The assessment of a micro-grid operation under optimal planning of Electric Energy Storage units: RSE’s case study

Abstract

The EU is committed to reducing greenhouse gas emissions to 80-95% below 1990 levels by 2050. To accomplish this goal the share of renewable energy sources have to increase significantly. Challenges related to keeping a high security of supply have raised while the share of intermittent renewable electricity generation is increasing. The increasing level of RES production leads to higher volatility in market prices. The main challenges lay within the modeling and simulation of the random variables. Therefore, the assessment of the operation of the entire micro-grid should be studied while constructing different test scenarios under uncertainty of the market prices and micro-grid configuration. This paper constructs different tests to investigate the integration of Electric Energy Storage unit technologies in a micro-grid. The assessment of the impact on the micro-grid, like congestion or voltage problem, are analyzed when the EES units are owned by a separate business entity called aggregator or a grid owner.