Fiber optic temperature measurement method is good for cable joint temperature monitoring-INNO

Why do power cable joint contacts heat up

Sa pag-unlad ng ekonomiya at lipunan, the electricity consumption of economic production and people’s lives is rapidly increasing, which to some extent increases the transmission burden of the power grid. Due to the inherent resistance of transmission lines, they convert a certain amount of electrical energy into thermal energy when transmitting current, causing the lines to generate heat. If the heat is too high, it is easy to damage the transmission lines, at sa malalang kaso, it may cause widespread power outages. In the actual transmission process, if the cable is long, electrical contacts need to be set at certain intervals. Electrical contacts are an important component of cable equipment. If there are problems such as poor contact, maluwag na compression joints, at napinsalang lakas ng pagkakabukod, it may cause an increase in cable temperature. Dahil sa kahirapan ng pag-iwas sa problema sa pag-init ng mga de-koryenteng contact sa mga kagamitan sa cable na may kasalukuyang teknolohiya, ang tumpak na pagsubaybay at maagang babala ng temperatura ng mga de-koryenteng contact sa cable equipment ay may malaking kahalagahan para sa pagpapanatili ng ligtas at matatag na operasyon ng cable equipment.

Ang mabilis na pag-unlad ng mga matalinong grids ay gumawa ng real-time na pag-access sa impormasyon sa katayuan ng pagpapatakbo ng mga kagamitan sa power system na isang mahalagang bahagi ng pagtiyak ng ligtas na operasyon ng sistema ng kuryente. Kumpara sa mga overhead transmission lines, Ang mga kable ng kuryente ay may mga pakinabang ng pag-okupa ng mas kaunting lupain at mas mataas na pagiging maaasahan, at ang kanilang proporsyon sa urban transmission at distribution network ay tumataas araw-araw. Gayunpaman, the large number of cable joints in cable lines is a weak link in the operation of power systems, among which temperature is the main factor restricting the safe operation of joints. Due to poor manufacturing and installation processes, excessive contact resistance, at iba pang mga kadahilanan, power cable joints are prone to abnormal temperature rise during high voltage and high current operation, pinabilis ang pag-iipon ng pagkakabukod. If abnormalities are not detected in a timely manner, it will cause fire accidents and affect the normal operation of the system. Samakatuwid, real-time monitoring of cable joint temperature, timely detection of temperature anomalies, and troubleshooting are of great significance for ensuring the safe operation of the power system.

What is the best method for temperature monitoring of cable joints

Traditional cable joint temperature monitoring is completed through regular manual inspections, but this method requires a large amount of work and is difficult to achieve timely and accurate monitoring. Some manufacturers use thermal resistors to monitor the temperature of cable joints in real time, but thermal resistors are prone to oxidation and should not be used in high temperature and humid environments. Fiber optic temperature measurement technology monitors cable temperature. Pagsukat ng temperatura ng fiber optic has the advantages of strong electromagnetic interference resistance and reliable signal transmission. Gayunpaman, laying fiber optic cables requires a large investment and is prone to breakage, making maintenance difficult in the later stage.

With the rapid development of sensing technology and computer technology, fluorescent fiber temperature online monitoring has gradually become an effective means of cable temperature monitoring. Fluorescent fiber optic temperature sensors can achieve multi-point contact temperature measurement, with advantages such as high measurement accuracy, low power consumption, at malakas na anti-interference na kakayahan. They are widely used in current temperature monitoring systems. The online temperature warning system for electrical contacts of pagsukat ng temperatura ng fluorescent fiber optic cable equipment includes a monitor module, an internal communication conversion module, and a warning module. By implementing a specific temperature warning process, based on accurate warning of the electrical contact temperature of cable equipment, over temperature data is alerted, achieving effective warning and maintaining the safety of cable equipment.