Conception of Domestic Final Energy Delivery Including EV Charging in Terms of Integrated Multimodal Grid Expansion

Abstract

Regarding the energy transition in terms of ecological and economical aspects, also the security in supply, safe and reliable operation and the desired ability to store renewable generated excess electrical power play a role in future grid expansion strategies. To support and release the electric grid, integrated energy systems, characterized by sectorcoupling between the energy sectors electricity, gas and heat, picture an approach to increase the storage and transmission capacity of a whole energy system. Concerning the demand side, it also has to be kept in consideration that not every kind of desired final energy has to be necessarily electrical. So power has to be supplied in the appropiate kind to satisfy the consumers’ requirements. Within the following contribution a holistic methodology is presented, which is able to deal with various compositions of domestic technical endowment for residential areas to acquire knowledge about necessary delivery power of the main three energy sectors. The types of final energy that will be considered are electricity for basic services and personal electric vehicles usage and heat for heating space and tap water. The desired kind of final energy can be delivered by onpoint power transformation, so the methodology includes several possible types of appliances and endowment. With the nearly infinite possible composition and input options it is transferable to residential areas of different dimensions and mirrors the high versatility and flexibility of the domestic sector as a decisive consumer, preliminary for later analysing e.g. whole urban areas and network infrastructures including the generators’ side. It serves as a tool to investigate in what manner power delivery characteristics change, when the configuration of final energy devices in the domestic sector is altered and what conclusions have to be drawn by the energy providers and especially the transmission system operators for electricity, gas and heat, in terms of integrated grid expansion strategies. That can either be used as a ”green meadow” approach for newly built development areas or for enlargement of already existing housing areas. Additionally to a detailed explanation of the methodology’s structure, some configuration scenarios are defined and the algorithm is executed for an exemplary residential area. Furthermore, some relevant objectives, like primary energy input, system efficiency or capital expenditure are declared to serve as rating criteria for evaluation of the investigated composition scenarios. The presented methodology provides a basis for (multi) criteria optimization of expansion strategies for integrated infrastructures in further research.