Problem 4- Per unit computations Consider the one-line diagram of a three phase, 60 Hz power system shown in the figure below. The transformer nameplate values are 100 MVA, 23/115 kV and a reactance of 20%. The load at Bus 3 is very sensitive to voltage variations, and it is required to keep the voltage at 115 V. Using Bus three as the reference bus (angle is zero) find the voltages at Buses 1 and 2. S₂ Gen.) = 184.8 MW + j20 MVar V₁ Hot V₂ ZL=j66.1250 V3 = 115/0° S3 = j20MVar

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Three-Phase Transformers

Three-segment transformers are a type of transformer used to transform voltages of electrical systems into three ranges. Two type transformers are shell-type transformer and core type transformer. In brief, it could be described because of the exquisite kinds of configurations.

Transformer

Ever since electricity has been created, people have started using it in its entirety. We see many types of Transformers in the neighborhoods. Some are smaller in size and some are very large. They are used according to their requirements. Many of us have seen the electrical transformer but they do not know what work they are engaged in.