Influence of RES Integrated Systems on Energy Supply Improvement and Risks

RES (renewable energy sources) plays a very important role in the context of sustainable development, as an alternative to fossil fuels and nuclear power.

This paper presents the description of a RES technology cluster – an integrated system, which consists of equipment using different types of RES. It demonstrates that the stochasticity of renewable energy input influences the energy supply reliability. The work considers the influence of diversification of different RES sources on the improvement of energy supply reliability and reduction of risks connected with energy loss. Based on mathematical simulation using the convex optimization method, the authors propose a novelty solution to determine the most effective equipment configuration of an integrated energy system – a RES cluster. Effective computer programs have been developed and registered in order to calculate the optimal integrated renewable energy system in the Russian Federation.

The optimization criterion is the minimal cost of generating 1kWh of electricity of the whole complex of renewable energy sources. The feature of calculating the optimal combination of renewable energy sources is based on the variance of random variables, climatic characteristics unlike average for the year. This approach improves the accuracy of calculations by 25-40%. This leads to a reduction in capital equipment costs and reducing the cost of production of 1kWh of electricity.