Modelling, analysis and virtual parallel resistor damping control of VSC‐based DC grid using master–slave control mode. Issue 9 (28th February 2018)

• Record Type: Journal Article
• Authors: Wan, Xun; Li, Yunfeng; Peng, Minfang
• Is Part Of: IET generation, transmission & distribution. Volume 12:Issue 9(2018)
• Page Start: 2046
• Page End: 2054
• Publication Date: 2018-02-28
• Subjects: control system synthesis -- HVDC power convertors -- HVDC power transmission -- power transmission control -- power grids -- power system stability -- matrix algebra -- voltage‐source convertors; virtual parallel resistor damping control design -- VSC‐based DC grid stability -- master–slave control mode -- generic linearised modelling method -- voltage source converter -- high‐voltage direct current system -- direct current grid -- DC network equivalent node‐admittance matrix -- Thévenin equivalent matrix -- simplified two‐terminal HVDC system -- root locus -- participation factors analysis -- linearised model -- instability suppression -- power‐controlled station N−1 fault -- DC system faults; Electric power production -- Periodicals; Electric power transmission -- Periodicals; Electric power distribution -- Periodicals; 621.3105
• DOI: 10.1049/iet-gtd.2017.1021
• Languages: English
• ISSNs: 1751-8687

Abstract

Abstract : This study presents a generic linearised modelling method and a virtual parallel resistor damping control for a voltage source converter‐based high‐voltage direct current (HVDC) system including a direct current (DC) grid. The generic modelling method is composed of DC network's equivalent node‐admittance matrix and the Thévenin equivalent matrix of all converters. A simplified two‐terminal HVDC system is used to identify the key factors influencing the stability of the DC grid easily. Those key factors are proved by two methods, namely, root locus and participation factors analysis. The parameters of the virtual parallel resistor damping control are designed using the simplified HVDC system. The performance of the proposed damping control is studied employing the linearised model of the DC grid. Time simulations such as instability suppressing, power‐controlled station N − 1 fault, and DC system faults are carried out to validate the effectiveness of the damping control.