三相电力弹簧的无源控制策略研究
Passivity-based control strategy of three-phase electric springs
赵永熹 1张家领 1程启明1
作者信息
- 1. 上海电力大学 自动化工程学院,上海 200090
- 折叠
摘要
针对太阳能、风能等新能源设备大规模并入电网造成的电能质量下降问题,近年来出现了电力弹簧(ES)的概念.依据推导出的三相电力弹簧(TPES)的数学模型,搭建了对应的系统模型,依据无源控制(PBC)理论,分析了系统的无源性,并分别采用传统PI控制和无源控制验证了三相电力弹簧能够维持关键负载(CL)电压的稳定.通过仿真和实验验证,在有功功率变动工况下,无源控制的超调量远远低于PI控制的 13.7%,调节时间 0.03s也低于PI 控制的 0.07 s,静差率0.000 2%也小于PI控制的0.08%,表明无源控制的动态性能和静态性能都更出色.此外,相比于传统的PI控制,无源控制所需参数更少,控制系统结构更加简单.
Abstract
In recent years,the concept of electric springs(ES)has been proposed to reduce the power quality caused by the large-scale integration of solar energy,wind energy and other new energy equipment into the power grid.Based on the derived mathematical model of three phase electric springs(TPES),the corresponding system model was built.Based on the passivity-based control(PBC)theory,the pas-sivity of the system was analyzed.The traditional PI control and passive control were used respectively to verify that the three-phase power spring can maintain the voltage stability on the critical load(CL).Through simulation and experimental verification,under the active power variation condition,the over-shoot of passive control is far lower than 13.7%of PI control,the adjustment time of 0.03 s is also lower than 0.07 s of PI control,and the static error rate of 0.000 2%is also less than 0.08%of PI control,indicating that the dynamic and static performance of passive control is better.In addition,compared with traditional PI control,passive control requires fewer parameters and has a simpler control system struc-ture.
关键词
新能源/电力弹簧/三相电力弹簧/关键负载/无源控制/电能质量/电压稳定Key words
new energy/electric spring/three-phase electric spring/critical load/passivity-based con-trol/power quality/voltage stabilization引用本文复制引用
出版年
2024
NETL
NSTL
万方数据