Experimental End-To-End Delay Analysis of LTE Cat-M With High-Rate Synchrophasor Communications
Experimental End-To-End Delay Analysis of LTE Cat-M With High-Rate Synchrophasor Communications
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DOI：
10.1109/jiot.2023.3282268
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发表时间：
2022-07
影响因子：
10.6
通讯作者：
Sureel Shah;Sayan Koley;Filippo Malandra
中科院分区：
文献类型：
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作者：
Sureel Shah;Sayan Koley;Filippo Malandra
微相量测量单元（\mu $ -PMUs）是一种允许高精度监测配电网电压和电流的设备，从而实现了广泛的智能电网应用，如状态估计、保护和控制。这些设备需要将电压和电流的同步测量值（也称为同步相量）以高速率传输到电力公用事业控制中心。使用无线网络，如LTE，来传输同步数据正变得越来越流行。然而，同步相量包含在小帧中，使用低功耗蜂窝解决方案（如LTE cat-M）将更有效。在这项工作中，我们对能够通过商用LTE cat-M网络连接的$\mu $ -PMU的部署进行了实验研究。部署的$\mu $ -PMU是用现成的硬件（如Arduino微控制器）构建的，用于以1到80帧/秒的可变速率传输符合IEEE C37.118.2标准的数据。详细的网络性能分析显示了LTE cat-M支持$\mu $ -PMU通信的适用性。给出了延时、抖动等性能指标的实验结果。详细分析了LTE cat-M接入机制对帧到达时间分布的影响。
Micro-phasor measurement units $(\mu $ -PMUs) are devices that permit monitoring voltage and current in the distribution grid with high accuracy, thus enabling a wide range of smart grid applications, such as state estimation, protection, and control. These devices need to transmit the synchronous measurements of voltage and current, also known as synchrophasors, to the power utility control center at a high rate. The use of wireless networks, such as LTE, to transmit synchrophasor data is becoming increasingly popular. However, synchrophasors are included in small frames and it would be more efficient to use low-power cellular solutions such as LTE cat-M. In this work, we present experimental research on the deployment of a $\mu $ -PMU with the ability to connect over a commercial LTE cat-M network. The deployed $\mu $ -PMU is built with off-the-shelf hardware, such as Arduino microcontrollers, and is used to transmit data—compliant with the IEEE C37.118.2 standard—at a variable rate from 1 to 80 frames/s. A detailed network performance analysis is carried out to show the suitability of LTE cat-M to support $\mu $ -PMU communications. Experimental results on performance indicators, such as delay and jitter, are reported. The effect of the LTE cat-M access mechanism on the time distribution of frame arrivals is also thoroughly analyzed.