含有多个恒功率负荷的多源直流微电网振荡抑制研究

发布时间：2018-03-29 19:32

本文选题：直流微电网　切入点：恒功率负荷　出处：《电力自动化设备》2014年03期

【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。
[Abstract]:The stability condition of cascade system with constant power load at the equilibrium point is analyzed. The coupling of two sources and two loads cascade system is taken as an example. By solving the eigenvalues of the coupled system, it is shown that the coupling of two cascaded systems with the same parameters can not improve its stability. Two strategies to suppress the oscillation of DC microgrid are discussed: one is by introducing multiple parameters of the source-side converter. The phase property is combined with the value of the coupling control parameters to suppress the oscillation. The other is to eliminate the oscillation by introducing the delay of coupling control, and the simulation results show that the two strategies are feasible and effective.
【作者单位】：武汉大学电气工程学院;
【基金】：国家自然科学基金面上项目(E070602)~~
【分类号】：TM712

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