摘要
供电网络日趋复杂,对故障检测的实时性和精确性的要求也越来越高。提出了db4提升小波算法,采用了更新、预测再更新的结构。算法占用内存小,易于实现,可以满足供电系统检测的要求。用Simulink仿真供电网络故障,并利用提升小波算法进行分析,实验证明其可以精确的检测出电网故障。
Power network is becoming more and more complicated,which requires higher real time and precision of the fault detection.Db4 lifting wavelet is proposed,containing update,predict and update three steps.The algorithm requires less memory and is easy to implement,which can satisfy the need of power network detection.Simulink is used to simulate the power network and the lifting algorithm is used to analyze the output.The test demonstrates that the algorithm can detect the power network fault precisely.
出处
《微计算机信息》
2011年第6期51-52,68,共3页
Control & Automation
基金
基金申请人:袁淑娟
项目名称:基于小波变换电网谐波检测与抑制的研究(上海高校选拔培养优秀青年教师科研专项基金)
基金颁发部门:上海市教育委员会(sdl08042)
关键词
db4小波
电网故障
提升小波
db4 wavelet
power network fault
lifting wavelet
