Grid Code Compliant Modeling and Control of Modular Multilevel Converters during Unbalanced Faults

Richter M, Mehlmann G, Luther M (2019)

Publication Type: Conference contribution

Publication year: 2019

Publisher: Institute of Electrical and Electronics Engineers Inc.

Conference Proceedings Title: 2019 54th International Universities Power Engineering Conference, UPEC 2019 - Proceedings

Event location: Bucharest RO

ISBN: 9781728133492

DOI: 10.1109/UPEC.2019.8893570

Abstract

This paper presents necessary modeling and control enhancements for Modular Multilevel Converters (MMC) to provide Fault-Ride-Through capability and fast fault current injection as required by the new German Technical Connection Rules for HVDC. HVDC converters have to be able to detect and control the grid voltage and grid currents accurately during all fault conditions. That applies to the positive as well as negative sequence components, hence a Decoupled Double Synchronous Reference Frame - Phase-Locked-Loop (DDSRF-PLL) and Current Control (DDSRF-CC) are implemented. In addition, an enhanced current limitation and an extension of the horizontal balancing control are proposed to complement the control structure for safe operation.

Authors with CRIS profile

Michael Richter Lehrstuhl für Elektrische Energiesysteme Gert Mehlmann Lehrstuhl für Elektrische Energiesysteme Matthias Luther Lehrstuhl für Elektrische Energiesysteme

How to cite

APA:

Richter, M., Mehlmann, G., & Luther, M. (2019). Grid Code Compliant Modeling and Control of Modular Multilevel Converters during Unbalanced Faults. In 2019 54th International Universities Power Engineering Conference, UPEC 2019 - Proceedings. Bucharest, RO: Institute of Electrical and Electronics Engineers Inc..

MLA:

Richter, Michael, Gert Mehlmann, and Matthias Luther. "Grid Code Compliant Modeling and Control of Modular Multilevel Converters during Unbalanced Faults." Proceedings of the 54th International Universities Power Engineering Conference, UPEC 2019, Bucharest Institute of Electrical and Electronics Engineers Inc., 2019.

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