Double Line to Ground Fault

Double Line to Ground Fault (LLG): Figure 11.9 shows a Double Line to Ground Fault at F in a power system. The fault may in general have an impedance Zf…

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Effects of Short Circuit Faults on Power System

Effects of Short Circuit Faults on Power System: Depending upon power circuit voltage and configuration, method of neutral connection, presence of regulating devices and the speed of disconnection of the…

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Overcurrent Earth Fault Protection

Overcurrent Earth Fault Protection: Overcurrent Earth Fault Protection - Earth-fault protection can be provided with normal overcurrent relays, if the minimum earth-fault current is sufficient in magnitude. The magnitude of…

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Important Questions of Unsymmetrical Fault

Important Questions of Unsymmetrical Fault: 1. What is a 3-Φ unsymmetrical fault ? Discuss the different types of unsymmetrical faults that can occur on a 3-Φ system. 2. Discuss the…

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Unsymmetrical Fault Analysis Articles

Unsymmetrical Fault Analysis Articles: Bus Impedance Matrix Method : Bus Impedance Matrix Method for Analysis of Unsymmetrical Shunt Faults: Bus Impedance Matrix Method of fault analysis, given for symmetrical faults…

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Balanced Earth Fault Protection

Balanced Earth Fault Protection: In small-size alternators, the neutral ends of the three-phase windings are often connected internally to a single terminal. Therefore, it is not possible to use Merz-Price…

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Analysis of Unsymmetrical Faults

Analysis of Unsymmetrical Faults: In the Analysis of Unsymmetrical Faults, the following assumptions will be made : The generated e.m.f. system is of positive sequence only. No current flows in…

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