Système de mesure de température à fibre optique fluorescente pour disjoncteurs d'appareillage de commutation, manufacturer-INNO

The high-voltage switchgear equipped with handcart vacuum circuit breakers and isolation handcarts must be equipped with a fluorescent hotspot fiber optic online monitoring system (with a minimum of 8 detection points per high-voltage cabinet) to monitor the circuit breaker contacts, jeux de barres, câbles, etc.. in real time.

With the development of the national economy, the capacity of the power grid increases, the voltage of the power grid rises, and the stability of the power grid operation and supply also face higher requirements. The operating status of the main electrical equipment directly affects whether the power system can operate safely and reliably
High voltage switchgear is used in power systems to control, protéger, and isolate electrical equipment. It integrates a large number of electrical components, including high-voltage circuit breakers, sectionneurs, and fuses, inside a grounded metal casing. La fonction principale de l'appareillage est d'ouvrir, close, contrôle, et protéger les équipements électriques pendant le processus de production d'électricité, transmission, distribution, et conversion d'énergie dans le système électrique;

À l'heure actuelle, with the widespread use of fully enclosed high-voltage switchgear in 10kV power grids, higher requirements have been put forward for its reliability. Cependant, abnormal heating of electrical joints inside the switchgear during long-term operation has become a common problem among many factors affecting the safe operation of the switchgear. In response to the current situation of temperature monitoring of high-voltage equipment, the online monitoring system for high-voltage electrical contact temperature has solved the problems encountered in conventional temperature monitoring methods and played a good warning role in avoiding high-voltage electrical equipment accidents.

Au cours des dernières années, multiple fires and large-scale power outages have occurred in the power system due to equipment overheating. Analysis shows that 40% of the annual power accidents in China are caused by overheating of high-voltage electrical equipment; In power supply systems that use high-voltage switchgear and power cables, sur 70% of cable operation failures are caused by increased contact resistance and overload at the connection points, resulting in excessively high joint temperatures. A 110kV substation has experienced a prolonged power outage due to the heating and ignition of the feeder cable joints and switch primary contacts, resulting in the burning of three 10kV fully enclosed high-voltage switches and causing significant economic losses. In order to ensure the reliability of power supply and the continuity of production, cable joint temperature measurement has become a standard configuration for high-voltage switchgear in large local chemical enterprises. Cependant, due to the reliability of technology and high installation costs, it has not been widely promoted. With the maturity of technology and the reduction of costs, it is believed that there will be a great market demand.

Caractéristiques de Fluorescent Fiber Optic Temperature Measurement System for Switchgear Circuit Breaker

1. Résistance aux hautes températures, résistance au vieillissement, résistance à la corrosion, haute isolation, non adhesion and other characteristics, can adapt to harsh use environments such as high voltage, haute température, et de forts champs électromagnétiques;

2. Real time monitoring of temperature changes in key areas of high-voltage switchgear/ring main unit, and issuing real-time alarm information (avertissement, alarme, et au-delà de la limite) based on temperature changes;

3. Not changing the original form of the contact busbar and cable head of the switchgear, and not reducing the performance of the cable head and the entire cabinet;

4. Can pass partial discharge test and withstand voltage test normally;

5. Fiber optic sensors have good flexibility, dureté physique élevée, ne sont pas facilement endommagés, et ont une longue durée de vie;

6. Les capteurs peuvent être personnalisés selon les besoins, y compris la longueur du capteur, type de sonde, et matériau de la gaine du capteur (céramique, verre, plastique, ou d'autres matériaux isolants)