作　　者： ; ; ;

机构地区： 哈尔滨工业大学电气工程及自动化学院

出　　处： 《电测与仪表》 2012年第4期18-23,共6页

摘　　要： 立体地线网络广泛用于航天、航空和航海等重要装备中。为了确保立体地线网络本身的接地性能,建立接地电阻的精确测量方法及其评价体系,本文基于网络图论建立了立体地线的等效模型,通过矩阵变换及元素重构等专门处理,推演出一种直接反映支路电阻与节点电压、电流关系的线性最小二乘模型及其辨识算法。本文同时介绍了以及实验装置和测试系统的组建过程、软件操作界面和使用方法。通过开发实际辨识软件和试验系统,并分析该算法在实际立体地线网络实验系统中的实验效果,验证了此种方法的可行性及可重复性,能够达到满意的测量精度。 Stereoscopic ground network is widely used in aerospace,aviation,navigation and other important areas.To ensure the grounding quality of stereoscopic ground network and establish a precise testing method and its evaluation system of grounding resistance,this paper established the equivalent stereoscopic ground model based on the concepts of network graph theory,and derived the least squares model and identification equation which could directly reflect the relationship between branch resistance,node voltage and current through the matrix transformation and elements construction.Meanwhile,described the construction process of the experimental device,developed the user interface of testing and actual measurement data analysis.Through developing the actual identification software and testing system and analyzing the experiment effect of the actual stereoscopic ground test system to verify the feasibility and repeatability of this method,which can obtain satisfactory precision.

关 键 词： 立体地线网络 自动测试 电阻辨识 最小二乘算法

领　　域： [电气工程]