Title :
A new distance protection scheme which can operate during fast power swings
Author :
Mechraoui, A. ; Thomas, D.W.P.
Author_Institution :
Nottingham Univ., UK
Abstract :
The combined effects of a high impedance ground fault condition and a fast power swing condition cause the apparent impedance `seen´ by distance protection schemes to vary over a wide range. Previous research work has shown that detection and location of high impedance faults during power swings is very difficult. A new principle for high impedance fault detection during fast power swings is presented which also incorporates a scheme for one pole open fault detection. This method forms a part of a complete power swing relaying scheme and can be implemented on standard relaying hardware. Simulation results are presented for a typical 400 kV power system, using the Electromagnetic Transient Program (EMTP)
Keywords :
power system protection; 400 kV; EMTP; Electromagnetic Transient Program; computer simulation; distance protection scheme; fast power swings; fault detection; fault location; high impedance ground fault condition; power systems; relaying scheme;
Conference_Titel :
Developments in Power System Protection, Sixth International Conference on (Conf. Publ. No. 434)
Conference_Location :
Nottingham
Print_ISBN :
0-85296-672-5
DOI :
10.1049/cp:19970064