摘要
针对原子分解算法仅仅保留当前最佳解,而忽略其对以后步骤影响的问题,提出一种树状型的改进原子分解算法,利用树状图从所有可能的向量组合中,选择逼近误差最小的核函数组合作为最佳字典向量,每次保留多个局部极值作为候选项,找到传统原子分解和全局最优解之间的折衷。仿真电能质量扰动录波数据表明,新方法能够有效地应用到电能质量扰动信号中,可以对电能质量仿真数据进行可行性分析,结果证明了所提方法的良好性能。
In the light of atomic decomposition algorithm keeps only the current optimal solution, and ignore the influence upon future steps, a tree shape type improvement atomic decomposition algorithm is proposed by using the tree from all possible vector combination, approximation error minimum kernel function combination is chosen as best dictionary vector, every time more than one local extreme value are kept as a candidate items to find the compromise between traditional atomic decomposition and global optimal solution. The simulation of power quality disturbance wave record data shows that the new method can be effectively applied to the power quality disturbance signal, electric power quality simulation data can be used in feasibility analysis. The results show the good performance of the proposed method.
出处
《陕西电力》
2013年第2期6-9,共4页
Shanxi Electric Power
基金
科技部基础创新基金(09NCKJ07)
关键词
电能质量
信号处理
原子分解
树形搜索
power quality
signal treatment
atomic decomposition
tree search
