Analysis of modular multilevel converters with DC short circuit fault blocking capability in bipolar HVDC transmission systems

2015 ◽  
Author(s):  
Alireza Nami ◽  
Jiaqi Liang ◽  
Frans Dijkhuizen ◽  
Peter Lundberg
Keyword(s):  
Short Circuit ◽  
Transmission Systems ◽  
Multilevel Converters ◽  
Hvdc Transmission ◽  
Modular Multilevel Converters ◽  
Short Circuit Fault

Design, Control and Application of Modular Multilevel Converters for HVDC Transmission Systems

2016 ◽  
Author(s):  
Kamran Sharifabadi ◽  
Lennart Harnefors ◽  
Hans-Peter Nee ◽  
Staffan Norrga ◽  
Remus Teodorescu
Keyword(s):  
Transmission Systems ◽  
Multilevel Converters ◽  
Hvdc Transmission ◽  
Modular Multilevel Converters

Simulation of Transients for VSC-HVDC Transmission Systems Based on Modular Multilevel Converters

2014 ◽  
pp. 317-359 ◽  
Author(s):  
Hani Saad ◽  
Sébastien Dennetière ◽  
Jean Mahseredjian ◽  
Tarek Ould-Bachir ◽  
Jean-Pierre David
Keyword(s):  
Transmission Systems ◽  
Multilevel Converters ◽  
Hvdc Transmission ◽  
Modular Multilevel Converters

Research on fault clearing scheme for half-bridge modular multilevel converters high voltage DC based on overhead transmission lines

2020 ◽  
Vol 22 (1) ◽  
pp. 61-72
Author(s):  
Jingru Zhang ◽  
Baina He ◽  
Xingmin He ◽  
Yanchen Dong ◽  
Renzhuo Jiang
Keyword(s):  
High Voltage ◽  
Transmission Lines ◽  
Short Circuit ◽  
Short Circuit Current ◽  
Circuit Breakers ◽  
Multilevel Converters ◽  
Modular Multilevel Converters ◽  
Clearing Time ◽  
The Impact ◽  
Short Circuit Fault

Abstract When a short-circuit fault occurs on the transmission lines of high voltage DC transmission system based on modular multilevel converters, the fault cannot be cleared by adjusting the converter control system, which results in longer recovery time. Aiming at the problem above, a fault self-clearing scheme based on the fault clearing module for the half-bridge converter station is proposed. Combined with the actual operating status of the flexible DC transmission project, centralized parameter models are utilized to analyze the fault self-clearing mechanism. Besides, the impact of the discharge branch on the fault clearing effect is studied in depth to provide a design consideration for the fault clearing module and improve the comprehensive benefits of the proposed scheme. PSCAD/EMTDC simulation results show that the introduction of the fault clearing module in the half-bridge converter station can effectively suppress the fault short-circuit current and shorten the fault clearing time. In addition, circuit breakers on both sides of the line do not need to be tripped, providing a reliable guarantee for the subsequent adaptive restart process.

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