基于超声阵列传感器与遗传MUSIC的局放源波达方向估计
发布时间：2018-12-13 18:13
【摘要】：基于超声阵列传感器的局放源波达方向估计是局部放电准确定位的基础。传统MUSIC测向算法的精度和搜索成功率较低,据此提出一种基于超声阵列传感器与遗传MUSIC算法的局放源波达方向估计新方法。遗传MUSIC算法利用空间谱估计公式构造适应度函数,基于遗传迭代搜索的思想对方位角进行谱峰搜索,以获得全局最优解。通过建立信号模型、阵列模型开展了大量仿真实验,并采用寻优精度、搜索成功率和搜索时间等三个指标为依据,对经典MUSIC和遗传MUSIC的测向结果进行对比。结果表明,基于遗传MUSIC算法提高了搜索成功率,绝对精度相较传统MUSIC算法误差减小0.3°,可以获得更高精度的局放源波达方向角。
[Abstract]:DOA estimation based on ultrasonic array sensor is the basis of PD location. The accuracy and search success rate of the traditional MUSIC direction finding algorithm are low. A new method for DOA estimation of PD source based on ultrasonic array sensor and genetic MUSIC algorithm is proposed. Genetic MUSIC algorithm uses spatial spectral estimation formula to construct fitness function. Based on the idea of genetic iterative search, the spectral peak of azimuth is searched to obtain the global optimal solution. Through the establishment of signal model and array model, a large number of simulation experiments were carried out, and the results of direction finding of classical MUSIC and genetic MUSIC were compared based on the three indexes of searching accuracy, search success rate and search time. The results show that based on genetic MUSIC algorithm, the search success rate is improved, and the absolute accuracy is 0.3 掳less than that of the traditional MUSIC algorithm, and the DOA of PD source can be obtained with higher precision.
【作者单位】： 华北电力大学河北省输变电设备安全防御重点实验室;
【基金】：国家高技术研究发展计划(863计划)(2011AA05A121)
【分类号】：TN911.7
[Abstract]:DOA estimation based on ultrasonic array sensor is the basis of PD location. The accuracy and search success rate of the traditional MUSIC direction finding algorithm are low. A new method for DOA estimation of PD source based on ultrasonic array sensor and genetic MUSIC algorithm is proposed. Genetic MUSIC algorithm uses spatial spectral estimation formula to construct fitness function. Based on the idea of genetic iterative search, the spectral peak of azimuth is searched to obtain the global optimal solution. Through the establishment of signal model and array model, a large number of simulation experiments were carried out, and the results of direction finding of classical MUSIC and genetic MUSIC were compared based on the three indexes of searching accuracy, search success rate and search time. The results show that based on genetic MUSIC algorithm, the search success rate is improved, and the absolute accuracy is 0.3 掳less than that of the traditional MUSIC algorithm, and the DOA of PD source can be obtained with higher precision.
【作者单位】： 华北电力大学河北省输变电设备安全防御重点实验室;
【基金】：国家高技术研究发展计划(863计划)(2011AA05A121)
【分类号】：TN911.7
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