Abstract:
An increase in complexity of relays and power
systems makes the relay settings and the process of
coordination quite difficult. The changes of operating
conditions in power systems also adversely affect the
installed relays. There is a strong requirement to avoid
protection relay maloperation and to ensure continuing
optimal relay coordination and operation. It is rather
difficult to determine which of the protective relays will
operate as specified or whether the coordination of the relays
is maintained due to complexity of the system. This paper
introduces a reliable and secure interactive framework
system for investigation, calculation of relay settings and
relay coordination using wavelet based techniques. The
interactive system allows an engineer in the control room to
assign the location, the type of fault and the relay data set
pattern; then the operating time of the protective devices is
generated. The system framework introduces a dynamic,
interactive transient of the relay models for the power
system.
