摘要
针对因电压不平衡而引起的各分布式电源相角畸变、并网电流不对称等问题,提出了一种基于降阶谐振调节器的电压正负序分离及相角检测方法。介绍了现有正负序分离方法,就其运算复杂的缺点提出改进,并对改进的分离方法及其参数设计分析。与传统方法相比,改进的正负序分离方法能快速分离不平衡电网电压,得到实时相位角,保证了控制系统的实时性。最后在Matlab/Simulink软件平台进行仿真,并通过实验验证控制策略的可行性。
In view of such problems as phase angle distortion and asymmetry of grid-connected currentof distributed power sourcedue to voltage imbalance,a kind of voltage positive and negative sequence separation and phase angle detection method based on a reduced-order resonant regulator is proposed.The existing positive and negative sequence separation method is introduced.The improvement to the shortcomings of its complicated operation is proposed and the improved separation method and its parameter design are analyzed.The improved positive and negative sequence separation method,compared to the traditional method,can quickly separate the unbalanced grid voltage and obtain the real-time phase angle,which ensure the real-time nature of the control system.Finally,the simulation is performed on the Matlab/Simulink software platformand the feasibility of the control strategy is verified through experiment.
作者
冯胜洲
李岚
靳杰
于海洋
FENG Shengzhou;LI Lan;JIN Jie;YU Haiyang(Taiyuan University of Technology,Taiyuan 030024,China)
出处
《电力电容器与无功补偿》
2021年第3期150-156,共7页
Power Capacitor & Reactive Power Compensation
基金
山西省自然科学基金(201701D121130)。
关键词
降阶谐振调节器
电压不平衡
正负序分离
双馈风力发电机
reduced-order resonant regulator
voltage imbalance
positive and negative sequence separation
doubly-fed wind power turbine
