摘要
提出了一种基于方波电流注入的正弦调制阻抗测量方法,用于获取三相交流系统在dq坐标系中的谐波阻抗矩阵。该方法采用相间注入方式,相较于三相注入,降低了硬件实现难度,且与传统顺序扫频法相比,其测量过程用时较短。仿真结果表明,采用该测量方法所得测量值与理论计算值在一定频率范围内一致,从而证实了该方法的可行性和有效性。
The paper proposes a square-wave current injection based sinusoidal modulated impedance measuring method,in which phase to phase injection is used and the difficulty in hardware implementation is reduced comparing with three-phase injection,to obtain the harmonic impedance matrix of three-phase AC system under dq reference frame.Compared with the traditional frequency-sweeping method,the measuring process of this method takes much less time.The simulation results show that the measuring value well matches the calculating value within certain range of frequency,which verifies the feasibility and effectiveness of the proposed method.
出处
《陕西电力》
2014年第12期39-43,47,共6页
Shanxi Electric Power
关键词
方波电流注入
正弦调制
谐波阻抗矩阵
阻抗测量
square-wave current injection
sinusoidal modulation
harmonic impedance matrix
impedance measurement
