基于马尔科夫链模型的特高压输电线路工频电磁场监测方法  

Power Frequency Electromagnetic Field Monitoring Method of UHV Transmission Line Based on Markov Chain Model

作　　者：蒋秋岩 邢劲松 马梦达 李晋 洪倩 胡笳 JIANG Qiu-yan;XING Jin-song;MA Meng-da;LI Jin;HONG Qian;HU Jia(Nuclear and Radiation Safety Center,Beijing 100082 China;National Economic and Technical Research Institute Co.,Ltd.,Beijing 102488 China)

机构地区：[1]生态环境部核与辐射安全中心,北京100082 [2]国网经济技术研究院有限公司,北京102488

出　　处：《自动化技术与应用》2024年第5期19-22,31,共5页Techniques of Automation and Applications

基　　金：国家电网有限公司总部科技项目(5200-202056453A-0-0-00)。

摘　　要：针对当前方法的特高压输电线路电磁监测误差大问题,设计基于马尔科夫链模型的工频电磁场监测方法。结合特高压输电线路环境和最大导线弧垂点布置线路工频电磁场测点,然后采用超限学习机网络模型设计传感数据修正技术,去除数据中干扰信息,并引入有限长模拟线电荷法以及毕奥-萨瓦定律计算输电导线三维电磁场分布,最后运用马尔科夫链模型定义工频电磁场状态转移矩阵,得到准确的监测结果。实验结果显示:所提方法的电场监测相对误差降低了21%、25%,磁场监测相对误差降低了0.24%、0.27%。Aiming at the large error of UHV transmission line electromagnetic monitoring based on previous methods,a power frequency electromagnetic field monitoring method based on Markov chain model is designed.Combining the UHV transmission line environment and the maximum conductor sag point,the line power frequency electromagnetic field measurement points are arranged,and then the transfinite learning machine network model is used to design the sensor data correction technology to remove the interference information in the data.The finite length analog line charge method and Biot Sava law are introduced to calculate the three-dimensional electromagnetic field distribution of the transmission line.Finally,the Markov chain model is used to define the power frequency electromagnetic field state transfer matrix,get accurate monitoring results.The experimental results show that the relative error of electric field monitoring is reduced by 21%and 25%,and the relative error of magnetic field monitoring is reduced by 0.24%and 0.27%.

关 键 词：马尔科夫链模型 输电线路 工频电磁场 监测方法 场强修正 悬链线 

分 类 号：TP391[自动化与计算机技术—计算机应用技术] TM15[自动化与计算机技术—计算机科学与技术]