Research on storage system capacity of distributed wind power based on prediction error compensation

Abstract

According to the theory that wind power prediction error approximatively follows a normal probability distribution, this article introduces a concept of error tolerance rate of wind power prediction, and comes to the relationship between the capacity of energy storage system (ESS) and error tolerance rate. Furtherly, the relationship between the size of the storage capacity and the economic costs, as well as the relationship between the size of storage system capacity and some other factors that may affect the security and stability of grid, are explored. The results can guide to configure an appropriate capacity of the energy storage system under a reasonable error tolerance rate, so to ensure the safety and stability of grid and the economy can be simultaneously optimized to some extent.