文章导读
总览 评价 梁漪 1, , 李雅梅 1,* , 黄艺谋 1, , 刘垚 2, ( 1、 辽宁工程技术大学电气与控制工程学院,葫芦岛 125105; 2、 东北财经大学萨里国际学院,大连 116000; ) 摘要: 电力谐波是公用电网的一种污染,对于电力工程要求能及时分析谐波阶次并
梁漪1,, 李雅梅1,*, 黄艺谋1,, 刘垚2,
(
1、辽宁工程技术大学电气与控制工程学院,葫芦岛 125105; 2、东北财经大学萨里国际学院,大连 116000; )
摘要:
电力谐波是公用电网的一种污染,对于电力工程要求能及时分析谐波阶次并且将其滤除。本文应用按时间抽选的基-2FFT算法对信号进行分析得到谐波阶次,首先人为的模拟实际工程中的电网信号,再对其做FFT分析,结果验证了原始信号包含了5、7、11次谐波。利用Parks-McClellan 算法在切比雪夫最佳一致逼近基础上设计滤波器,将谐波信号滤除得到比较纯净的电网信号,MATLAB运行结果也明确显示基本得到电网中的工频信号,证明了滤波器的可以在实际工程中应用。?????
关键词:
信号与信息处理;谐波信号;基-2FFT;滤波器;Parks-McClellan;?????
LIANG Yi1,, LI Yamei1,*, HUANG YiMou1,, LIU Yao2,
(
1、School of Electrical and Control Engineering, Liaoning Technical University, Huludao 125105; 2、Dongbei University of Finance Surrey International College, Dalian 116000; )
Abstract:
power harmonic is a kind of pollution for the public power grid, toward the electric power engineering requires to analyze harmonic degree at time and filter it. This report according to the time select radix -2FFT algorithm to analyze the signal and get the harmonic degree. First artificial simulation the power grid signal in practical engineering, the use the FFT to analyze it, finally the result verified the original signal contains 5,7,11 harmonics. Using the Parks-McClellan algorithm on the basis of Chebyshev best consistent approximation design wave filter. Filtering out harmonic signal and get the pure power grid signal. The results of MATLAB also clearly show that it get the frequency signal in the power grid, it proves the wave filter can use in the practical engineering.
Tag:
点此返回栏目查看更多>>>参考论文