Power line carrier centralized meter reading system based on low voltage user electro-network topology

Abstract

The invention discloses a power line carrier centralized meter reading system based on low voltage user electro-network topology. The system comprises a first low-voltage power line carrier module and a second low-voltage power line carrier module, wherein the first low-voltage power line carrier module comprises a concentrator CPU, a first power carrier modem, a first zero phase identifier, a first buffer, a first low-pass filter, a first power amplifier, a first coupler, a third low-pass filter and a first amplifier; the second low-voltage power line carrier module comprises a watt hour meter data acquiring transmission CPU, a second power carrier modem, a second zero phase identifier, a second buffer, a second low-pass filter, a second power amplifier, a second coupler, a fourth low-pass filter and a first amplifier. The system is simple in structure, reasonable in design, high in automation degree, convenient to use and operate, and complete in function, the remote meter reading is realized, the manpower and material resource are saved, the work reliability is high, a use effect is good, and the popularization use is convenient.

Description

technical field [0001] The invention belongs to the technical field of electric power supply, and in particular relates to a power line carrier centralized meter reading system based on a low-voltage user power consumption network topology. Background technique [0002] With the promotion of the work of one meter per household in the power system, and the need for modernization of power supply and consumption management, the traditional manual meter reading, hand-held terminal meter reading, and vehicle radio meter reading are no longer suitable, and more and more The automatic centralized meter reading system has entered a practical stage. These meter reading systems work efficiently, provide the most accurate electricity calculations, and provide many monitoring and management functions for electricity consumption. The meter reading methods of the automatic centralized meter reading system include 485 bus meter reading, carrier meter reading, GPRS meter reading, etc., and...

AI Technical Summary

Problems solved by technology

② Noise interference on the power line restricts the transmission quality of the signal

It can be seen that because there are many factors on the low-voltage power line that cause the signal-to-noise ratio of the carrier signal to drop sharply, it is difficult for the carrier signal to be transmitted well in a power supply area, so it is necessary to adopt various technical measures to construct a network that satisfies Carrier system actually needed

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