Results 131 to 140 of about 35,817 (159)
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Microprocessor-based protective relays
IEEE Industry Applications Magazine, 2009This article describes the benefits of microprocessor (muP) relay performance and its capabilities beyond previous protective relaying technologies. This article also discusses a multiple quality-measurement approach to observing, measuring, and then calculating muP relay reliability and unavailability.
Richard Kirby, Ronald Schwartz
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Microprocessor-based busbar protection system
IEE Proceedings - Generation, Transmission and Distribution, 2000The design, implementation and testing of a microprocessor-based busbar protection system is presented. The proposed system employs a protection technique that uses the positive- and negative-sequence models of the power system. The system is composed of delta-impedance relays which implement a fault-detection algorithm, based on the developed ...
H.S. Gill, T.S. Sidhu, M.S. Sachdev
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Testing microprocessor-based numerical transformer differential protection
2015 IEEE Industry Applications Society Annual Meeting, 2015Transformer differential protection application has always been a challenge to protection engineers and commissioning personnel, even with older electromechanical and solid-state technologies. The emergence of microprocessor-based protection, where the intelligence is implemented numerically in software algorithms, and the fact that different relay ...
Quintin Verzosa, Wah A. Lee
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Microprocessor based HVDC converter protection
Proceedings of 1996 Canadian Conference on Electrical and Computer Engineering, 2002High voltage direct current (HVDC) power transmission systems complement the characteristics of existing AC power networks. One big advantage is the ability to control power between the sending and the receiving ends. This paper describes the development of a microprocessor-based dedicated protection unit for HVDC power converter protection from DC ...
S. Madan, K.E. Bollinger, S.K. Banerjee
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Lightning protection for microprocessor based electronic systems
Industrial Applications Society, 36th Annual Petroleum and Chemical Industry Conference, 1989The authors address the issues of lightning threats, suppressor components, and guidelines for selection and placement of protectors for microprocessor-based electronic systems. It is noted that more than 75% of all field failures of microprocessor-based electronic systems are caused by electrical overstress. The fundamental ingredients of an effective
O.M. Clark, R.E. Gavender
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Algorithm for microprocessor-based relay protection
2010 The 2nd International Conference on Industrial Mechatronics and Automation, 2010Generalizing modern microprocessor-based relay protection at the power transmission line, a design of relays based on ARM processor is put forward. This device used DSP made by TI to be the protective CPU, which mainly answered for controlling data acquisition, the sampled data processing, the protective function implementation, the human interface and
null Yang Tingfang, null Yang Xin
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Microprocessor-Based Universal Motor Protection System
IEEE Transactions on Industry Applications, 1981The design and development of' a universal controller for application to pipeline pumping motor control and protection is discussed. The work involved in the development of a prototype was presented in an earlier paper. Project activities, packaging, controller organization and programming for the development of a printed circuit version of the ...
Everett B. Turner, H. Michael Willey
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Transformer protection using microprocessor based relays
Proceedings of 1996 IAS Petroleum and Chemical Industry Technical Conference, 2002The integration of control and monitoring functions into microprocessor based protection relays continues to escalate as new relays are introduced. Adaptive relay algorithms are also being applied. This paper explores this trend regarding a multiprocessor-based transformer protection and management relay intended for use on all sizes of power ...
R. Beaulieu +4 more
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Microprocessor Implementation of Breaker-Fail Protection
IFAC Proceedings Volumes, 1980Abstract This paper describes the implementation of a digital technique for breaker-fail protection, using rate of rise of current at zero crossings as an indicator of current magnitude. Results obtained on a PDP 11/10 computer for single and multiple circuit breaker failure (with and without C.T. saturation) are given.
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Distribution Line Microprocessor Relay Protection System
2010 International Conference on Intelligent Computation Technology and Automation, 2010To enhance power supply reliability for the user terminals in the case of the distribution system to avoid interference by the fault again, rapidly complete the automatic identification, positioning, automatic fault isolation, network reconfiguration until the resumption of supply of non-fault section, a microprocessor-based relay protection device has
Gaohua Liao, Jiebin Zhu
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