An effective fault location technique for transmission grids using phasor measurement units

This paper presents an effective fault location technique for transmission grids based on phasor measurement units (PMUs). High accuracy in fault location is achieved by using both the fault observability with PMUs placement and an accurate distributed parameter line model for the transmission lines. The work performed in this paper is provided with high performance which is simplicity, sensitivity, stability and featuring robustness to the uncertainties in fault inception angle, load current and fault path resistance, and the accuracy and reliability of the calculation for the technique is very high. This paper illustrates the characteristics of the proposed algorithm and evaluates its performance by using transient fault data obtained from PSCAD/EMTDC simulations.

► High accuracy in fault location is achieved partly by using the fault observability with PMUs placement.
► High accuracy in fault location is achieved partly by using an accurate distributed parameter line model.
► The work is provided with high performance which is simplicity, sensitivity and stability.
► The technique is robustness to the uncertainties in fault inception angle, load current and fault path resistance.
► The accuracy and reliability of the calculation for the technique is very high.