Fault location estimator for series compensated transmission line under power oscillation conditions

Deng, Yujia; He, Zhengyou; Lin, Senshang; Fu, Ling

doi:10.1049/iet-gtd.2015.1017

Cited by 9 publications

(6 citation statements)

References 39 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%

“…The dimensions of V F , I F , and R F are, respectively, 12 × 1, 12 × 1, and 12 × 12. As the fault impedance is purely resistive, the imaginary part of fault impedance is equal to zero, and Equation is rewritten as follow:

Imag ({}, R_{F}) = Imag ({}, V_{F} \times I_{F}^{*}) = 0 .

Equation can be rewritten in the following formula as in

Imag ({}, \sum_{normali = 1}^{normali = 4} ([], ((), V_{normalF, ai} - R_{g} ΣI) I_{normalF, ai}^{*} + ((), V_{normalF, bi} - R_{g} ΣI) I_{normalF, bi}^{*} + ((), V_{normalF, ci} - R_{g} ΣI) I_{normalF, ci}^{*})) = 0

ΣI = \sum_{normali = 1}^{normali = 4} ((), I_{normalF, ai} + I_{normalF, bi} + I_{normalF, ci})

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 into Equation and eliminating the grounded resistance R g , the following equation is obtained:

Imag ({}, \sum_{normali = 1}^{normali = 4} ([], V_{normalF, ai} I_{normalF}))

…”

Section: Proposed Techniquementioning

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%

“…The two techniques assumed that the faults occurring on overhead lines are purely resistive. In Deng et al, two‐terminal synchronized measurements are employed to locate the faults on a double‐circuit SCTL under power oscillation conditions. However, this technique does not consider the MOV as part of the SC.…”

Section: Introductionmentioning

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%

Imag ({}, R_{F}) = Imag ({}, V_{F} \times I_{F}^{*}) = 0 .

Equation can be rewritten in the following formula as in

Imag ({}, \sum_{normali = 1}^{normali = 4} ([], ((), V_{normalF, ai} - R_{g} ΣI) I_{normalF, ai}^{*} + ((), V_{normalF, bi} - R_{g} ΣI) I_{normalF, bi}^{*} + ((), V_{normalF, ci} - R_{g} ΣI) I_{normalF, ci}^{*})) = 0

ΣI = \sum_{normali = 1}^{normali = 4} ((), I_{normalF, ai} + I_{normalF, bi} + I_{normalF, ci})

Imag ({}, \sum_{normali = 1}^{normali = 4} ([], V_{normalF, ai} I_{normalF}))

…”

Section: Proposed Techniquementioning

confidence: 99%

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

confidence: 99%

Section: Introductionmentioning

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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“…The method creates the post-fault incidence and primitive admittance matrices through (15) and ( 16). This allows the assembly of the bus admittance matrix as in (17), used by the 19) and (20).…”

Section: Post-fault Proceduresmentioning

confidence: 99%

Optimization-Based Fault Location Algorithm for Series-Compensated Power Transmission Lines

Santo¹,

Albertini²,

Tiferes³

2022

IEEE Access

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This paper presents an optimization-based fault location algorithm applicable to seriescompensated power transmission lines. The presented method determines the fault location minimizing the errors between measured and calculated post-fault voltage and current phasors through a dynamic differential evolutionary optimization algorithm. This fault location solution may be advantageous over existing approaches found in the literature as it can locate any fault regardless of the series compensation's design, impedance, and positioning. To validate the proposed algorithm, the authors tested it against more than a thousand and six hundred faults on a 500 [kV] series-compensated double-circuit transmission line simulated in ATP/EMTP. The results indicate that the presented method yields accurate fault location estimates, with errors within the 1% magnitude using post-fault steady-state and transient data. In addition, the proposed algorithm is robust even in situations featuring high-resistance faults, errors in the line's parameters, in the system equivalents connected to and between the line's terminals, and in phasor extraction, configuring it as an accurate and reliable alternative to locate faults within series-compensated lines.

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Fault diagnosis in series compensated power transmission lines

Shafiullah¹,

Abido²,

Al-Mohammed³

2022

Power System Fault Diagnosis

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Fault location estimator for series compensated transmission line under power oscillation conditions

Cited by 9 publications

References 39 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

Optimization-Based Fault Location Algorithm for Series-Compensated Power Transmission Lines

Fault diagnosis in series compensated power transmission lines

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