考虑储能的新能源弹性电网静态稳定性评估

Static Stability Assessment on New Energy Elastic Power Grid Considering Energy Storage

为验证新能源电网配置储能系统能够提高电网静态稳定性,基于弹性映射理论和电网静态稳定边界特征,将电网的网络-负荷部分映射为弹性电网。利用三机九节点系统进行仿真分析,构造风电节点发电,以及在此基础上配置储能系统的两个电力系统。利用电网广义弹性指标判断电网的静态稳定性,并与正常电力系统进行对比。结果表明,配置储能系统能够提高新能源电网的静态稳定性,提升新能源消纳量。

To verify that the configuration of an energy storage system for a new energy power grid can improve its static stability,the network-load part of the power grid is mapped to an elastic power grid based on the elastic mapping theory and the static stability boundary characteristics of the power grid.A three-machine nine-node system is used for simulation analysis,and two power systems are constructed for the wind power node generation and the energy storage system which is configured correspondingly.The generalized elasticity index of the power grid is used to judge its static stability,and the elastic power grid is compared with a normal power system.Results show that the configuration of the energy storage system can improve the static stability of the new energy power grid and increase the new energy consumption.