Abstract
This work presents in a simple and practical way how read from a computer the energy values recorded by standard energy meters installed in PV grid connected systems in order to be monitored local or remotely. This communication can be easily implemented as a software program itself or integrated as a part in any other monitoring software. Remote energy metering for PV grid connected installations is used, exclusively in most of the installations, by the electrical company for remote energy metering and automatic billing. Energy meters communications from any manufacturer must fulfill the IEC 870-5-102 standard, mandatory in Spain, and complemented by the Electrical Grid Company, REE, regulation. For remote energy metering the user must install a GSM modem and supply to the electrical companies the phone number and counters addresses and passwords in order to perform automatic energy telereadings using software programs. Local energy metering is easily implementable trough energy meters RS485 network and the communication protocol explained in this work.
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