Fault Analysis of VSC Single-pole Ground Fault in Flexible AC/DC Hybrid Distribution Network

2019 4th Asia Conference on Power and Electrical Engineering

能源学;电工学

Liu, Le^1 ; Kang, Xiaoning^1 ; Zheng, Mengyuan^1 ; Yuan, Yanlei^1

Shanxi Key Laboratory of Smart Grid, Xi'An Jiaotong University, Xi'an, China^1

关键词: Current situation;    Pole short circuits;    Protection device;    Protection methods;    Protection schemes;    Relay protection devices;    Stable operation;    Transient state;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/486/1/012093/pdf
DOI  :  10.1088/1757-899X/486/1/012093

来源: IOP

【 摘 要 】

The stable operation of the flexible AC-DC hybrid distribution network is inseparable from the configuration of the relay protection device, while the fault analysis and simulation research is the basis for the protection scheme selection. This paper introduces the current situation of fault analysis and protection research of flexible AC-DC Hybrid distribution network, and set up a model of radiated flexible AC-DC hybrid distribution network on PSCAD/EMTDC platform, then deeply analyzed the grounding fault of VSC single-pole short circuit of DC side. According to the simulation results, the trend and characteristics of the transient state after the fault are studied, which lays a foundation for the research of the subsequent relay protection method and the configuration of the protection device.