Energy-saving partial discharge signal acquisition device

Abstract

The invention provides an energy-saving partial discharge signal acquisition device. According to the energy-saving partial discharge signal acquisition device, a first ultrahigh frequency partial discharge sensor interface, a first filtering amplification circuit and a first acquisition circuit are sequentially connected in an end-to-end mode and output to an input end of the controller, a second ultrahigh frequency partial discharge sensor interface, a second filtering amplification circuit and a second acquisition circuit are sequentially connected in an end-to-end mode and output to the input end of the controller, a noise sensor interface respectively outputs to input ends of the first and second filtering amplification circuits through a signal distribution module, a supersonic wave partial discharge sensor interface, a third filtering amplification circuit and a third acquisition circuit are sequentially connected in the end-to-end mode and output to the input end of the controller, a power frequency signal input interface, a power frequency period triggering circuit and the input end of end of the controller are sequentially connected in the end-to-end mode, the input end of the controller is connected with a human body inductor to detect whether human beings approach or not, the detection result is outputted, the output end of the controller is connected with an LCD to display the acquired result, on and off of the LCD are controlled by the controller according to the detection result, and thereby power consumption is reduced.

Description

technical field [0001] The invention relates to the technical field of signal processing, in particular to an energy-saving partial discharge signal acquisition device. Background technique [0002] The data acquisition device for partial discharge signals of high-voltage equipment in the power system can transmit the signals collected by various sensors to the background server for further data processing through analog-to-digital conversion. The current data acquisition devices for partial discharge signals are mainly realized by self-made or existing data acquisition cards. [0003] However, when the partial discharge phenomenon of GIS, transformer and other equipment in the voltage transmission and distribution substation occurs, UHF signals and ultrasonic signals will be generated; when the current data acquisition device detects multiple high-voltage equipment or performs fault location, The number of sensors that need to be collected increases, there is interference ...

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Problems solved by technology

[0004] In view of the above-mentioned shortcomings of the prior art, the object of the present invention is to provide an energy-saving partial discharge signal acquisition device, which is used to solve the problems in the prior art due to the large number of sensors, mutual interference, and whether the detected partial discharge signal is irrelevant. Whether it is operated by someone, the display screen is always displayed, causing a waste of electricity

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