0引言在智能电网建设过程中,配用电网规模不断扩大。一方面,分布式新能源大量接入,配电设备大幅度增加,用户对供电可靠性和电能质量的要求也相应提高;另一方面,智能电网与用户的互动化需求使得用户对电网的需求响应能力要求更高。这就需要电力部门不断地对传统配电网进行改造,并提高其自动化水平,满足广大用户的用电需求。而通信系统是智能配电与智能用电的关键技术之一,通信系统的完善程度在很大程度上决定了配用电系统的优劣,高速、实时、双向、可靠的通信是配用电网通信系 0 Introduction In the process of building smart grid, with the expansion of grid size. On the one hand, a large number of distributed new energy access, distribution equipment increased substantially, the user reliability and power quality of the power supply requirements also increased accordingly; the other hand, the interaction between smart grid and user demand makes the user demand for power grid Response requirements more demanding. This requires the power sector continue to transform the traditional distribution network and improve its level of automation to meet the electricity needs of the vast number of users. The communication system is one of the key technologies of smart distribution and intelligent electricity consumption. The improvement of the communication system largely determines the advantages and disadvantages of the distribution system. High-speed, real-time, bidirectional and reliable communication is a combination of power distribution Network communication system