Transformer oil level operation safety monitoring device based on wireless communication

Abstract

The invention discloses a transformer oil level operation safety monitoring device based on wireless communication. The device comprises a background management system, a communication module, a main controller, an information collector and an ultrasonic oil level sensor. The ultrasonic oil level sensor generates a data signal; the information collector collects data signals from the ultrasonic oil level sensor, amplifies the data signals and then transmits the data signals to the main controller. The main controller carries out algorithm processing on the data signal to obtain detection data and transmits the detection data to the background management system through the communication module; the background management system compares the detection data with pre-stored data and then judges whether the oil level state has risks or not, and the remaining use duration is calculated according to the detection data. According to the invention, non-contact measurement of the oil level of the oil conservator of the transformer is realized, and judgment of the remaining service life of the oil level is given.

Description

technical field [0001] The invention relates to the field of transformer oil level monitoring. Background technique [0002] At present, more and more substations are unattended. If the oil level, which is very important for the operation of transformers, is displayed inaccurately or lacks an early warning mechanism, it will lead to low reliability of the status perception of core substation equipment. With the smart grid and In the ubiquitous power Internet of Things construction, the concept of "prevention before it happens" is clear, and the early warning and monitoring mechanism of transformer oil level has attracted much attention. [0003] The oil level gauge is an important monitoring device for oil-immersed electrical equipment such as transformers, and tube and pointer oil level gauges are commonly used. The two oil level gauges will show inaccurate or even invalid after long-term operation, commonly known as "false oil level", which will bring great harm to the op...

AI Technical Summary

Problems solved by technology

The two oil level gauges will show inaccurate or even invalid after long-term operation, commonly known as "false oil level", which will bring great harm to the operation of oil-immersed electrical equipment such as transformers

The detection of the oil level of the oil conservator generally adopts two methods of horizontal glass tube indication or metal float type oil level gauge. To cause the change of the watch needle, since both are purely mechanical structures, they must be in direct contact with the transformer oil for detection. In this way, when the capsule in the oil pillow ruptures, the pressure is abnormal or the floating ball ruptures, the connecting rod is bent, the watch needle is stuck, etc. When a fault occurs, most of the oil conservator needs to be disassembled for maintenance. After the maintenance is completed, a series of long-term, weather-constrained and expensive operations such as sealing test, vacuuming, and oil filling are required for the oil conservator.

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