Three single-phase two winding transformers, each rated 400 MVA, 13.8kV/199.2kV, leakage reactance of 0.10 pu are connected to form a three phase transformer bank. Winding resistance and exciting current are neglected. The high voltage windings are star connected. A three-phase load operated under balanced positive sequence conditions on the high voltage side absorbs 1000 MVA at 0.9pf lagging, a phase voltage of 199.2/0°kV. Determine the phase voltage at the low voltage bus if the low-voltage windings are also star connected
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.
Q1.
Three single-phase two winding transformers, each rated 400 MVA, 13.8kV/199.2kV, leakage reactance of 0.10 pu are connected to form a three phase transformer bank. Winding resistance and exciting current are neglected. The high voltage windings are star connected. A three-phase load operated under balanced positive sequence conditions on the high voltage side absorbs 1000 MVA at 0.9pf lagging, a phase voltage of 199.2/0°kV. Determine the phase voltage at the low voltage bus if the low-voltage windings are also star connected.
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