Fault location using digital relay data

Novosel, Damir; Hart, D.G.; Udren, Eric A.; Saha, M.M.

doi:10.1109/67.392027

Cited by 34 publications

(15 citation statements)

References 2 publications

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“…Therefore, the proposed method can be considered as a two-terminal-based fault-location algorithm. This means that the prefault load condition does not affect the fault-location accuracy of the proposed algorithm [18]. Therefore, it is not necessary to make any assumption, such as source impedance, source voltage, current distribution factor, etc., during the development of the proposed fault-location algorithm.…”

Section: B Fault-side Selectormentioning

confidence: 99%

Transmission Network Fault Location Observability With Minimal PMU Placement

Lien

Liu

et al. 2006

IEEE Trans. Power Delivery

129

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This paper presents a concept of fault-location observability and a new fault-location scheme for transmission networks based on synchronized phasor measurement units (PMUs). Using the proposed scheme, minimal PMUs are installed in existing power transmission networks so that the fault, if it occurs, can be located correctly in the network. The scheme combines the fault-location algorithm and the fault-side selector. Extensive simulation results verify the proposed scheme. Index Terms-Fault location, phasor measurement unit (PMU), transmission network.

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Section: B Fault-side Selectormentioning

confidence: 99%

Transmission Network Fault Location Observability With Minimal PMU Placement

Lien

Liu

et al. 2006

IEEE Trans. Power Delivery

129

View full text Add to dashboard Cite

show abstract

“…Many digital algorithms (Aggarwal et al, 1993;Eriksson et al, 1985;Girgis et al, 1992;Ibe and Cory, 1986;Kezunovic and Perunicic, 1994;Novosel et al, 1995;Novosel et al, 1996) have been presented to locate faults. A single-end, impedance-based fault location technique (Novosel et al, 1995) is very attractive because it is simple and does not require communications. The reactance method (Eriksson et al, 1985) works well when the fault does not involve significant fault resistance and load current.…”

Section: Introductionmentioning

confidence: 99%

“…The reactance method (Eriksson et al, 1985) works well when the fault does not involve significant fault resistance and load current. The accuracy of single-ended fault locators is affected by various assumptions that are made about the fault resistance, the source impedance, the remote in-feed current, and the line model, etc (Novosel et al, 1995).…”

Section: Introductionmentioning

confidence: 99%

Fast and accurate fault detection/location algorithms for double‐circuit/three‐terminal lines using phasor measurement units

Chen

Liu

2003

Journal of the Chinese Institute of Engineers

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This paper presents new PMU-based fault detection/location algorithms for double-circuit/three-terminal transmission lines. The development of the algorithms is based on distributed transmission line models and synchronized positive sequence voltage and current phasors. The proposed fault detector is very sensitive, such that it can quickly identify faults. In particular, high impedance faults can be easily detected. A fault direction discriminator is also developed to distinguish between internal and external faults with respect to the protected zone. When an internal fault occurs, the discriminator starts the process of fault locating. The methods do not require fault type identification and their computational costs are very low since they do not require iterative operations. Moreover, the algorithms provide excellent performance for transposed and untransposed lines. The EMTP/ATP simulator was used to verify the performance of the methods. The simulation studies show that the algorithms can detect faults quickly, discriminate fault direction correctly, and provide a high degree of accuracy in fault location. The algorithms are independent of various fault and system conditions such as fault types, fault positions, fault path resistance, pre-fault load flows, mutual coupling effect of lines, and line shunt capacitance.

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“…The more accuracy of fault location has been obtained the easier task for inspection, mainte nance, and repair of the line we can achieve. Rapid restoration of service could reduce customer complaints, outage time, loss of revenue, and crew repair expense [2,3].…”

Section: Introductionmentioning

confidence: 99%

Determination of optimal PMU placement for fault-location observability

Mazlumi

Abyaneh

Sadeghi

et al. 2008

2008 Third International Conference on Electric Utility Deregulation and Restructuring and Power Technologies

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This paper presents a new method to find minimum number of Phasor Measurement Units (PMUs), to determine the fault locations on transmission network lines in a power system. Considering the installation cost of PMUs, it is important to investigate the placement scheme of the PMUs at minimal locations on the network in the sense that the fault location observability can be achieved over the entire network. In this paper a new algorithm is introduced to find an optimization problem for determining the place and minimum number of PMUs in order to find accurate place of any fault in power systems. The accuracy of suggested algorithm is independent from the fault type and its resistance. Optimization problem is solved by branch and bond method. 41-bus 230kV Tehran Transmis sion Regional Electric Network is used as a real case study.

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Fault location using digital relay data

Cited by 34 publications

References 2 publications

Transmission Network Fault Location Observability With Minimal PMU Placement

Transmission Network Fault Location Observability With Minimal PMU Placement

Fast and accurate fault detection/location algorithms for double‐circuit/three‐terminal lines using phasor measurement units

Determination of optimal PMU placement for fault-location observability

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