Results 121 to 130 of about 489 (178)

Transmission line fault detection and classification using bi-orthogonal wavelet transform (5.5) based signal decomposition. [PDF]

Sci Rep
Chothani N, Sheikh M, Patel D, Singh S, Varshney D, Chan CK, Sonawane C, Bongale A.   +7 more
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Transmission line faults detection and classification using new tripping characteristics based on statistical coherence for current measurements. [PDF]

Sci Rep
Mahmoud RA.
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Enhancing HVDC transmission line fault detection using disjoint bagging and bayesian optimization with artificial neural networks and scientometric insights. [PDF]

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Yousaf MZ, Singh AR, Khalid S, Bajaj M, Kumar BH, Zaitsev I.   +5 more
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Microcontroller based overcurrent relay and directional overcurrent relay with ground fault protection

Electric Power Systems Research, 1996
Abstract This paper presents the design and construction of overcurrent and directional overcurrent relays with ground fault protection for the protection of three-phase subtransmission and distribution systems, using a 16-bit microprocessor, the Intel 8096BH. The relay obtains the system currents at the rate of 12 samples per cycle and estimates the
A C Liew
exaly   +2 more sources

The Universal Overcurrent Relay

IEEE Industry Applications Magazine, 1996
A comprehensive list of nondirectional overcurrent relays would include thermal overload, inverse-time, definite time, and instantaneous relays. The list could be further classified by operating quantities including individual phase, residual, and negative-sequence current.
E. O. Schweitzer, S. E. Zocholl
openaire   +1 more source

A Field-Programmable Time-Overcurrent Relay

IEEE Power Engineering Review, 1986
This paper presents the underlying principles and the test results for a microprocessor based time overcurrent relay. The main feature is the use of a portable pocket computer with an RS-232C communication link for the man machine interface. The calculator serves to enter and modify the set vatues pick up current, instantaneous characteristics.
Gabriel Bienmouval, Sylvain Boismenu
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An Improved Static Overcurrent Relay

IEEE Transactions on Power Apparatus and Systems, 1963
This paper describes the design and application of a new static overcurrent protective relay system. Design goals and physical characteristics are given. Basis for selection of the new time current characteristics is presented, and new curves are compared with existing shapes. Also given are application examples involving fuse coordination, low-voltage
D. Dalasta, F. Free, A. De Snoo
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Overcurrent relay on a FPGA chip

Microelectronics Reliability, 1995
Abstract A new hardware approach for implementing overcurrent relays is presented in this paper. An overcurrent relay is implemented on a field programmable gate array (FPGA) chip (Xilinx's XC3020-50-PC84C). The hardware design of the overcurrent relay is based on a three-stage pipelined architecture.
Mahmoud A. Manzoul, Prasad Modali
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Instantaneous Overcurrent Relays for Distance Relaying

Transactions of the American Institute of Electrical Engineers, 1935
Instantaneous isolation of faults on transmission and distribution lines is ever a problem of the relay engineer. The use of instantaneous overcurrent relays as applied to the system of the Oklahoma Gas and Electric Company is discussed in this paper. Relays of this type were applied in conjunction with already installed overcurrent time delay relays ...
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Modeling overcurrent relay characteristics

IEEE Computer Applications in Power, 1992
An approach to computer modeling of the time-current characteristics of protective devices that relies on interactive manipulation and fitting of the curves, which are modeled mathematically as splines is presented. The approach is much easier to use than the commonly used curve-fitting methods, which are reviewed, and it does not require a digitizer ...
S. Chan, R. Maurer
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