Power swing protection of series compensated transmission line with novel fault detection technique

Abstract

Fault detection during power swing condition is a challenge for stable operation of power system due to several reasons. This paper proposes a negative-sequence current-based technique for detecting presence of fault, classification of fault occurred, estimated zone and location of the fault occurred and the fault inception time with respect to system reference clock during the power swing condition in a series compensated line. The technique is tested for different series -compensated power systems including a SMIB system and a WSCC-9bus-3machine power system with their different configurations and contingency combinations. Power swing caused by various faults are simulated with PSCAD / EMTDC and MATLAB/SIMULINK and compared with available techniques to prove the effectiveness of the proposed technique algorithm.

An Advanced Fault Locating Technique with WAMS based Backup Protection Scheme for Power System with Simultaneous Faults

“…A series capacitor with Metal Oxide Varistor creates problems to distance relaying based transmission-line protection. Typical problems associated with relays have been addressed in [9][10] which include several critical phenomena like voltage/current inversion, sub harmonic oscillations, and additional transients caused by the air-gap operation [19]. Performances of available WABP schemes [4][5][6][7][8] have not been evaluated for series-compensated lines and may find limitation for such lines.…”

Detection of fault during power swing in test system interconnected with DG

“…Unfortunately, the major drawback of this method has been identified as it could not work to detect symmetrical fault during power swing. In [8], the authors proposed a new fault detection technique based on negative sequence component of the current signal. However, the technique is only can be used for detecting fault in compensated lines [9].…”