Method for extending power line carrier transmission distance

A technology of power carrier and transmission distance, which is applied in distribution line transmission system, harmonic reduction device, AC network to reduce harmonic/ripple, etc., can solve transmission signal distortion, affect the popularization of power carrier application, and change transmission distance Short and other problems, to achieve the effect of removing the interference of harmonic noise

Inactive Publication Date: 2017-03-22
STATE GRID TIANJIN ELECTRIC POWER +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in actual use of power carrier, the transmission distance is often shortened due to the interference of harmonic noise, or the received transmission signal is distorted, which greatly affects the application and popularization of power carrier.

Method used

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Embodiment Construction

[0010] The present invention will be described in further detail below through specific examples. The following examples are only descriptive, not restrictive, and cannot limit the protection scope of the present invention.

[0011] A method for extending the transmission distance of the power carrier, which changes the transmission line of the power carrier from the traditional single-phase and N-phase to between the N-phase and the ground wire. The sending signal is connected between the N-phase and the ground through the coupling capacitor.

[0012] What has been described above is only a preferred embodiment of the present invention. It should be pointed out that for those of ordinary skill in the art, some modifications and improvements can be made without departing from the inventive concept, and these all belong to the scope of the present invention. protected range.

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PUM

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Abstract

The invention relates to a method for extending power line carrier transmission distance, a transmission line of power line carriers is changed into between an N phase and a ground wire from traditionally between a single phase and the N phase. A sending signal is connected to between the N phase and the ground through a coupling capacitor. The method changes the transmission line into between the N phase and the ground wire, basically removes interference of harmonic noise, and enables transmission distance of signals to be longer.

Description

technical field [0001] The invention belongs to the field of power carrier and relates to the extension of the transmission distance of the power carrier, in particular to a method for extending the transmission distance of the power carrier. Background technique [0002] Power Line Carrier-PLC communication is a special communication method that uses power lines as an information transmission medium for voice or data transmission. In the field of power carrier, power lines are generally divided into three categories: high, medium and low. Usually, high-voltage power lines refer to voltage levels of 35kV and above, medium-voltage power lines refer to voltage levels of 10kV or low-voltage distribution lines of 380 / 220V subscriber lines. The applicable occasion of the present invention is the situation of 380 / 220V under low-voltage power distribution. [0003] PLC is Power Line Carrier. Power Line Carrier (PLC) is a unique communication method for power systems. Power Line Ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B3/56H02J3/01
CPCY02E40/40
Inventor 欧干新张建良李延生刘彦婧杨涛刘阳肖建超李景贤
Owner STATE GRID TIANJIN ELECTRIC POWER
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