Abstract: Nowadays, with the extension development of the smart distribution network, it has new characteristics such as large quantities of distributed power access and support for users demand interaction, so operation and management of smart distribution network becomes more complex. Meanwhile, big data technology is booming and has an important guiding role in improving the operation and management level of smart distribution network. Therefore, it is necessary to study the smart distribution network operation and management methods of applying big data technology. This paper first discusses the application value of big data technology in smart distribution network, then systematically analyzes these potential application values from four aspects: data preprocessing, distribution network loss management, state estimation and smart distribution network health degree evaluation. Finally, this paper expounds the network security problems and the corresponding protection measures in the context of big data. The application scenarios studied in this paper are novel and effective, and the research results are helpful for building smart distribution network operation and management system based on big data technique.

Key words: big data, smart distribution network, operation and management, health degree evaluation, network security