Meanwhile the synchronous generators at thermal plants can be kept idle and online to provide significant reactive power absorption capacity when not used to actively generate power.

The generator uses grid power to keep spinning, constantly providing leading or lagging Vars as needed. The clutch disengages the prime mover and the generator when reactive power is needed.

Synchronous condensers are AC synchronous rotating machines that produce the reactive power required to ensure reliable flow of electricity through AC power grids.

The reactive power needed for voltage control cannot travel long distances because it meets considerable resistance over the transmission lines.

Its objective is to leverage the machine’s reactive power control capabilities and synchronous inertia rather than converting electric to mechanical power or vice versa.

Find out how grid inertia from synchronous generators supports reliable electricity supply during sudden demand changes.

Siemens Energy will supply technology to Irish energy company Electricity Supply Board (ESB) to stabilise the grid at the Moneypoint coal power station, which is slated to be substituted by a 1.4GW ...