TY - GEN
T1 - On Systematic DC Fault-Ride-Through of Multi-terminal MMC-HVDC Grids
AU - Niaki, Seyed Hassan Ashrafi
AU - Chen, Zhe
AU - Bak-Jensen, Birgitte
AU - Sharifabadi, Kamran
AU - Liu, Zhou
AU - Hu, Shuju
PY - 2021/9/30
Y1 - 2021/9/30
N2 - Development of Modular Multilevel Converter (MMC) based HVDC grids, as a new generation of Voltage Source Converter (VSC)-HVDC systems, has been considerable through the past decade. Emerging of multi-terminal MMC-HVDC networks makes integration of multiple large-scale sustainable sources and asynchronous power grids quite feasible. However, protection and control of the multi-terminal HVDC grids under fault situations have always been a vital issue. On the other hand, while modern AC grids get benefits of applied Fault-Ride-Through (FRT) operation and capabilities under AC fault conditions, the multi-terminal HVDC grids lack a systematic DC FRT operation. As the multi-terminal HVDC networks are going to become a backbone grid for the future power systems, it is necessary to define grid code requirements and standardizations considering DC FRT regulations. This paper presents potential DC FRT operations and possible profiles from HVDC grid point of view under DC fault conditions. A systematic DC FRT based on voltage against time profile is proposed. Different characteristics of voltage-based DC FRT are investigated in this study and results can be applicable to DC grid code definitions and requirements.
AB - Development of Modular Multilevel Converter (MMC) based HVDC grids, as a new generation of Voltage Source Converter (VSC)-HVDC systems, has been considerable through the past decade. Emerging of multi-terminal MMC-HVDC networks makes integration of multiple large-scale sustainable sources and asynchronous power grids quite feasible. However, protection and control of the multi-terminal HVDC grids under fault situations have always been a vital issue. On the other hand, while modern AC grids get benefits of applied Fault-Ride-Through (FRT) operation and capabilities under AC fault conditions, the multi-terminal HVDC grids lack a systematic DC FRT operation. As the multi-terminal HVDC networks are going to become a backbone grid for the future power systems, it is necessary to define grid code requirements and standardizations considering DC FRT regulations. This paper presents potential DC FRT operations and possible profiles from HVDC grid point of view under DC fault conditions. A systematic DC FRT based on voltage against time profile is proposed. Different characteristics of voltage-based DC FRT are investigated in this study and results can be applicable to DC grid code definitions and requirements.
KW - DC protection
KW - grid code requirement
KW - MMC-HVDC grids
KW - multi-terminal HVDC systems
KW - DC fault-ride-through (FRT)
KW - voltage source converter (VSC),
UR - http://www.scopus.com/inward/record.url?scp=85116625239&partnerID=8YFLogxK
U2 - 10.1109/UPEC50034.2021.9548154
DO - 10.1109/UPEC50034.2021.9548154
M3 - Article in proceeding
SN - 978-1-6654-4389-0
BT - 2021 56th International Universities Power Engineering Conference (UPEC)
PB - IEEE (Institute of Electrical and Electronics Engineers)
T2 - 2021 56th International Universities Power Engineering Conference (UPEC)
Y2 - 31 August 2021 through 3 September 2021
ER -