PI控制器参数对并网永磁直驱型风力发电系统机网相互作用的影响
发布时间：2018-12-05 19:30
【摘要】：为了研究并网永磁直驱型风力发电(PMSG)系统的振荡问题,建立了基于PQ解耦控制的PMSG系统的小信号模型。用特征值分析法和相关因子分析方法,找出了系统所有的振荡模态、特征频率和主导每种振荡模态的状态变量,并用基于Copula理论的分布估计算法寻找最优的PI控制器参数组合。通过MATLAB/Simulink平台进行时域仿真,验证了各种振荡模态的存在。在不改变系统稳定性的前提下,依次改变变流器的控制参数,研究了系统的次同步控制相互作用、次同步振荡和低频振荡模态的变化情况。利用最佳PI控制器参数对所建PMSG系统模型进行模态分析,仿真结果验证了所提模型的正确性。
[Abstract]:In order to study the oscillation of (PMSG) system in grid-connected permanent magnet direct-drive wind power generation, a small-signal model of PMSG system based on PQ decoupling control is established. By means of eigenvalue analysis and correlation factor analysis, all oscillation modes, characteristic frequencies and state variables dominating each oscillation mode of the system are found, and the optimal combination of PI controller parameters is found by the distribution estimation algorithm based on Copula theory. The existence of various oscillatory modes is verified by time domain simulation on MATLAB/Simulink platform. Without changing the stability of the system, the control parameters of the converter are changed in turn, and the variation of the subsynchronous control interaction, the sub-synchronous oscillation and the low-frequency oscillation mode of the system are studied. The modal analysis of the PMSG system model is carried out by using the optimal parameters of the PI controller. The simulation results verify the correctness of the proposed model.
【作者单位】： 上海交通大学电气工程系电子信息与电气工程学院;上海电机学院电气学院;
【基金】：国家自然科学基金资助项目(51277119,51477098) 国家电网公司科技项目(电压源型换流器群及其与电网间振荡的机理与抑制方法研究)(5442NY160025)~~
【分类号】：TM614
[Abstract]:In order to study the oscillation of (PMSG) system in grid-connected permanent magnet direct-drive wind power generation, a small-signal model of PMSG system based on PQ decoupling control is established. By means of eigenvalue analysis and correlation factor analysis, all oscillation modes, characteristic frequencies and state variables dominating each oscillation mode of the system are found, and the optimal combination of PI controller parameters is found by the distribution estimation algorithm based on Copula theory. The existence of various oscillatory modes is verified by time domain simulation on MATLAB/Simulink platform. Without changing the stability of the system, the control parameters of the converter are changed in turn, and the variation of the subsynchronous control interaction, the sub-synchronous oscillation and the low-frequency oscillation mode of the system are studied. The modal analysis of the PMSG system model is carried out by using the optimal parameters of the PI controller. The simulation results verify the correctness of the proposed model.
【作者单位】： 上海交通大学电气工程系电子信息与电气工程学院;上海电机学院电气学院;
【基金】：国家自然科学基金资助项目(51277119,51477098) 国家电网公司科技项目(电压源型换流器群及其与电网间振荡的机理与抑制方法研究)(5442NY160025)~~
【分类号】：TM614
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