Detection of Transmission Line Faults in the Presence of Wind Energy Power Generation Source Using Stockwell’s Transform

Wind energy conversion system (WECS) is one of the significant electrical power generation sources that have been given focus in electrical industry in recent time. On integration of WECS units in distributed and transmission networks of utility grid, behaviour of system changes and these units impose different effects on system behaviour. One major effect of such plants is observed on protection distributed network. A Stockwell Transform based algorithm is proposed in this paper for recognition of power system faults with wind energy power generation source integrated to the network. Fault recognition issues are investigated with different faults on power system network. Voltage signals are recorded and decomposed with the help of Stockwell Transform based multi-resolution for recognition and discrimination of faults on power network. Faults like between line and ground (LG), between two phases (LL), between two phases and ground (LLG) and between all phases and ground (LLLG) are investigated. Results are evaluated in MATLAB/Simulink.