The Application of Fiber Optic Temperature Measurement System in Power Supply System-INNO

Why does the power supply system need temperature measurement

The transmission and energy conversion of carrying electrical energy are ubiquitous throughout the entire system, proceso, y cada enlace. En un sistema de suministro de energía estable, many of the heating is not caused by severe short-circuit currents, sino por envejecimiento de equipos y líneas, Resistencia excesiva en los puntos de conexión del circuito., or prolonged operation in environments with poor heat dissipation. Estos peligros ocultos son difíciles de detectar mediante inspección manual., por lo que es necesario utilizar métodos de medición de temperatura para monitorear partes clave del sistema de suministro de energía.. Los componentes clave incluyen: contactos del disyuntor, barras de cobre y puntos de conexión de barras de cobre, primary cables and cable connections, núcleos de transformador, rectifier diodes, etc.. Traditional temperature measurement methods of thermal resistors and thermocouples, due to their conductor materials, can cause significant insulation hazards to the power supply system. The infrared temperature measurement method has a higher cost and is easily affected by falling dust. The wireless transmission temperature sensor is powered by a packaged battery, and its service life is only a few years. From this, it can be seen that various existing temperature measurement methods have significant limitations.

The advantages of using fiber optic sensors for temperature measurement in power supply systems

Actualmente, fiber optic and optoelectronic technologies are developing rapidly, and fiber optic sensor temperature measurement technology is very suitable for temperature measurement applications in power supply systems. It has advantages such as high temperature resistance, fuerte capacidad antiinterferencia, and accurate measurement, providing users with direct dynamic measurement. It has the advantages of direct, en tiempo real, and accurate measurement, and is very suitable for direct temperature measurement in high voltage and strong magnetic field environments, while ensuring the insulation performance of high voltage equipment.

En la industria energética, the safety of power equipment has always been of paramount importance. Due to temperature anomalies, power equipment failures occur frequently. Fiber optic temperature sensors are increasingly widely used in the power industry due to their high reliability, larga vida útil, seguridad intrínseca, and resistance to high voltage and strong magnetic fields. The fluorescent material of the probe is one of the important factors that determine the performance of fiber optic temperature sensors, therefore, fluorescent materials suitable for use in fiber optic temperature sensors are receiving increasing attention. The power generation, transmisión, transformation, distribution and other equipment in the power grid are mostly located in strong electromagnetic fields. The safe operation of key basic electrical equipment is a necessary guarantee for enterprise production and the basic guarantee for the normal operation of the entire national economy. The external thermal faults of electrical equipment are mainly caused by poor crimping of the joints. Under the action of high current, the temperature of the joints increases, and the oxidation of the contact points causes an increase in contact resistance, creating a vicious cycle of hidden dangers. This type of fault accounts for more than 90% of all thermal faults.

The power supply system of the fluorescent fiber optic temperature measurement device installs multiple fluorescent fiber optic probe temperature measurement points in key parts of the power supply system, transmits optical signals through conductive fibers, and then enters the fiber optic temperature measurement host to analyze the corresponding temperature value. The background monitoring upper computer reads the temperature data through dedicated fiber optic temperature measurement analysis software, displays and analyzes the real-time temperature values of various key parts of the power supply system, and forms a historical temperature curve through the database. Through the historical temperature data of the power supply system, big data analysis is conducted on the equipment and lines to diagnose and evaluate the operation status of the power supply system.

Online monitoring and analysis of temperature for key components of power supply equipment in the power supply system. For special high-temperature solid components of power supply equipment, precise temperature measurement is achieved through pre embedded installation, and the temperature sensor has good anti-interference effect through optical signal transmission. Al mismo tiempo, the temperature sensor has high accuracy, temperature measurement range, fiabilidad, y estabilidad. The fluorescence fiber optic temperature measurement method has a good signal transmission topology structure. After each fiber optic temperature measurement circuit is collected through a fiber optic merging unit, the temperature data is transmitted to the fluorescence fiber optic temperature measurement host through a multi-core optical cable. After the temperature data is processed by the temperature measurement host, it is uploaded to the backend upper computer through the TCP Modbus protocol. The temperature data is displayed and analyzed through the fiber optic temperature measurement analysis software to achieve real-time alarm function. Al mismo tiempo, historical data is statistically analyzed to form a historical curve, and a large amount of historical data is used to evaluate whether the load operation status of the power supply equipment is normal.