Open AccessFault analysis caused by short circuit current DC component Related to circuit breaker
Author(s) -
Tianbo Wu,
Yunkai Yue,
Diliyaer Duolikun,
wentao Chen
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 - 10.1088/1742-6596/2246/1/012054
Subject(s) - circuit breaker , arc fault circuit interrupter , electrical engineering , residual current device , waveform , disconnector , recloser , sulfur hexafluoride circuit breaker , engineering , power (physics) , fault (geology) , transient recovery voltage , dc bias , short circuit , voltage , constant power circuit , power factor , physics , quantum mechanics , seismology , geology
Concerning a 750kV power plant circuit breaker refused to move accident, combined with the action process of accident circuit breaker and the waveform of fault current, analyze the cause of the breakout of the circuit breaker. This paper described the process of the accident from four stages and analyzed the fault waveform in detail. The result shows that the circuit breaker in the DC converter station recloses when the current of circuit breaker in power plant reaches the maximum reverse. The recloses of the circuit breaker in the converter station causing the power plant of the circuit breaker to produce a larger DC component and the DC component caused the short-circuit current-zero offset of the circuit breaker in power plant and the breaker on the power plant side failed to open due to no zero crossing. The simulation result shows that the circuit breaker of power plant does not appear DC component while the reclosing time of the circuit breaker in the DC converter station ahead of 5ms. It verifies that the analysis results are correct.