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Mapping and Analysis of the Reactive Power Balance in the Danish Transmission Network

Author

Listed:
  • Mads Øbro Nannestad

    (Center for Electric Power and Energy, Technical University of Denmark (DTU), 2800 Kgs. Lyngby, Denmark
    Energinet, Tonne Kjærsvej 65, DK-7000 Fredericia, Denmark)

  • Zhe Zhang

    (Center for Electric Power and Energy, Technical University of Denmark (DTU), 2800 Kgs. Lyngby, Denmark)

  • Jundi Jia

    (Center for Electric Power and Energy, Technical University of Denmark (DTU), 2800 Kgs. Lyngby, Denmark)

  • Emil Kjær Jensen

    (Energinet, Tonne Kjærsvej 65, DK-7000 Fredericia, Denmark)

  • Peter Jan Randewijk

    (Center for Bachelor of Engineering Studies, Technical University of Denmark (DTU), DK-2750 Ballerup, Denmark)

Abstract

This paper investigates the reactive power balance of the Zealand side of the Danish transmission system (DK2) by using QV-curves. The study is performed in cooperation with Energinet, who is the Danish transmission system operator (TSO). Firstly, this paper aims to map the reactive power balance with the current challenges in the system, which appears due to a decision of changing overhead lines in the scenic area to cables. Secondly, a method is derived for obtaining a comprehensive overview of the impacts that future projects might have on the system. By dividing the transmission system into smaller areas, it is possible to analyze how the reactive power will affect the voltage; moreover, it is favorable to analyze and handle the challenges in the reactive power balance locally. This helps the TSO to quickly determine the lack of reactive power devices and issues that might occur in future expansions of the system. For this paper, a full-scale model of DK2 and SCADA-data has been utilized. It covers the period from 01-01-2016 to 20-08-2017 between the TSO and the Distribution System Operator (DSO). The studies have shown how the location of the wind production will create issues in the reactive power balance.

Suggested Citation

  • Mads Øbro Nannestad & Zhe Zhang & Jundi Jia & Emil Kjær Jensen & Peter Jan Randewijk, 2019. "Mapping and Analysis of the Reactive Power Balance in the Danish Transmission Network," Energies, MDPI, vol. 12(3), pages 1-15, January.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:3:p:419-:d:201619
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