Why do power plants use fluorescent fiber optic sensor systems to measure temperature-INNO

Why do power plants use fiber optic temperature control systems to measure temperature

A large number of high-voltage cables and control cables are distributed in cable trenches, cable trays, and cable interlayers inside the power plant. Various cables, especially high-voltage cables, can experience temperature rise due to excessive load and aging of cable joints. Excessive temperature can easily cause fires, leading to interruptions in power plant operations. The fire caused by cables laid in a centralized manner will have a wider impact, longer repair time, and greater losses. Each power plant urgently needs an online temperature measurement technology that can automatically collect the surface temperature of cables in real time, monitor temperature changes in a timely and accurate manner, and issue warnings before the temperature becomes too high, so that managers have sufficient time to take corresponding measures and avoid fires.

To this end, 福州華光天瑞光電子技術有限公司, 株式会社. timely developed a linear fiber optic temperature sensing fire detection system, which can monitor the temperature of cables in real time and provide early warning and alarm. The system adopts an all fiber sensing passive temperature measurement method, eliminating the safety hazards of the monitoring system itself and greatly improving the availability of the monitoring system for power temperature monitoring. This fiber optic temperature measurement system is used by many power plants and power supply companies, greatly reducing the occurrence of fire accidents and truly achieving prevention before it occurs, in line with the safety concept of “safety first, prevention oriented” in the power industry.

Application of Fiber Optic Temperature Control System in the Power Industry

1. Temperature sensing devices are flame resistant and explosion-proof.

The temperature measurement part adopts an all fiber structure, which truly realizes passive temperature monitoring. It is not charged, does not generate heat, and will not pose any safety hazards due to the deployment of the sensing system.

2. 高い温度測定精度と高速応答.

温度測定ホストの温度分解能は、 0.1 ℃, 温度測定精度は±です。 1 ℃. The temperature detection time for a 4Km temperature measuring optical cable is about 4 秒.

3. リアルタイムのオンライン監視.

Monitor the temperature of all measuring points of the high-voltage cables in the power plant continuously for 7×24 時間, and regularly save the temperature measurement data to provide auxiliary data for the health monitoring of each high-voltage cable.

4. Distributed detection with no blind spots.

Real time monitoring can be carried out at every point within the range of temperature measuring optical cables, eliminating blind spots in monitoring and theoretically avoiding the possibility of missed fire alarms.

5. Flexible partition alarm control.

Through the monitoring software on the upper computer, different temperature measurement sections can be partitioned and managed according to customer needs. 一般的に, every 100M optical cable is set as one partition. Set different alarm parameters for each partition, such as temperature warning, temperature rise warning, 温度アラーム, 温度上昇アラームと, 本物の火災と偽の火災を正確に区別するため, eliminate false alarms and omissions.

6. Comprehensive self diagnostic function.

このシステムでは, 各測温用光ケーブルの温度を検出しながら, 各温度測定用光ケーブルの動作状況をリアルタイムに検出することもできます。, ケーブルの損傷や曲げによって生じる追加の損失など, 損傷や曲がりの位置を正確に特定します. Through self inspection and diagnostic functions, real-time detection of fiber optic cable damage is carried out for timely repair and maintenance.

7. Powerful software features.

Real time display of the location, 温度値, and temperature changes of each monitoring area on the human-machine interface. アラームが発生したとき, it can be linked with the alarm controller to activate the ventilation and cooling device or fire extinguishing device, and the monitoring software can also trigger the sound and light alarm on the software interface. If the upper computer is equipped with a SMS alarm module, the alarm information can be sent to the designated personnel’s mobile phones to ensure timely handling of fire hazards. On the upper computer, historical temperature data and alarm records can also be queried to generate safety operation reports.