What is the purpose of adjusting tap changers in PJM operations?

Adjusting tap changers in PJM operations plays a crucial role in improving voltage regulation. Voltage regulation refers to the ability to maintain a constant voltage level within the transmission system despite variations in load and generation. Tap changers are devices attached to transformers that allow for adjustments in the turns ratio, which in turn can modify the output voltage level.

When there are fluctuations in voltage due to changes in demand or generation, the tap changer can adjust accordingly to either increase or decrease the voltage being supplied to maintain stability and reliability in the grid. This helps ensure that the voltage levels remain within acceptable limits, preventing potential damage to electrical equipment and ensuring efficient operation across the grid.

Moreover, effective voltage regulation is essential for providing reliable electricity to consumers, maintaining the performance of electrical devices, and supporting overall system stability. Hence, the primary purpose of adjusting tap changers in PJM operations is directly aligned with the objective of improving voltage regulation in the transmission network.