| In recent years,with the development of the State Grid,automation,monitoring,bidirectional flow of power information between user nodes,and the demand for safe,reliable and economic power transmission,the development of the smart grid is gradually increasing.During the "12th Five-Year",the State Grid will invest 500 billion yuan to build a world-leading smart grid.The traditional substation power transmission system is in urgent need of upgrading.In the process of reconstruction,expansion and maintenance of substations,operators and machines(such as excavators)may accidentally approach or stray into hazardous areas beyond safety limits,resulting in electric shock safety accidents.Therefore,this thesis designs a set of substation operation safety monitoring software system based on LASER and UWB(Ultra Wide Band),and through a large number of experiments to complete the positioning accuracy testThe content and innovation of this thesis are as follows:(1)This thesis designed a substation operation safety monitoring software system based on LASER and UWB.This system is used to locate the substation operators and machines,and can obtain the position coordinate information in real time and alarm when touching the electronic fence or the limits height range.Database storage of alarm information can export EXCEL alarm information.(2)This thesis proposed an improved three-dimensional Euclidean positioning model and a sequence learning linear regression algorithm.The improved three-dimensional Euclidean positioning model is proposed to quickly solve and correct positioning results;Online-Sequence Extreme Learning Machine algorithm is used to train a ranging error model,to improve ranging accuracy;the linear regression algorithm is used to predict the positioning results,filter out gross error results,smooth positioning trajectory.The work of this thesis is not only theoretical innovation,but also has some practical value for the safety operation monitoring system when the substation is changed.It has a certain promotion and reference value for the theoretical development and application of UWB positioning technology. |
