电力系统自动化中智能指针型仪表自动校验方法研究  

Research on Automatic Calibration Method for Intelligent Pointer-type Instruments in Power System Automation

作　　者：唐海慧 傅宇辰 Tang Haihui;Fu Yuchen(State Grid Jiangsu Electric Power Co.,Ltd.Yancheng Power Supply Branch,Yancheng,Jiangsu,China,224100)

机构地区：[1]国网江苏省电力有限公司盐城供电分公司,江苏盐城224100

出　　处：《仪器仪表用户》2024年第7期89-91,共3页Instrumentation

摘　　要：文章针对电力系统自动化中智能指针型仪表自动校验方法展开研究。首先介绍了指针型仪表图像的滤波和分割方法,将RGB颜色模型转换为HSI色彩模型,并利用色调和饱和度信息进行图像分割,以消除亮度分量对图像分割的影响,从而准确提取出指针和分度线。提出了利用投影极值检测法确定仪表指针和分度线的长度,并通过像素点减法运算和Hough变换确定指针的位置和形状。向量处理仪表表盘指针方向,计算指针偏转角,实现了智能指针型仪表的自动校验。实验结果表明,所提方法能够满足校验要求,具有较高的实时性和精度。This article investigates the automatic verification method for intelligent analog meters in power system automation.Firstly,the filtering and segmentation methods for analog meter images are introduced.The RGB color model is converted to the HSI color model,and image segmentation is performed using hue and saturation information to eliminate the impact of brightness components on image segmentation,thus accurately extracting the pointer and graduation lines.The projection extreme detection method is proposed to determine the lengths of the meter pointer and graduation lines,and the position and shape of the pointer are determined through pixel subtraction operations and Hough transforms.Vector processing is applied to handle the pointer direction of the meter dial,and the pointer deflection angle is calculated to achieve automatic verification of intelligent analog meters.Experimental results show that the proposed method can meet the verification requirements with high real-time performance and accuracy.

关 键 词：智能指针型仪表 自动校验方法 HSI色彩模型 图像分割 投影极值检测法 指针偏转角 向量处理 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]