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Signal conditioning circuit for remote monitoring system of distribution transformer

A technology of remote monitoring system and signal conditioning circuit, applied in the field of auxiliary systems, can solve problems such as high frequency interference, spectrum aliasing, influence control, etc., and achieve the effects of low cost, few components, and easy implementation.

Inactive Publication Date: 2013-10-23
CHENGDU RONGYAO TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The signals collected by the monitoring system are usually accompanied by high-frequency signals, which are prone to spectrum aliasing and high-frequency interference, which will affect the controller of the distribution transformer monitoring system to make correct control

Method used

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  • Signal conditioning circuit for remote monitoring system of distribution transformer

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Embodiment

[0013] Such as figure 1 As shown, the signal conditioning circuit used in the distribution transformer remote monitoring system includes the acquisition signal input line 1, the first resistor R1, the second resistor R2, the first capacitor C1, the following amplifier circuit and the conditioning signal output line 2, wherein , the follower amplifier circuit is preferably implemented by the first operational amplifier A1, the inverting input terminal of the first operational amplifier A1 is connected to its output terminal, the first operational amplifier A1 is connected to the power supply VCC and is provided with a grounding line. Both ends of the second resistor R2 are respectively connected to the acquisition signal input line 1 and the non-inverting input end of the first operational amplifier A1, and the conditioning signal output line 2 is connected to the output end of the first operational amplifier A1. One end of the first resistor R1 is connected to the acquisition ...

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Abstract

The invention discloses a signal conditioning circuit for a remote monitoring system of a distribution transformer. The signal conditioning circuit comprises an acquired signal input line (1), a first resistor (R1), a second resistor (R2), a first capacitor (C1), a follow-up amplifying circuit and a conditioning signal output line (2), wherein the two ends of the second resistor (R2) are connected with the acquired signal input line (1) and the input end of the follow-up amplifying circuit respectively; the conditioning signal output line (2) is connected with the output end of the follow-up amplifying circuit; one end of the first resistor (R1) is connected to the acquired signal input line (1), and the other end of the first resistor (R1) is grounded; and one end of the first capacitor (C1) is connected to a circuit between the second resistor (R2) and the input end of the follow-up amplifying circuit, and the other end of the first capacitor (C1) is grounded. Due to the adoption of the signal conditioning circuit, high-frequency signals in acquired signals can be filtered, spectrum aliasing and high-frequency interference of signals can be prevented, and correct judgment of a controller of the monitoring system is prevented from being influenced by high-frequency signals.

Description

Technical field [0001] The auxiliary system that involves the power distribution transformer involves a signal conditioning circuit in the remote monitoring system of the power distribution transformer. Background technique [0002] With the development of the industry, the requirements of power supply reliability and stability of the power system in various industries have increased. The power distribution transformer is used as the core link of the power system.It is the basic data of the entire distribution network.Therefore, the safe operation of the power distribution transformer is essential for the power system.In order to monitor the power distribution transformer, the existing power distribution transformer is generally equipped with a wireless communication -based monitoring system. The monitoring system often analyzes and processes the current signal of the distribution transformer to achieve remote monitoring of the power distribution transformer.The signal collected ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03H11/28H03H11/30
Inventor 曾嵘高宏宇钟翼罗怡罗涛张宗刚刘进朝
Owner CHENGDU RONGYAO TECH
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