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    Item type:Publication, Access status: without files ,
    Integration of active operation into the planning phase of a medium-voltage distribution grid
    (IEEE, 2024-06)
    Heise, Johannes
    ;
    Mostafa, Marwan
    ;
    Teimourzadeh Baboli, Payam
    ;
    Becker, Christian
    The energy system is undergoing significant changes as part of the transition to a climate-neutral energy supply. This has a particular impact on distribution grids, which require new planning concepts and operational methods to integrate a large number of distributed generation units and flexible consumers. This paper investigates how linking planning with operation can improve traditional distribution grid planning. The proposed method includes traditional grid planning, minimizing the investment cost with a model for grid reinforcement by relocating typical ring structures and conducting active operations. The active operation is performed through an optimization problem containing the optimal scheduling of flexible loads, such as heat pumps (HP) and electric vehicles (EV), and distributed generation (DG), such as rooftop PVs. A case study is designed and performed using a benchmark MV-grid to demonstrate the effectiveness of the proposed method. The presented results demonstrate how integrating active operation could lead to significant cost savings when planning MV distribution grids.
    Publicationtype: Conference Paper
      49
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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