Conversion of a Network Section with Loads, Storage Systems and Renewable Generation Sources into a Smart Microgrid

Abstract

This paper shows an experimental application case to convert a part of the grid formed by renewable generation sources, storage systems, and loads into a smart microgrid. This transformation will achieve greater efficiency and autonomy in its management. If we add to this the analysis of all the data that has been recorded and the correct management of the energy produced and stored, we can achieve a reduction in the electricity consumption of the distribution grid and, with this, a reduction in the associated bill. To achieve this transformation in the grid, we must provide it with intelligence. To achieve this, a four steps procedure are proposed: identification and description of the elements, integration of the elements in the same data network, establishing communication between the elements and the control system, creating an interface that allows control of the entire network. The microgrid of CEDER-CIEMAT (Renewable Energy Centre in Soria, Spain) is presented as a real case study. This centre is made up of various sources of generation, storage, and consumption. All the elements that make up the microgrid are incorporated into free software, Home Assistant, allowing real-time control and monitoring of all of them thanks to the intelligence that has been provided to the grid. The novelty of this paper is that it describes a procedure that is not reported in the current literature and that, being developed with Home Assistant, is free and allows the control and management of a microgrid from any device (mobile, PC) and from any place, even though not on the same data network as the microgrid.

Open Source Monitoring and Alarm System for Smart Microgrids Operation and Maintenance Management

“…To implement the alarm system, the MG monitoring and alarm system must be developed using Home Assistant [26]. All components of the microgrid, as well as the management system, must be connected to the MG's data network, which is an Ethernet data network in this case.…”

Integration of LFP-second life batteries as a storage in a smart microgrid

“…Figure 8 shows a diagram of communications of the control system in the microgrid with the energy storage system and the converter [19]. Once Modbus is established as a way of communication with the BMS of the system as well as with the converter of the grid, it is necessary to define the equipment in the configuration of the software used for the management of the system.…”

Cooperative Multi-Objective Optimization of DC Multi-Microgrid Systems in Distribution Networks

“…Since the national carbon neutrality and carbon peak requirements have been put forward [1], low carbon emissions and new energy have become hot research topics [2,3]. It is a trend to replace petrol vehicles with electric vehicles (EVs) and replace regional largescale power grids with microgrids (MGs) containing renewable energy sources (RESs) [4,5]. As the output of RESs is intermittent and uncertain, the MGs need to coordinate with the distribution network to centrally regulate the RESs, which is a challenge to the operation mode of the traditional power system.…”