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

Avec le développement de la science et de la technologie et de l'économie de marché, le contrôle intelligent devient de plus en plus populaire. Les exigences en matière de capacité électrique, qualité de l'alimentation, et garantir la capacité dans la vie résidentielle, production d'entreprise, lieux publics, etc. sont de plus en plus élevés. Le courant nominal des équipements de sous-station et des équipements de contrôle augmente également constamment; Le réseau intelligent est une tendance d’avenir, et l'intelligence des équipements électriques est le fondement du réseau intelligent. Équipement de sous-station, équipement de contrôle, et les équipements électriques sont généralement connectés via le jeu de barres principal. L'intelligence et la standardisation de la surveillance de la température dans le système d'alimentation électrique du jeu de barres constituent la base de l'état de transmission en temps réel, conditions de température, et même la détection de puissance en patrouille. In the practical application of busbar trunking, en raison du fonctionnement à long terme dans l'air et de l'influence de la température et de l'humidité ambiantes, dilatation et contraction thermique, mise à l'échelle des surfaces, une oxydation ou une corrosion peut se produire, leading to loose contacts and poor contact. Especially in some large buildings (comme les grandes usines, immeubles de très grande hauteur, 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.
Le conduit de bus est dans un état entièrement fermé pendant le fonctionnement et est généralement dans un état sous tension à long terme, rendant l'entretien et l'inspection quotidiens très gênants. Donc, it is necessary to monitor the temperature of the bus joints inside the bus duct to improve the reliability of its operation.

During the operation of power equipment (such as power switchgear), it is often necessary to confirm the operating status of the equipment by measuring the temperature of various parts and components inside the power equipment. Contact temperature measurement is a commonly used method, but in the contact temperature measurement method, it is difficult to install the temperature measuring device on the busbar to ensure the reliable connection between the temperature sensor and the busbar, and to ensure the reliable measurement of temperature. Par exemple, it is fixed with aviation specific adhesive, but the assembly efficiency is relatively low, 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. Donc, temperature monitoring of the busbar is necessary at all times.
Avec le développement continu de la technologie, various wireless bus temperature measurement devices have been used in the daily maintenance of busbars, which are basically powered by batteries, énergie solaire, 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. Toutefois, the busbar trunking is exposed to high current and high voltage working environments for a long time. Due to aging, oxydation, 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. Donc, temperature monitoring of the busbar trunking is particularly important.

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

1. Technologie de mesure de la température infrarouge:

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; Quand Mesure de température sans fil is used, the service life of the power supply battery needs to be considered, and a time-based circuit (c'est à dire. 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, qui présente un risque pour la sécurité.

3. Mesure de température par fibre optique distribuée

Le Fibre optique distribuée 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.

Système de mesure de température à fibre optique distribuée: It adopts optoelectronic technology, Technologie de la communication, Technologie des microprocesseurs, Technologie de détection numérique de la température, and designed low temperature, Champ électrique puissant, et technologie de fonctionnement en milieu humide. Il peut surveiller la température dans différents environnements séparément, Détecter rapidement les risques d’accident, and effectively reduce losses. En même temps, 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 Système distribué de mesure de la température par fibre optique:

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

2. Peut réaliser une surveillance périodique de l'état;

3. Drive external alarms or other emergency systems;

4. Identify hotspots (en particulier les joints de bus présentant des risques d'accident potentiels) et autres anomalies environnementales.

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; Quand il y a un point de surchauffe, il peut déclencher ou allumer une alarme, and even send it to relevant personnel via mobile phone SMS. Can accurately predict hot spots before accidents occur, with high positioning accuracy, et afficher l'évolution de la température du point chaud. En même temps, the temperature sensor in the distributed fiber optic temperature measurement system has the characteristics of explosion-proof, forte résistance aux interférences électromagnétiques, bonne isolation électrique, Protection contre la foudre, haute précision, Poids léger, petit volume, résistance à la corrosion, résistance aux hautes températures, and no static electricity. It can simultaneously measure the temperature distribution information on the entire fiber optic.