Agafonov Nikita Andreevich, Student, Penza State University (40 Krasnaya street, Penza, Russia), E-mail: firstname.lastname@example.org
Agafonov Anatoliy Ivanovich, Candidate of engineering sciences, associate professor, sub-department of power and electrical engineering, Penza State University (40 Krasnaya street, Penza, Russia), E-mail: email@example.com
Brostilova Tat'yana Yur'evna, Candidate of engineering sciences, associate professor, sub-department of power and electrical engineering, Penza State University (40 Krasnaya street, Penza, Russia), E-mail: firstname.lastname@example.org
Kil'dyushkin Kirill Olegovich, Student, Penza State University (40 Krasnaya street, Penza, Russia), E-mail: email@example.com
Background. The relevance of the work lies in the development of a system of automation, control, and protection in electric power systems (PS) by replacing the outdated element base on electro-mechanical relays with a modern microprocessor element base. The aim of the work is to provide reliable high-quality power supply to consumers by creating a digital control system, automation and protection of the PS on a microprocessor element base.
Materials and methods. The features of the design of relay protection and automation (RPA) on microprocessor devices for PS are considered. A comparative analysis of the structural schemes of RPA devices on Electromechanical and microprocessor element bases is carried out, the following are presented: the principle of operation of Rza devices taking into account the structural parts required for them (measuring, logic, control parts of the operational current source); the problem of lower noise immunity of digital Rza devices as a result of a significant decrease in the threshold of sensitivity of digital Rza circuits to the level of interference in the PS.
Results and conclusions. All this requires the development of complex technical means in terms of low-voltage power supplies, uninterruptible power supplies of increased reliability and noise immunity, grounding and shielding systems, taking into account the provision of increased electromagnetic compatibility. All the proposed solutions to improve the noise immunity and reliability of modern RPA on microprocessor devices provide reliable and high-quality power supply in accordance with the requirements of GOST 13109, as well as cheap and reliable power supply to consumers through more efficient management. The RPA subsystem on microprocessor devices, taking into account the existing automatic dispatching control system and automatic subsystem of control and accounting of electricity, ensure reliable operation of the PS.
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