Online liquid level monitoring method and system for oil-immersed transformer

Abstract

The invention provides an online liquid level monitoring method for an oil-immersed transformer. The method comprises the following steps: S1, installing a magnetic turning plate liquid level meter ona transformer, and monitoring a liquid level state; S2, setting identity data of an intelligent liquid level online monitoring device, and periodically acquiring oil liquid data; S3, carrying out communication with a central main station through an NB-IoT network by the intelligent liquid level online monitoring device; S4, processing and analyzing the identity data and the oil liquid data and transmitting the identity data and the oil liquid data to mobile equipment by the central main station. In addition, an online liquid level monitoring system for an oil-immersed transformer comprises asimulation unit, a remote signaling unit, a communication unit, a main control unit and a power supply; the simulation unit is used for collecting the oil temperature of transformer oil; the remote signaling unit is used for performing liquid level variable acquisition on the transformer oil; the communication unit is connected with the central master station through an NB-IoT network and transmits the oil liquid data and the identity data to the central main station; the main control unit is used for data processing; the power supply is used for system power supply. Therefore, technical problems that traditional oil level monitoring consumes time and labor, whether an oil level gauge works normally or not cannot be judged, and measurement is inaccurate are solved.

Description

technical field [0001] The invention relates to the technical field of transformers, in particular to an online liquid level monitoring method and system for an oil-immersed transformer. Background technique [0002] Transformers are devices that use the principle of electromagnetic induction to change AC voltage. According to different cooling methods, they can be divided into dry-type transformers, oil-immersed transformers, and fluoride transformers. Oil-immersed transformers use oil for cooling, insulation and other functions. If the oil level in the transformer oil tank is too high, the internal oil pressure of the transformer will increase, and it is easy to spill oil. At this time, measures to drain oil should be taken; if the oil level is too low, the lead wires or iron core of the transformer will be exposed to the air, causing internal flashover Danger, and due to the increase of the oil-air contact surface, the insulation of the transformer oil will drop rapidly,...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the deficiencies of the prior art, the present invention provides an oil-immersed transformer online liquid level monitoring method and system, which solves the problem of time-consuming and labor-consuming traditional oil level monitoring, and the inability to determine whether the oil level gauge is working normally, and the measurement inaccurate technical issues

Images