Fault Transient Analysis of Flexible Medium Voltage DC Distribution
Xiao-ping Yang, Tian-hao Feng, Ning-bo Zhao
Available Online July 2019.
- https://doi.org/10.2991/eee-19.2019.15How to use a DOI?
- DC distribution, Fault transient analysis, Grounding fault, Supply reliability, Fault crossing
- The analysis of fault transient characteristics of flexible dc distribution is the basis of dc distribution protection technology. Based on the construction of the two-terminal power supply code flexible dc distribution system, the problems of different system grounding methods are analyzed in detail, and the connection of the converter transformer using Yn/△ and the dc capacitance using split midpoint high-resistance grounding method are proposed. Under this grounding method, transient models of transient grounding faults of ac and dc lines are established and their transient characteristics are studied. Using PSCAD/EMTDC software to build the simulation model, through the analysis and simulation proved that the system grounding method can effectively limit the instantaneity ground fault transient fault current during the period of over current levels, to maintain the dc voltage stability, improve power supply reliability of the system, has the strong ability of fault crossing ability and fault recovery.
- Open Access
- This is an open access article distributed under the CC BY-NC license.
Cite this article
TY - CONF AU - Xiao-ping Yang AU - Tian-hao Feng AU - Ning-bo Zhao PY - 2019/07 DA - 2019/07 TI - Fault Transient Analysis of Flexible Medium Voltage DC Distribution BT - 2nd International Conference on Electrical and Electronic Engineering (EEE 2019) PB - Atlantis Press SP - 85 EP - 89 SN - 2352-5401 UR - https://doi.org/10.2991/eee-19.2019.15 DO - https://doi.org/10.2991/eee-19.2019.15 ID - Yang2019/07 ER -