Detailed and Averaged Models for a 401-Level MMC-HVDC System

Voltage-source-converter (VSC) technologies present a bright opportunity in a variety of fields within the power system industry. New modular multilevel converters (MMCs) are expected to supersede two- and three-level VSC-based technologies for HVDC applications due to their recognized advantages in...

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Bibliographic Details
Published in:IEEE transactions on power delivery 2012-07, Vol.27 (3), p.1501-1508
Main Authors: Peralta, J., Saad, H., Dennetiere, S., Mahseredjian, J., Nguefeu, S.
Format: Article
Language:English
Subjects:
Applied sciences
Average-value model
Capacitors
Convertors
Delta modulation
Direct current networks
Electrical engineering. Electrical power engineering
Electrical machines
Electrical power engineering
electromagnetic-transients (EMT) programs
Exact sciences and technology
HVDC transmission
Miscellaneous
modular multilevel converter
Power conversion
Power electronics, power supplies
Power networks and lines
Power system dynamics
Switches
Voltage control
voltage-source converter (VSC)
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Summary:Voltage-source-converter (VSC) technologies present a bright opportunity in a variety of fields within the power system industry. New modular multilevel converters (MMCs) are expected to supersede two- and three-level VSC-based technologies for HVDC applications due to their recognized advantages in terms of scalability, performance, and efficiency. The computational burden introduced by detailed modeling of MMC-HVDC systems in electromagnetic-transients (EMT)-type programs complicates the study of transients especially when these systems are integrated into a large network. This paper presents a novel average-value model (AVM) for efficient and accurate representation of a detailed MMC-HVDC system. It also develops a detailed 401-level MMC-HVDC model for validating the AVM and studies the performance of both models when integrated into a large 400-kV transmission system in Europe. The results show that the AVM is significantly more efficient while maintaining its accuracy for the dynamic response of the overall system.
ISSN:0885-8977
1937-4208
DOI:10.1109/TPWRD.2012.2188911