Method for suppressing attenuation of power carrier signal

A technology of power carrier wave and signal attenuation, which is applied in the direction of electric signal transmission system, signal transmission system, distribution line transmission system, etc. The effect of network drop and suppression attenuation

Active Publication Date: 2018-01-16
ZHUHAI KEHUI ELECTRICAL APPLIANCE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this can realize the copying of frozen power, it cannot realize the real-time monitoring and copying of the user's power consumption parameters. It is just a workaround

Method used

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  • Method for suppressing attenuation of power carrier signal
  • Method for suppressing attenuation of power carrier signal
  • Method for suppressing attenuation of power carrier signal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] After a lot of research, it is found that the main reasons for the failure of power carrier communication are as follows: After the carrier signal sent by the power carrier terminal is sent to the power line through the coupling circuit, under the influence of user load, interference signal, line impedance and other factors, the carrier signal At the receiving end, the level of the carrier signal is very small or even zero, which leads to communication failure. Among these influencing factors, the consumption of the carrier signal by the user load plays a decisive role.

[0039] Such as figure 1As shown, taking the low-voltage line as an example, Ri represents the user load, and there are two AC signals added to the power line, one is AC220V / 50Hz power signal, and the other is the power generated by carrier terminal 1 and carrier terminal 2 during interactive communication Carrier signal, the frequency of power carrier signal depends on the type of carrier module, the ...

Embodiment 2

[0055] Such as Figure 5 As shown in the figure, adding a magnetic bead between the carrier terminal and the user load, the magnetic bead will generate impedance to the carrier signal, so as to avoid the attenuation of the carrier signal on the user load.

Embodiment 3

[0057] Such as Image 6 As shown in the figure, a reactor is added between the carrier terminal and the user load, and the reactor will generate impedance to the carrier signal, so as to avoid the attenuation of the carrier signal on the user load.

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Abstract

The invention discloses a method for suppressing the attenuation of a power carrier signal. The power carrier signal is transmitted by a power line; the power line is used for transmitting a second electrical signal; a terminal of the power line is connected with a user load; a signal control unit is connected on the power line; and the signal control unit is normally opened for the second electrical signal, and is normally closed for the power carrier signal, so that the user load is not connected with the carrier signal, and suppression of the carrier signal by the user load is suppressed. Through adoption of the method, smooth and reliable transmission of the carrier signal between carrier terminals is ensured. Attenuation caused by a load on the carrier power line can be suppressed effectively.

Description

technical field [0001] The invention relates to the technical field of power carrier communication, in particular to a method for suppressing power carrier signal attenuation. Background technique [0002] Power line communication (PLC for short) is a technology that uses power lines as the information transmission medium to transmit the information that needs to be transmitted at high speed. With rapid development, this communication method is widely used in electric energy meter low-voltage centralized reading system in electric power department automation management, carrier routing communication in home intelligent communication, etc. Many manufacturers have launched various types of carrier communication watt-hour meters, carrier acquisition terminals, carrier concentrators, carrier routers, power modems and other terminal equipment for users to use. a large area of ​​application. [0003] In the actual application process of the power sector, it was found that there ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B3/54H04B3/56G08C19/00
Inventor 朱亚军林杰敏
Owner ZHUHAI KEHUI ELECTRICAL APPLIANCE CO LTD
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