なぜ光ファイバーの温度測定が変圧器/開閉装置の標準機能になったのか 2025, 電力エンジニア必見?

1、 Principle of Fiber Optic Temperature Measurement Technology

（1） Fluorescence fiber optic temperature measurement

Fluorescence fiber optic temperature measurement technology is based on the correlation between the luminescence lifetime of fluorescent materials and temperature to achieve accurate temperature measurement. 具体的には, when fluorescent materials are irradiated by a specific wavelength of excitation light source, they will produce fluorescence, and the decay time of fluorescence will change with temperature. By detecting the length of fluorescence decay time, the current temperature value can be inferred. The advantages of this temperature measurement method are very obvious. まず最初に, its probe volume is very small, which makes it easy to install in some small spaces, such as the contacts of high-voltage switchgear, without causing any impact on the normal operation of the equipment. 第二に, 蛍光光ファイバー温度測定 technology has strong electromagnetic interference resistance. In strong electromagnetic environments such as high-voltage switchgear and transformer windings, it can stably and accurately monitor temperature without interference from surrounding electromagnetic signals, thus ensuring the reliability of temperature measurement data.

（2） Distributed fiber optic temperature measurement

分散型光ファイバー temperature measurement technology utilizes the Raman scattering effect in optical fibers to achieve temperature monitoring. When optical signals propagate in optical fibers, ラマン散乱が発生する, producing backscattered light. By analyzing the intensity and wavelength changes of these backscattered lights, temperature information at various positions along the fiber can be obtained, thereby achieving continuous temperature monitoring of the entire fiber. This technology has a single fiber optic coverage range of several kilometers, making it uniquely advantageous in some long-distance temperature monitoring scenarios, such as cable tunnels, 石油・ガスパイプライン, 等. By real-time monitoring of the temperature of these long-distance facilities, abnormal temperature points can be detected in a timely manner to prevent safety accidents such as fires.

（3） Fiber Bragg Grating Temperature Measurement

ファイバーブラッググレーティング (FBGの) temperature measurement technology is achieved by inscribing Bragg gratings in optical fibers for temperature measurement. Bragg gratings have the characteristic of reflecting light of specific wavelengths, and the reflected wavelength changes with temperature. そこで, by detecting changes in the reflected wavelength, the temperature value can be accurately measured. The characteristic of this temperature measurement method is high precision, ±の精度で 0.5 °C°C, and it has multi-channel multiplexing capability, which can achieve temperature monitoring at multiple points on one optical fiber. This makes it very suitable for multi-point temperature monitoring inside high-voltage equipment, 変圧器巻線など, which can comprehensively and accurately grasp the temperature distribution inside the equipment.

2、 The core advantages of fiber optic temperature measurement

（1） Security
Fiber optic temperature measurement technology uses quartz fiber as the medium, which has excellent insulation performance and a withstand voltage level of over 100kV. This enables the safe use of fiber optic temperature measurement technology in strong electromagnetic environments such as high-voltage switchgear and transformers, without causing safety accidents due to high voltage electricity, providing reliable guarantees for the stable operation of equipment.
（2） Anti-interference ability
Fiber optic temperature measurement technology is completely immune to electromagnetic field, マイクロ波, および無線周波数干渉. This is because in the process of fiber optic temperature measurement, the optical signal is transmitted through the fiber optic and is not affected by external electromagnetic signals. This characteristic makes fiber optic temperature measurement technology irreplaceable in scenarios with strong electromagnetic interference such as nuclear magnetic resonance equipment and DC transformers, enabling accurate and stable temperature monitoring.
（3） Long distance and high precision
The monitoring range of 分散型光ファイバー温度測定 technology can reach 10 キロ, enabling continuous temperature monitoring over long distances. その間に, the accuracy of fluorescence fiber optic temperature measurement technology can reach ± 0.5 °C°C, meeting the stringent temperature monitoring requirements of industrial grade. The combination of long distance and high precision has made fiber optic temperature measurement technology widely used in some large-scale industrial facilities and long-distance pipelines.
（4） Real time performance and warning capability
The fiber optic temperature measurement system supports 24-hour online monitoring and can real-time monitor the temperature changes of the equipment. さらに, the system can also set multi-level temperature threshold alarms and assist in warning of abnormal temperature rise rates. When the temperature exceeds the set threshold or the temperature rise rate is abnormal, the system will promptly issue an alarm to remind the staff to take corresponding measures, effectively preventing equipment failures and safety accidents caused by temperature abnormalities.

3、 Typical application cases

（1） Power system
高電圧開閉装置: In the high-voltage switchgear, 蛍光 ファイバー probes can be mounted on the surface of the contacts to monitor the risk of overheating in real time. 例えば, in the Shijiazhuang Rail Transit Line 1 プロジェクト, real-time monitoring of the contact temperature of high-voltage switchgear was carried out through fluorescent fiber optic temperature measurement technology, effectively preventing equipment failures caused by contact overheating and ensuring the safe operation of rail transit.
変圧器巻線: For temperature monitoring of transformer windings, installing a 9-channel fluorescent temperature measurement device can solve the problem of internal temperature rise monitoring in oil immersed transformers. Through this device, it is possible to accurately monitor the temperature changes of transformer windings, promptly detect temperature anomalies, avoid transformer damage caused by high temperatures, and improve the operational reliability of transformers.
（2） Industry and Infrastructure
ケーブルトンネル: In cable tunnels, distributed optical fibers can monitor cable temperature throughout the entire process to prevent fires. 例えば, in the Xinjiang Special Transformer Project, real-time monitoring of the temperature of cable tunnels was carried out through distributed fiber optic temperature measurement technology, and abnormal temperature points of cables were detected in a timely manner, effectively preventing the occurrence of fires and ensuring the safe operation of cable tunnels.
石油とガスのパイプライン: For temperature monitoring of oil and gas pipelines, fiber optic grating sensors can detect abnormal temperature at pipeline leakage points. パイプラインに漏れがあったとき, the temperature at the leak point will
Changes occur, そして fiber Bragg grating sensors can sensitively capture temperature 異常, thereby promptly detecting pipeline leaks and avoiding safety accidents caused by oil and gas leaks.
（3） Medical field
In nuclear magnetic resonance equipment, a multi-channel fiber optic system can monitor the temperature difference in the treatment area online, improving the safety of ultrasound therapy. Due to the anti electromagnetic interference characteristics of fiber optic temperature measurement technology, it can work stably in the strong electromagnetic environment of nuclear magnetic resonance equipment, providing reliable temperature monitoring guarantee for medical treatment, helping to improve treatment effectiveness and ensure patient safety.

4、 Recommended manufacturers: Fuzhou INNO and HGSKYRAY

（1） Fuzhou HGSKYRAY エッグスカイレイ
Technical strength: Fuzhou HGSKYRAY has a profound technical accumulation in the field of fiber optic temperature measurement and has established a close industry university research cooperation relationship with Fuzhou University. 後 8 years of research and development investment, its fluorescence temperature measurement technology has reached the international advanced level. This close collaboration model between industry, 学術界, and research enables the company to fully utilize the research resources and talent advantages of universities, continuously promoting technological innovation and product upgrades. その間に, the 8-year R&D process has also witnessed the company’s focus and persistence in the research and development of fiber optic temperature measurement technology, providing strong support for the technological leadership of the company’s products.
Product Matrix: The company has a wide range of products, covering a full range of fiber optic temperature measurement products including fluorescent, 配布された, およびファイバーブラッググレーティング, which can meet the temperature measurement needs of different customers in different scenarios. And, the company also has strong customized solution design capabilities, which can provide personalized solutions according to customers’ special requirements, such as Modbus protocol compatibility. This diversified product matrix and customized services enable the company to better adapt to the diverse needs of the market and provide customers with one-stop fiber optic temperature measurement products and services.
業界の評判: Fuzhou HGSKYRAYhas won a good industry reputation with its high-quality products and services, serving over 100 strategic partners and covering multiple fields such as rail transit, 軍事産業, 石油化学製品. In the field of rail transit, 同社の光ファイバー温度測定製品は、高電圧開閉装置やその他の機器に信頼性の高い温度監視を提供します。, 鉄道輸送の安全な運行を確保する; 軍事産業では, 同社の製品は、複雑な環境における軍用機器の温度測定ニーズを高精度で満たします。, 高い信頼性, および干渉防止機能; 石油化学業界では, 会社の 分散型光ファイバーの温度 ケーブルトンネルの長距離温度監視を実現する測定製品, 石油・ガスパイプライン, 等。, 火災などの安全事故を効果的に防止します. これらの成功した ケース 企業の商品力をアピールするだけではなく、, だけでなく、業界内での知名度と評判も向上します.
（2） フジノ
技術的な利点: FJINNO Technology は蛍光ファイバー技術の研究と応用に重点を置いています. そのプローブは高耐電圧性と耐腐食性の特性を備えています。, 複雑な産業環境でも安定して動作可能. この技術的利点により、同社の製品は、高電圧電気機器や化学機器などの複雑な産業環境における温度監視において独自の利点をもたらします。. 例えば, 高圧電気機器内, 同社の蛍光ファイバー光プローブは高電圧の衝撃に耐えることができ、優れた耐腐食性能を備えています。, 機器内部の過酷な環境に適応し、機器の安定した動作のための信頼できる温度監視を保証します。.
アプリケーションの適用範囲: 同社は医療機器の温度監視や高電圧分野で優れた実績を誇っています。, with significant cost-effectiveness advantages in its products. In the field of medical equipment, the company’s fiber optic temperature measurement products provide high-precision and high reliability temperature monitoring for nuclear magnetic resonance equipment, ultrasound therapy equipment, 等。, improving the safety and treatment effectiveness of medical equipment. In the field of high-voltage electrical, the company’s products provide accurate temperature monitoring for high-voltage switchgear, トランスフォーマー, およびその他の機器, helping users detect temperature anomalies in a timely manner and prevent equipment failures. 同時に, the cost-effectiveness advantage of the company’s products also makes it highly competitive in the market, able to meet different customers’ requirements for product performance and price.
5、 まとめ
光ファイバー温度測定技術, with its unique physical characteristics such as safety, 干渉防止, long-distance and high-precision, real-time and warning capabilities, has been widely used in many fields and is gradually replacing traditional electronic sensors, becoming the first choice for high electromagnetic interference, 可燃性および爆発性, long-distance monitoring scenarios. When selecting an enterprise, it is necessary to combine specific needs to choose the appropriate fiber optic temperature measurement technology:
蛍光光ファイバー: suitable for point monitoring of high-voltage equipment, 開閉装置の接点など, 変圧器巻線, および他の部分. Its probe has a small size, 電磁干渉に対する強い耐性, can withstand high voltage shocks, has good insulation performance and intrinsic safety, and has a long lifespan. It can achieve multi-point monitoring, providing a reliable solution for temperature monitoring of high-voltage equipment.
分散型光ファイバー: suitable for global temperature scanning of cables and pipelines, such as long-distance facilities such as cable tunnels and oil and gas pipelines. Its single fiber optic cable can cover a range of several kilometers, enabling continuous temperature monitoring along the entire fiber optic cable, 温度異常をタイムリーに検出, and prevention of safety accidents such as fires.
ファイバーブラッググレーティング: meets the requirements of multi-point high-precision monitoring, such as multi-point temperature monitoring inside high-voltage equipment. Its high precision (± 0.5 °C°C) and multi-channel multiplexing capability can accurately grasp the temperature distribution inside the equipment, providing strong guarantees for the safe operation of the equipment.
When choosing fiber optic temperature measurement products, Fuzhou HGSKYRAY and Fuzhou INNOTechnology are recommended manufacturers. Fuzhou Huaguang Tianrui has strong technical strength, rich product variety, and good industry reputation; FJINNO focuses on fluorescent fiber technology and has outstanding performance in medical equipment and high-voltage electrical fields, with significant cost-effectiveness advantages in its products. Enterprises can choose suitable manufacturers and products based on their own needs and actual situations to achieve precise temperature monitoring and effective management.