PLC Based Monitoring of Energy System of a Family House

The development of the electronic equipment lead to rapid research and development in the field of renewable energy sources (RES) and utilization of renewable energy sources by householders. Usually the RES are part of the house energy system and it is strongly recommended to make integration of RES in the house energy system to be able to have synchronized work with the energy consumers and the other energy systems like heating and cooling, ventilation and water consumption facilities. That is the reason for the strong requirement to have good monitoring of the energy systems in all directions - production, accumulation and energy consumption. The problem in building of effective monitoring is that most of the vendors have their own systems to monitor their equipment and the interoperability between the equipment of different vendor usually is not easy. In this article we suggest a solution for ensuring the systems interoperability with utilization of PLC and SCADA systems based on the industrial protocol Modbus TCP. The proposed method ensure flexibility of the monitoring system and extension of the monitoring with devices of different vendors. An example of the house monitoring based on VICTRON Energy Solar Inverter equipped with battery storage is proposed.