measures to monitor the temperature changes of joints in transmission and transformation systems in high-voltage environments is a major issue that urgently needs to be addressed.
As an important component in the power system of rail transit, the safe and reliable operation of autotransformers is closely related to the safety of the power grid and transportation equipment. The fire accident caused by internal faults in transformers is a major hidden danger, so it is particularly important to detect and monitor the temperature of transformers.
As desvantagens dos métodos tradicionais de medição de temperatura
Many busbars are at high potentials (6KV, 10KV, 35KV, 110KV, 220KV, and even higher). Atualmente, there are many equipment specifically used for measuring high voltage busbars, high voltage switches, and electrical contact heating in China, but there are few measurements of the temperature of busbars in narrow fully enclosed spaces.
Wax stick temperature measurement
One commonly used method for temperature monitoring is to apply a layer of luminescent material with a color that changes with temperature on the high-voltage electrical contact surface, and roughly determine the temperature range by observing its color change. This method has low accuracy and poor reliability, and cannot be quantitatively measured. It is also impossible to observe in a fully enclosed environment;
Infrared thermal imager temperature measurement
Another method is to use infrared thermal imagers with radiation characteristics, which have high accuracy. No entanto, due to the need for optical components, it is not very convenient to use in specific situations. Even if it is reluctantly used, it poses challenges for installation, depuração, manutenção, and equipment power supply, making it difficult to implement and expensive, making it difficult to promote and apply. Mais importante, both of the above methods require manual inspection and cannot obtain real-time temperature data. The obtained data is always lagging and cannot function as a real-time temperature alarm.
Medição de temperatura sem fio
Atualmente, some Wireless temperature measurement systems are being put into use, and the stability of the temperature measurement terminals is not sufficient during operation. Além disso, most of these products are powered by built-in batteries, and the lifespan of the built-in batteries and the constraints on the appearance and size of the batteries have a greater or lesser impact on the products. Ao mesmo tempo, in environments that are difficult for personnel to reach, maintenance or battery replacement will become impossible.
Fluorescent fiber optic temperature measurement using autotransformer
Basic functions of transformer medição de temperatura de fibra óptica hospedar
▲ Data export
Gravação de eventos
▲ Multi level alarm settings
▲ Temperature trend analysis
▲ Historical data callback
▲ Real time data recording
▲ Output: 4-20MA
Multi channel temperature measurement:
Saída: RS485
Standard MODBUS protocol;
FJINNO provides transformer fluorescent fiber optic temperature sensors at a reasonable price. Bem-vindo a entrar em contato conosco!
Sensor de temperatura de fibra óptica, Sistema de monitoramento inteligente, Fabricante distribuído de fibra óptica na China
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