What do converter stations do to alter electrical currents?

Converter stations play a crucial role in power transmission by altering electrical currents for efficient long-distance transmission. The primary function of these stations is to convert alternating current (A/C) into direct current (D/C) and also to invert direct current back into alternating current when necessary.

When electrical energy is transmitted over long distances, using D/C is often more efficient, as it reduces losses associated with lower transmission resistance and reduces the amount of energy that can be lost through heat. This makes A/C to D/C conversion a vital process in high-voltage direct current (HVDC) systems. Conversely, when the D/C needs to be converted back to A/C for distribution to homes and businesses where standard appliances and systems operate on A/C, the inverter functionality comes into play.

Understanding the operation of converter stations in conjunction with power systems is key for lineman apprentices, as it involves both the technological aspects and the practical implications of electricity transmission and distribution.