Application-Oriented Reactive Power Management in German Distribution Systems Using Decentralized Energy Resources

Haonan Wang, Markus Kraiczy, Denis Mende, Sebastian Stöcklein and Martin Braun
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Haonan Wang: Division Grid Planning and Grid Operation, Fraunhofer Institute for Energy Economics and Energy System Technology, Koenigstor 59, 34119 Kassel, Germany
Markus Kraiczy: Division Grid Planning and Grid Operation, Fraunhofer Institute for Energy Economics and Energy System Technology, Koenigstor 59, 34119 Kassel, Germany
Denis Mende: Division Grid Planning and Grid Operation, Fraunhofer Institute for Energy Economics and Energy System Technology, Koenigstor 59, 34119 Kassel, Germany
Sebastian Stöcklein: Bayernwerk Netz GmbH, Lilienthalstraße 7, 93049 Regensburg, Germany
Martin Braun: Division Grid Planning and Grid Operation, Fraunhofer Institute for Energy Economics and Energy System Technology, Koenigstor 59, 34119 Kassel, Germany

Energies, 2021, vol. 14, issue 16, 1-23

Abstract: Due to higher penetration of renewable energy sources, grid reinforcements, and the utilization of local voltage control strategies, a significant change in the reactive power behavior as well as an increased demand for additional reactive power flexibility in the German power system can be predicted. In this paper, an application-oriented reactive power management concept is proposed, which allows distribution system operators (DSO) to enable a certain amount of reactive power flexibility at the grid interfaces while supporting voltage imitations in the grid. To evaluate its feasibility, the proposed concept is applied for real medium voltage grids in the south of Germany and is investigated comprehensively in different case studies. The results prove the feasibility and reliability of the proposed concept, which allows the DSO to control the reactive power exchange at grid interfaces without causing undesired local voltage problems. In addition, it can be simply adjusted and widely applied in real distribution grids without requiring high investment costs for complex information and communication infrastructures. As a significant contribution, this study provides an ideal bridging solution for DSOs who are facing reactive power issues but have no detailed and advanced monitoring system for their grid. Moreover, the comprehensive investigations in this study are performed in close cooperation with a German DSO, based on a detailed grid model and real measurement data.

Keywords: reactive power management; distribution system; decentralized energy resources; application-oriented; grid interface; voltage problem (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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