Method   Studied the experimental application effect of multi parameter sensor technology, such as switch cabinet partial discharge, transformer oil temperature,joint temperature,gas pressure,ambient temperature and humidity,smoke,water immersion and electrical remote signaling,studied the functional framework of intelligent gateway,edge Intelligent Computing and processing technology and application scenario,studied the technical requirements of deep integration design and interface standardization of primary and secondary equipment of distribution network. This paper studied the auxiliary decision-making technology of intelligent diagnosis and monitoring system of distribution network to meet the requirements of data access, data fusion, intelligent analysis, business collaboration,source end maintenance and data transmission in power system security zones for cross business requirements such as station end monitoring,operation and maintenance.

  Result   After the pilot, summary and refinement of a large number of demonstration projects such as distribution room and platform area in the past two years, the company's standard design and typical cost version V3.0 (intelligent distribution) based on the integration of intelligent technology and operation and maintenance strategy were formulated, and a new system architecture based on the South Grid cloud platform was constructed to realize the real-time perception, interconnection, edge computing optimization and prediction of equipment and objects.

  Conclusion   Unifying the relevant design standards of smart grid,comprehensively supporting the smart monitoring and monitoring technology scheme,fully adapting to the future development requirements of smart grid and digital grid, is of great significance for strengthening the smart inspection and maintenance, user side management, and further improving the construction and operation level of smart grid.