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Combination of Resistors

If the refere...

Question

If the reference bus is changed in two load flow runs with same system data and power obtained for reference bus taken as specified $P$ and $Q$ in the later run

A

the system losses will be unchanged but complex bus voltages will change.

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B

the system losses will change but complex bus voltages remain unchanged.

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C

the system losses as well as complex bus voltage will change.

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D

the system losses as well as complex bus voltage will be unchanged.

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Solution

The correct option is A the system losses will be unchanged but complex bus voltages will change.
The system losses are a function of system properties which are independent of choosing a type of bus where as the complex bus voltage is a function of parameters which are being calculated.

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