## Zero Sequence Impedance of Transmission Line

Zero Sequence Impedance of Transmission Line: Zero Sequence Impedance of Transmission Line - A fully transposed three-phase line is completely symmetrical and therefore the per phase impedance offered by it…

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## Negative Phase Sequence Relay

Negative Phase Sequence Relay: A negative phase sequence relay (or phase unbalance) is essentially provided for the protection of generators and motors against unbalanced loading that may arise due to…

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## Unbalanced Rotor Impedance Operation

Unbalanced Rotor Impedance Operation: Earlier Unbalanced Rotor Impedance Operation were employed for starting and speed control. They are not in use any more. However, a loose contact in the rotor…

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## Sequence Networks Unsymmetrical Faults

Sequence Networks Unsymmetrical Faults: The analysis of an unsymmetrical fault by symmetrical components method can be conveniently done by drawing sequence networks. A Sequence Networks Unsymmetrical Faults of a particular…

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## Sequence Impedance of Power System

Sequence Impedance of Power System: Each element of power system will offer impedance to different phase sequence components of current which may not be the same. For example, the impedance…

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## Bus Impedance Matrix Method for Analysis of Unsymmetrical Shunt Faults

Bus Impedance Matrix Method for Analysis of Unsymmetrical Shunt Faults: Bus Impedance Matrix Method of fault analysis, given for symmetrical faults Â can be easily extended to the case of unsymmetrical…

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## Construction of Sequence Network in Power System

Construction of Sequence Network in Power System: Before sections the Sequence Network of various Power System elements synchronous machines, transformers and lines have been given. Using these, the Construction of…

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## Sequence Impedance and Networks of Transformers

Sequence Impedance and Networks of Transformers: It is well known that almost all present day installations have three-phase transformers since they entail lower initial cost, have smaller space requireÂ­ments and…

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