Results 11 to 20 of about 3,767 (209)

Tests of microprocessor-based relay protection devices: Problems and solutions [PDF]

open access: yesSerbian Journal of Electrical Engineering, 2009
Usually, the operational condition of relay protection devices is checked with specific settings used for the relay operation in a certain network point.
Gurevich Vladimir
doaj   +2 more sources

Protection of HV and MV lines in electric power distribution Kruševac with special emphasis on microprocessor relay protection [PDF]

open access: yesBakar
The aim of the paper is to present the method of implementing and using relay protection with a special emphasis on microprocessor relay protection in Electric power distribution Kruševac, and based on the presented concrete examples of settings and ...
Marković Nenad   +3 more
doaj   +2 more sources

Orthogonal Components Forming of the Microprocessor-Based Protection Input Signals

open access: yesИзвестия высших учебных заведений и энергетических объединенний СНГ: Энергетика, 2020
The use of orthogonal components (OS) is the main direction of determining information parameters in microprocessor relay protection and automation of electric power systems.
F. A. Romaniuk   +3 more
doaj   +3 more sources

Reliability of microprocessor-based relay protection devices: Myths and reality [PDF]

open access: yesSerbian Journal of Electrical Engineering, 2009
The article examines four basic theses about the ostensibly extremely high reliability of microprocessor-based relay protection (MP) touted by supporters of MP. Through detailed analysis based on many references it is shown that the basis of these theses
Gurevich Vladimir
doaj   +2 more sources

MICROPROCESSOR-BASED PROTECTION DEVICE ELECTRIC MOTORS AGAINST SHORT CIRCUIT CURRENTS

open access: yesNauka ta progres transportu, 2010
The microprocessor device of protection of electric chains of electric motors from short circuit currents, in which switching-off of a short circuit current is carried out before it achieves a shock value, is presented.
D. V. Ustymenko
doaj   +3 more sources

Investigation of Microprocessor-based Current Protection of Distribution Networks Lines

open access: yesИзвестия высших учебных заведений и энергетических объединенний СНГ: Энергетика, 2011
As a result of computing experiment the basic indices of the technical perfection of microprocessor current protection of distribution networks lines were obtained. Test data are presented in the form of signal dependences in various protection circuits.
F. A. Romaniuk, E. V. Buloichyk
doaj   +2 more sources

PRINCIPLES FOR EXECUTION OF ADAPTIVE MICROPROCESSOR CURRENT PROTECTION AGAINST INTER-PHASE SHORT-CIRCUITS

open access: yesИзвестия высших учебных заведений и энергетических объединенний СНГ: Энергетика, 2005
The problem pertaining to maintenance of current protection sensitivity against inter-phase short-circuits is considered in the paper. The paper proposes a principle for execution of adaptive microprocessor current protection that makes it possible to ...
F. A. Romaniuk   +2 more
doaj   +1 more source

IMPROVEMENT OF ALGORITHM FOR FORMATION OF ORTHOGONAL COMPONENTS OF INPUT VALUES IN MICROPROCESSOR RELAY PROTECTION OF POWER LINES IN DISTRIBUTION NETWORKS

open access: yesИзвестия высших учебных заведений и энергетических объединенний СНГ: Энергетика, 2014
The paper considers a new algorithm for formation of orthogonal components of input values in microprocessor relay protection of power lines in distribution networks.
F. A. Romaniuk, M. A. Shevaldin
doaj   +2 more sources

Receipt of Input Signal Amplitudes in Microprocessor Protection of Electrical Installations

open access: yesИзвестия высших учебных заведений и энергетических объединенний СНГ: Энергетика, 2006
Frequency-independent methods for receipt of input signal amplitudes in microprocessor protection of an electrical installation in the aggregate with earlier analyzed digital filters are considered in the paper.
F. A. Romaniuk, A. V. Kovalevsky
doaj   +1 more source

Microprocessor Protection Relay Based on Amplitude-Phase Measurements of Signals [PDF]

open access: yes, 2022
Microprocessor-based relay protection devices enable efficient operation of the electrical infrastructure of high voltage power lines and substations under emergency conditions. This is achieved by using high-speed fault detection algorithms and advanced
JDANOV, Vladimir, SESTACOVA, Tatiana
core   +1 more source

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