传统模拟同步电机组主要采用原动机拖动同步发电机旋转发电来实现,该方法虽能更有效地模拟电网中同步电机组的电磁耦合特性,但存在控制系统复杂、系统灵活性差、实现成本高等不足。为此,基于虚拟同步发电机控制原理提出了一种模拟同步...传统模拟同步电机组主要采用原动机拖动同步发电机旋转发电来实现,该方法虽能更有效地模拟电网中同步电机组的电磁耦合特性,但存在控制系统复杂、系统灵活性差、实现成本高等不足。为此,基于虚拟同步发电机控制原理提出了一种模拟同步发电机组设计方法。该方法利用滤波电抗等效代替同步发电机组电枢电阻及同步电抗,通过控制系统实现对同步发电机组惯性特性、频率响应特性及调压特性的有效模拟。该方法简化了模拟风电并网实验系统的设计,具有较强的灵活性和可行性。设计了一套容量为20 k VA的模拟同步发电机组,并基于已有的模拟风电机组实验平台构建了一套模拟风电并网实验系统。在负荷功率扰动条件下,利用Matlab/Simulink仿真结果与实验结果进行对比,验证了所提模拟同步发电机组设计方法的有效性及在风电机组频率响应控制研究中应用的可行性。展开更多
According to a research on the 30kVA simulation experimental platform of hydraulic wind tur- bine, its basic structure, composition and operation principle are expounded in this paper. An in- verter motor is used to s...According to a research on the 30kVA simulation experimental platform of hydraulic wind tur- bine, its basic structure, composition and operation principle are expounded in this paper. An in- verter motor is used to simulate the wind turbine, while a similarity calculation method is applied be- tween the small and large wind turbine. A fixed displacement pump-variable motor closed loop is used as the main transmission system, and a self-excited synchronous generator generates electricity through the grid connection. The experiment and simulation study on the speed and power control of the hydraulic wind turbine is conducted, based on the experimental platform, thus correctness and progressiveness of the experiment platform is further verified. The experimental platform study lays a foundation for further research on the characteristics of hydraulic wind turhln~展开更多
文摘传统模拟同步电机组主要采用原动机拖动同步发电机旋转发电来实现,该方法虽能更有效地模拟电网中同步电机组的电磁耦合特性,但存在控制系统复杂、系统灵活性差、实现成本高等不足。为此,基于虚拟同步发电机控制原理提出了一种模拟同步发电机组设计方法。该方法利用滤波电抗等效代替同步发电机组电枢电阻及同步电抗,通过控制系统实现对同步发电机组惯性特性、频率响应特性及调压特性的有效模拟。该方法简化了模拟风电并网实验系统的设计,具有较强的灵活性和可行性。设计了一套容量为20 k VA的模拟同步发电机组,并基于已有的模拟风电机组实验平台构建了一套模拟风电并网实验系统。在负荷功率扰动条件下,利用Matlab/Simulink仿真结果与实验结果进行对比,验证了所提模拟同步发电机组设计方法的有效性及在风电机组频率响应控制研究中应用的可行性。
基金Supported by the National Key Basic Research Development Program of China(No.2014CB046405)the National Natural Science Foundation of China(No.51475406,51405423)the Hebei Youth Fund(No.QN20132017)
文摘According to a research on the 30kVA simulation experimental platform of hydraulic wind tur- bine, its basic structure, composition and operation principle are expounded in this paper. An in- verter motor is used to simulate the wind turbine, while a similarity calculation method is applied be- tween the small and large wind turbine. A fixed displacement pump-variable motor closed loop is used as the main transmission system, and a self-excited synchronous generator generates electricity through the grid connection. The experiment and simulation study on the speed and power control of the hydraulic wind turbine is conducted, based on the experimental platform, thus correctness and progressiveness of the experiment platform is further verified. The experimental platform study lays a foundation for further research on the characteristics of hydraulic wind turhln~
