Electronic monitor for content of fault gas in transformer gas relay

Abstract

The invention belongs to the technical field of transformers and particularly relates to an electronic monitor for content of fault gas in a transformer gas relay. The electronic monitor for the content of the fault gas in the transformer gas relay comprises a gas relay, and is characterized in that the gas relay is internally provided with a gas sensor; the gas sensor is connected with a microprocessor; and the microprocessor is connected with a contact for outputting an alarming signal through an electronic relay. The electronic monitor has the beneficial effects that the content of the collected fault gas can be analyzed in real time, and signals including fault gas content increasing early warning, excessive alarming and the like are sent according to requirements; networking communication of monitored data is realized, and the transformer can be conveniently and intensively monitored; the electronic monitor has small volume, high precision, strong anti-interference capability, low power consumption and convenience for operation; and the aims that the content of the fault gas in the gas relay is remotely monitored in real time, and faults possibly happening in the transformer are found in real time are realized.

Description

(1) Technical field [0001] The invention belongs to the technical field of transformers, in particular to an electronic monitor for faulty gas content in a transformer gas relay. (2) Background technology [0002] When faults such as inter-turn and inter-layer short circuits, iron core faults, internal faults of bushings, internal disconnection of windings and insulation deterioration, poor contact of tap switches or poor welding of wires occur in the oil-immersed transformer, the insulating material will be damaged due to the arc. It decomposes and produces some gas, and its fault gas content varies with the severity of the fault. The gas relay is the main component that uses the fault gas state to protect the internal fault of the transformer. When a slight fault occurs inside the transformer, the generated gas rises and first accumulates in the upper space of the gas relay. When the gas reaches a certain amount, the contacts are closed and a signal is sent to pro...

AI Technical Summary

Problems solved by technology

This traditional fault signal method can only send out an alarm or protection signal after the fault occurs, and cannot monitor the entire process of the fault generation online in real time, and it is difficult to effectively prevent the fault from further deterioration

When the alarm or protection signal is issued, the fault may have been serious, which will bring hidden dangers to the safe operation of the transformer

In addition, this kind of signal may also be wrongly sent out under the interference of some external factors (such as earthquakes), and this traditional method cannot realize computer communication, and it is difficult to realize remote monitoring. It cannot meet the requirements of smart grid development for centralized real-time monitoring of equipment

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