A Fully Renewable DC Microgrid with Autonomous Power Distribution Algorithm
In this study, we propose an autonomous DC microgrid system for residential community with distributed power exchange control to increase the utilization of renewable natural energy and to ensure minimal energy supply in the event of a large-scale disaste
- PDF / 860,241 Bytes
- 15 Pages / 439.37 x 666.142 pts Page_size
- 3 Downloads / 281 Views
Abstract In this study, we propose an autonomous DC microgrid system for residential community with distributed power exchange control to increase the utilization of renewable natural energy and to ensure minimal energy supply in the event of a large-scale disaster. Assuming small community of 20 houses, each house in the microgrid has its own in-house system that can continue to provide power to appliances from its own batteries and solar panels even when disconnected from the utility grid or power outage. Using solar irradiation time series and individual household power demand records, we examined its performance using real-time simulations. Finally, we propose a sustainable power system based on renewable energy that further minimizes fossil fuel consumption by integrating a renewable auxiliary power supply system such as the hydrogen energy system. Keywords DC microgrid • Solar photovoltaic • Battery • Renewable energy • Hydrogen • Fuel cell • Power distribution
1 Introduction The imposed reduction of carbon dioxide emissions in many countries has helped increase the prevalence of renewable energy. However, mega solar and large wind power plants include large equipment and a burden for the power grid to absorb the output fluctuations. In Japan, this is one of the main hurdles that hinder the increased proportion of renewable energy. Indeed, as of 2012, renewable energy except hydropower only represents 1.6 % of the country’s electricity generation [1]. For this, self-sufficient power systems that are not dependent on the power grid and that can be deployed similarly to consumer electronics are gaining interest as a
N. Kitamura • K. Tanaka (*) Graduate School of Engineering, The University of Tokyo, Tokyo, Japan e-mail: [email protected]; [email protected] A. Werth Graduate School of Engineering, The University of Tokyo, Tokyo, Japan Sony Computer Science Laboratory Inc., Tokyo, Japan © Springer Japan 2017 M. Matsumoto et al. (eds.), Sustainability Through Innovation in Product Life Cycle Design, EcoProduction, DOI 10.1007/978-981-10-0471-1_61
899
900
N. Kitamura et al.
Fig. 1 Elemental subsystem for OES: a DC nanogrid
solution to both increase renewable power sources and to increase resilience in case of disasters [2, 3]. The system we propose uses as building blocks DC nanogrids including PV panels and secondary batteries in each house (Fig. 1). These subsystems are interconnected via a DC power bus, which is used to share energy resources such as PV or also an emergency power supply way even during power outages due to disaster (Fig. 2). An autonomous distributed grid system is thus built for a small community of houses. Furthermore, this system can flexibly expand over several layers by interconnecting not only houses but entire grid systems in a hierarchical way. We named this kind of DC microgrid system open energy systems (OES) [4]. In this paper, we focus on the control strategy of OES and propose an autonomous decentralized power exchange control for OES in order to imp
Data Loading...
