Ausgestaltung des lastflussbasierten Kapazitätsmodells im zukünftigen europäischen Strombinnenmarkt

Wyrwoll, Lothar Michael; Moser, Albert (Thesis advisor); Rehtanz, Christian (Thesis advisor)

1. Auflage. - Aachen : printproduction M. Wolff GmbH (2022)
Book, Dissertation / PhD Thesis

In: Aachener Beiträge zur Energieversorgung 219
Page(s)/Article-Nr.: vi, 136 Seiten : Illustrationen, Diagramme, Karten

Dissertation, RWTH Aachen University, 2022

Abstract

International electricity exchange plays an important role in the decarbonisation of the European energy supply system, as it enables the efficient distribution of volatile feed-in from renewable energy plants (RES) across Europe. Therefore, the EU is striving for ever greater integration of the national electricity markets, taking into account the limited transmission capacities. In order to couple individual European market areas, Flow-Based Market Coupling (FBMC) has been successively introduced since 2015 in addition to the Net-Transfer-Capacities (NTC) capacity model practised to date. This enables a more efficient utilisation of the physical transmission capacities, as it better reflects the power flow in the European transmission grid. A number of questions regarding the design of FBMC remain unanswered. These include, among others, whether an extension to further market areas is appropriate, how non-FBMC bidding zones are to be integrated into the FBMC capacity model (so-called Hybrid Market Coupling), how the flexibility of power flow controlling devices such as phase-shifting transformers is to be taken into account within the FBMC capacity model, and what minimum capacities are to be kept available for imports and exports. The long-term design of market coupling in the European internal electricity market represents the research project of the thesis. In this research work, a model for system analysis is developed to map the calculation and use of transmission capacities. This consists of the modules capacity calculation, bidding of the trading participants, determination of prices, imports and exports as well as utilisation of the available transmission capacities, and finally the management of the remaining congestion. The special features of the system analysis model are that the market coupling is not considered within a fundamental model that integrates bidding and price determination, but is modelled on the basis of the real processes in price determination, and that it is able to depict the flexibility of power flow controlling devices in capacity determination. Within the framework of a parameter study, the future design of the FBMC model is evaluated in a scenario for the year 2035 based on the criteria of generation costs, CO2 emissions and curtailment of RES as a result of electricity trading and congestion management. In particular, the choice of minimum capacities turns out to be very sensitive to the evaluation criteria. A novel concept of Hybrid Market Coupling, known as Advanced Hybrid Market Coupling, proves to be advantageous with regard to the selected evaluation criteria, especially in the case of low minimum capacities. In contrast, an extension of the FBMC capacity model to further member states on the periphery of the European continent as well as the consideration of phase-shifting transformers in the FBMC capacity model does not appear to be beneficial.