配电网设备复杂多样，容易受到自然界的各种干扰，国内配电网的智能化建设刚刚起步，配电网的灾害监控、运行管理、故障诊断存在不足。研究了基于传感器网络的配电网保护通信技术，以实现电网灾害的在线监测与预警。通过支撑多任务的传感器节点阵列布置、网络体系的架构分级，采用图形化、可视化手段，对配电网进行全方位的监测。建立了可视化电网监测数据管理系统，能够针对数据进行检索、统计、计算处理，生成各类二次数据，便于有关人员对电网运行状态和趋势进行分析和决策。

The distribution network equipments are complicated and various and easily subjected to various interferences in nature. The intelligent distribution network has just started, so it has some insufficient in disaster monitoring, operation management and fault diagnosis. The communication technology for distribution network protection based on sensor network is investigated, in order to realize the online monitoring and early warning of power network disaster. Through the nodes array arrangement of multi-task sensor and the architecture classification of network system, the distribution network could be comprehensively monitored by using graphic and visualization. Finally, a visualization monitoring and data management system is presented for power network in this paper, which could implement data retrieval, statistics, calculation and treatment, generate secondary various data, as well as be useful for the analysis and decision making of the grid operation state and trend.