return

Modular ICT based Energy Management System for a LVDC-Microgrid with Local PV Production and Integrated Electrochemical Storage


 
 
Contact   Ellert Christoph
 
Title   Modular ICT based Energy Management System for a LVDC-Microgrid with Local PV Production and Integrated Electrochemical Storage
 
Author(s)   Ellert Ch., Horta R., Sterren T., Gabioud D., Roggo D., Moix P.-O.
 
References   Proc. of the 2nd IEEE International Conference on DC Microgrids (ICDCM), Nürnberg, Germany, June 27-29, 2017
 
Url   http://ieeexplore.ieee.org/document/8001056/
 
Abstract   The HES-SO Valais has installed a PV-generator, where each PV-module is individually linked to the 700V DC-bus power line via an individual DC/DC voltage converter with integrated maximum power point tracker. A battery storage system is connected to the DC-bus for local energy storage. The polar +/-350 V DC bus voltage is controlled by an AC/DC converter interfacing the system to the low voltage AC grid. The entire system is presently extended to a microgrid (see figure1) with multiple functionalities like local consumers commonly used on industrial sites and an electrolysis system. The PV plant is optimized by individual PV microconverters (with MPPTs) and will be extended to integrate strings of several modules with up to 1000 Vdc. Both integrated Li-Ion and Pb battery storage systems are controlled through bi-directional commercially available DC/DC converters (modified version). In order to achieve full monitoring, supervision and energy management capability a modular ICT system interconnecting the microgrid power components, a SCADA system and an Energy Management System (EMS) have been designed. A program (target power exchange profile) for the power exchange between the microgrid and the distribution grid will be established 48 hours ahead of time. The EMS orchestrates the flexible microgrid components so that the program can be followed with a deviation of less than 1 %.
 
 
 
 
HES-SO Valais-Wallis • Route du Rawyl 47 • CP • 1950 Sion 2
+41 27 606 85 11 • info@hevs.ch • www.hevs.ch