Method, system, and device for detecting cooling circuit of transformer oil

Abstract

The invention discloses a method for detecting a cooling circuit of transformer oil. The method comprises: collecting an oil temperature of the transformer oil in the cooling circuit and an actual working current value of an oil pump at the oil temperature; obtaining a theoretical working current value of the oil pump at the oil temperature according to the oil temperature; and determining workingstates of the oil pump and an oil flow line in the cooling circuit by analyzing the actual working current value and the theoretical working current value. According to the detecting method, the working states of the oil pump and the oil flow line in the cooling circuit can be accurately detected, and the operation states of the oil pump and the oil flow line can be comprehensively and actually reflected, so that the fault false alarm is reduced, and the detection reliability is improved. The invention also discloses a system and device for detecting the cooling circuit of the transformer, anelectric locomotive, and a computer readable storage medium, and all of which have the above technical effects.

Description

technical field [0001] The invention relates to the technical field of locomotive transformer management, in particular to a detection method for a transformer oil cooling circuit; and also relates to a detection system and device for a transformer oil cooling circuit, an electric locomotive and a computer-readable storage medium. Background technique [0002] The cooling method of the main transformer of an electric locomotive is to pump the transformer oil through an oil pump to a forced air cooling tower for cooling, and then return it to the transformer. If the oil pump cannot work normally, the temperature rise of the transformer may be abnormal during operation, so the oil pump needs to be monitored. In order to monitor the working state of the oil pump, an oil flow relay or a flow meter is usually installed in the oil circulation pipeline to judge whether the oil pump is working normally. However, the way of judging whether the oil pump is working normally through th...

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Problems solved by technology

However, the way of judging whether the oil pump is working normally through the oil flow relay has certain limitations. When the oil viscosity is low and the fluidity is good, the oil flow relay can well reflect the working state of the oil pump; , In the case of poor fluidity, when the oil flow velocity is not enough to make the force on the blades of the oil flow relay overcome the resistance of the damping spring, the oil flow relay cannot effectively reflect the actual working state of the oil pump, which will cause the oil flow relay to fail and the oil flow will Fault false alarm

And in the case of a large amount of leakage or blockage in the oil circulation pipeline, the oil flow relay cannot reflect the failure state of the pipeline

In addition, judging whether the oil pump is working normally through the flowmeter also has certain limitations, because the flowmeter will increase the resistance in the circulation pipeline, and the flowmeter will further reduce the flow of cooling oil in the case of high oil viscosity and poor fluidity Sexuality, which brings certain risks to the cooling of the system

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