Chapter 29
Symmetrical and Unsymmetrical Faults
R-Lシリーズ回路トランジェント
Consider a series R-L circuit.
When the switch closes at a time equal to zero, it mimics a three-phase short circuit in an unloaded synchronous machine.
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三相短絡 - 無負荷同期機
A three-phase short circuit test on an unloaded synchronous machine is conducted to study its impact.
The AC fault current's oscillogram with its DC ...
電源システムの三相短絡
In fault current analysis, transformers are modeled using leakage reactances, while transmission lines are represented by equivalent series reactances.
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バスインピーダンスマトリックス
The calculation of subtransient fault currents for three-phase faults in an N-bus power system is modeled by the positive-sequence network. A three-phase ...
サーキットブレーカーとヒューズの選択
A circuit breaker interrupts fault currents by extinguishing the arc, which is elongated and cooled to stop the flow of electricity.
Breakers are ...
回転機械のシーケンスネットワーク
A Y-connected synchronous generator, grounded via neutral impedance, is designed to generate balanced internal phase voltages with only positive-sequence ...
ユニットごとのシーケンスモデル
An ideal Y-Y transformer grounded via neutral impedances has per-unit sequence networks similar to a single-phase transformer when balanced positive or ...
障害タイプ
Consider a single line-to-ground fault from phase a to ground at a three-phase bus, including a fault impedance. This impedance is zero for a bolted ...
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