Air Switchgear Temperature Monitoring System-INNO

Air switchgear, as a key equipment in the power system, its operating status is directly related to the stability and reliability of power supply. Abnormal temperatures at internal contacts, busbar connections and other parts are often important factors causing faults. The fluorescent fiber optic temperature monitoring system, with its unique advantages, has become a powerful assistant in ensuring the safe operation of air switchgear.

Temperature Monitoring System for Switchgear

1. Working Principle of Fluorescent Fiber Optic Temperature Monitoring System

A fluorescent substance is plated on the end of the optical fiber. When excited by light of a specific wavelength, the fluorescent substance radiates fluorescent energy. Since the excited radiation energy decays exponentially, and the decay time constant changes with temperature, the temperature at the measuring point can be obtained by accurately measuring the decay time. This temperature measurement method based on the fluorescence effect provides a reliable technical path for temperature monitoring inside air switchgear.

2. Characteristics of Fluorescent Fiber Optic Temperature Monitoring System

Characteristics	Details
Strong anti-electromagnetic interference ability	Fluorescent fiber optic sensors use dielectric resistance materials, which are completely free from electromagnetic interference (EMI) and radio frequency interference (RFI). They can work stably in the strong electromagnetic environment inside the air switchgear, ensuring accurate collection and transmission of temperature data.
Excellent insulation performance	The sensor itself is an all-optical measurement device with only optical signals and no electrical signals, being a truly passive probe. In the 30cm ground insulation test, it can withstand 140kV power frequency voltage, far exceeding the national standard, which can effectively avoid safety hazards caused by electrical connections and is suitable for the high-voltage environment of air switchgear.
High-precision temperature measurement	The temperature measurement accuracy can reach ±1℃, and the resolution is 0.1℃, which can敏锐ly capture subtle temperature changes inside the air switchgear and timely detect potential fault hazards.
Fast response	The temperature measurement cycle is less than 1 second, and the standard temperature measurement response time is 0.5 seconds, which can fully ensure the timeliness of alarms. Once the temperature is abnormal, it can respond quickly, striving for valuable time for fault handling.
Compact size	The temperature-sensing probe is small in size (3mm), which is convenient for accurate positioning and installation in the narrow space inside the air switchgear, and has little impact on the original structure and performance of the equipment.
Long service life and stability	The temperature-sensing material uses rare earth materials, with long-term stable performance. It has been successfully applied in equipment monitoring for more than 30 years. The service life of the light source is lifelong. The system has high stability, and each temperature measurement unit is independent of each other, so the failure of a single link will not cause the entire system to fail.

3. Frequently Asked Questions (FAQ) about Fluorescent Fiber Optic Temperature Monitoring System

(1) Installation Aspect

Q: Is the installation of the fluorescent fiber optic temperature monitoring system complicated?
A: The system installation is relatively convenient. The temperature-sensing probe is small in size and can be installed at key temperature measurement points of the air switchgear, such as moving and static contacts and busbar joints, by means of tape binding, clip fixing, thread fixing, gluing, etc. The analyzer and other equipment also have various installation forms to choose from, such as industrial standard DIN rail installation, ordinary desktop installation, etc. At the same time, the optical fiber wiring is relatively flexible and can be reasonably arranged according to the on-site environment.
Q: Will the installation process affect the normal operation of the air switchgear?
A: As long as the correct operating procedures are followed during installation, it will not affect the normal operation of the air switchgear. Since the fluorescent fiber optic sensor is a passive probe, there is no need for large-scale electrical transformation of the switchgear during installation, and some installation operations can be carried out in the charged state. However, it is necessary to take protective measures to ensure the safety of installers.

(2) Usage and Maintenance Aspect

Q: Does the system need regular calibration during use?
A: The sensor of the fluorescent fiber optic temperature monitoring system is not restricted by channel interchangeability, and can achieve accurate temperature measurement without frequent calibration after installation. Its internal optical sensing technology avoids the influence of drift which traditional electronic components are prone to, and has good long-term stability in use, which can greatly reduce the maintenance frequency.
Q: If the optical fiber sensor is damaged, is it troublesome to replace?
A: Replacing a damaged optical fiber sensor is relatively cumbersome. Because the optical fiber sensor of each channel is matched one-to-one with the channel of the temperature demodulator, and each channel cannot be interchanged, it is necessary for the manufacturer to separately produce an optical fiber sensor that has been set and calibrated for installation and use. Therefore, in daily use, attention should be paid to the protection of the optical fiber sensor to reduce the risk of damage.
Q: What is the approximate service life of the system?
A: The overall service life of the system is relatively long. The rare earth material used as the temperature-sensing material has stable performance. The service life of the light source is lifelong. Under normal circumstances, the system can operate stably for more than 10 years, reducing the cost and inconvenience caused by frequent replacement of equipment.

(3) Performance Aspect

Q: Will the measurement accuracy of the system be affected in high-temperature environments?
A: The fluorescent fiber optic temperature monitoring system is designed to be suitable for a wide temperature range. Within the temperature measurement range of -30℃~150℃, it can maintain high-precision measurement of ±1℃. Even in the high-temperature environment that may occur inside the air switchgear, it can reliably provide accurate temperature data.
Q: Can the system monitor the temperature of multiple points at the same time?
A: Yes. The system supports multi-channel monitoring. According to the monitoring needs of the air switchgear, multiple temperature-sensing probes can be flexibly configured to monitor the temperature of multiple key parts in real time, so as to fully grasp the temperature status of the equipment.

4. Top 10 Global Manufacturers of Fluorescent Fiber Optic Temperature Monitoring Systems

Ranking	Manufacturer Name	Advantages
1	Fuzhou Innovation Electronic Scie&Tech Co., Ltd.	It has a strong R&D team. Its products adopt fluorescent fiber optic temperature measurement technology, with characteristics of high precision, strong anti-interference ability, high voltage resistance and corrosion resistance, and are suitable for various complex industrial environments. The products are highly intelligent, with multiple data transmission methods and fast response. They perform excellently in real-time temperature monitoring, early warning and data transmission of power switchgear, and have been widely used in the power system with good results.
2	Huaguang Tianrui	Focusing on the manufacture of fiber optic thermometers, its products have high precision, strong stability and good sensitivity, and are suitable for various industries such as industrial power, metallurgy and medical treatment. Its fiber optic temperature measurement system adopts fluorescent fiber optic temperature measurement sensing technology, with excellent electrical insulation, and performs prominently in application scenarios such as transformer winding hot spot temperature measurement.
3	Luna Innovations	It pays attention to close cooperation with customers, can develop customized fiber optic temperature sensors according to customer needs, and its products have high precision and high sensitivity, meeting the diverse needs of different customers.
4	Opsens Solutions	It provides high-performance fiber optic temperature sensors, which are especially suitable for high-voltage and strong electromagnetic interference environments such as nuclear magnetic resonance imaging and radio frequency energy environments. The products have excellent performance and can work stably in extreme environments.
5	Omega Engineering, Inc.	Its FOS series fiber optic sensors have high precision and fast response time, can be widely used in various scenarios, with reliable product quality and a wide range of applications.
6	Yokogawa DTSX3000	The distributed temperature sensor has high spatial resolution and long-distance measurement capability, which has obvious advantages in applications such as factory and infrastructure maintenance, and can realize accurate temperature monitoring over a large area and long distance.
7	FISO Fiber Optic Temperature Sensors	The measurement results provided are accurate, stable and repeatable, suitable for various application fields, with stable product performance, which can provide users with reliable temperature monitoring data.
8	Althen Sensors and Controls	It provides various types of fiber optic temperature sensors, suitable for special environments such as high temperature, electromagnetic interference or explosion hazards. The products have strong adaptability and can meet the temperature measurement needs in different harsh environments.
9	Qualitrol	The fiber optic temperature sensors produced can be used in transformer winding temperature monitoring as well as various application scenarios such as laboratories, industry and medical treatment, with a wide range of product applications and guaranteed quality.
10	Advanced Energy	The fiber optic sensors provided are highly reliable and accurate, suitable for harsh environments such as semiconductor manufacturing, power electronics and aerospace, and perform excellently in high-demand industrial scenarios.