What is the accuracy requirement for BA's frequency and ACE metering equipment?

The accuracy requirement for Balancing Authority (BA) frequency and ACE (Area Control Error) metering equipment is specified to be within 0.001Hz. This accuracy is critical for effective monitoring and management of grid operations, as precise frequency measurements are essential for maintaining system reliability and stability.

A frequency accuracy of 0.001Hz ensures that even small deviations can be detected and corrected to avoid impacts on the grid's performance. This level of precision helps in the analysis and management of power flow, frequency regulation, and ultimately aids in the prevention of outages or grid instability.

Choosing a less stringent accuracy requirement, such as 0.01Hz, 0.005Hz, or 0.0001Hz, may compromise the BA’s operational effectiveness and reliability in managing the balance between electricity supply and demand. Therefore, 0.001Hz is established as the necessary benchmark for ensuring operational integrity and reliability in monitoring and controlling the frequency and ACE within the power system.