Results 211 to 220 of about 19,321 (267)
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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
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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
IEEE Industry Applications Magazine, 2020
A novel Overcurrent (OC) protection methodology applied for flyback converters is proposed. This technique provides the advantage of immunity to input-voltage variation and inductance deviation from production-line manufacturing, making accurate OC available.
Ming-Tse Kuo +2 more
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A novel Overcurrent (OC) protection methodology applied for flyback converters is proposed. This technique provides the advantage of immunity to input-voltage variation and inductance deviation from production-line manufacturing, making accurate OC available.
Ming-Tse Kuo +2 more
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Trends in distribution overcurrent protection
Electrical Engineering, 1937The provision of suitable overcurrent protection for distribution systems at low cost is an important problem, for upon the satisfactory solution of that problem depends the continuity of service of a great many consumers of electric energy; consequently, the relations of a public utility company with its customers also depend upon adequate overcurrent
G. F. Lincks, P. E. Benner
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The Universal Overcurrent Relay
IEEE Industry Applications Magazine, 1996A 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
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Electric and Hybrid Vehicle Technology International, 2019
With the level of electrification in vehicles increasing, it is vital to ensure a high level of robustness in the fuses used in current and future electric and autonomous vehicles
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With the level of electrification in vehicles increasing, it is vital to ensure a high level of robustness in the fuses used in current and future electric and autonomous vehicles
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A Field-Programmable Time-Overcurrent Relay
IEEE Power Engineering Review, 1986This 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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Undervoltage/overcurrent coordination in Smart Grids
IECON 2012 - 38th Annual Conference on IEEE Industrial Electronics Society, 2012Smart Grid requires a high level of automation and coordination in order to reduce the intercommunications to reasonable economical and technical limits. Under-voltage/over-current coordination is one of the stringent requirements in order to meet such limits.
Juan C. Gómez, Medhat M. Morcos
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Conductor overcurrent protection
Conference Record of the 1991 IEEE Nuclear Science Symposium and Medical Imaging Conference, 2002The author examines the nature of overcurrents in an electrical circuit, their effects on the electrical components, the functional performance of common protective devices, and the proper selection of those overcurrent devices in order to achieve effective protection of the electrical system.
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An Improved Static Overcurrent Relay
IEEE Transactions on Power Apparatus and Systems, 1963This 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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