An Analysis of Storage Requirements and Benefits of Short-Term Forecasting for PV Ramp Rate Mitigation

As renewable energy penetration on the grid increases, requirements are being placed PV owners and operators to limit power ramp rates. ramping is an issue for stability because generation load balance must be continually met. When a large resource significantly increases or decreases, another compensate. To aid in stability, rate limitations have been imposed plants. This article addresses how much fast-responding storage needed mitigate high rates of plants, benefit there from short-term forecasting terms reducing requirement. The results provide baseline estimate system planners designers. Furthermore, controller design optimization given, along with open-source code, such that others can tailor simulation their specific plant weather profile. Results studying 100 MW production profile show reduction ramp-rate violations 10% yearly intervals below 1% 12 min storage. With forecasting, same level smoothing achieved 5-min rated A sensitivity analysis shows impacts varying constraints, as rating, size geographic smoothing, forecast window length, magnitude.