New concept in fault location for overhead distribution systems using superimposed components

Elimination of multiple estimation for fault location in radial power systems by using fundamental single-end measurements

“…Better results could be obtained if more elaborated methods as these proposed in [4], [12]- [15], among others, are used. The main problem of the proposed concept applied in more elaborated fault location methods is related to the deduction of the equation sets.…”

“…4, (10) and (11) are obtained in the case of phase-to-phase faults (10) (11) From the first two rows of (10), the fault distance is obtained as it is presented in (12) as (12) where constants , and are given by (13)…”

“…5, the equations obtained are the same as the ones presented in the case of double-phase to ground faults (these are not influenced by ). As a result, (12) to (14) are used in case of phase-to-phase faults.…”

Fault Locating, Prediction and Protection (FLPPS)

“…The following methods for fault location based on the high-frequency approach seem more promising: "New concept in fault location for overhead distribution systems using superimposed components [23]" presents a novel approach in single-ended fault location for overhead distribution systems based on the concept of superimposed voltages and currents. The superimposed values are simply the differences between the total fault and pre-fault steady-state voltage/current signals.…”

High impedance fault location in 11kV underground distribution systems using wavelet transforms

“…In [19][20][21][22], voltage sags pattern was employed to evaluate the fault location. The impedance-based technique have been used in [23][24][25][26][27]. Also, there are few intelligent techniques such as expert system [28,29], genetic algorithm [30], artificial neural network [31,32], and fuzzy system [33][34][35] have been utilized to locate the fault during a low impedance fault.…”