A PLC based monitoring and remote control architecture for Distributed Generation and Storage systems in LV smart grids

(Abstract) This paper proposes a new power line communication (PLC) architecture for monitoring and remote control of Distributed Generators (DG) and Energy Storage Systems (ESS) connected to low voltage distribution networks. The final aim is to improve the performance of the PLC link in terms of robustness and efficiency in devices addressing. The proposed solution is based on a concentrator, to be installed in secondary substation, and a new PLC bridge, to be linked both to inverters and interface protection systems of DGs or ESSs. In this way, a communication link is obtained between distribution system operator (DSO) and DG or ESS owners. The proposed system is able to provide advanced functions for the remote control of DGs and ESSs inverters, not only in terms of remote disconnection but also in terms of adjusting the inverter operating modes.

I. Introduction

The development and the rapid spread of generation power plants from renewable sources at every voltage level, from large wind farms to domestic photovoltaic generation system, deeply mutated the structure of the electrical networks. These changes require a complex electricity network, able to accommodate countless producers/consumers at the same time and allowing the exchange of bidirectional energy flows. This can be achieved only introducing new devices for accurate monitoring, remote control and communication between prosumers and distribution system operators (DSO), thus transforming distribution networks into Smart Grids (SG) [1]–[5].