面向电力应用场景的5G信道测量与路损模型修正

5G Channel Measurement and Pass Loss Model Correction for Power Application Scenario

传统公网5G信道模型一般针对城市、街区等场景进行建模,在变电站等电力工业场景中适应性不足。为支撑5G在电网的规模化应用,需要开展对特定电力场景的信道测量与建模以指导电力5G无线网络规划和系统级仿真。本文在500 kV变电站开展5G频段的实地信道测量,分析了时延功率谱、路径损耗等信道特性,并在此基础上提出了一种引入天线高度矫正因子的路损模型修正方法,以便更准确地对天线高度与路损之间的关系进行建模,同时对比分析与5G标准路损模型之间的差异。结果表明,该模型能更好地适应电力应用场景,可为通信性能评估提供参考与指导,并为电力通信设备的覆盖范围预测提供理论依据。

The traditional public network 5G channel model is generally modeled for scenarios such as cities and blocks,and has insufficient adaptability in power industry scenarios such as substations.In order to support the large-scale application of 5G in the power grid,it is necessary to carry out channel measurement and modeling for specific power scenarios to guide power 5G wireless network planning and system-level simulation.In this paper,field channel measurement of 5G frequency band was carried out in 500kV substation,and channel characteristics such as delay power spectrum and path loss were analyzed.On this basis,a path loss model correction method with antenna height correction factor was proposed to model the relationship between antenna height and path loss more accurately.At the same time,the difference between the standard road loss model and 5G is compared and analyzed.The results show that the model can better adapt to the electric power application scenario,provide reference and guidance for the evaluation of communication performance,and provide a theoretical basis for the coverage prediction of electric power communication equipment.