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    Item type:Publication, Access status: without files ,
    Influence of grid aggregation on short circuit properties
    (IEEE, 2025-02)
    Heckel, Jan-Peter
    ;
    Hube, Philipp
    ;
    Becker, Christian
    The shift from conventional towards renewable energies causes a transition from centralized to decentralized generation. Decentralized energy resources lead to challenges but also chances for the operation of future power grids. Therefore, stability and protection phenomena are addressed. Different simulations need to be performed to prove the suitability of future power grids. These simulations include dynamic simulations with high numerical effort. For many applications, this numerical complexity needs to be reduced to ensure real-time capability or to perform simulations for many different systems and scenarios. A method for reducing the numerical complexity is grid aggregation. However, grid aggregation implies an error to the investigations. This error needs to be estimated. In this paper, it is demonstrated that the influence of grid aggregation on the grid's short circuit properties is small enough to use grid aggregation for grid protection studies. The paper's investigations were motivated by similar findings about the influence of grid aggregation on voltage stability properties.
    Publicationtype: Conference Paper
      26
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    Quantitative Benefit Analysis of Adaptive and Conventional Distance Protection Parameterizations
    (IEEE, 2024-06)
    Hube, Philipp
    ;
    Heckel, Jan-Peter
    ;
    Becker, Christian
    Conventional grid protection is parameterized with a single generalized parameter set for a variety of different operating scenarios. With an increase in installation of distributed variable energy resources and grid reinforcements, the variety of scenarios increases and an optimal protection can no longer be guaranteed. Furthermore, renewable energy infeed is limited when protection is not guaranteed. Hence, this paper compares a new adaptive parametrization approach with standard methods applying simulations in Mat-lab/Simulink, focusing on a distance protection model adjusted for grid topology and feed-in changes. Consequently, this paper aims to confirm not only the benefit but also the necessity of adaptive distance protection in future grids. The effectiveness of both protection methods is tested within various scenarios, emphasizing fault detection, tripping time, and fault location accuracy. The results show that the adaptive concept offers enhanced reliability which will result in significant financial benefits, recommending its adoption in renewable energy systems.
    Publicationtype: Conference Paper
      65