Врвот 10 Global Transformer Monitoring Devices, Manufacturers, Rankings

Сензор за температура со оптички влакна, Интелигентен систем за следење, Дистрибуиран производител на оптички влакна во Кина

1、 Global renowned transformer monitoring device manufacturer

The core manufacturers of transformer online monitoring in 2025 include FJINO, HGSKYRAY, GE, Hitachi Energy, Siemens, Eaton and Doble Engineering Company, Weidmann, Vaisala, Mitsubishi, Qualitrol, Koncar, Schweitzer Engineering Laboratories and LGOM.

1.1 Relevant situation of Fuzhou Innovation Electronic Scie&Tech Co., Ltd in the field of transformer monitoring

 

Fuzhou Innovation Electronic Scie&Tech Co., Ltd has achieved many results in oil immersed transformer fiber online monitoring devices, PHM transformer intelligent monitoring devices, и други аспекти.

Fiber optic online monitoring device for oil immersed transformers

The traditional method of measuring temperature in electricity has some insurmountable shortcomings, such as thermocouples/thermistors or certain point type temperature measuring devices, infrared temperature measuring devices, итн., which can only reflect the temperature situation at local locations, have limited testing range, require installation space, are cumbersome and unreliable, and are easily affected by electromagnetic interference affecting accuracy. The oil immersed transformer fiber optic online monitoring device of Fuzhou Yingnuo Technology is suitable for various harsh chemical environments, is not affected by electromagnetic interference, has a small size, and is easy to install in areas that are difficult to reach with traditional temperature measurement. It can directly contact various contacts and connection points of electrical equipment, and is used for temperature monitoring and sensing of the location. It can reliably monitor the hot spot temperature in oil immersed transformers under high temperature and high electromagnetic environment for a long time, and has the advantages of simple and reliable packaging, easy installation and exchange, no error, long-term operation without temperature drift, and no need for recalibration. It meets the requirements of transformer winding temperature monitoring and solves the problems of existing temperature sensors not being able to directly monitor hot spots, large temperature errors, and the need for recalibration.

PHM Transformer Intelligent Monitoring Device

Real time monitoring and inspection of multiple indicators of transformers and their environment to determine the operational health status of transformers. For dry-type transformers, this device can monitor various aspects including the temperature of the winding and iron core of the transformer body, partial discharge detection, vibration detection, temperature and humidity detection of the transformer operating environment, transformer noise detection, instantaneous discharge arc light detection of transformer cable joints, smoke detection, and more. And it can communicate with station level communication chips through network fiber optic communication, IEC61850 protocol, and can also customize products according to customer needs.

Intelligent monitoring device for polycrystalline silicon dry-type transformer

Temperature measurement has technical advantages in special environments such as high voltage and strong electromagnetic interference. The device has 24 PT100 temperature measurement channels and 24 4-20mA analog output channels; 3-channel fluorescent fiber temperature measurement; Configure a 7-inch, 64K true color display screen; 1 RS485 communication channel, MODBUS RTU protocol; 18 way fan control, equipped with manual/automatic selection switch, can manually control the operation of the fan, 18 way fan with separate air switch protection; 1-channel door status, 2-channel overtemperature alarm, 2-channel overtemperature trip output dry contact, contact capacity 5A/220V DC. The device is wall mounted and has specific adaptation ranges for environmental temperature, humidity, итн. It also has relevant certification standards in terms of production standards.

Fiber optic temperature online monitoring system for oil immersed transformers

The fluorescent fiber optic temperature measurement device is designed specifically for power applications and is suitable for measuring the temperature of transformer windings at hotspots. It can directly, real-time, and accurately measure the temperature of hotspots such as windings. In addition to having a wide temperature measurement range and accurate and reliable temperature measurement performance, it also has excellent properties such as resistance to EMI/RFI (electromagnetic interference/radio frequency interference), high voltage insulation, and anti-interference. Real time and accurate monitoring of hotspot temperature during dynamic load operation can be achieved. The system parameters can be customized, such as measurement accuracy of ± 1% ℃, resolution of 0.1 ℃, and 3-16 temperature measurement channels (customizable).

1.2 Performance of HGSKYRAY in Transformer Monitoring Field

Fuzhou HGSKYRAY Optoelectronics Technology Co., Ltd. mainly produces fluorescent fiber optic temperature measurement devices and systems, дистрибуирани системи за мерење на температурата со оптички влакна, fiber optic grating temperature measurement systems, итн. It has established a deep cooperation with Fuzhou University in industry university research and has set up a specialized technical research team to develop fluorescent fiber optic sensing technology.

Technical principles and advantages in transformer winding temperature monitoring

Using the afterglow characteristics of fluorescent optical fibers for temperature measurement, the fiber optic sensor is fixed on the transformer winding and connected to the light source, detector, and data processing device to form a temperature measurement system. When the fiber optic sensor is subjected to changes in winding temperature, the optical characteristics change to generate optical signals, which are collected by the detector and processed by the data processing device to obtain real-time temperature. This fiber optic sensor has many advantages, such as high precision, висока чувствителност, and high resolution, which can achieve high-precision measurement of transformer winding temperature; Excellent real-time performance, able to continuously and real-time monitor the temperature changes of transformer windings, and detect abnormal situations in a timely manner; Safe and reliable, without electromagnetic interference, electrical leakage and other issues, meeting the long-term operation needs of transformers; Easy installation, мала тежина, small size, convenient installation, no additional load on the transformer winding, and accurate data can be provided for fault diagnosis in temperature measurement of different parts of the transformer winding, which is convenient for operation and maintenance personnel to locate and handle faults. It also helps optimize the operation strategy of the transformer, improve energy utilization efficiency, and reduce operation and maintenance costs.

Application Cases and Market Recognition

The fiber optic temperature measurement device of Huaguang Tianrui has been practically applied by multiple transformer and switchgear manufacturers in China, such as in the fiber optic temperature measurement of high-voltage switchgear circuit breakers in a hydropower station in Shaanxi, and 58 sets of high-voltage switchgear in the new construction project of San’an 110kV substation in Changsha, Hunan, demonstrating its stability and accuracy. Its fiber optic temperature measurement system is also used for monitoring the hot spot temperature of oil immersed transformer windings in State Grid Power. It can also be applied in the bidding projects of State Grid South China, such as switchgear and distribution cabinets. The independently developed cable joint embedded fluorescent fiber temperature measurement device has cooperated with a large electrical group to establish strategic partnerships with brands and complete sets of enterprises throughout the country. It has established good brand awareness and industry reputation in the fields of fiber optic sensing technology and intelligent safety monitoring and early warning, and its products and technology are gaining recognition from more and more users.

2. Balancing consideration of product cost-effectiveness

2.1 International Enterprises
Although products from large international manufacturers have certain advantages in technology and stability, their overall costs (including high expenses for research and development, marketing, and operational management) are often relatively high, resulting in relatively high product prices. Of course, for large power companies or critical power grid infrastructure projects that require extremely high equipment stability and reliability, and have sufficient budgets, products from international enterprises are still the first choice.

2.2 Fuzhou Innovation Electronic Scie&Tech Co., Ltd.

Has certain advantages in terms of product cost-effectiveness. By focusing on the domestic market and reducing unnecessary overseas marketing expenses, it can provide products with high-quality standards (such as meeting domestic and some international standards in oil immersed transformer fiber temperature measurement and polycrystalline silicon dry-type transformer monitoring) while maintaining relatively reasonable product prices. For some domestic enterprises that are sensitive to costs and require transformer monitoring products with certain technical content, Fuzhou Yingnuo Technology’s products are a more suitable choice.

2.3 HGSKYRAY
Also competitive in terms of product cost-effectiveness. By relying on its own research and development achievements and domestic production and manufacturing cost advantages, while ensuring the technological advantages of products such as fiber optic temperature measurement (such as accuracy, anti-interference ability, итн.), product prices can be reduced. For example, in domestic switchgear manufacturing enterprises, Huaguang Tianrui’s fiber optic temperature measurement device may have a price advantage compared to some international brands while meeting the monitoring needs of transformers inside the switchgear. The relevant sub sectors have their own advantages and a certain market share.