Research Article
Hybrid Single-Line-to-Ground Fault Arc Suppression Method in Distribution Networks
@INPROCEEDINGS{10.1007/978-3-031-31733-0_31, author={Qiong Liu and Wen Wang and Qinze Chen and Chaofeng Zhang and Xiao Ding}, title={Hybrid Single-Line-to-Ground Fault Arc Suppression Method in Distribution Networks}, proceedings={Smart Grid and Innovative Frontiers in Telecommunications. 7th EAI International Conference, SmartGIFT 2022, Changsha, China, December 10-12, 2022, Proceedings}, proceedings_a={SMARTGIFT}, year={2023}, month={5}, keywords={Distribution Network Single-phase-to-ground Fault Arc Suppression}, doi={10.1007/978-3-031-31733-0_31} }- Qiong Liu
Wen Wang
Qinze Chen
Chaofeng Zhang
Xiao Ding
Year: 2023
Hybrid Single-Line-to-Ground Fault Arc Suppression Method in Distribution Networks
SMARTGIFT
Springer
DOI: 10.1007/978-3-031-31733-0_31
Abstract
Existing voltage-type arc suppression method compensates fault current without considering line impedance. When metallic single line-to-ground (SLG) fault occurs, residual current of fault location rises instead of falling with conventional method, resulting in the failure of arc suppression. To solve this problem, combined current-type and voltage-type arc suppression method, a hybrid method is proposed in this paper. The distribution network is analyzed when considering line impedance and load. According to this, the current and voltage references for active arc suppression device (ASD) are derived for accurate arc suppression. The grounding resistance is estimated by zero-sequence current and voltage of the system. When it is larger than a setting threshold, voltage-type arc suppression method is adopted. Otherwise, current-type method is adopted. The proposed method can reduce fault current to almost zero. The correctness of the proposed method is validated and comparison is presented by simulation in the MATLAB/Simulink environment.
