| 自适应相量计算方法 |
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| 引用本文： | 常宝波,张培荣,徐广腾.自适应相量计算方法[J].电力系统自动化,2008,32(11):53-55. |
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| 作者姓名： | 常宝波 张培荣 徐广腾 |
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| 作者单位： | 烟台东方电子信息产业股份有限公司技术中心,山东省烟台市,264000 |
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| 摘 要： | 提出了一种电流电压相量的计算方法,其特征为利用余弦滤波器滤出的当前点和前推1/4周期后的点分别经幅频特性系数修正后作为相量的实部和虚部。与目前所用的方法相比,无需调整硬件的采样间隔就可实现频率的自适应性,且具有幅频特性一致、相频特性正交、动态收敛性好、计算量少等特点,无需加差分滤除直流分量。
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| 关 键 词： | 相量计算 余弦滤波器 继电器 |
| 收稿时间： | 12/3/2007 4:18:18 PM |
| 修稿时间： | 2/18/2008 4:12:59 PM |
Adaptive Phasor Calculation Method |
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| CHANG Baobo,ZHANG Peirong,XU Guangteng.Adaptive Phasor Calculation Method[J].Automation of Electric Power Systems,2008,32(11):53-55. |
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| Authors: | CHANG Baobo ZHANG Peirong XU Guangteng |
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| Abstract: | This paper presents a new method for current or voltage phasor calculation(PC).The method uses the cosine filter(CF)and amplitude-frequency coefficient correction to filter out the real part of a phasor at the present sampling,and the imaginary part of the phasor at the a-quarter-period-before sampling.With this method,it is possible to calculate the phasors adaptively without any hardware changing sampling interval.It has characteristics such as amplitude-frequency consistency,phasor-frequency orthogonality,fine dynamic convergence,less calculation burden,and has no need to add differential filter to remove direct current(DC)component. |
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| Keywords: | phasor calculation cosine filter relay |
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