摘要
提出利用三相电压采样值计算频率的“虚拟电枢磁势”法。此方法构想了一种“虚拟电机”，以它的“电枢磁势”的旋转角速度作为节点的动态频率。此方法在计算过程中，能够滤除零序分量；在结合自适应调整采样周期方法之后，又消除了整次谐波和负序分量对测量频率的影响，跨越了繁琐复杂的滤波和滤序的过程，快速精确地测算了真实的电力系统实时频率。
The paper presents a method of 'virtual armature magnetic flux' by using the sampling value of three-phase voltage. In this method, the rotating angular velocity of the 'virtual armature magnetic flux' is taken as the dynamic fre- quency of the node. This calculation can eliminate the influence of negative-sequence, zerosequence and harmonic signals, thus it is fast and accurate to obtain the true frequency of the power system.
出处
《中国电力》
CSCD
北大核心
2000年第8期31-34,共4页
Electric Power
关键词
动态频率
测量
虚拟电枢磁势法
电力系统
dynamic frequency
virtual armature magnetic flux
self-adaptive adjustment
sampling cycle
