Travelling-Wave Techniques Applied to the Protection of Teed Circuits:- Principle of Travelling-Wave Techniques

The use of fault initiated travelling-wave components in the protection of power lines can provide for faster relay operation. This paper describes the development of several new techniques based on the high frequency travelling-wave information contained in the post-fault voltage and current signals for the protection of teed circuits. The techniques developed have been incorporated in a generalised algorithm for application as a high speed direct-intertrip distance scheme.