基于自适应惯量阻尼综合控制算法的虚拟同步发电机控制策略

发布时间：2018-09-18 09:48

【摘要】：在逆变控制领域,虚拟同步发电机(VSG)控制策略可解决分布式能源并网系统缺少惯性的问题来有效支撑电网频率,然而现有VSG控制手段往往忽略了阻尼的作用。为进一步提升VSG对频率稳定性的贡献,在传统VSG控制策略的基础上,结合力学原理证实了VSG虚拟惯量可进行实时变化的可行性,分析了同步发电机转子惯量和阻尼系数与系统频率稳定性的关系,并设计了一种自适应惯量阻尼综合控制(SA-RIDC)算法,实现了虚拟转动惯量与虚拟阻尼的交错控制。通过MATLAB/Simulink仿真工具,将所提出的SA-RIDC算法与传统固定惯量阻尼控制和自适应惯量控制进行对比,结果表明SA-RIDC算法在改善系统频率稳定性方面有着显著的效果。
[Abstract]:In the field of inverter control, the (VSG) control strategy of virtual synchronous generator can solve the problem of lack of inertia in distributed energy grid connection system to effectively support the frequency of power grid. However, the existing VSG control methods often ignore the role of damping. In order to further enhance the contribution of VSG to frequency stability, the feasibility of VSG virtual inertia can be changed in real time based on the traditional VSG control strategy and the mechanics principle. The relationship between rotor inertia and damping coefficient and frequency stability of synchronous generator is analyzed. An adaptive inertia damping integrated control (SA-RIDC) algorithm is designed to realize the interleaving control of virtual moment of inertia and virtual damping. The proposed SA-RIDC algorithm is compared with the traditional fixed inertia damping control and adaptive inertia control by MATLAB/Simulink simulation tool. The results show that the SA-RIDC algorithm has a remarkable effect on improving the frequency stability of the system.
【作者单位】：上海电力学院电气工程学院;上海高校高效电能应用工程研究中心;美国德州电力可靠性委员会;
【基金】：国家自然科学基金资助项目(51507100,51407114) 上海市科学技术委员会资助项目(15YF1404600,13DZ2251900,10DZ2273400) 上海市教育发展基金会和上海市教育委员会“曙光计划”资助项目(15SG50)~~
【分类号】：TM31

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