Results 221 to 230 of about 27,339 (259)
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Control of distance relay potential connections
Electrical Engineering, 1934By means of the automatic switching of potential connections to distance relays according to type of fault, each distance relay may be made to do the work of 2 or 3 such relays. The cost of distance relay installations may be reduced considerably by this automatic control of potential connections, and consequently their use should become more ...
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A Static Polyphase Distance Relay
IEEE Transactions on Power Apparatus and Systems, 1972The paper describes a Static Polyphase distance relaying scheme responding correctly to all Single line-to-ground faults and all doible-phase faults, with or without ground, by the phase-comparison of line-to-neutral compensated fault point voltages. It has been shown that if any two, out of the three, phase voltages at the fault point derived at the ...
D. Bhattacharya +3 more
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Evaluation of distance relay performance
Electrical Engineering, 1949POWER swings which result in lin large angles between voltages at the ends of a system and faults cause distance relays to measure impedances tedious to evaluate by mathematical computation. Also the slow clearing of a fault may cause a power swing, so that there will be a combination of swing and fault conditions to analyze.
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Performance evaluation of distance relay with CT saturation
Applied Soft Computing, 2011The decision of digital distance relay is very important for making the protection scheme in the transmission system more reliable. As the current signal is taken from the output of the current transformer, the distortion introduced by the saturation in it affects the performance of the distance relay.
Soumya R. Mohanty +4 more
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Static sampling distance relays
Proceedings of the Institution of Electrical Engineers, 1968A sampling technique has been developed which allows a comparison of instantaneous values derived at different instants of time, thereby dispensing with the need to phase-shift or mix signals derived from the primary line quantities. Both amplitude and phase comparisons are used to derive a variety of impedance characteristics.
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A comprehensive method of determining the performance of distance relays
Electrical Engineering, 1937This paper presents a comprehensive method of determining the performance of distance relays along the lines indicated above which may be summarized as follows: 1. A general method by which the performance of any of the types of distance elements in common use may be determined from the effective impedance presented to the element. 2. A tabulation from
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A Distance Relay With Adjustable Phase-Angle Discrimination
Transactions of the American Institute of Electrical Engineers, 1944DISTANCE-TYPE transmission-line relays have been used very successfully for a number of years. Several different distance-type characteristics have been available. Among these characteristics are the impedance relay which measures impedance substantially independent of the phase angle, the reactance relay which responds only to the reactive component ...
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Proceedings of the Institution of Electrical Engineers, 1974
M. Ramamoorty +3 more
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M. Ramamoorty +3 more
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Proceedings of the Institution of Electrical Engineers, 1973
Y.G. Paithankar, M.U. Deshpande
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Y.G. Paithankar, M.U. Deshpande
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