High-speed fault identification and protection for HVDC line using wavelet technique

Shang, Liqun; Herold, G.; Jaeger, Johann; Krebs, R.; Kumar, Arun

doi:10.1109/ptc.2001.964958

Cited by 58 publications

(23 citation statements)

References 3 publications

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“…(s) (6 ) It is observed that the compensation matrix is independent of the voltages and current and is related to frequency dependent parameters. The proposed technique can be written in two steps:…”

Section: Principle Of Proposed Techniquementioning

confidence: 99%

“…So, it is very necessary to find the location of the fault accurately and employing protective measures for clearance of the fault. Various methods are employed for the protection of HVDC transmission lines [3]- [7]. Travelling wave protection is used as a primary protection and is unable to detect the line faults with high transition resistance.…”

Section: Introductionmentioning

confidence: 99%

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Distance Protection of HVDC Transmission Line With Novel Fault Location Technique

Nale¹,

Babu

India³

2014

IJRET

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Section: Principle Of Proposed Techniquementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Distance Protection of HVDC Transmission Line With Novel Fault Location Technique

Nale¹,

Babu

India³

2014

IJRET

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“…where is the setting distance, is the propagation constant, and is the characteristic impedance, and are obtained by (4) where the line parameters are expressed in per-unit length and, in general, are frequency dependent; that is, , with in and in , and , with in and in . In practice, and can be assumed constant for the frequency range of power system studies.…”

Section: Proposed Protection Principlementioning

confidence: 99%

Distance Protection for HVDC Transmission Lines Considering Frequency-Dependent Parameters

Jiale

Zhang

Jiao

et al. 2013

IEEE Trans. Power Delivery

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For distance protection, the measurement accuracy at the boundary of protective zone is the most important issue to distinguish internal faults from external faults correctly. Since the line parameters depend strongly on the frequencies, in order to obtain high accuracy, it should be considered during initial fault transients generally associated with plentiful harmonics. In this paper, a distance protection method considering a frequency-dependent parameters is introduced into HVDC transmission lines. According to transmission-line equations, the frequency-dependent parameter model is separated into two parts: 1) distributed parameter model and 2) a compensation matrix related to frequency-dependent parameters, and the latter is approximated in the time domain with finite impulse response filters. So the voltage and current at the setting point are calculated accurately using local sampling data, and the fault distance is obtained by solving differential equations. The proposed algorithm is able to enhance the calculation accuracy of fault distance greatly at the remote-end faults. Furthermore, it is performed in the time domain and, thus, a short data window is sufficient for it to achieve satisfactory accuracy. Simulation results show that this method is valid and is capable of detecting the faults occurring on the protected line quickly and accurately.Index Terms-Distance protection, frequency-dependent parameters, finite impulse response (FIR) filter, HVDC transmission lines.

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“…One is the reflectometry technique [4,5], which measures the time interval between the first arriving surge and its subsequent reflection at one side of the transmission line. Due to no information is required from the remote terminal, communication link is not necessary between them.…”

Section: Introductionmentioning

confidence: 99%

HVDC transmission line fault localization base on RBF neural network with wavelet packet decomposition

Cui

2015

2015 12th International Conference on Service Systems and Service Management (ICSSSM)

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High voltage direct current (HVDC) transmission lines fault location is extremely important in repairing the fault line timely and reducing outage losses, so as to guarantee the reliability of power supply and to improve the stability of power system. Traveling wave, which is a kind of non-stationary signal with mutation, spreads along the line when HVDC transmission line fault happens. The feature of the traveling wave with mutation contains the fault time, fault location. By analyzing the traveling wave, accurate fault location can be derived. In this paper, an HVDC transmission line fault localization algorithm based on radial basis function (RBF) neural network with wavelet packet decomposition (WPD) is proposed. For the sake of simplicity, the proposed algorithm is shorted for WPD-RBF in the rest of this paper. By using WPD algorithm, the feature of the traveling wave can be extracted from the voltage and current signals. These features are then used as the training input sample of RBF neural network to mapping to the line fault location. Simulation result indicates that, line fault position can be accurately localized by the proposed algorithm. Keywords-HVDC; transmission line fault location; wavelet packet decomposition; RBF neural networkI.

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High-speed fault identification and protection for HVDC line using wavelet technique

Cited by 58 publications

References 3 publications

Distance Protection of HVDC Transmission Line With Novel Fault Location Technique

Distance Protection of HVDC Transmission Line With Novel Fault Location Technique

Distance Protection for HVDC Transmission Lines Considering Frequency-Dependent Parameters

HVDC transmission line fault localization base on RBF neural network with wavelet packet decomposition

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