Supplementary Impedance-Based Fault-Location Algorithm for Series-Compensated Lines

Bains, Tirath Pal S.; Zadeh, Mehdi Karbalaye

doi:10.1109/tpwrd.2015.2476341

Cited by 41 publications

(23 citation statements)

References 12 publications

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“…However, multi-circuit overhead lines are also utilized in Kuwait, India, China, and Malaysia. [3][4][5][6] Fault location is well studied for single-circuit [7][8][9][10][11][12][13][14][15][16] and double-circuit [17][18][19][20][21][22][23][24] series-compensated transmission lines (SCTLs) compared with multi-circuit SCTLs. In Saha et al, 7 one-terminal measurements in the phase domain are used to determine the fault location for single-circuit SCTL.…”

Section: Discussionmentioning

confidence: 99%

“…Equation 12 can be rewritten in the following formula as in 23 Imag where Imag (•) denotes the imaginary part of the argument, the superscript * denotes the complex conjugate, and i denotes circuits 1, 2, 3, and 4. By substituting Equation 14 into Equation 13 and eliminating the grounded resistance R g , the following equation is obtained:…”

Section: Two-terminal Four-circuit Untransposed Sctl Fault Locationmentioning

confidence: 99%

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A new fault location technique for four‐circuit series‐compensated transmission lines

Saber

2018

Int Trans Electr Energ Syst

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Summary This paper introduces a new fault location technique for two‐terminal four‐circuit series‐compensated untransposed transmission line utilizing synchronized phasor measurements. The proposed technique is formulated based on theory of transmission lines and Taylor series expansion of distributed parameter line model considering the mutual couplings between the parallel lines. The technique does not require the fault type and the equivalent impedance model of metal‐oxide varistor (MOV) and series capacitor. Firstly, two subroutines are derived to determine the true fault location assuming that the fault occurs on both sides of the series compensator (SC). After that, the true fault location is selected based on the fact that the equivalent impedance of the SC must have resistive and capacitive components. A 500‐kV system with four‐circuit series‐compensated line is simulated in DIgSILENT Power Factory software while the fault location calculations are implemented in MATLAB. The proposed technique is investigated under different fault resistances and locations as well as all fault types including inter‐circuit faults. In addition, the effect of complex fault impedance, variation of earth resistivity, synchrophasors errors, and errors in line parameters is checked. The simulation study assures the validation of the technique for all simulated fault cases.

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Section: Discussionmentioning

confidence: 99%

Section: Two-terminal Four-circuit Untransposed Sctl Fault Locationmentioning

confidence: 99%

A new fault location technique for four‐circuit series‐compensated transmission lines

Saber

2018

Int Trans Electr Energ Syst

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“…FL can be obtained using (6)- (9) for the fault in the right side of the compensator, where, d 2 = fault distance from the terminal A for the fault on the right side of the compensator. Two FLs 1 and 2 are calculated using (5) and (10) assuming the fault to be located on the left and right side of the compensator respectively.…”

Section: Fault On the Right Side Of The Series Compensatormentioning

confidence: 99%

Model Free Traveling Wave Based Fault Location Method for Series Compensated Transmission Line

Naidu¹,

Pradhan

2020

IEEE Access

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Locating fault position in a series compensated transmission line is a difficult task due to the non-linear characteristics of the metal-oxide varistor which is present in the protection system of the compensator. In this paper, a model-free two-terminal traveling wave-based fault location method for a series compensated line is proposed. The technique makes use of two subroutines which calculate the fault locations assuming that the fault position to be on the left and right side of the series compensator respectively. The method then selects the correct fault location of the two by a special logic based on faulted half-section identification. The first two traveling wave arrival times recorded at both the terminals of the line are used in the method. The proposed technique does not require model information of the series capacitor and transmission line. It has been verified using the PSCAD/EMTDC model of a 400-kV, 300 km transmission line which is compensated by a fixed series capacitor in the middle and line ends. The performance of the proposed method is compared with a commercially available classical two-ended techniques and setting-free method. INDEX TERMS Faulted half-section identification, series compensated lines, synchronized data, travelingwave-based fault locator This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.

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“…In Reference , a method has been developed for fault location by measuring PMU and using distributed line model parameters. Bains and Dadash Zadeh have proposed an algorithm for lines compensated by series capacitance using impedance method. This algorithm is activated using the fact that under fault condition, nonlinear metal oxide varistor (MOV) element is discarded from the fault loop and the section in which fault has occurred is not required to be known.…”

Section: Introductionmentioning

confidence: 99%

A novel fault location method for compensated transmission line including UPFC using one‐ended voltage and FDOST transform

Khoramabadi

Keshavarz

Dashti

2020

Int Trans Electr Energ Syst

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Summary Unified power flow controller (UPFC) flexible alternating current transmission system devices affect voltage and current signals at beginning of the feeder when a fault occurs. This indicates importance of fault location in compensated transmission lines. In the proposed method, only voltage signal of one terminal is employed. When a fault occurs, three‐fourth cycle of the voltage signal is received at one side and then the signal is divided into four separate partitions. Then, fast discrete orthonormal stockwell transform is applied to each partition to extract a feature vector. Using 10 first principle component analysis values of the feature vectors and Gaussian process regression, fault location is estimated. The proposed method is evaluated on a 500 kV transmission line of 300 km length with UPFC at different positions of the transmission line. Different conditions including fault inception angle, numerical references of UPFC and its operating modes, load existence, sampling frequency, and presence of noise are investigated. Numerical results under different conditions indicate high accuracy and efficiency of the proposed method.

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Supplementary Impedance-Based Fault-Location Algorithm for Series-Compensated Lines

Cited by 41 publications

References 12 publications

A new fault location technique for four‐circuit series‐compensated transmission lines

A new fault location technique for four‐circuit series‐compensated transmission lines

Model Free Traveling Wave Based Fault Location Method for Series Compensated Transmission Line

A novel fault location method for compensated transmission line including UPFC using one‐ended voltage and FDOST transform

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