On-line monitoring system for gas in transformer oil

Abstract

The invention relates to the technical field of electronic communication, and in particular relates to an on-line monitoring system for gas in transformer oil. The on-line monitoring system comprises an input pipe connected with a transformer, wherein the input pipe is connected with a gas cylinder of a tested oil degassing unit through a valve; the gas cylinder is connected with a plurality of pipelines which are connected with a sample injector; the sample injector is connected with a gas separation unit through a connection pipe; the gas separation unit is connected with a main control unit through a communication module. The on-line monitoring system has the advantages that by adopting an oil-gas separation device, preconditions such as cyclic oil taking from a circulating loop, no oil consumption, no oil pollution and no maintenance can be met, so that a sampling mode of the system cannot affect safe operation of main equipment; if the temperature is well controlled, high degassing efficiency and high speed can be realized; by adopting a reliable single-column separation chromatographic column, the detection precision and the stability of the equipment are guaranteed, and the communication module can help a main control console technology learn about the basic condition.

Description

technical field [0001] The invention relates to the field of electromechanical technology, and refers to a monitoring system, especially an online gas monitoring system in transformer oil. Background technique [0002] Transformer oil is a fractionation product of petroleum, and its main components are compounds such as alkanes, naphthenic saturated hydrocarbons, and aromatic unsaturated hydrocarbons. Commonly known as square shed oil, light yellow transparent liquid. It acts as an insulator: Transformer oil has a much higher dielectric strength than air. Immersing the insulating material in oil can not only improve the insulation strength, but also protect it from moisture erosion; heat dissipation: transformer oil has a large specific heat and is often used as a coolant. The heat generated during the operation of the transformer causes the oil close to the iron core and winding to expand and rise. Through the convection of the oil up and down, the heat is dissipated thro...

AI Technical Summary

Problems solved by technology

After the transformer oil is used for a long time, due to its environment, it is easy to produce gas, thus invisible the practicality of the entire transformer.

Therefore, regular detection of transformer oil is an indispensable procedure in the usual transformer maintenance work. However, if the transformer is stopped and re-tested, it will obviously increase the cost of transformer use, and there are disadvantages such as low efficiency.

In addition, the general oil-gas separation unit does not separate thoroughly, and cannot realize the functions of gas circulation and separation after separation, resulting in low detection accuracy

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