What is the fast scan rate for ACE and regulation megawatt values?

The fast scan rate for Area Control Error (ACE) and regulation megawatt values is set at 2 seconds. This means that data regarding ACE and regulation will be updated and transmitted every two seconds. This rapid refresh rate is essential for maintaining the reliability and stability of the power grid, as it allows operators to respond quickly to changes in demand and supply conditions. Accurate and frequent monitoring of these values enables effective control actions to support the balance between generation and load, which is critical in managing the flow of electricity and ensuring the overall stability of the system. A longer scan rate would lead to delayed responses, which could potentially impact grid reliability.