Dynamic Modeling of Electric Springs Embedded in the Future Smart Grid

摘要

The intermittent and unpredictable nature of renewable energy brings great challenges to new energy power generation. Electric spring (ES) is an innovative generation of smart grid technology aiming to automatically balance the power generation and loads consumption. However, for further study on electric springs working for voltage and frequency regulation, it is necessary to develop a simple and yet accurate model for simulation. A state-space model for an ES embedded in power system with distributed generation, where it contains not only the structure of electric springs, but also supply voltages and transmission line impedances is proposed in this paper. Some numerical simulations are conducted and the results of simulation show the validity and reliability of the state-space model.