Results 271 to 280 of about 40,872 (307)
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Signals Passing Through Asymmetric Faults in Transmission Lines
IEEE Sensors Journal, 2021Unexpected results have been seen in multiple papers involving spread spectrum time domain reflectometry (SSTDR) measurements on twin lead cables with one line containing a fault. A small portion of the signal is able to transmit past the fault, reflect off the end of the cable, return back through the fault, and be recorded by the SSTDR.
Hunter D. Ellis +4 more
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Testing Comparison and Delay Faults of TCAMs With Asymmetric Cells
IEEE Transactions on Very Large Scale Integration (VLSI) Systems, 2010Ternary content addressable memory (TCAM) is one key component in high-performance networking applications. An asymmetric TCAM cell consists of a binary content addressable memory (BCAM) bit and a mask bit. In this paper, we analyze comparison faults of the asymmetric TCAM cell based on BCAM comparison faults.
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Fault-tolerant scheduling for asymmetric communications
5th European Personal Mobile Communications Conference 2003, 2003A fault-tolerant scheduling system is presented for data broadcasting in asymmetric communication environments for obtaining high communication efficiency for the clients of mobile computing. The coding method that plays a key role in implementing this system is analysed.
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Diagnosability of system faults with propagation under asymmetric invalidation
Microprocessing and Microprogramming, 1988Abstract We proposed in [1] considering the influence of fault propagation on the diagnosability of an interconnected system. In addition to the parameter t of the number of faulty units, a parameter k was introduced of the number of components consisting of faulty units, so as to capture the effect of fault propagation.
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Control of transformerless MMC-HVDC during asymmetric grid faults
IECON 2013 - 39th Annual Conference of the IEEE Industrial Electronics Society, 2013Modular multilevel converter (MMC) is the latest converter topology suitable for the transformerless applications in HVDC transmission. HVDC systems are required to remain connected during grid faults, provide grid support and completely decouple the healthy side from the faulty one.
Artjoms Timofejevs +4 more
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Accurate Calculation of Asymmetrical Fault Currents in Complex Power Systems
IEEE Power Engineering Review, 1981This paper describes an efficient method for accurate calculation of system asymmetrical short circuit currents for both balanced and unbalanced faults. The method uses a Fourier transform technique to calculate the unidirectional component of the short circuit current and a transient stability program to compute the alternating component. The proposed
A.S. Morched, G.A. Tench, P. Kundur
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Testing and Diagnosing Comparison Faults of TCAMs with Asymmetric Cells
IEEE Transactions on Computers, 2012Ternary content addressable memory (TCAM) is a key component in various digital systems due to its fast lookup operation. Symmetric and asymmetric TCAM cells are two widely used cells for implementing a TCAM array. This paper presents several comparison fault models of TCAMs with asymmetric cells based on electrical defects.
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A New Digital Relay for Generator Protection against Asymmetrical Faults
IEEE Power Engineering Review, 2001Under unbalanced conditions the three phase instantaneous power oscillates at twice the power system frequency. The magnitude of these oscillations can be used as a measure of the system unbalance. This article has introduced a new digital relaying algorithm designed to detect asymmetrical faults by monitoring the sinusoidal oscillations of the three ...
O. Usta, M. Bayrak, M.A. Redfern
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Symmetrical and asymmetrical fault currents
2004In the previous chapter, we saw how to calculate the symmetrical fault current. This is important from the RMS heating point of view, but for distribution switchgear engineers, the asymmetrical current is of much greater importance for a number of reasons that will be discussed in this chapter.
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Masking asymmetric line faults using semi-distance codes
[1988] The Eighteenth International Symposium on Fault-Tolerant Computing. Digest of Papers, 2003The authors propose a masking method for asymmetric line faults in LSIs using semidistance codes, which are a class of nonlinear codes. Faults caused by open or short circuit defects in line areas of LSIs can be made asymmetric by controlling the bus driver and the bus terminal gates. The conditions required for codes to mask these faults are clarified,
Kazumitsu MATSUZAWA, Eiji FUJIWARA
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