Directional derivative-based method for quasi-stationary voltage support analysis of single-infeed VSC-HVDC units

Arcadio Perilla , José Luis Rueda Torres, Elyas Rakhshani, Roni Irnawan, Filipe Faria da Silva, Mart van der Meijden, Claus Leth Bak, Alex Alefragkis, Anna Lindefelt

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Abstract

This study presents an investigation of the impact of the quasi-stationary voltage support provided by a voltage source converter (VSC) connected to a single point of a power system. Based on the directional derivative concept, an analytical method is developed to quantify the sensitivities of the AC bus voltage with respect to the VSC reactive power control modes. Based on a real case study, it is shown that the method applies to VSC units that are part of VSC-HVDC systems, which can operate in a point-to-point or multi-terminal configuration. Time-domain simulations are performed to verify the findings from the application of the analytical method on a reduced size power system.

Original languageEnglish
Pages (from-to)511-522
Number of pages12
JournalHigh Voltage
Volume5
Issue number5
DOIs
Publication statusPublished - 2020

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