Application of PLC in the Automatic Switching System for a Power Supply System
Wei Ri-xiang
Abstract
Wei Ri-xiang
Abstract
This paper briefly describes the origins of PLC,basic composition,working theory and the traditional relay is compared with PLC control systems.Finally,an ABB-AC31 PLC which is applied to the control loop is introduced and replaces the relay control circuit so as to achieve the automatic switch for the power supply to diesel generator sets of parallel power supply.It shows the PLC is new application in the field of transmission and distribution.
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This paper briefly describes the origins of PLC,basic composition,working theory and the traditional relay is compared with PLC control systems.Finally,an ABB-AC31 PLC which is applied to the control loop is introduced and replaces the relay control circuit so as to achieve the automatic switch for the power supply to diesel generator sets of parallel power supply.It shows the PLC is new application in the field of transmission and distribution.
Key concepts: Relay, Engineering, Diesel generator, Power (physics), Generator (circuit theory), Power transmission, Control (management), Control engineering