微网的小扰动建模及动态特性分析
Small-Signal Modeling and Dynamic Analysis of Microgrid
周波 1邓虹 1杨秀1
作者信息
摘要
主要研究了3节点微网的小干扰稳定性,该微网由光伏发电、风力发电、储能蓄电池、阻感负载和感应电动机负载组成.建立了微网系统完整的小扰动模型,利用该模型分析一个算例系统的小干扰稳定性,利用特征模态的参与因子分析状态变量与振荡模态之间的关联程度,用特征值轨迹法调整控制器参数以提高系统的小干扰稳定性.最后在PSCAD/EMTDC中搭建完整的仿真模型,对光照强度突升和风速突降的情况进行仿真,验证了小扰动建模和分析的正确性.
Abstract
This paper researches the small-signal stability of a 3-node microgrid,which consists of PV power generation,wind power generation,energy storage battery,resistance-inductance load and induction motor.Establish a complete small-signal model for the microgrid; analyze the small-signal stability of a calculation case by means of eigenvalues analysis ; analyze the relevance between between oscillation mode and state variable by means of participation factors; adjust the controller's parameters by eigenvalue locus method to improve the system small-signal stability.Finally,the simulation model of PV power generation system was constructed based on PSCAD/EMTDC.Simulations were conducted on the sharply rising light intensity and plunged wind speed,verifying the correctness of the small disturbance modeling and analysis.
关键词
光伏发电/风力发电/微网/小干扰稳定性/特征值分析/参与因子Key words
PV power generation/wind power generation/microgrid/small-signal stability/eigenvalue analysis/participation factors引用本文复制引用
出版年
2014
NETL
NSTL
维普
万方数据