Zero-sequence voltage compensation of a distribution network through a four-wire modular multilevel static synchronous compensator. (July 2019)

• Record Type: Journal Article
• Authors: Duarte, Samuel N.; Ghetti, Frederico T.; de Almeida, Pedro M.; Barbosa, Pedro G.
• Is Part Of: International journal of electrical power & energy systems. Volume 109(2019)
• Page Start: 57
• Page End: 72
• Publication Date: 2019-07
• Subjects: Modular multilevel converter -- Static synchronous compensator -- Zero-sequence; Electrical engineering -- Periodicals; Electric power systems -- Periodicals; Électrotechnique -- Périodiques; Réseaux électriques (Énergie) -- Périodiques; Electric power systems; Electrical engineering; Periodicals; 621.3
• DOI: 10.1016/j.ijepes.2019.01.035
• Languages: English
• ISSNs: 0142-0615

Abstract

Highlights: Zero-sequence network voltage compensation strategy. Modular mulitlevel static synchronous compensator. Control algorithm for four-wire static synchronous compensator. Abstract: This paper presents a zero-sequence voltage compensation strategy for a three-phase four-wire modular multilevel static synchronous compensator used to regulate the network voltages. The control strategy is based on a synchronous reference frame mathematical modelling used to control the positive and zero-sequence voltages and currents of a MMC static synchronous compensator. The static compensator is controlled to synthesize AC currents in such a way to restore the positive-sequence voltage to its rated value and to mitigate the zero-sequence voltage at the point of common coupling. Digital simulations are presented to validate the static synchronous compensator mathematical analysis and to demonstrate the performance of the proposed control strategy.