Authors : Ismail Abduljabar Hasan, Hassaan Th. H. Thabet and Maysara A. Qasim
Abstract: In most of the developing countries, like Iraq, electrical power fails frequently which is a considerable problem facing these countries. The stand-alone generator sets have become in the forefront of the backup aid to maintain the availability of electricity for residential areas under the situation of sudden electrical power shutdown, fluctuation and failure. In Iraq, the stand-alone power generating sets (250-400 kVA) are known as Zone Generators (ZG) which supplies electricity to a limited area (Zone) of 40-60 houses in case of the National Establishment of Electricity (NEE) absence. Private Generator (PG) which is a small mobile generator (1-4 kW) is used to supply electricity to a single house in emergency cases (when both NEE and ZG are absent), this type of generators is operated manually by the owner. This study tries to establish a humble automated solution for supplying a load (residential) with electricity from three sources, the first one is the NEE, the second is the ZG in case of NEE absence and the third source is the PG when both NEE and ZG are absent. A Programmable Logic Controller (PLC) is used to control an Automatic Transfer System (ATS) to supply the load with the available source. This automated system protects the load from over voltage and under voltage hazards which may occur during the operation, it also monitors the availability of the three phases of the main source (NEE).
Ismail Abduljabar Hasan, Hassaan Th. H. Thabet and Maysara A. Qasim, 2019. Automatic Control of Power Transfer System using PLC Techniques. Journal of Engineering and Applied Sciences, 14: 6791-6799.