Open AccessStudy on the influence of typical faults in AC area on DC voltage
Author(s) -
Hongwei Ren,
Huiqing Lv
Publication year - 2022
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2237/1/012007
Subject(s) - ground , transformer , capacitor , voltage , electrical engineering , fault (geology) , computer science , mode (computer interface) , topology (electrical circuits) , engineering , operating system , seismology , geology
By summarizing the architecture and operation control of the existing models, this paper establishes a typical DC power distribution structure model, and studies the wiring mode and working principle of the converter. For the DC distribution network under VSC pseudo bipolar operation mode, when considering the grounding mode, we focus on the neutral point of the connection transformer on the AC side, the filter neutral point on the AC side and the capacitor neutral point on the DC side. The causes and recovery process of DC positive and negative unbalanced voltage are analyzed. Begin in the asymmetric fault in the AC area, the paper proposes the cause and recovery process theory of unbalanced voltage of capacitors on DC side, the paper also analyzed the fault characteristics in AC area, and proposes the suitable grounding mode.