A wavelet-based fault location technique for aged power cables

Din, El Sayed Tag El; Gilany, Mahmoud; Aziz, M.M. Abdel; Ibrahim, Doaa Khalil

doi:10.1109/pes.2005.1489163

Cited by 15 publications

(6 citation statements)

References 13 publications

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“…In the passive mode, the traveling wave surges created by the fault event and the corresponding reflection from the fault object are monitored and extracted in order to locate the fault. Applications of the passive type can be implemented using single-end measurement and also they are improved by using double-end measurements [4]- [6]. For discarding the propagation speed in functions of traveling wave fault location, the first arrival surges due to the fault are measured at three measuring points [3], [7].…”

Section: Introductionmentioning

confidence: 99%

Earth Fault Distance Estimation Using Active Traveling Waves in Energized-Compensated MV Networks

Elkalashy

Sabiha

Lehtonen

2015

IEEE Trans. Power Delivery

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In Nordic Countries, distribution networks are traditionally unearthed and increasingly compensated. For such networks, switching their neutral point to the earth is practically applied through a resistor for better selectivity functions of earth faults. In this paper, the neutral switching and consequently an arrival time of the aerial mode traveling wave reflected from the fault point are utilized to accurately determine the earth fault distance. A concept to create traveling waves is implemented by earthing the neutral via a controlled-thyristor that provides a short period of high fault current and produces traveling waves to estimate the fault distance. Much higher transient signals are generated by earthing through an opposite charged capacitor. A capacitor-resistor divider is utilized to measure the reflected surge over a heterogeneous distribution feeder. An adaptive setting is proposed for stamping the arrival surge. The results provide evidence of the efficacy of the proposed fault distance estimation. Index Terms-Unearthed and compensated MV networks, earth faults, fault distance estimation, traveling waves. 0885-8977 (c)

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Section: Introductionmentioning

confidence: 99%

Earth Fault Distance Estimation Using Active Traveling Waves in Energized-Compensated MV Networks

Elkalashy

Sabiha

Lehtonen

2015

IEEE Trans. Power Delivery

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“…Parameter‐less fault locators can locate the fault point without using the line parameters. Such concept has been applied for the traveling wave fault locators and also for the fundamental impedance‐based fault locators . In the traveling wave fault locator addressed in , the single‐end traveling wave and double‐end traveling wave principles have been combined in order to find the fault point disregarding the propagation speed.…”

Section: Introductionmentioning

confidence: 99%

“…Such concept has been applied for the traveling wave fault locators and also for the fundamental impedance‐based fault locators . In the traveling wave fault locator addressed in , the single‐end traveling wave and double‐end traveling wave principles have been combined in order to find the fault point disregarding the propagation speed. For the same purpose, the surge arrival time at an additional measuring node has been considered in where the traveling wave‐based fault location principles have been applied for the first arrival stamped times at three measuring nodes.…”

Section: Introductionmentioning

confidence: 99%

Simplified parameter-less fault locator using double-end synchronized data for overhead transmission lines

Elkalashy

2013

Int. Trans. Electr. Energ. Syst.

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SUMMARYIn this paper, a new double‐end fault locator is presented for transmission lines. The fault location is achieved using synchronized measurement data and applying the least error squares (LSQ) principles disregarding the line parameters. The LSQ is applied on the positive sequence equivalent circuit to locate the fault distance. The proposed algorithm is non‐iterative and simple as it is derived from the lumped parameter fault locator model. Due to using double‐end data, the algorithm provides promising performance against the fault resistance and untransposed transmission lines. Furthermore, as it is derived using the positive sequence network only, it is suitable for locating any fault type. When the algorithm is evaluated for long overhead transmission system, its accuracy is found acceptable up to 220 miles because of double‐end measurements. The ATP‐EMTP program is used to perform the fault cases and therefore evaluating the locator performance. The test results provide evidence the efficacy of the proposed algorithm. Copyright © 2013 John Wiley & Sons, Ltd.

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“…This algorithm is dependent to the line parameters. Algorithm presented in [9] proposes new method for accurate calculating of fault location in transmission lines using traveling wave theorem. Proposed method uses voltage and current samples which are taken from both ends of the line.…”

Section: Introductionmentioning

confidence: 99%

Considering characteristics of arc on travelling wave fault location algorithm for the transmission lines without using line parameters

Bashir

Niazy

Sadeh

et al. 2011

2011 10th International Conference on Environment and Electrical Engineering

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A realistic simulation of fault arc is required in proper design of transmission system equipment such as fault locators. Usually, in the travelling wave-based fault location algorithms, the effect of the arc of the fault is neglected. The influence of fault arc characteristics on the accuracy of fault locator which is based on the travelling wave theorem, is studied in this paper. Proposed algorithm uses samples taken from two terminals and shows that it is possible to calculate the accurate location of fault by measuring voltage transients caused by the fault. The travelling wave-based algorithm does not use the line parameters. Therefore, the accuracy of algorithm is not affected by aging, change of climate and temperature, which change wave speed. In addition, the effect of fault conditions such as arcing fault resistance, fault inception angle and fault distance are studied on the accuracy of the proposed algorithm. Simulations carried out by SimPowerSystem toolbox of MATLAB software confirm that mentioned parameters do not affect the accuracy of the method.

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A wavelet-based fault location technique for aged power cables

Cited by 15 publications

References 13 publications

Earth Fault Distance Estimation Using Active Traveling Waves in Energized-Compensated MV Networks

Earth Fault Distance Estimation Using Active Traveling Waves in Energized-Compensated MV Networks

Simplified parameter-less fault locator using double-end synchronized data for overhead transmission lines

Considering characteristics of arc on travelling wave fault location algorithm for the transmission lines without using line parameters

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