通过使用窄带通滤波器和小波分析用以检测共轭耦合点谐波电压的跳变来实现孤岛检测  

Test Of Conjugate From Narrow Band Filter And Wavelet Analysis To Realize Island Test Based On The Switching Point Voltage Of Wavelet

作　　者：王中[1] 吴赛[2] 

机构地区：[1]黑龙江省林业设计研究院 [2]哈尔滨理工大学电气与电子工程学院

出　　处：《林业科技情报》2015年第1期57-63,共7页Forestry Science and Technology Information

摘　　要：此文表述了基于编码的使用窄带通滤波器和小波滤波器用以在Simulink中实现孤岛检测的功能。分布式电网的拓扑结结构由并网逆变器和LCL滤波器构成。比例谐振控制器用以来控制逆变器。窄带通滤波器用来提取所有信号中的基波分量。开关断开用以来模拟孤岛现象,并采用两种方法来检测孤岛的发生。第一种采用窄带通滤波器来检测特定的共轭耦合点上的谐波电压在孤岛前和孤岛后的变化,第二种采用小波滤波器来检测谐波电压的跳变。The particle expresses the coding based on the use of narrow band- pass filter and wavelet filter to achieve islanding detection function in Simulink. Topology distributes grid structure which consists of grid- connected inverter and LCL filter for the ratio of the resonant controller with inverter control. Narrow band pass filter for extracting a fundamental component of all signals. Since the analog switches off with the island phenomenon,the usage of two methods to detect the occurrence of an island is possible. The first use of narrow band pass filter to detect specific conjugate harmonic voltage coupling is pointing on the islands before or after the change of islands,the second wavelet filter is to detect the transition by harmonic voltage.

关 键 词：谐波 孤岛检测 小波方法 

分 类 号：TN713[电子电信—电路与系统]