advantages and disadvantages of automatic load sharing of transformers
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Disadvantages of automatic transformer distribution and load sharing system
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Automatic Transformer distribution and load sharingsystemAbstract :
Power travels from the power plant to house through anamazing system called the power distribution grid. for the power to beuse full in a home or business, it comes off the transmission grid and isstepped-down to the distribution grid. this may happen in several phases.The place where the conversion from “transmission” to “distribution”occurs is in a power substation. It has transformers that step transmissionvoltages down to distribution voltages. It has a “bus” that can split thedistribution power off in multiple directions. It often has a circuit breakersand switches so that the substation can be disconnected from thetransmission grid or separate distribution line can be disconnected fromthe substation when necessary.In this project a slave transformer in this case of shares load of master transformer over load and over temperature. A sensor circuit is designedto log the data from the master transformer and if it is found to be in over load condition immediately the slave transformer will be connected in parallel to the master transformer and load is shared.LM324 operational amplifier is used to compare the load of thetransformer with a standard load capacity. An n-p-n transistor is used todrive the relay.This project regulated 5V, 750ma power supply .7805 three terminalvoltage regulation. Bridge type full rectifier is used to rectify the ac outputof secondary 230/12V step down transformer.
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