14-11-2014, 10:26 AM
Abstracts: In this project four different sources viz. mains (state supply), alternator, DC supply (using inverter) and solar are used. The main objective of this project is to provide uninterrupted power supply to a load whose shutdown can cost very high. Thus, an alternative arrangement for power source is must require. In this project, constant monitoring of the power sources takes place. In the absence of the source the next prioritized power supply, on the basis of economy, will turn on. Priority of power source is formulated as follows - Solar, Mains (State supply), Alternator and lastly is dc supply (name of battery used with rating battery). Due to failure of supply the relay connected to it will give signal to PLC then PLC will see the healthy sources available and will switch on the supply having higher priority and maintains incessant supply to the load. The source supplying power to the load is displayed on HMI screen.