The importance of fiber optic grating temperature measurement systems in the power industry-INNO

Большая часть оборудования в энергетике находится в сильных электромагнитных полях., и общие электрические датчики не могут быть использованы.. Онлайн-мониторинг высоковольтных выключателей, а также определение в режиме реального времени температуры и параметров смещения в обмотках высоковольтных трансформаторов., статор генератора, и т. д., все они требуют хороших изоляционных характеристик и небольшого объема.. Защита от электромагнитных помех и безопасность волоконно-оптических решеток могут точно соответствовать требованиям для использования в таких условиях окружающей среды.. В сильной электромагнитной среде, безопасная эксплуатация основного основного электрооборудования является необходимой гарантией производства продукции предприятия, а также основной гарантией нормальной работы всего народного хозяйства.. The majority of faults in electrical equipment are caused by overheating, which can be mainly divided into external thermal faults and internal thermal faults.
Внешние тепловые повреждения электрооборудования в основном относятся к открытым соединениям, которые, из-за плохой обжимки и других причин, experience an increase in temperature under high current, oxidation of the contact points, leading to an increase in contact resistance and a vicious cycle causing hidden dangers. Этот тип неисправности составляет более 90% внешних тепловых повреждений. By collecting thousands of data on external thermal faults detected in recent years, it can be found that thermal faults of wire clamps and knife switch contacts account for 77% от общего количества внешних тепловых повреждений, with an average temperature rise of about 30C. The average temperature rise of other external joints is between 20C-25C.
The fiber optic grating online temperature monitoring system has the advantages of high insulation, unaffected by electromagnetic environment, подходит для дальних поездок, high-quality signal transmission, and high measurement accuracy. It is particularly suitable for use in high voltage and strong magnetic field environments such as electricity. Поэтому, it fundamentally solves the defects of traditional temperature measurement equipment and provides reliable technical support for the safe operation of power equipment.

Состав Fiber Bragg Grating Temperature Monitoring System

The fiber optic grating sensing system mainly consists of fiber optic grating sensors, optical fibers used for signal transmission, and fiber optic grating demodulation equipment. Fiber optic grating sensors are mainly used to obtain values of physical quantities such as temperature, напряжение, давление, перемещение, и т. д.. Fiber optic grating demodulation equipment is used to detect and process sensor signals to obtain measurement results, and remote sensing can be achieved through fiber optics.
Характеристики системы
Высокая безопасность: The signal processing and control unit of the entire system is located in a control room far away from the working area, and the temperature signal collection by sensors is carried out in a non electric (non electric) состояние, which is inherently safer;
Высокая точность: using fiber optic grating temperature sensors, with a typical accuracy of 1C;

Large capacity: The temperature measurement system can connect up to 32 датчики, each of which can connect 12 measurement points in series. A single device can complete up to 384 точки измерения температуры;
Convenient positioning: Through software association technology, it is possible to quickly locate the area or specific physical location of the measurement point;
Real time online measurement: The light source used in the system has a long service life (над 20 годы) and can meet the needs of real-time online and all-weather monitoring;
Быстрый ответ: The system response time should not exceed 60 seconds to ensure timely handling of accidents:

Simple and intuitive: The temperature of each measured point can be directly seen on the display screen of the temperature measurement system. After setting the temperature alarm threshold, the system automatically provides sound and light alarms:
Convenient deployment: The placement of sensors can be flexibly adjusted according to engineering needs;
Хорошая совместимость: Through various communication interfaces (serial port, network port, и т. д.), it can achieve communication with external systems
Good integration to improve data exchange speed between systems;
Длительный срок службы: can operate safely for over 20 years under normal working conditions.
High degree of automation: data can be directly input into systems such as DCS, ECS, SIS, MIS, и т. д.

System software functions
Display function: The display function of the three-dimensional process screen; Has multiple types of charts, system diagrams
Curve chart, more intuitive user interface;
Analysis function: Display historical trends, evaluate future trends, and provide maintenance reference information; Alarm function: Set fixed temperature and differential temperature warning values, fire alarm values, уровни тревоги, and geographical location names for different locations based on actual conditions; The system can set sound alarm function;
Printing function: It can print various reports;
Upload function: Real time temperature data can be uploaded online, making it easy to achieve unmanned operation:
Self check function: If a sensor in the system malfunctions, the faulty sensor can be identified through software;
Table Customization: Users can customize various tables, including real-time data tables, historical data and statistical reports, equipment parameter tables, списки тревог, commonly used data tables, catalog tables, memos, и т. д.
Query function: You can directly query device information, operating parameters, statistical information, и т. д.. on the system diagram.