The thesis is based on the premise of the technological change of digital substations. Four key points in digital substation. On the basis of technology, the "smart" characteristics of smart substations in the smart grid system are proposed and the functional architecture of smart substations is built, which reflects the informatization, digitalization, automation and interaction of smart substations from multiple angles. The current problems in the research and construction of smart substations are put forward, and the resulting research topics are analysed. Aiming at the development trend of intelligence and integration of various equipment in substations, a new system integration architecture design concept is proposed, and the specific architecture and networking methods of smart substations are elaborated.

The paper analyses the relevant elements of enterprise technical services in combination with the relevant knowledge service requirements of enterprise technology management. On this basis, based on enterprise information extraction technology, enterprise knowledge reasoning technology, machine learning technology, etc., it constructs an enterprise technology service model of knowledge graph. The model is divided into five levels: data acquisition layer, data processing layer, technology fusion layer, technology discovery layer, and technology application layer. The knowledge graph is integrated into the enterprise technology service platform to visualize the organizational form of technology management, which makes the enterprise technology service platform more relevant, and the enterprise business solutions are more intelligent and personalized. The research results obtained in the thesis promote the in-depth and universal development of the enterprise technical service model theory, and provide practical reference for improving the enterprise technical service level.

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This article analyzes the current situation and existing problems of the regional power communication network based on the theory of power communication technology, and then realizes the optimization design of the power communication integrated network system, including planning goals, communication cables, power communication transmission network and communication business network construction, and finally comprehensive Analyse the effect of the optimization design of the power communication integrated network system. Through the test of the power communication integrated network system, it is shown that the optimized network system can effectively meet the requirements of the unified construction of the prefectures and counties, and can also improve the reliability of the regional data network and the disaster tolerance system of the existing data network Demand to improve the stability of the system during operation.

The rapid development of society has made the production and living requirements of electrical energy supply higher and higher. Large-scale data collection and analysis of people’s lives and social production, and making corresponding judgments based on the results, are of great significance for optimizing power planning, saving energy and reducing emissions, facilitating residents’ lives, and coordinating social production. State Grid Co., Ltd. proposes to build “three types of two networks”, in which the ubiquitous power Internet of Things shoulders the existing power grid and further communicates the tasks of the user side and the generation, transmission and distribution side. In terms of function, the ubiquitous power IoT can be basically divided into four structures: perception layer, network layer, node centre and dispatch layer. According to the role of each structure, the development and construction are targeted. The system coordinates the construction of the ubiquitous power Internet of Things based on the overall structure, so that things are connected and characters interact, and a shared energy interconnection ecosystem is built.