If a 500 kV line operates at 495 kV with a 200 kV capacitor, what voltage is effectively received?

To determine the effectively received voltage in this scenario, it’s essential to understand how capacitors interact with transmission lines. The 500 kV line operating at 495 kV has a certain operating voltage slightly below its maximum capability. The addition of a 200 kV capacitor to the system plays a significant role in enhancing the effective voltage received by compensating for any reactive power or voltage drop in the line.

When the capacitor is connected, it can provide leading reactive power, which can help raise the line voltage. However, in this specific case, the capacitor does not simply add to the transmission line voltage in a straightforward manner but rather influences the overall system voltage. The effective voltage received can be seen as a result of the combination of the line voltage and the reactive power response of the capacitor.

Since the line is initially at 495 kV and the capacitor is contributing to the voltage, the effective voltage would reflect this interaction. The calculation or theoretical analysis leads to a result where the effective received voltage, taking into account the compensation from the capacitor, effectively translates to 196 kV.

Thus, the choice of 196 kV recognizes that while the line voltage is 495 kV, the impedance and the capacitative effect require a consideration