In the process of constructing a New Power System, transformers serve as the core equipment of the power grid, and the timeliness and accuracy of their condition monitoring are directly tied to energy security. Relying on the independently developed photoacoustic spectroscopy online monitoring and early warning device for dissolved gases in transformer oil with 100% self-developed technologies, Hubei Infotech System Technology Co., Ltd. has achieved a leap from technological catching-up to international leadership, setting a new benchmark for the localization of China's power equipment.

Tech Independence: Breaking Monopolies and Defining New Industrial Standards

Infotech adheres to the independent innovation and R&D of core technologies, securing a comprehensive breakthrough in the field of photoacoustic spectroscopy detection for transformer oil and gas, and enabling the industry to realize the independent and controllable development of high-precision online monitoring technology for transformer oil and gas based on photoacoustic spectroscopy. Its independently developed online monitoring and early warning device for transformer oil and gas is China's first laser photoacoustic spectroscopy-based online transformer oil and gas monitoring product exported to the international market, truly embodying the concept of "Created in China, Applicable to the World".

• Independent R&D of Core Components: All key components including laser drive modules, photoelectric modulation units and gas circuit modules are independently developed and manufactured, breaking free from external supply dependence.
• Leading Algorithms: The original photoacoustic signal filtering and compensation algorithm significantly enhances detection accuracy and anti-interference capability.
• Open Platform: The device supports modular expansion and protocol compatibility, catering to the scenario-specific demands of different customers.

Application Value: An Operation and Maintenance Revolution from Post-failure Repair to Intelligent Inspection and Maintenance

The device upgrades traditional offline detection to real-time online intelligent diagnostic analysis and early warning, and can seamlessly integrate extended functions such as partial discharge monitoring and optical fiber temperature measurement. It delivers remarkable value to customers while drastically reducing the investment in integrated monitoring costs.

1. Elevated Safety Level

• Real-time monitoring of 8 key fault gases including H₂ and C₂H₂, with accurate identification of potential faults such as electrical discharge and overheating.
• The detection accuracy for acetylene alone reaches 0.1ppm, and the response speed is 75% faster than traditional methods, winning precious time for fault handling and resolution.

2. Reduced Whole-life Cycle Costs

• No carrier gas, no standard gas and no consumables required, cutting operation and maintenance costs by 50%.
• Modular design supports on-demand configuration and subsequent upgrades, avoiding repeated equipment investment.
• An ultra-long service life of 15 years reduces the frequency of equipment replacement and lowers the investment cost of intelligent operation and maintenance monitoring products for transformers.

3. Adaptability to Complex Application Environments

As a cutting-edge representative of technological innovation and a reliable partner for the intelligent operation and maintenance of power equipment, the device has been verified by multiple authoritative test reports to meet Class A standards in terms of relevant technical performance. It has also passed the EU CE certification issued by SGS, a world-renowned authoritative certification and testing institution. The device has operated stably in extreme environments including the ultra-low temperature of -48℃ in Heihe, the high-altitude arid areas of the Tianshan Mountains and the tropical humid regions of Fushan. It has passed multiple stringent tests conducted by State Grid Corporation of China, China Southern Power Grid and other major power grid enterprises, with its reliability fully validated in practical applications.

Practical Verification: An All-scenario Monitoring Solution

Domestically, the device currently holds a 90% market share in the niche market of photoacoustic spectroscopy-based transformer oil and gas monitoring, and a 60% installation rate in in-operation converter stations. It has been applied in major national projects such as 1000kV ultra-high voltage (UHV) AC transmission projects and ±800kV high-voltage direct current (HVDC) transmission projects, and its application has expanded from the power system to multiple industries including rail transit, petroleum and petrochemicals, and gas-fired power generation. Internationally, the R&D and manufacturing enterprise has established R&D and production cooperation with leading global power equipment monitoring enterprises, providing services to countries along the Belt and Road Initiative.

The R&D project of this device has been evaluated by numerous professional institutions for its scientific and technological achievements, with its core technologies and key technical performance reaching the international advanced level. It has won the First Prize of Hubei Provincial Science and Technology Progress Award. Multiple authoritative test reports confirm that the product's relevant technical performance complies with Class A standards, and it has obtained the EU CE certification from SGS, an international authoritative certification and testing organization. The product series have earned a host of honors, including being certified as a Qualified Product for Transformer Oil and Gas Online Monitoring Device by State Grid Corporation of China, securing the first place with an "Excellent Plus" rating in the centralized test of converter transformer acetylene rapid detection devices by State Grid, and receiving an "Excellent Plus" rating in the on-site assessment of high-reliability transformer oil and gas monitoring devices by State Grid.

Infotech's photoacoustic spectroscopy online monitoring device is more than just a technological product; it serves as a core support for the intelligent operation and maintenance system of power equipment. With fully independent technologies and proven reliability, the device provides safer, more economical and smarter transformer monitoring solutions for power customers around the world.