Journal ArticleDOI
A digital protection technique for parallel transmission lines using a single relay at each end
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TLDR
A novel digital relaying technique for parallel transmission lines is presented and the idea of the protection algorithm is based on the comparison of the average current of corresponding phases.Abstract:
A novel digital relaying technique for parallel transmission lines is presented. Only one relay at each end of the two lines is used. The idea of the protection algorithm is based on the comparison of the average current of corresponding phases. The technique is simple and avoids many problems of parallel lines. Simulation studies show that the trip signal is generated about 5 ms after the inception of the fault. The stability of the relay under different operating conditions is also examined. >read more
Citations
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Journal ArticleDOI
A New Adaptive PMU-Based Protection Scheme for Transposed/Untransposed Parallel Transmission Lines
TL;DR: In this article, a new adaptive phasor measurement unit (PMU) based protection scheme for both transposed and untransposed parallel transmission lines is proposed, which decouples the mutual coupling effects between parallel lines by means of eigenvalue/eigenvector theory.
Journal ArticleDOI
Protection of parallel transmission lines using wavelet transform
Ahmed Osman,Om P. Malik +1 more
TL;DR: In this article, a new scheme to enhance the solution of the problems associated with parallel transmission line protection is presented, which depends on the three line voltages and the six line currents of the two parallel lines at each end Fault detection, fault discrimination, and calculation of the measured signals are done by using wavelet transform (WT) by comparing the magnitudes of the estimated current phasors of the corresponding phases on both lines.
Journal ArticleDOI
An Adaptive Scheme for Parallel Line Distance Protection
TL;DR: In this paper, an adaptive relaying scheme for parallel-line distance protection is proposed, which adjusts its operation based on the availability of input signals to achieve an optimal distance protection performance on parallel transmission lines influenced by mutual coupling effect.
Journal ArticleDOI
High-Resistance Faults on Two Terminal Parallel Transmission Line: Analysis, Simulation Studies, and an Adaptive Distance Relaying Scheme
TL;DR: In this paper, an adaptive digital distance relaying scheme is proposed using radial basis function neural network which provides more efficient approach for training, computation, adaptation and tripping than the conventional feed forward network using back propagation algorithm.
Journal ArticleDOI
Statistical decision-tree based fault classification scheme for protection of power transmission lines
TL;DR: The proposed algorithm is based upon the wavelet transform of three phase currents measured at the sending end of a line and the Classification and Regression Tree (CART) method, a commonly available statistical method.
References
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Journal ArticleDOI
A New Alogorithm of an Accurate Fault Location for EHV/UHV Transmission Lines: Part I - Fourier Transformation Method
TL;DR: In this article, a fault location algorithm based on the Fourier analysis of a faulted network is presented, which embodies an accurate location by measuring only a local end data, and its fundamental theory is studied through digital computer simulations on a model power system.
Journal ArticleDOI
High-Speed Distance Relaying Using a Digital Computer I - System Description
TL;DR: An experimental general-purpose process-control digital computer system provides high-speed phase-and ground-distance fault protection of one 230 kV transmission line and an automatic oscillograph and diagnostic programs will allow a study of field performance.
Journal ArticleDOI
A New Computer Based Integrated Distance Relay For Parallel Transmission Lines
Arun G. Phadke,Lu Jihuang +1 more
TL;DR: This problem has been analyzed, and a new integrated relaying principle proposed which produces a secure decision to trip only the faulted phases in cases of complex simultaneous faults.
Journal ArticleDOI
Fault Surge Versus Switching Surge A Study of Transient Overvoltages Caused by Line-to-Ground Faults
E. W. Kimbark,Alvin C. Legate +1 more
TL;DR: In this paper, it was shown that the overvoltages caused by energization or reenergization of lines can be made so low that the limiting factor determining how much the line insulation may be reduced might become the over voltage produced by single line-to-ground faults.
Journal ArticleDOI
One-Cycle Fault Interruption at 500 kV: System Benefits and Breaker Design
TL;DR: In this paper, the need for ultra-rapid fault interruption was identified on the basis of improvements to generator stability and the power transmission capability of the BPA 500 kV system.
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