Gas relay for detecting transformer faults in real time, and diagnosis method thereof

Abstract

The invention relates to a gas relay for detecting transformer faults in real time, and a diagnosis method thereof. The gas relay comprises a gas relay body, an oil inlet, an oil outlet, a first gas pipe, a to-be-detected bottle, a gas relay vent valve and an acquisition and sending unit, and a fault gas detection module connected with the acquisition and sending unit and arranged in the to-be-detected bottle is used for detecting whether the to-be-detected bottle contains hydrocarbon gas, the concentration of the hydrocarbon gas, the gas color and irritating odor gas or not; and if the pressure sensor detects that the gas pressure in the gas relay body reaches a threshold K1, the gas inlet electromagnetic valve is controlled to be opened, and gas in the gas relay body enters the to-be-detected bottle through the gas inlet electromagnetic valve and the oil filter screen. Compared with the prior art, the method has the advantages that the severity degree of the transformer faults is comprehensively evaluated, extremely precious time is gained for operation, maintenance and overhaul of the transformer, and traditional operation personnel do not need to go to a transformer substationto take gas and return the gas to a laboratory for detection.

Description

technical field [0001] The invention belongs to the technical field of power equipment quality detection, and more specifically relates to a gas relay and a diagnostic method for real-time detection of transformer faults. Background technique [0002] The gas relay mainly plays a basic protective role inside the power transformer. The application of the gas relay shows that when the insulation of the transformer is rapidly decomposed or the transformer body has a discharge fault, the gas relay often quickly reflects the fault degree and disconnects in time. Power supply can effectively reduce the loss caused by transformer failure and avoid the expansion of transformer accidents. However, due to the air entering the transformer, temperature drop, etc., the gas relay often malfunctions (partially because air is mixed into the gas relay) and causes an alarm or trip. In fact, the transformer is not faulty, which seriously affects the reliable operation of the transformer. [0...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem of transformer damage or even burnout caused by misoperation of the transformer gas relay in the prior art due to other interferences that cause alarms, untimely gas detection and poor effectiveness of a single detection method, etc., and to improve the reliability of safe operation of the transformer, the purpose of the present invention is to , providing a gas relay for real-time detection and diagnosis of transformer faults and a method for identifying and judging transformer faults, quickly detecting whether the gas accumulated in the gas relay is a fault-produced gas or a non-fault-produced gas, by detecting the smell and composition of the gas , Color comprehensive research and judgment of the severity of the transformer failure, the device of the present invention quickly sends diagnostic information to the transformer operator through the cloud platform after detection, and can diagnose the transformer operation status before the transformer develops into a serious fault, and provide maintenance and repair for the transformer operator Gain valuable processing time and prevent transformer damage due to untimely processing

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