Question

For a synchronous generator connected to an infinite bus through a transmission line, how are the change of voltage $\left(\Delta V\right)$ and the change of frequency $\left(\Delta f\right)$ related to the active power (P) and the reactive power (Q)?

• A. $\left(\Delta V\right)$ is proportional to P and $\left(\Delta f\right)$ to Q.
• B. $\left(\Delta V\right)$ is proportional to Q and $\left(\Delta f\right)$ to P.
• C. Both $\left(\Delta V\right)$ and $\left(\Delta f\right)$ are proportional to P.
• D. Both $\left(\Delta V\right)$ and $\left(\Delta f\right)$ are proportional to Q.

Answer 1

The correct option is B $\left(\Delta V\right)$ is proportional to Q and $\left(\Delta f\right)$ to P.

$\left(\Delta V\right)$ is proportional to Q and $\left(\Delta f\right)$ to P.