Application of Risk Evaluation to Composite Systems with Renewable Sources

This chapter discusses the application of risk assessment to composite generation and transmission systems with renewable energy sources. Two challenging issues are addressed. The first one is the basic risk evaluation method of a composite system with both wind farms and solar power stations and the second one is the determination of transmission transfer capability required by wind generation integration. Multiple correlations among renewable resources and bus/regional load curves are modeled using the generalized correlation matrix method that can deal with any nonnormal distributions. In the risk evaluation method for composite system with renewable energy sources, modeling the multiple correlations of random variables following nonnormal probability distributions is the key.