基于电场分析的移动式闪电测距方法
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1.成都信息工程大学;2.中国石油安全环保技术研究院大连分院

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四川省科技计划重点研发项目(2022YFG0234),中国石油天然所集团“油气设施雷电地电位反击致灾机制及接地网智能故障诊断技术研究”(2021DJ6804)项目资助。


Mobile lightning ranging method based on electric field analysis
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    摘要:

    闪电会对汽车、火车、飞行器等交通工具造成干扰或危害,测量闪电与移动中的交通工具的距离,对于保障交通工具及其内部人员的安全具有积极意义。基于移动交通工具的运动场景与闪电产生的电场辐射特性,建立场强比值法(E-E法)来展开闪电距离测量的研究,探索E-E法进行闪电测距的可行性。首先通过构建闪电电场辐射场景,建立E-E法模型,利用仿真分析比较线性插值法和牛顿拉夫逊法在E-E法模型求解时的效率;其次分析移动情况下的多普勒效应对E-E法测量误差的影响,最后搭建应用平台完成对算法可行性的验证。经过分析,牛顿法在求解E-E法模型距离值时,牛顿法在线性插值法的基础上提高了约35%的效率;对于接收频率低于10kHz的闪电信号时,测量误差较大,高频则不会影响测量结果;在多普勒效应下,采用E-E法测量时20kHz以上的接收信号时,多普勒效应基本不会影响到测量结果;应用平台测得的距离值与理论距离值存在5%左右的误差,说明方法能够有效测量闪电距离。此外,这类测量误差可以通过对电路进行补偿以及对数据进行最小二乘法拟合的方法来减小。

    Abstract:

    Lightning can cause interference or harm to vehicles such as cars, trains, and flying machines, etc. Measuring the distance between lightning and moving vehicles is of positive significance for safeguarding the safety of the vehicles and the people inside them. Based on the motion scene of the moving transportation vehicle and the electric field radiation characteristics generated by lightning, Method of comparing electric field strength to electric field strength (E-E method) is established to carry out the study of lightning distance measurement and explore the feasibility of the E-E method for lightning ranging. Firstly, the E-E method is modeled by constructing the lightning electric field radiation scene, and the simulation analysis is used to compare the efficiency of the linear interpolation method and Newton's Raphson method in solving the E-E methodological model; secondly, the influence of the Doppler effect on the measurement error of the E-E method under the moving situation is analyzed, and finally, an application platform is constructed to complete the validation of the feasibility of the algorithm. After analyzing, Newton's method improves the efficiency by about 35% on the basis of linear interpolation when solving the distance value of the E-E methodological model; the measurement error is larger for the lightning signals with the reception frequency lower than 10 kHz, while the high frequency does not affect the measurement results; the Doppler effect basically does not affect the measurement results when the received signals of more than 20 kHz are measured by the E-E method under the Doppler effect; the distance measured by the application platform does not affect the measurement results; the distance measured by the application platform is not affected by the Doppler effect. results; the distance value measured by the application platform has an error of about 5% with the theoretical distance value, which indicates that the method can effectively measure the lightning distance. In addition, this kind of measurement error can be reduced by compensating the circuit and fitting the data by the least squares method.

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  • 收稿日期:2024-01-27
  • 最后修改日期:2025-01-08
  • 录用日期:2025-01-24
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