Digital distance relay with improved characteristics against distorted transient waveforms

Ohura, Y.; Matsuda, Takayuki; Suzuki, Mamoru; Yamaura, M.; Kurosawa, Y.; Yokoyama, Tsugio

doi:10.1109/61.35627

Cited by 19 publications

(3 citation statements)

References 5 publications

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“…Fault voltage waveform distortion have been recognized in urban network systems where a mixture of overhead lines and underground cables exist [27], [28]. These distortions increase the difficulty of accurately estimating the fundamental frequency component.…”

Section: B Simulation Setup -Ieee 34-bus Systemmentioning

confidence: 99%

Application of Matrix pencil method in sub-cycle voltage dip classification

Chia

Khambadkone

2013

2013 IEEE Energy Conversion Congress and Exposition

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Matrix Pencil Method (MPM) has been applied to sub-cycle information of space vector and zero-sequence voltage to classify voltage dip phenomena. The feature extraction performance of MPM using different sampling window width has been statistically analyzed and found to perform relatively well between 0.1 and 1 cycle of a damped complex sinusoidal signal. The results show that MPM is able to estimate the fundamental frequency space vector even in highly distorted signals. The space vector ellipse's estimation is further enhanced by augmenting an ellipse fitting algorithm to MPM. This enhanced method differentiated between two highly similar two-phase voltage dips using only a quarter-cycle of data, demonstrating the feasibility of this scheme. This is demonstrated in a fault simulation on IEEE 34-bus system using a 5 ms sampling window.

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Section: B Simulation Setup -Ieee 34-bus Systemmentioning

confidence: 99%

Application of Matrix pencil method in sub-cycle voltage dip classification

Chia

Khambadkone

2013

2013 IEEE Energy Conversion Congress and Exposition

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“…In the past k x was commonly used for k r due to hardware restrictions. It has since become possible to calculate the distance to faults by solving equations directly following the introduction of numerical platforms [1] [2]. Henceforth it has not been difficult to calculate distance using the full complex value with a modern numerical relay.…”

Section: A Zero Sequence Compensation For Reactance Element and Blindermentioning

confidence: 99%

Problems associated with zero sequence compensation applied to distance protection

Kase

Kurosawa²,

Beaumont³

2006

2006 IEEE Power Engineering Society General Meeting

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Zero sequence compensation is one of the essential functions found within distance protection and is widely used all over the world. However, the application of this function can be problematic as it can cause complex and subtle effects. Often investigations into problems found with zero sequence compensation have not clarified whether or not a problem would have caused unwanted operation under very severe conditions. In this paper the undesirable effect of zero sequence compensation on the measurement of resistance and on the performance of Mho elements is investigated and described. These undesirable effects are explained using vector diagrams and equations in order that a general tendency of the effect can be understood. The explanation is confirmed by simulation using ATP. Finally, the problems are summarised and possible solutions are suggested.

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“…The combination of recursive low pass filter algorithm and distance protection algorithm using solution of differential equation is commonly used. Normally, the higher-frequency components during the fault transient can be eliminated by anti-aliasing analog filter of the protection, but it is difficult to eliminate the low frequency components close to fundamental frequency by the analog filter and digital filter within a permitted time delay, though the differential equation approach is always true under transient condition, the high-accuracy measurement against transient waveforms can not be achieved because of the inferior differential approximation of di/dt using periodical data samples [2], the affection of low frequency harmonics close to fundamental frequency on the convergence of the calculation of the inductance L in differential equation may result in that under some criteria conditions, the protection may maltrip for reverse fault and refuse tripping for intemal forward fault, and the protection may overreach trip for remote end extemal fault as a result of the harmonic influence.…”

Section: The Predicted Influence On Digital Protectionsmentioning

confidence: 99%

Suggestions on the protections in AC system in the near vicinity of the HVDC installation

Wu¹,

Yufeng²

POWERCON '98. 1998 International Conference on Power System Technology. Proceedings (Cat. No.98EX151)

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According to the features of the HVDC transmission system, this paper presents the possible influence of harmonic and disturbance in HVDC system on the line protection and converter transformer protection on the basis of analyzing on the protection principle, algorithm and digital filter method of the widely used digital protection, on the basis of the EMTDC calculation on the model of k500kV HVDC system , additionally with the dynamic simulation test examples, finally propeses the suggestions on the protections which will be used in theaicinity of the converter stations.

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Digital distance relay with improved characteristics against distorted transient waveforms

Cited by 19 publications

References 5 publications

Application of Matrix pencil method in sub-cycle voltage dip classification

Application of Matrix pencil method in sub-cycle voltage dip classification

Problems associated with zero sequence compensation applied to distance protection

Suggestions on the protections in AC system in the near vicinity of the HVDC installation

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