Abstract
This work is devoted to the development of an automated transfer switch (ATS) for the 6/0.4 kV substation. The work is relevant due to the introduction of automation and the replacement of electromechanical equipment with microprocessor devices in the power systems. At the lower (field) level, automation is driven by the use of programmable logic controllers (PLCs) and various smart sensors. The possibility of using modular PLC in automation systems is considered. Developed are an algorithm and a program for the implementation of automated regulation of the application of automatic transfer switches at a substation using the recommendations of the IEC 61131.3 “Programming languages of programmable logic controllers” standard.
Highlights
To ensure an uninterrupted operation of the power system, one should connect current collectors of the first and second reliability categories to two or more independent power supply sources
The main task of the automatic transfer switches (ATS) system is to control the voltage of the supply inputs and the load current and to switch the consumer to the backup power line
The programmable logic controllers (PLCs) from different manufacturers offered on the market were analyzed
Summary
To ensure an uninterrupted operation of the power system, one should connect current collectors of the first and second reliability categories to two or more independent power supply sources. To switch loads between the main and standby sources, automatic transfer switches (ATS) are used [1,2]. The main task of the ATS system is to control the voltage of the supply inputs and the load current and to switch the consumer to the backup power line. For its application in various enterprises, one should develop a specific circuitry and/or logical solution at the site of installation. It is becoming even more in demand due to the development of automation systems and the possibility of complicating the logic of their construction
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