أفضل مصنع لأجهزة استشعار درجة حرارة الألياف الضوئية لمراقبة درجة حرارة المحولات في الصين

Fiber optic temperature measurement of oil immersed transformer windings is an advanced temperature monitoring technology. The following is a related introduction:

Principle of Temperature Measurement

قياس درجة حرارة الألياف الفلورية: using the sensitivity of fluorescent substances in the fiber to temperature changes to measure temperature. When the fiber optic thermometer sends an inquiry light pulse to the sensor, the fluorescent substance absorbs the light energy and emits fluorescence. The intensity and lifetime of fluorescence are related to temperature, and the thermometer calculates the temperature value by detecting these characteristics.
الألياف البصرية الموزعة قياس درجة الحرارة: Based on the principles of optical time domain reflection technology and Raman scattering effect, laser transmission in the fiber will generate backward Raman scattering light, whose intensity changes with the temperature of the fiber. By measuring the intensity of backward Raman scattering and using optical time domain positioning technology, distributed measurement of temperature along the fiber optic line can be achieved.

Composition of temperature measurement system

مستشعرات الألياف البصرية: are key components for temperature measurement, such as fluorescent fiber optic sensors or distributed fiber optic sensors, used to sense changes in winding temperature.
Temperature measurement host: responsible for sending inquiry light signals or lasers to fiber optic sensors, and receiving light signals returned from sensors, analyzing and processing them to calculate temperature values.
نقل الألياف الضوئية: Connect the fiber optic sensor to the temperature measurement host for transmitting optical signals.
Backend monitoring system: Receive temperature data sent by the temperature measurement host, and perform functions such as display, خزن, تحليل, and alarm to facilitate operation and maintenance personnel to grasp the temperature status of transformer windings in real time.

طريقة التثبيت

Pre embedded installation: During the manufacturing process of transformers, fiber optic sensors are pre embedded in designated positions inside the winding to ensure close contact between the sensor and the winding, and to more accurately measure the temperature distribution inside the winding. لكن, this method cannot be used for transformers that have already been put into operation.
Post installation: للمحولات في الخدمة, the internal body of the transformer can be lifted out using a hanging cover, and fiber optic temperature sensors can be installed on the winding surface or other locations where temperature measurement is required. بعد التثبيت, the transformer can be reassembled. بالإضافة, there is also a magnetic installation method, but its temperature measurement accuracy is relatively low and may be affected by external magnetic fields.

ميزة

قدرة قوية ضد التدخل: Optical fibers themselves have electromagnetic insulation, لا تتأثر بالتداخل الكهرومغناطيسي, and are not afraid of the impact of harsh environments such as high voltage, درجة حرارة عالية, ضربات البرق, الخ. They can work stably in strong electromagnetic fields, ضمان دقة وموثوقية بيانات قياس درجة الحرارة.
دقة قياس درجات الحرارة العالية: The temperature measurement accuracy of fluorescent fiber optic sensors can usually reach ± 1 ℃ or higher, and the accuracy of distributed fiber optic temperature measurement systems can also reach around ± 1 °C, which can accurately reflect the actual temperature of the winding.
Good real-time performance: It can achieve real-time online monitoring of transformer winding temperature. The temperature measurement device can transmit temperature data in real time to the monitoring background. With professional monitoring software, it can evaluate and analyze the operation status of the transformer in real time, and detect temperature anomalies in a timely manner.
High temperature and high voltage resistance: suitable for high temperature and high voltage environments inside oil immersed transformers, ضمان عملية موثوقة على المدى الطويل.
السلامة الجوهرية: Fiber optic sensors are passive and do not introduce additional electrical sparks or heat, avoiding safety hazards when used in hazardous environments such as flammable and explosive environments.
نطاق واسع لقياس درجة الحرارة: It can cover a wide temperature range from -40 درجه مئوية إلى +250 درجه مئوية, تلبية احتياجات قياس درجة الحرارة للمحولات في ظل ظروف التشغيل المختلفة.
حجم صغير, خفيفة الوزن, سهلة التركيب: أجهزة استشعار الألياف الضوئية صغيرة الحجم وخفيفة الوزن, مما يجعلها سهلة التركيب في مواضع مختلفة من ملفات المحولات دون التأثير بشكل كبير على هيكل وأداء اللفات.

أهمية التطبيق

تحسين سلامة تشغيل المحولات: المراقبة في الوقت الحقيقي لدرجة حرارة الملف يمكن أن تكتشف وتتخذ التدابير في الوقت المناسب عندما ترتفع درجة الحرارة بشكل غير طبيعي, تجنب بشكل فعال الأخطاء الناجمة عن ارتفاع درجة الحرارة, مثل شيخوخة العزل, تلف متعرج, انهيار العزل, الخ., وتحسين سلامة وموثوقية تشغيل المحولات.
إطالة عمر خدمة المحولات: يساعد التحكم الدقيق في درجة حرارة الملف على ضبط حمل المحولات بشكل معقول, avoid long-term overload operation, thereby slowing down the aging process of insulation materials and extending the service life of transformers.
Optimizing transformer performance: providing a basis for controlling the cooling system of transformers, achieving intelligent start stop of the cooling system, improving cooling efficiency, and reducing energy consumption. في نفس الوقت, it also helps optimize the operating parameters and control strategies of transformers, improving their overall performance.

مستشعر درجة حرارة الألياف البصرية, نظام مراقبة ذكي, الشركة المصنعة للألياف البصرية الموزعة في الصين