Fault location on a transmission line using high frequency travelling waves measured at a single line end

This paper presents a comprehensive survey on transmission and distribution fault location algorithms that utilize synchronized measurements. Algorithms based on two-end synchronized measurements and fault location algorithms on three-terminal and multiterminal lines are reviewed. Series capacitors equipped with metal oxide varistors (MOVs), when set on a transmission line, create certain problems for line fault locators and, therefore, fault location on series-compensated lines is discussed. The paper reports the work carried out on adaptive fault location algorithms aiming at achieving better fault location accuracy. Work associated with fault location on power system networks, although limited, is also summarized. Additionally, the nonstandard high-frequency-related fault location techniques based on wavelet transform are discussed. Finally, the paper highlights the area for future research.

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An Application of DWT and RBFNN for Fault Location for Single Line to Ground Fault on Hvac Transmission Line

Reason-A Technical Journal ◽

10.21843/reas/2015/45-54/108334 ◽

2016 ◽

Vol 14 (0) ◽

pp. 45

Author(s):

B. Saha ◽

B. Patel ◽

P. Bera

Keyword(s):

Transmission Line ◽

Fault Location ◽

Single Line ◽

Ground Fault

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Fault Model and Travelling Wave Matching Based Single Terminal Fault Location Algorithm for T-Connection Transmission Line: A Yunnan Power Grid Study

Energies ◽

10.3390/en13061506 ◽

2020 ◽

Vol 13 (6) ◽

pp. 1506

Author(s):

Hongchun Shu ◽

Yiming Han ◽

Ran Huang ◽

Yutao Tang ◽

Pulin Cao ◽

...

Keyword(s):

Transmission Line ◽

Computer Aided Design ◽

Fault Location ◽

Arrival Time ◽

Travelling Waves ◽

Complex Structure ◽

Measurement Data ◽

Travelling Wave ◽

Electromagnetic Transients ◽

Actual Measurement

Due to the complex structure of the T-connection transmission lines, it is extremely difficult to identify the reflected travelling wave from the fault point and that from the connection point by the measurement from only one terminal. According to the characteristics of the structure of the T-connection transmission line, the reflection of the travelling wave within the line after the failure of different sections in T-connection transmission line are analyzed. Based on the lattice diagram of the travelling wave, the sequence of travelling waves detected at the measuring terminal varies with the fault distance and the faulty section. Moreover, the sequence of travelling waves detected in one terminal is unique at each faulty section. This article calculates the arrival time of travelling waves of fault points at different locations in different sections to form the collection of the travelling wave arrival time sequence. Then the sequence of travelling waves of the new added fault waveforms is extracted to compare with the sequences in the collection for the faulty section identification and fault location. This proposed method can accurately locate the fault with different fault types, fault resistances and system impedances by only single-terminal fault data. Both Power Systems Computer Aided Design/ Electromagnetic Transients including DC (PSCAD/EMTDC) and actual measurement data are implemented to verify the effectiveness of this method.

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FAULT LOCATION ON A DISTRIBUTION FEEDER USING FAULT GENERATED HIGH FREQUENCY CURRENT SIGNATURES

ASEAN Journal on Science and Technology for Development ◽

10.29037/ajstd.242 ◽

2017 ◽

Vol 25 (2) ◽

pp. 191-203

Author(s):

Hashim Hizam ◽

P.A. Crossley

Keyword(s):

High Frequency ◽

Fault Location ◽

Cross Correlation ◽

Travelling Waves ◽

High Frequency Current ◽

Single Location ◽

Distribution Feeder ◽

The Cross ◽

Correlation Process ◽

Frequency Current

This paper describes how the fault generated travelling waves detected in the current signals at a single location on a distribution feeder can be used for fault location. The method identifies the fault section and the probable location of the fault by comparing the relative distance of each “peak” in the high frequency current signals to the known reflection points in the distribution feeder. The probable fault location is then used within a transient power system simulator that models the actual network. The resulting simulated current waveforms are then cross-correlated against the original signal. If the estimated fault location is correct, the high frequency signatures in the simulated waveform will be similar to those of the measured waveforms and the cross-correlation value will be a high positive value. If the signatures differ, the cross correlation value will be negative or small. The simulation and correlation process is repeated with the next “most likely” fault location until a high degree of correlation is obtained. Simulation studies using PSCAD/EMTDC and analysis using cross-correlation suggest that this method can accurately locate a fault on a distribution feeder using measurements at a single location.

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