【摘要】 电力线通信(Power-Line Communication,PLC)已经逐渐成为许多智能电网系统中较为有效的通信方法。随着PLC技术的成熟与普及以及PLC网络的广播特性,通信安全问题成为PLC通信系统所面临的关键问题之一。在已有的文献中已经提出了较多技术来实现这一目标,大多数采用网络层的加密方式,但安全等级不够,直到提出物理层安全以及应用到PLC系统。由于电力信道的复杂性,计算复杂度较高,现有文献中没有给出闭合表达式,仅停留在仿真分析阶段。因此,与已有工作不同,采用新的数学方法给出精确的安全中断概率(Security Outage Probability,SOP)表达式,通过仿真验证了理论推导的正确性,且给出了不同参数对SOP的影响,可为PLC系统的安全提供参考。更多还原

【Abstract】 PLC(Power Line Communication) has gradually become a more effective communication method in many smart grid systems. In recent years, with the maturity and popularization of PLC technology, and the broadcast characteristics of PLC network, the communication security issue becomes one of the key issues faced by PLC communication system. In the existing literature, many technologies have been proposed to achieve this goal. Most of them use network layer encryption, but the security level is not enough until physical layer security is proposed and applied to PLC systems. Due to the complexity of power channel and the high computational complexity, the existing literature does not give a closed expression, and only stays in the simulation analysis stage. Therefore, different from the existing work, a new mathematical method is used to give an accurate expression of SOP(Security Outage Probability). The simulation verifies the correctness of the theoretical derivation and gives the influence of different parameters on the SOP, which can provide a reference for the security of PLC system.更多还原