The best manufacturer of fiber optic sensors for measuring the temperature of bus ducts-INNO

Com o desenvolvimento da ciência e tecnologia e da economia de mercado, o controle inteligente está se tornando cada vez mais popular. Os requisitos para capacidade elétrica, qualidade da fonte de alimentação, e garantir capacidade na vida residencial, produção empresarial, lugares públicos, etc.. estão se tornando cada vez mais altos. A corrente nominal dos equipamentos de subestação e equipamentos de controle também está aumentando constantemente; A rede inteligente é uma tendência voltada para o futuro, e a inteligência dos equipamentos de energia é a base da rede inteligente. Equipamento de subestação, equipamento de controle, e equipamentos elétricos são geralmente conectados através do barramento principal. A inteligência e padronização do monitoramento de temperatura no sistema de alimentação de barramento são a base para o status de transmissão em tempo real, condições de temperatura, e até mesmo detecção de patrulha de energia. Na aplicação prática de entroncamento de barramento, due to long-term operation in the air and the influence of ambient temperature and humidity, expansão e contração térmica, surface scaling, oxidation or corrosion may occur, leading to loose contacts and poor contact. Especially in some large buildings (such as large factories, super high-rise buildings, etc.), where the installation position of busbar trunking cannot be manually monitored, users often neglect the safety management of busbar trunking. Once the temperature of the busbar joints during operation is abnormally overheated, it may lead to fire or major safety and quality accidents, bringing huge and irreparable personal injury and economic and property losses to enterprises.
The bus duct is in a fully enclosed state during operation and is generally in a long-term live state, making daily maintenance and inspection very inconvenient. Portanto, é necessário monitorar a temperatura das juntas do barramento dentro do duto para melhorar a confiabilidade de sua operação.

Durante a operação de equipamentos de energia (como quadro de distribuição de energia), muitas vezes é necessário confirmar o status operacional do equipamento medindo a temperatura de várias peças e componentes dentro do equipamento de energia. A medição da temperatura de contato é um método comumente usado, mas no método de medição de temperatura de contato, é difícil instalar o dispositivo de medição de temperatura no barramento para garantir a conexão confiável entre o sensor de temperatura e o barramento, e para garantir a medição confiável da temperatura. Por exemplo, é fixado com adesivo específico para aviação, mas a eficiência da montagem é relativamente baixa, and the contact stability and reliability are poor.

The busbar refers to the connecting conductors between the main switch in the distribution cabinet and each branch circuit in the power supply system. The busbar may experience temperature rise during operation due to various reasons, but the temperature of the busbar needs to be controlled within a certain range to ensure the normal operation of the power supply system and prevent accidents. Portanto, temperature monitoring of the busbar is necessary at all times.
Com o contínuo desenvolvimento da tecnologia, various wireless bus temperature measurement devices have been used in the daily maintenance of busbars, which are basically powered by batteries, energia solar, external power supply, self induction power supply, etc.. The device structure is complex.

With the emergence of high-rise buildings and large factories, the electricity consumption in various industries has grown rapidly, and traditional cables can no longer meet the requirements in the transmission of large currents. As a new type of distribution conductor, plug-in bus duct has emerged. Compared with traditional cables, it can fully demonstrate its advantages in high current transmission. No entanto, the busbar trunking is exposed to high current and high voltage working environments for a long time. Due to aging, oxidação, loosening and other reasons, the contact resistance of the busbar contact points and each section of the connection will increase, leading to heating of the busbar, causing safety accidents such as leakage and melting, and even causing fires. Portanto, temperature monitoring of the busbar trunking is particularly important.

Atualmente, there are several main solutions for temperature monitoring of bus ducts:

1. Tecnologia de medição de temperatura infravermelha:

The measurement range is large and the accuracy is high, but with cable communication, cables need to be laid and temperature measurement space is required, making it impossible to achieve integrated integration of busbar equipment and online temperature detection. If there is a fault in the line, it will cause temperature measurement failure on a large area of the line.

2. Wireless temperature measurement technology:

Using wireless communication technology for signal transmission, due to distance limitations, it is necessary to set up adapter nodes (repeaters) at a certain distance to amplify the signal; Wireless signals are greatly affected by obstacles and are prone to attenuation; Quando medição de temperatura sem fio is used, the service life of the power supply battery needs to be considered, and a time-based circuit (ou seja. supplying power to the system at intervals) is adopted. Although this method extends the service life of the battery, it cannot achieve the function of real-time data collection, o que representa um risco à segurança.

3. Medição distribuída de temperatura de fibra óptica

O fibra óptica distribuída temperature measurement system is applied to the busbars and busways of each circuit for real-time temperature monitoring, thereby achieving safety monitoring of the operation of the busbar equipment.

Sistema distribuído de medição de temperatura por fibra óptica: It adopts optoelectronic technology, tecnologia de comunicação, tecnologia de microprocessador, tecnologia de detecção digital de temperatura, and designed low temperature, campo elétrico forte, e tecnologia de operação em ambiente úmido. Pode monitorar a temperatura em diferentes ambientes separadamente, detectar riscos de acidentes precocemente, and effectively reduce losses. Ao mesmo tempo, it can also provide a large amount of online monitoring data to provide operators with a comprehensive understanding of the outer temperature of the busbar, thereby indirectly inferring the current and load situation in the busbar, and providing power allocation basis for departments.

The significance of sistema distribuído de medição de temperatura de fibra óptica:

1. Safely increasing the current carrying capacity of the circuit;

2. Can achieve periodic state monitoring;

3. Drive external alarms or other emergency systems;

4. Identify hotspots (especially bus joints with potential accident hazards) and other environmental anomalies.

The distributed fiber optic temperature measurement system is a highly intelligent and automated monitoring technology that does not require manual inspection of the monitored area. The monitoring room screen can display temperature information of various points in the entire monitoring area; When there is an overheating point, it can sound or light an alarm, and even send it to relevant personnel via mobile phone SMS. Can accurately predict hot spots before accidents occur, with high positioning accuracy, and display the evolution of hot spot temperature. Ao mesmo tempo, the temperature sensor in the distributed fiber optic temperature measurement system has the characteristics of explosion-proof, forte resistência à interferência eletromagnética, bom isolamento elétrico, proteção contra raios, alta precisão, peso leve, pequeno volume, resistência à corrosão, resistência a altas temperaturas, and no static electricity. It can simultaneously measure the temperature distribution information on the entire fiber optic.