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) communication, industrial Ethernet, passive optical networks and wireless communication,each of which have different advantages. Due to the complex application scenarios, massive sampling points and high transmission reliability requirements, a single communication method cannot fully meet the communication requirements 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 heterogeneous 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 derivation to prove the stability and solvability of the scheduling system in theory. Finally, the simulation results show that under the condition of satisfying the delay requirement, our proposed framework can optimally allocate the wireless communication resource and maximize the throughput of the uplink transmission system.

智能电网是一个集成了先进电力设备，通信技术和控制技术的能源网络。它可以同时在电网的所有组件之间传输双向电源和数据。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，它们各自具有不同的优势。由于应用场景复杂，采样点繁多，传输可靠性要求高，单一的通信方式无法完全满足智能电网的通信需求，因此需要异构通信方式。此外，随着蜂窝技术的发展，基于长期演进（LTE）的标准已被视为一种有前途的技术，可以满足智能电网中各种运营的严格要求。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，根据系统时延和可靠性的要求，提出一种上行调度传输方法，以优化的吞吐量对数据进行采样。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，在满足时延要求的条件下，