Multi-zone LVDC distribution systems architecture for facilitating low carbon technologies uptake

Abstract

Low voltage direct current (LVDC) distribution systems have recently been considered as an alternative approach to provide flexible infrastructure with enhanced controllability to facilitate the integration of low-carbon technologies (LCTs). To date, there is no business-as-usual example of LVDC for utility applications and only few trials have been developed so far. The deployment of LVDC in general will present revolutionary changes in LV distribution networks. This will require a rethinking of network design principles and the enablement of integrated solutions. This discussion paper reviews the current practice in utility-scale LVDC distribution networks worldwide. The paper also presents a new multizone architecture approach which can be used to better understand future of LVDC systems, and exploit their inherent flexibility to allow synergistic integration of multiple energy technologies.

A Novel Fault Let-Through Energy Based Fault Location for LVDC Distribution Networks

“…Time t1 is selected based on overcurrent detection. By combining the two energy balance equations, the inductance of the fault path can be derived by (3). Each term in (3) is defined in (4).…”

“…LVDC distribution systems are being considered as an appropriate solution for increasing the capacity of existing LV networks to meet the anticipated growth in transport and heat T he authors are with Institute for Energy and Environment, Department of Electrical and Electronic Engineering, University of Strathclyde, Glasgow G1 demands while also facilitating the integration of LCTs. Currently, the design and implementation of LVDC distribution systems are being investigated, including examples in Finland, Japan, Korea, and China [3]. Benefits such as energy saving, enhanced controllability, and extra capacity have been reported as outcomes from these projects [3].…”

“…Currently, the design and implementation of LVDC distribution systems are being investigated, including examples in Finland, Japan, Korea, and China [3]. Benefits such as energy saving, enhanced controllability, and extra capacity have been reported as outcomes from these projects [3]. Also, these efforts have been recently supported by the International Electrotechnical Commission (IEC) [4].…”