基于逆变器下垂控制的微电网动态性能分析  

Analysis on the Dynamic Performance of Microgrid Based on Droop Control of Inverters

作　　者：杨俊虎[1] 韩肖清[2] 曹增杰[2] 郭凯[1] 

机构地区：[1]山西省电力勘测设计院,太原030001 [2]太原理工大学电气与动力工程学院,太原030024

出　　处：《南方电网技术》2012年第4期48-52,共5页Southern Power System Technology

基　　金：国家国际科技交流与合作专项"含分布式电源的微电网运行与优化控制的合作研究"(2010DFB63200)~~

摘　　要：微电网采用下垂控制可以提高系统运行的可靠性和灵活性,易于实现分布式电源和负荷的"即插即用"。建立了基于逆变器下垂控制的微电网孤岛运行的动态模型,并举一案例,分析了微电网状态矩阵的特征根与逆变器控制参数和网络参数的灵敏度关系,以及P-f、Q-V下垂系数与微电网稳定性的关系,并研究了逆变器控制参数和网络参数对不平衡负荷功率分配的影响。The droop control is a favorable way for the microgrid to improve its reliability and flexibility and to realize the ＂plug and play＂ function of its distrubuted generations and loads. This paper presents a dynamic model of islanded operation for the microgrid under droop control, and taking a case as an example, analyzes the sensitivity of the microgrid state matrix＇s eigenvalues to the inverters control parameters and network parameters, and the relationship between the P-f, Q- V droop coefficients and the microgrid stability. In addition, the influence of the inverter control parameters and network parameters on the power distribution of the unbalanced loads is studied.

关 键 词：下垂控制 微电网数学模型 稳定性 特征值分析 负荷功率分配 

分 类 号：TM711[电气工程—电力系统及自动化]