The lecture entitled Methods and Future Scenarios for Strategic Grid Development of Full Low and Medium Voltage DSO Supply Areas by Barbara Herndler was deliverered on 11th of December 2023.

Abstract

Due to the expansion of distributed generation systems (especially photovoltaics) and the increasing electrification of the demand side (especially electric vehicles, heat pumps), a visibly increasing load on the distribution networks can be expected over the next 30 years. Along with this, there will be a corresponding need for network expansion in the distribution networks in the coming years and decades.

The aim of the lecture is to provide a comprehensive statement about the future need for network expansion. Additionally the effectiveness of various measures to upgrade the network and to assist network operators in developing strategic plans based on the outcomes recent project in Austria.

1) Forecasting the future development or rollout of relevant technologies in the distribution networks. This primarily includes distributed generation systems (especially photovoltaics), essential electrical consumers (especially electromobility and heat pumps) and storage systems.

2) Assessment of the medium and long-term network expansion needs in the medium and low-voltage network infrastructure of different distribution network operators with the defined expansion forecasts based on comprehensive, area-wide network simulations.

3) Definition and technical analysis of various strategies for upgrading the distribution networks to cope with the expected expansion of systems. This includes, among other things, line reinforcements, new station construction, reactive and active power controls on distributed systems, power compounding, use of controllable local network transformers, increasing system voltages and other measures.