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State Grid Jiaxing Power Supply Company has carried out a series of innovative practices in distribution network, mainly in the following aspects:Establishment of Digital - Twin Task Force: It has been approved to establish the distribution digital - twin task force under the power equipment digital - twin working group of the IEEE PES Transmission and Distribution Satellite Committee (China). Focusing on theoretical research in multiple fields, such as the integration of polymorphic distribution network planning, construction and operation, it takes the lead in formulating IEEE and other technical standards, promoting the digitalization and intelligence of the distribution network. The task force studies the application of digital - twin technology in the whole life cycle of distribution networks, realizes real - time equipment status monitoring and accurate fault location through high - precision simulation models, and improves the efficiency and reliability of grid operation.Application of Automatic Planning System: Since October 2024, the company has piloted the full - scale use of the distribution network automatic planning system in the grid - based planning of the distribution network in Jiashan, Zhejiang. The system has been popularized and applied in 7 cities in Zhejiang. It innovates the digital management mode of distribution network planning, integrates the power grid data model with the local urban construction "multi - planning integration" data model, shortens the planning time from 3 - 4 months to 1 - 2 weeks, and improves the planning project execution rate and reduces the planning feasibility study deviation rate.Innovative Investment Method: Aiming at the problem that the current distribution network investment method is not adaptable to the new elements of the new power system, it proposes a distribution network investment method based on the new power system. By constructing a source - grid - load - storage - side investment calculation model, it can accurately calculate the investment in the new power system, providing scientific guidance for realizing the precise investment in the distribution network.Research and Application of New Technologies by Young Employees: Guided by the company, young employees combine grass - roots power production work with cutting - edge technologies such as artificial intelligence. For example, the "Digital - Image Multi - source Information Fusion Technology" developed by the "Digital Intelligence Design" Youth Innovation Studio reduces the on - site investigation time of line designers by 50% and the path drawing time by 25%. The Source - Grid - Load - Storage Integration Youth Commando has completed a series of county - level new - type power system scenario construction, and建成了全国首个四端互联的光储充直流配电网, and formed 15 practical innovation achievements.Application of Automatic Feeder Automation Technology: The company has applied the automatic feeder automation (FA) function to the Jiashan - Nanhu 10 - kV Yunya tie - line, the first cross - regional distribution network interconnection line in China. By installing 11 quantum intelligent switches, it realizes the full - self - healing construction of the distribution automation of this line, and can monitor the cross - regional interconnection line in real - time, quickly locate the fault area and automatically restore the power supply of the non - fault area.Innovative Operation and Maintenance Management Mode: During the peak summer power consumption period, the Binhai Power Supply Branch of State Grid Jiaxing Power Supply Company adopts the new operation mode of "centralized tackling + coordinated operation", realizes the unified scheduling and optimal allocation of live - working resources in the whole region, installs new quantum switches, improves the power - bearing capacity of the power grid, and realizes the "second - level self - healing" function, which shortens the power supply restoration time of non - fault sections to within 24 seconds.
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