摘要
针对传统的变压器局放定位方法误差大的问题,提出了基于改进多平台定位原理的定位方法。测向线在定位计算中的权重值与测向平台和局放源之间的距离成反比,建立空间某一点到各条测向线距离与权重值乘积之和的函数,函数最小值对应的点即为局放源的空间位置。通过模拟实验测得阵列中不同传感器接收到的超声信号峰值的平均值随局放源与测向平台之间距离的变化曲线,在求得超声信号峰值平均值的前提下,根据对应的变化曲线即可求得测向平台与局放源之间的距离,在此基础上采用改进多平台定位方法即可求得局放源的空间坐标。
In view of the large error in traditional transformer partial discharge （PD） positioning methods, the positioning method based on improved multi-platform positioning principle is proposed in this paper. Notice that the weight of the measurement line in positioning calculation is inversely proportional to the distance between the source and the platform, we establish the function defined as the sum of products of the weight and the distance between a point and each measurement line, and take the point corresponding to function minimum as the position of the discharge source. In simulation experiment, ultrasonic signals are received by different sensors in the array, and the changes of the average of the signal peaks with the distance between the discharge source and the positioning platform can be measured. Once the average of the peaks received by the sensors is obtained, the distance between the PD source and the platform can be easily achieved based on the change curve. Therefore, the spatial coordinate of the source can be calculated using the above proposed improved multi-platform positioning method.
出处
《电测与仪表》
北大核心
2014年第6期45-49,共5页
Electrical Measurement & Instrumentation
关键词
局放源定位
改进多平台定位原理
权重值
峰值平均值
定位误差
PD source positioning
improved multi-platform positioning principle
weight value
average of the peak value
positioning error
