Anti-interference electronic transformer acquisition device and method

Abstract

The invention discloses an anti-interference electronic transformer acquisition device and method. The anti-interference electronic transformer acquisition device comprises an electromagnetic closed isolation machine box, a signal input / output interface, a power module, a controller, a dual A / D conversion module, and a low-pass filter; the power module, the controller, the dual A / D conversion module and the low-pass filter are installed in the electromagnetic enclosed isolation machine box; the electromagnetic enclosed isolation machine box adopts a closed structure; the signal input / output interface and the interface of the power module are sealed and connected to the electromagnetic enclosed isolation machine box; the signal input interface is electrically connected to the low-pass filter; the low-pass filter is electrically connected to the dual A / D module; the dual A / D module is electrically connected to the controller; and the controller is electrically connected to the signal output interface. The invention eliminates the influence of electromagnetism on the electromagnetic transformer acquisition device in the substation, and eliminates the influence of the high frequency and high voltage interference signal generated after the disconnecting switch of the substation on the collecting device, and improves the acquisition reliability of the acquisition device.

Description

technical field [0001] The invention belongs to the technical field of anti-interference electronic transformer acquisition devices, and in particular relates to an anti-interference electronic transformer acquisition device and method. Background technique [0002] The electronic transformer transmits the current and voltage of the transformer body to the acquisition card through a small signal, and then converts the electrical signal into an optical signal through the acquisition card and transmits it to the merging unit. Therefore, the normal operation of the acquisition card plays a vital role for the electronic transformer. [0003] The acquisition card is usually placed in the GIS terminal box next to the primary equipment of the substation, where there is strong interference. Analyzing the actual operation experience and accident investigation conclusions in recent years, we can find the electric, magnetic and ground potential changes that will occur in the daily oper...

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Problems solved by technology

[0003] The acquisition card is usually placed in the GIS terminal box next to the primary equipment of the substation, where there is strong interference. Analyzing the actual operation experience and accident investigation conclusions in recent years, we can find the electric, magnetic and ground potential changes that will occur in the daily operation of the substation , such a change will cause the acquisition card to generate instantaneous acquisition abnormalities, and even cause damage to the acquisition card, which will seriously affect the operation safety of the equipment.

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