Measured impedance by distance relay for inter phase faults in presence of STATCOM

This paper presents the effects of STATic synchronous COMpensator (STATCOM), one of the shunt connected Flexible Alternating Current Transmission System (FACTS) devices, on the measured impedance at the relaying point in the case of the inter phase, phase to phase and three phase, faults. The measured impedance at the relaying point is affected by several factors, including the line pre-fault loading, the line structural conditions, and specially the fault resistance. In the presence of STATCOM, in addition to its amount of injected or absorbed reactive power, its installation point also affects the measured impedance. The variation of the measured impedance for different installation points and amounts of injected or absorbed reactive power would also be studied.

[1]  A. T. Johns,et al.  New approach to distance protection for resistive double-phase to earth faults using adaptive techniques , 1994 .

[2]  A. K. David,et al.  Adaptive relay setting for stand-alone digital distance protection , 1994 .

[3]  Ganapati Panda,et al.  Digital protection of power transmission lines in the presence of series connected FACTS devices , 2000, 2000 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.00CH37077).

[4]  Sadegh Jamali.  A fast adaptive digital distance protection , 2001 .

[5]  G. Joos,et al.  Operation of Impedance Protection Relays with the STATCOm , 2002, IEEE Power Engineering Review.

[6]  Zhang Zhizhe,et al.  An adaptive approach in digital distance protection , 1991 .

[7]  P. Ashmole,et al.  Flexible AC transmission systems , 1995 .

[8]  Zhang Zhizhe,et al.  An Adaptive Approach in Digital Distance Protection , 1991, IEEE Power Engineering Review.

[9]  Ganapati Panda,et al.  Adaptive relay setting for flexible AC transmission systems (FACTS) , 2000, 2000 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.00CH37077).