摘要
此处提出了一种新型的电网电压基波正负序分量检测方法,从电压复矢量的理论出发,通过短延时与多变量滤波器(MVF)结合的方法来获取准确的基波正负序分量。分析了MVF的原理及时域和频域特性,利用复矢量滤波器来消除谐波对检测结果的影响。最后对所提出的方法进行仿真和实验验证,结果表明了在电网电压不平衡或畸变时该方案的正确性和有效性。
A novel detection method of fundamental positive and negative sequence component of grid voltage can be detected by short time delay and mult-variable filter(MVF).Based on the complex vector theory,the characteristic and the time and frequency domains of MVF are analyzed.The influence from harmonic to test results is eliminate by the complex vector filter.Result of simulation and experiment verified the validity of the presented detection method.
作者
李春
毛琼一
陈国栋
LI Chun;MAO Qiong-yi;CHEN Guo-dong(Shanghai Electric Power Transmission&Distribution Group,Shanghai Electric Group Co.,Ltd.,Shanghai 200042,China)
出处
《电力电子技术》
CSCD
北大核心
2019年第11期93-95,共3页
Power Electronics
关键词
多变量滤波器
正负序分量
复矢量
multi-variable filter
positive and negative sequence component
complex vector
