Simulation Study on Pole-to-Pole Short Circuit Faults of the Hybrid Multi-terminal DC Transmission System

2019 4th Asia Conference on Power and Electrical Engineering

能源学;电工学

Zheng, Mengyuan^1 ; Kang, Xiaoning^1 ; Liu, Le^1 ; Li, Xiaoyu^1

Shaanxi Key Laboratory of Smart Grid, Xi'An Jiao Tong University, Xi'an, China^1

关键词: Control strategies;    DC transmission systems;    Development directions;    Fault characteristics;    Multi-terminal direct currents;    Pole short circuits;    Protection principle;    Transmission projects;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/486/1/012089/pdf
DOI  :  10.1088/1757-899X/486/1/012089

来源: IOP

【 摘 要 】

The hybrid multi-terminal direct current (MTDC) system, with the economic superiority of LCCs and technical flexibility of VSCs, is one of the development directions of future DC transmission technology. This paper introduces the development of Hybrid-MTDC transmission projects as well as the related publications especially on fault control strategies. A ring hybrid three-terminal DC transmission system was built on PSCAD/EMTDC to simulate pole-to-pole short-circuit faults at different locations. The fault development process and fault characteristics on DC lines are analysed and summarized, which aims at providing the theoretical basis for the protection principles of hybrid MTDC systems.