Energy storage in power system operation: The power nodes modeling framework

Abstract

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The role of aggregation in power system simulation

“…The Power Node framework presented in [16] also allows to model an underlying grid infrastructure which describes the interconnections of the different Power Nodes. For this purpose, each node is mapped to a bus in the grid model and linear Direct Current (DC) power flow equations are introduced.…”

“…The master thesis directly builds on the theoretical foundations of the Power Nodes framework [16]. Some extensions have been necessary, notably regarding the implementation of non-linear effects, i.e.…”

“…Power Nodes is a concept originally developed by Heussen et al [16] which allows a system-level consideration of power grids composed of energy storages, controllable and non-controllable generators and loads under consideration of physical properties. [16].…”

“…In his thesis, Jonas [18] implemented an approach to model most existing power system units with the Power Node modeling framework presented in [16]. A predictive economic dispatch algorithm is utilized as optimization strategy to calculate the optimal dispatching such that generation and environmental costs are minimized.…”

“…First, we present an extension to the Power Node framework [16] which enables us to reflect the underlying physical principles of different Power Node types more accurately. Specifically, we show that only one binary variable per time step and unit is needed to incorporate a comprehensive set of non-linear constraints.…”