With the development of digitization and intelligence, higher requirements have been put forward for the operation and maintenance of electrical systems in nuclear power plants. At present, the electrical operation and maintenance of nuclear power plants are carried out through regular inspections by maintenance personnel to record data and check the operation of equipment. The electrical equipment in nuclear power plants is numerous, requiring a large amount of personnel work, which is time-consuming and prone to errors. The current operation and maintenance mode has low efficiency, and there is an urgent need for new operation and maintenance methods to improve operation and maintenance efficiency and reduce operation and maintenance costs. In response to the above issues, from the perspective of electrical design, based on the analysis of the design and operation and maintenance status of the electrical system in nuclear power plants, an overall architecture scheme for intelligent operation and maintenance of the electrical system is proposed. Through the electrical configuration scheme of intelligent device layer, communication management layer, and intelligent management platform, the operation and maintenance of nuclear power plants have been optimized, achieving intelligent operation and maintenance.