then Since a2=a* The sequence quantities can be expressed in terms of the phase quantities by finding the inverse of the matrix as follows: For a balanced three phase system, The above equations apply to voltages also. Sequence representations of power system elements: ELEMENT SYMBOL POSITIVE SEQ NEGATIVE SEQ GENERATOR/SOURCE LINE TRANSFORMER Fault Calculations: Using the station power one line diagram presented earlier as shown below, and the associated per unit diagram, calculate the three phase fault and the phase to ground fault at points A,B,C,D,E,F. Figure 8 Station Power Example One Line Diagram
Since a2=a* then The sequence quantities can be expressed in terms of the phase quantities by finding the inverse of the matrix as follows: For a balanced three phase system, The above equations apply to voltages also. Sequence representations of power system elements: ELEMENT SYMBOL POSITIVE SEQ NEGATIVE SEQ GENERATOR/SOURCE LINE TRANSFORMER Fault Calculations: Using the station power one line diagram presented earlier as shown below, and the associated per unit diagram, calculate the three phase fault and the phase to ground fault at points A,B,C,D,E,F. Figure 8 Station Power Example One Line Diagram
Fault_Calc_Annex_Not_incorp_yet.docx