What type of generation is primarily used to support VAR absorption?

The primary type of generation used to support VAR absorption is static VAR generators. These devices are critical in maintaining voltage stability within power systems. Static VAR generators, often known as STATCOMs (Static Synchronous Compensators), provide reactive power support and can absorb excess reactive power when there is a need to stabilize voltage levels in the grid. This is particularly important during periods of high demand or when there are variations in generation that can lead to voltage fluctuations.

By injecting or absorbing reactive power, static VAR generators help to ensure that the voltage remains within acceptable limits, thus improving the reliability and efficiency of the power system. Additionally, they can respond quickly to changing power conditions, making them highly effective for dynamic VAR support.

In contrast, fast start generation typically refers to generation resources that can rapidly come online to meet a sudden increase in demand, but they do not primarily focus on VAR support. Inductive generators are more related to generating reactive power rather than absorbing it, and lagging generators generally do not provide the fast and flexible VAR support that static VAR generators offer.

Thus, static VAR generators are the most suitable and effective option for VAR absorption, ensuring that the grid operates smoothly and efficiently.