Device and method for detecting pollution of insulator by image analysis combined with ultrasonic principle

Abstract

The invention discloses a device for detecting pollution of insulator by image analysis combined with an ultrasonic principle. The device comprises a collecting unit, a host machine and a computer provided with an insulator pollution fault analysis system, wherein the collecting unit is connected with the host machine through a signal transmission line and comprises an ultrasonic wave signal sensor, a high power high precision telescope camera, a temperature sensor and a humidity sensor. The host machine comprises an AD (Analogue to Digital) converter, an amplifier, a filter and a controller. The method for detecting pollution of insulator by image analysis combined with the ultrasonic principle and the corresponding instrument and device can judge the grade in real time for the insulator pollution degree, pre-warm pollution flashover immediately and carry out normalized management on insulator quality and condition of the power transmission line, thereby effectively inhibiting safe operation accidents caused by fault of the insulator. Therefore, realization and popularization of the invention generate huge direct and indirect economic and social benefits to safe and stable operation of a power grid.

Description

technical field [0001] The invention relates to the technical field of power grid insulator pollution detection equipment, in particular to a device and method for detecting insulator pollution by image analysis combined with ultrasonic principles. Background technique [0002] Power grid anti-pollution flashover is an ancient and realistic problem. With the rapid development of my country's economy, on the one hand, the demand for electricity is increasing day by day, the voltage level of power system transmission lines is constantly increasing, the scale of the power grid is constantly expanding, and the number of AC and DC connections is increasing. On the other hand, the pollution sources in various regions are constantly increasing. Air pollution intensifies. The surface of insulators exposed to polluted conditions will deposit foul air pollution, which will lead to an increase in the coverage of unavoidable pollution flashover. The safe operation of my country's power...

AI Technical Summary

Problems solved by technology

However, this method is expensive and has high requirements for power supply equipment and measuring instruments.

At the same time, it is not easy to capture the timing on-site measurement, because the accumulation level of natural pollution reaches a critical state, and the meteorological conditions that cause pollution flashover cannot occur at the same time, often the pollution degree has reached a critical level, but there is no sufficient wet condition But the critical pollution flashover voltage cannot be measured

The field application of this method is limited by equipment and conditions, and it is difficult to be widely used

[0009] The above-mentioned methods have the disadvantages of being unable to conduct charged detection, unstable optical components, unable to determine the analytical expression due to complex surface characteristics, being too affected by environmental variables, expensive and not conducive to large-scale promotion and use, etc.

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