Optimizing solution of fault location using single terminal quantities

Dong, Xiaowen; Shi, Shenxing; Cui, Tao; Lu, Qiang

doi:10.1007/s11431-008-0047-3

Cited by 15 publications

(4 citation statements)

References 9 publications

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“…Various methods have been proposed for FL in distribution systems. Generally, FL methods can be grouped into three main categories: (i) impedance-based methods [1][2][3][4][5][6][7]; (ii) travelling wave-based methods [8][9][10][11][12][13][14][15][16]; and (iii) methods based on neural networks [17,18]. Impedance-based methods estimate the fault distance by comparing apparent impedance with the pre-known line data.…”

Section: Introductionmentioning

confidence: 99%

Fault location on branched networks using mathematical morphology

Salehi

Namdari

2017

IET Generation, Transmission & Distribution

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Section: Introductionmentioning

confidence: 99%

Fault location on branched networks using mathematical morphology

Salehi

Namdari

2017

IET Generation, Transmission & Distribution

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“…The reliability of the conventional current differential relay could also be compromised because of current inversion . Travelling wave‐based protection schemes have some outstanding features such as immunity to power swings, current‐transformer saturation and long line capacitance . It usually requires a much higher sampling frequency than that of conventional digital relays and is also susceptible to electromagnetic interferences.…”

Section: Introductionmentioning

confidence: 99%

Real time digital simulator implementation of data-mining-based integrated impedance relay for compensated lines

Jena

Samantaray

2014

Int. Trans. Electr. Energ. Syst.

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Summary The paper presents integrated impedance‐based intelligent relaying for thyristor‐controlled series capacitor‐compensated transmission lines on Real Time Digital Simulator platform. Integrated impedance is defined as the ratio of sum of the voltage phasors across two ends of the transmission line to the sum of the current phasors through two ends of the same transmission line. The imaginary part of integrated impedance of the transmission line is used as input to a data‐mining model known as decision tree that determines whether the fault is within the protected zone or not. Critical issues such as power swing and fault during power swing are also included during validation of the relay on Real time digital simulator platform. The test results obtained indicate that the proposed integrated impedance‐based intelligent relaying is highly dependable and secure for protection of extra high voltage transmission lines including thyristor‐controlled series capacitor. Copyright © 2014 John Wiley & Sons, Ltd.

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“…A few principles for protection of a line with TCSC using artificial intelligence have been also proposed [14][15][16][17] but those may not be fast enough to protect the EHV/UHV transmission lines because of the complexity of the algorithm. Travelling wave (TW) based protection and fault location have some outstanding features such as immunity to power swings, CT saturation and long lines capacitance which make it more robust than traditional protection [18,19]. It usually requires high sampling frequency of about 1 MHz, which is more than the sampling rate of conventional digital relays.…”

Section: Introductionmentioning

confidence: 99%

Fault component integrated impedance-based pilot protection scheme for EHV/UHV transmission line with thyristor controlled series capacitor (TCSC) and controllable shunt reactor (CSR)

Jiale

Kang

et al. 2012

Sci. China Technol. Sci.

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This paper analyzes the fundamental frequency impedance characteristic of a thyristor controlled series capacitor (TCSC) and presents a novel transmission line pilot protection scheme based on fault component integrated impedance (FCII) calculated for a transmission line with TCSC and controllable shunt reactor (CSR). The FCII is defined as the ratio of the sum of the fault component voltage phasors of a transmission line with TCSC and CSR to the sum of the fault component current phasors where all the phasors are determined at both line's terminals. It can be used to distinguish internal faults occurring on the line from external ones. If the fault is an external one the FCII reflects the line's capacitive impedance and has large value. If the fault is an internal one on the line the FCII reflects the impedance of the equivalent system and the line and is relatively small. The new pilot protection scheme can be easily set and has the fault phase selection ability and also it is not affected by the capacitive current and the fault transition resistance. It is not sensitive to compensation level and dynamics of TCSC and CSR. The effectiveness of the new scheme is validated against data obtained in ATP simulations and Northwest China 750 kV Project. EHV/UHV, transmission line, pilot protection, fault component integrated impedance (FCII), thyristor controlled series capacitor (TCSC), controllable shunt reactor (CSR)Citation:He S E, Suonan J L, Kang X N, et al. Fault component integrated impedance-based pilot protection scheme for EHV/UHV transmission line with thyristor controlled series capacitor (TCSC) and controllable shunt reactor (CSR).

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Optimizing solution of fault location using single terminal quantities

Cited by 15 publications

References 9 publications

Fault location on branched networks using mathematical morphology

Fault location on branched networks using mathematical morphology

Real time digital simulator implementation of data-mining-based integrated impedance relay for compensated lines

Fault component integrated impedance-based pilot protection scheme for EHV/UHV transmission line with thyristor controlled series capacitor (TCSC) and controllable shunt reactor (CSR)

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