Forecast System Inertia Condition and Its Impact to Integrate More Renewables

The system inertia is the inherent ability of the online synchronous machines to oppose sudden changes in generation or load. With increasing share of non-synchronous generation technologies (e.g., wind and solar generation) system inertia could decrease. One of the options to address system inertia decline is to increase frequency response reserves to achieve a satisfactory frequency control. This letter discusses a new prototype tool developed in Electric Reliability Council to forecast system inertia and to evaluate adequacy of frequency response reserves. The performance of this prototype tool is also evaluated.