Fiber Bragg Grating for Temperature Sensing for Power Monitoring-INNO

Fiber optic grating temperature sensors can measure the temperature of many objects being measured, with precise measurement and stable performance.

In the development process of China’s power system, the issue of electricity safety has become increasingly prominent. Accidents occur frequently, mostly due to the current passing through certain parts, causing local overheating and not being detected in a timely manner. これを踏まえて, 温度監視, 画面, and alarm for certain key areas. If accidents occur, timely measures should be taken to avoid safety accidents.

The traditional temperature measurement methods in power systems mainly include two types: contact and non-contact measurement. Thermal resistance temperature measurement, 熱電対温度測定, and infrared temperature measurement are common temperature measurement methods in practical applications. Traditional methods are susceptible to environmental temperature and electromagnetic interference due to device measurement limitations, making it difficult to measure accurately. 同時に, traditional sensors also bring some problems to the insulation protection of the power system, thus reducing the insulation protection level of the power system. To compensate for the limitations of traditional methods, fiber optic grating temperature measurement technology has emerged. A new type of sensor using fiber optic as the medium overcomes electromagnetic interference in the power system environment, and due to the excellent physical, 化学薬品, mechanical properties and transmission performance of fiber optic, it has advantages that traditional sensors cannot compare with.

fiber bragg grating sensors for temperature measurement

光ファイバー通信と統合光技術の発展により, 光ファイバーセンシング技術はセンサーの分野で栄えています. Compared with traditional methods, 光ファイバーセンサーの利点は機能特性ではありません, しかし、彼ら自身の身体的特徴に由来する. 光ファイバーセンサーは軽量という特徴があります, 細い直径, small signal attenuation, 強い耐食性, 電磁妨害耐性, および高温耐性. 情報のセンシングと送信を統合するという利点もあります。, 従来の検出技術では解決できなかった測定問題を解決できる. まず最初に, 光ファイバー自体の絶縁性能が優れている, 電力系統と計測機器間の高電圧を絶縁できます。, 温度測定装置による設備安全事故の回避, and greatly improving safety. Using optical fibers as carriers for transmitting and sensing signals can overcome the strong electromagnetic interference problem in data transmission in the power system environment, thus obtaining more accurate measurement results. 第二に, due to the good flexibility of the optical fiber, it can detect areas that conventional sensors cannot reach. これらの利点により、 fiber optic sensors stand out in the field of temperature measurement in power systems, gradually replacing other sensor measurement methods and making them more suitable as the main means of temperature measurement for high-voltage switchgear.

fiber bragg grating temperature sensor for practical use

The fiber optic sensor is connected to the fiber optic grating signal processor, and finally communicates with the backend computer through the RS485 communication port; The monitored temperature data is saved in the computer and displayed on the screen, thus achieving the purpose of monitoring the temperature of cable joints. When the temperature of the cable joint is abnormal, the system will give an alarm signal

Fiber optic grating temperature sensors and optical splitter boxes are used to collect data from measurement points and transmit optical paths. Real time temperature detection was conducted on 10 開閉装置キャビネット, including the 10kV main incoming, connecting bridge, and important branch circuits, in a certain substation. Each switchgear cabinet was tested for the static contacts on the busbar side of the short-circuit breaker, the static contacts on the line side, and the three-phase temperature of the cable connection bar, 約 9 ポイント. Sensors were installed on the tested nodes, and the optical branch box was installed on the switchgear panel.

FJINNO has solved the commonly used monitoring methods and their advantages and disadvantages for real-time temperature monitoring of high-voltage switchgear. The application of fiber optic gratings in the field of power system temperature control, as a novel sensing and detection technology, has received widespread attention since its inception.