OPERATION PRINCIPLES FOR TEMPORARY ISLANDED MICROGRIDS CONSIDERING FAIRNESS OF SUPPLY

IET conference proceedings., vol. 2021, pp. 1592–1596

Abstract

The increasing amount of small-scale generation units and storage systems installed in distribution grids, along with a roll-out of automation technology, opens up new possibilities to bridge large-scale power outages on a regional level. This will allow grid operators to maintain supply to consumers that become ever-more dependent on the supply of electricity, even for heating and mobility needs. In such a scheme, operators can resupply areas with sufficient generation capacity without the need for mobile grid-replacement units. This contribution introduces modelling techniques for technical constraints and degrees of freedom of this temporary islanded microgrid operation by expanding upon algorithms for optimal distribution switching, with a focus on the medium voltage level. The operation schemes for these TIMs include the option to disconnect consumers when the generation capacity is insufficient. During prolonged outages an equal distribution of the limited resources should be considered a goal for such a system to increase societal acceptance. For this, different measures of fairness are introduced and their effect on the operational scheme is assessed. It can be confirmed that increasing these measures of fairness will usually decrease the more technical objectives, such as the minimisation of unsupplied energy.

Authors 3

1. Thomas Offergeld Aachen Institute for High Voltage Equipment and Grids

   RWTH Aachen University · Fraunhofer Institute for Applied Information Technology

   Affiliation as printed

   Fraunhofer Institute for Applied Information Technology FIT, Aachen, Germany

   Institute for High Voltage Equipment and Grids, Digitalization and Energy Economics (IAEW), RWTH Aachen University, Aachen, Germany

2. Dominik Willenberg Aachen Institute for High Voltage Equipment and Grids

   RWTH Aachen University

   Affiliation as printed

   Institute for High Voltage Equipment and Grids, Digitalization and Energy Economics (IAEW), RWTH Aachen University, Aachen, Germany

3. Philipp Linnartz Aachen Institute for High Voltage Equipment and Grids

   RWTH Aachen University

   Affiliation as printed

   Institute for High Voltage Equipment and Grids, Digitalization and Energy Economics (IAEW), RWTH Aachen University, Aachen, Germany