Smart grid is an energy network that integrates advanced power equipment, communication technology and control technology. It can transmit two-way power and data among all components of the grid at the same time. The existing smart grid communication technologies include power line carrier (PLC) com-munication, industrial Ethernet, passive optical networks and wireless communi-cation, each of which have different advantages. Due to the complex application scenarios, massive sampling points and high transmission reliability require-ments, a single communication method cannot fully meet the communication re-quirements of smart grid, and heterogeneous communication modes are required. In addition, with the development of cellular technology, long term evolution (LTE)-based standards have been identified as a promising technology that can meet the strict requirements of various operations in smart grid. In this paper, we analyze the advantages and disadvantages of PLC and LTE communication, and design a network framework for PLC and LTE communication uplink heteroge-neous communication in smart grid. Then, we propose an uplink scheduling transmission method for sampling data with optimized throughput according to the requirements of system delay and reliability. Then, we use the formula deri-vation to prove the stability and solvability of the scheduling system in theory. Finally, the simulation results show that under the condition of satisfying the de-lay requirement, our proposed framework can optimally allocate the wireless communication resource and maximize the throughput of the uplink transmission system. Keywords: smart grid, heterogeneous communication, optimized throughput.

中文翻译：

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用于延迟感知智能电网应用的异构 PLC 和 LTE 通信中的吞吐量优化上行链路调度

智能电网是一种集先进电力设备、通信技术和控制技术于一体的能源网络。它可以同时在电网的所有组件之间传输双向电力和数据。现有的智能电网通信技术包括电力线载波（PLC）通信、工业以太网、无源光网络和无线通信，每种技术都有不同的优势。由于应用场景复杂、采样点多、传输可靠性要求高，单一的通信方式不能完全满足智能电网的通信需求，需要异构通信方式。此外，随着蜂窝技术的发展，基于长期演进 (LTE) 的标准已被确定为一种有前途的技术，可以满足智能电网中各种操作的严格要求。本文分析了PLC与LTE通信的优缺点，设计了智能电网中PLC与LTE通信上行异构通信的网络框架。然后，根据系统延迟和可靠性的要求，提出了一种具有优化吞吐量的采样数据的上行调度传输方法。然后，我们使用公式推导从理论上证明了调度系统的稳定性和可解性。最后，仿真结果表明，在满足延迟要求的条件下，我们提出的框架可以优化分配无线通信资源并最大化上行传输系统的吞吐量。关键词：智能电网，异构通信，优化吞吐量。