摘要
针对变压器局部放电超声波定位在国内的研究进展展开论述.目前变压器局部放电定位检测的主要手段是超声波定位法,先进的智能算法对变压器局部放电超声波定位提高收敛性和定位精度上有较好的效果.超声波传感器阵列能够比单个探头更好的实现局部放电源的定位,对超声波传感器阵列的优化稀疏和对阵列信号的处理算法的研究对实际工程具有重要意义,超声波与光法结合为局部放电定位提供了新的思路.现场实际情况可以看出,超声波法对于变压器局部放电的定位有一定的效果,可是对于大型变压器绕组深处的局部放电定位的精度不高,而对超声波在变压器绕组和绝缘中的传播特性的研究是解决这一问题的有效手段.
This paper is mainly about the researches of transformer partial discharge (PD) location using ultrasonic method in China.Ultrasonic method is the main method to positioning the PD in the transformer,and the intelligent algorithms can improve the convergence speed and precision in the positioning the PD using ultrasonic method.Compared to the single ultrasonic sensor,ultrasonic arrays can improve the PD location in the transformer,and the sparse optimization of the ultrasonic arrays and the algorithms to process the arrays signals are the keys to the PD location.The optical sensors can give better ultrasonic signals.From the field engineering,the ultrasonic method can positioning the PD in transformer,however,it is found that the PD location has a larger error if the PD occurred in the windings of the large transformer,so it is important to study the propagation characteristics of the ultrasonic in the power transformer.
作者
王建元
梁惠娟
康爱民
Wang Jianyuan;Liang Huijuan;Kang Aimin(Electrical Engineering College,Northeast Electric Power University,Jilin,132012;State Grid Corporation of China,Liaoning Fuxin Country Power Supply Company,Fuxin Liaoning, 123000)
出处
《东北电力大学学报》
2019年第2期10-14,共5页
Journal of Northeast Electric Power University
基金
国家自然科学基金资助项目(51507029)
