[25]李同智.灵活互动智能用电的技术内 [26]中华人民共和国国家能源局.配电网 涵及发展方向.电力系统自动化，建设改造行动计划(2015一2020年)Z 2012(2):11-17. 2015-07-05 An Optimal Design of Monitoring System for Power Distribution Networks XU Shuangdie Instructor:LIU Dong Shanghai Jiao Tong University,Shanghai 200240,China) Abstract:This article introduces the current situation and problems of the data collecting and monitoring system for domestic power distribution networks in China.Under the knowledge of weaknesses in the current monitoring system such as lack of function variety,insufficient intrgration,incapability in mutual-operation and real-time features,an optimal design of monitoring system for power distribution networks is proposed.The design suggests the standardization of monitoring devices,communication protocols and managing systems.The design contains four layers,device and terminal layer,communication network layer,data processing and integration layer,and system maintainence and management layer Key words:power distribution network,monitoring system,information integration, communication[25]李同智. 灵活互动智能用电的技术内 涵 及 发 展 方 向 [J]. 电 力 系 统 自 动 化 ， 2012(2):11-17. [26]中华人民共和国国家能源局. 配电网 建 设 改 造 行 动 计 划 (2015—2020 年 ) [Z]. 2015-07-05 An Optimal Design of Monitoring System for Power Distribution Networks XU Shuangdie Instructor: LIU Dong （ Shanghai Jiao Tong University，Shanghai 200240，China） Abstract：This article introduces the current situation and problems of the data collecting and monitoring system for domestic power distribution networks in China. Under the knowledge of weaknesses in the current monitoring system such as lack of function variety, insufficient intrgration, incapability in mutual- operation and real-time features, an optimal design of monitoring system for power distribution networks is proposed. The design suggests the standardization of monitoring devices, communication protocols and managing systems. The design contains four layers, device and terminal layer, communication network layer, data processing and integration layer, and system maintainence and management layer. Key words：power distribution network, monitoring system, information integration, communication