A simple approach to analysis of faulted power systems

✍ Scribed by M.H. Nehrir

• Publisher: Elsevier Science
• Year: 1981
• Tongue: English
• Weight: 297 KB
• Volume: 4
• Category: Article
• ISSN: 0378-7796
• DOI: 10.1016/0378-7796(81)90013-4

✦ Synopsis

In this paper the common approach for analysis of symmetrical faults and the linear circuit theory are used to analyse the unbalanced disturbances in a power network. The positive, negative and zero sequence impedance data of the faulted power system are fed separately to the program developed for analysis of symmetrical (three-phase) faults and the node voltages corresponding to each sequence impedance data are obtained. These sequence node voltages are then corrected to yield the correct sequence node voltages by multiplying them by the actual 'impedance ratios' obtained from the orientation of the sequence network for the particular type of fault considered. Numerical examples are presented to support the developed theory.