Asymmetrical carrier communication system of electric energy meter

Abstract

The invention relates to an asymmetrical carrier communication system of an electric energy meter, comprising an electric energy meter gateway, a control network bridge and a white information appliance load, wherein the electric energy meter gateway is accessed between a phase line and an N phase in a three-phase four-wire system at the low voltage side of a 10 kV / 0.4 kV distribution transformerof an electrical power system, the control network bridge is accessed between the phase line and N phase of the electrical power system by the electric energy meter gateway, the white information appliance load which is taken as a load is electrically connected with the control network bridge, and the digital communication is carried out between the electric energy meter gateway and the control network bridge and between the electric energy meter gateway and the white information appliance load; and a voltage mode FSK (frequency shift keying) or S-FSK (spread frequency shift keying) modulating signal is adopted for the communication between the electric energy meter gateway and the control network bridge, and a current mode FSK or S-FSK modulating signal is adopted for the communication from the control network bridge to the electric energy meter gateway.

Description

technical field [0001] The invention relates to a carrier communication system, in particular to a carrier communication system capable of performing control and information interaction through asymmetric power carrier digital communication between a master of an electric energy meter and a slave of white information appliances. Background technique [0002] The currently known electronic energy meters are all electric energy metering meters, or the power carrier concentrator (master) in the station transformer through the 380VAC three-phase four-wire power line and each power carrier energy meter (slave), for voltage coupling type power line Carrier energy meter centralized meter reading. At present, there is no electric energy meter as a gateway (host), and the power line output by the electric energy meter enters the user's home and the white information appliance (slave) in the user's home, and performs power carrier communication to implement information interaction an...

AI Technical Summary

Problems solved by technology

That is to say, the asymmetric power line carrier communication energy meter gateway can only carry out asymmetric power line carrier communication with the white information appliances powered by the output of the lower end of the asymmetric power line carrier communication energy meter gateway, and the 380VAC input from the upper end of the asymmetric power line carrier communication energy meter gateway The power line trunk has no power carrier communication device and carrier signal

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