Transformer oil chromatography online monitoring device introduction
Date: September 11, 2025 07:33:52
Transformer oil chromatography online monitoring device is a device for real-time monitoring of dissolved gas content in transformer oil to diagnose latent faults within the transformer:
Working Principle
When there is local overheating or partial discharge in a transformer, the insulating oil or solid insulation at the fault site will decompose small molecules of hydrocarbon gases (e.g., CH4, C2H6, C2H4, C2H2, etc.) and other gases (e.g., H2, CO, etc.). The concentration of these gases in the oil and the total concentration of combustible gases (TCG) in the oil can be used as indicators for the diagnosis of internal transformer faults. The device adopts the principle of broad-spectrum gas chromatography analysis, sucking the transformer oil into the oil sample collection unit by differential pressure pump suction, and then after oil and gas separation and decontamination, the fault characteristic gases are introduced into the chromatographic column for separation, and then detected by the gas sensor, and finally analyzed and judged the operation status of the transformer through the data processing and fault diagnosis system.
system configuration
Mainly consists of oil circulation system, oil and gas separation system, cold trap, carrier gas regulation and control system, temperature control system, oil characteristics of fault gas chromatography detection unit, fault diagnosis and data management software (composed of industrial control computer and operating system), communication network and data remote control and access software.
Functional Features
- Real-time monitoring: Real-time tracking and monitoring of the status of the main transformer, synchronized display of the component content of the dissolved gases in the oil, can be installed, overhauled and maintained without power supply, and timely detection of hidden problems and defects in the equipment.
- fault diagnosis: Through the fault diagnosis expert system, the monitoring data are analyzed by using the improved three-ratio method, David's triangle method, etc., early forecasting of hidden equipment faults and information, and scientifically guiding the operation and maintenance of oil-immersed power high-voltage equipments, such as transformers.
- Data processing and transmissionIt is equipped with data acquisition, storage and processing functions, can provide reports and trend graphs, and has a long historical data storage life, such as GS-101H system data storage life ≥ 10 years. Meanwhile, it supports remote data transmission, and can realize all-digital and remote data transmission, control and parameter setting through Ethernet and other ways.
- Highly adaptable to the environment: It can adapt to harsh environments such as high cold, high temperature, high humidity, high altitude, etc., with high anti-interference performance and electromagnetic compatibility performance to meet the relevant standards.
Application Areas
Widely used in the power industry 110KV and above voltage level power transformers, arc furnace transformers, reactors and transformers and other oil-immersed high-voltage equipment, such as the operation of condition monitoring.
