大规模电网中电压浪涌故障检测方法研究

摘要

Research fault accurate recognition of grid system. Grid system structure is complex and has many levels. This paper put forward a system fault detection algorithm based on resolution matrix and information entropy. By combining fault information resolution matrix and fault information entropy, the resolution matrix distinguish fault information was utilized to complete the fault detection. The experiment results show that the algorithm improve the accuracy of identification.%研究大规模电网中的故障准确检测,在大规模的电网中,由于电网的相关设备量较大,一些大型设备的频繁启动容易造成电压的浪涌变化,可形成电压的突变故障.浪涌变化在瞬间出现,具有很高的非线性和突变性.传统的故障检测方法是对周期性的故障特征进行分析查找,电压浪涌故障特征的非线性和突变性会大幅降低故障特征的明显属性,使故障检测的效率不高.为此提出了一种分辨矩阵与信息熵相结合的电网故障检测算法.改进算法通过将故障信息分辨矩阵与故障信息熵相结合,利用分辨矩阵对故障的区分能力,以故障属性在分辨矩阵中的出现频率作为故障检测的依据.仿真结果表明,提出算法能够加快准确的完成,电网浪涌故障智能准确检测.