Transformer DGA Online Monitoring Systems

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Application Scenarios ; Oil-immersed transformers of 132 kV and above for power plants, substations, railway traction substations and special transformers.

Core Value ; Real-time dissolved gas analysis provides early warning of hidden transformer faults, helping ensure stable and reliable power supply.

Core Advantages ; Advanced gas chromatography with self-generated carrier gas ensures maintenance-free operation. Flexible wall or floor mounting available.

Open Communication ; Supports IEC61850, Modbus, Ethernet, and RS485 for seamless SCADA integration.

Power Equipment Online Monitoring Systems

Products Related To DGA Online Monitoring Systems

GWDG-PAS Transformer Photoacoustic Multi-Gas DGA System

Desc

The GWDG-PAS is an online multi-gas dissolved gas analysis (DGA) monitoring system developed and manufactured by GoWatron. It is primarily designed for critical oil-immersed power transformers rated at 132 kV and above. Depending on project requirements, it can also be applied to oil-immersed transformers and reactors of other voltage classes.
Based on photoacoustic spectroscopy (PAS), the system integrates oil sampling and circulation, oil-gas separation, gas measurement, data analysis, alarm management, and remote communication. It periodically measures seven key dissolved fault gases in transformer oil: hydrogen (H₂), carbon monoxide (CO), carbon dioxide (CO₂), methane (CH₄), ethylene (C₂H₄), ethane (C₂H₆), and acetylene (C₂H₂). Optional moisture-in-oil and transformer core grounding current monitoring modules are also available.
Unlike conventional online gas chromatography systems that require carrier gas and chromatographic columns, the GWDG-PAS does not require conventional carrier gas, chromatographic columns, or chemical reagents. This reduces consumable use and routine maintenance requirements. The system records gas concentrations, historical trends, and gas generation rates, providing essential data for the early detection of overheating, partial discharge, low-energy discharge, arcing, and degradation of solid insulation within transformers.

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GWDG-GC online multi-gas DGA system specifications for oil-immersed transformers

GWDG-GC Transformer Multi-Gas DGA System

Desc

The GoWatron GWDG-GC Online Multi-Gas DGA System uses gas chromatography to monitor multiple fault gases dissolved in transformer insulating oil. It is designed for oil-immersed transformers with rated voltages of 132 kV and above.
The system automatically collects oil samples at preset intervals and measures key dissolved fault gases. It can also monitor moisture in oil and transformer core grounding status. By analyzing gas concentrations, gas generation rates, and historical trends, the system helps identify potential overheating, electrical discharge, and insulation deterioration, providing reliable data for early fault warning, condition assessment, and maintenance planning.

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