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含有多个恒功率负荷的多源直流微电网振荡抑制研究 被引量：20

Strategy of power-coupling droop control for three-phase inverter in low-voltage microgrid
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摘要 分析了带恒功率负荷的级联系统在平衡点稳定的条件,以两源和两负荷级联系统耦合为例,通过求解耦合系统的特征值表明,2个参数相同的级联系统耦合不能提高其稳定性。探讨了抑制直流微电网振荡的2种策略:一种是通过引入源侧变换器参数的多相性并配合耦合控制参数的取值来抑制振荡;另一种是通过引入耦合控制的延迟量来消除振荡。仿真结果验证了2种策略的可行性和有效性。 The balance-point stability condition of cascaded systems with constant-power loads is analyzed and the eigenvalues of a coupled system with two sources and two loads are solved as an example,which shows that the system stability can not be improved by cascading two systems with same parameters.Two strategies are discussed for DC microgrid oscillation suppression：the coordination of source-side converter parameter heterogeneity with coupling control parameter and the introduction of delayed coupling control.Their feasibility and effectiveness are verified by simulative results.
作者 李玉梅 査晓明 刘飞
机构地区 武汉大学电气工程学院
出处 《电力自动化设备》 EI CSCD 北大核心 2014年第3期40-46,共7页 Electric Power Automation Equipment
基金 国家自然科学基金面上项目(E070602)~~
关键词 直流微电网 恒功率负荷 振荡 多相性 延迟耦合 稳定性 DC microgrid constant-power load oscillation heterogeneity delayed coupling stability
分类号 TM711 [电气工程—电力系统及自动化]
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参考文献16

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共引文献404

同被引文献250

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引证文献20

二级引证文献233

电力自动化设备
2014年 第3期

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