Measurement method of transformer oil conservator oil level based on dual ultrasonic detection

Abstract

The invention discloses a method for measuring the oil level of a transformer oil conservator based on dual ultrasonic detection, which is provided with an ultrasonic double probe, a signal acquisition module, a signal processing module and a display module; the ultrasonic double probe has two straight probes arranged in parallel up and down, The two straight probes respectively emit a beam of ultrasonic longitudinal waves; during measurement, the ultrasonic dual probes are attached to the outer wall of the oil conservator and move up and down along the height direction of the oil conservator, and the two beams of ultrasonic longitudinal waves emitted by them can pass through the metal wall of the oil conservator For the insulating oil inside the thick and oil conservator, the ultrasonic longitudinal wave generates reflected signals on the interface of different media passing through and is received by the signal acquisition module. After receiving the reflected signals, the signal acquisition module feeds back to the signal processing module and is processed by the signal processing module. The oil level of the oil conservator; the present invention can quickly and accurately detect the oil level inside the transformer oil conservator without stopping the transformer, and the measurement is stable and repeatable; The real oil level in the pillow.

Description

technical field [0001] The invention relates to the technical field of power system testing, in particular to a method for measuring the oil level of a transformer oil conservator based on dual ultrasonic detection. Background technique [0002] As the key equipment of the power system, the transformer's operational reliability is closely related to the safety and stability of the power system. Impregnating insulating materials in transformer oil can not only improve the internal insulation strength of the transformer, but also avoid moisture erosion. Therefore, the amount of insulating oil inside the transformer not only affects the insulation level of the transformer equipment, but also affects the service life of the insulating material inside the transformer and the heat dissipation capacity during operation. If the oil level of the oil conservator is too high, when the transformer is fully loaded or overloaded, it will cause faults such as transformer oil spillage; tri...

AI Technical Summary

Problems solved by technology

If the oil level of the oil conservator is too high, when the transformer is fully loaded or overloaded, it will cause faults such as transformer oil spillage; trip

At the same time, the phenomenon of false oil level caused by the bending and breaking of the connecting rod of the oil gauge, the falling off of the gauge pointer, and failure also greatly increases the possibility of misjudgment by traditional manual visual inspection when the oil level is abnormal.

Therefore, how to quickly and accurately measure the oil level inside the transformer oil conservator and keep the oil level in the transformer oil conservator within the normal value range has become a problem and challenge that has plagued engineers and technicians for a long time.

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