智通财经网·2025-11-10 03:43Core Insights - The integration model of "source-network-load-storage" is accelerating implementation across the country, driven by national energy structure transformation and carbon neutrality goals [1] - The Hunan Zhongran Energy Co., Ltd. project in Hengshan Science City serves as a typical example of regional comprehensive energy service models due to its systematic layout and actual effectiveness in various aspects of the "source-network-load-storage" integration [1] Group 1: Project Overview - Hunan Zhongran is the sole distribution and sales electricity operator in the 26.5 square kilometer pilot area of Hengshan Science City, holding exclusive rights for electricity and centralized heating [3] - The company is responsible for investment, construction, and operation of the incremental distribution network, extending to comprehensive energy services including solar, storage, charging facilities, and distributed gas energy systems [3] - The existing infrastructure includes one 110kV substation with a capacity of 63MVA, 5.74 kilometers of 110kV overhead lines, and a total distribution transformer capacity of 99,450 kVA, supporting diverse load demands in the region [3] Group 2: Energy Storage and Economic Impact - The energy storage project associated with the 110kV substation was officially put into operation last year, achieving a significant breakthrough in the storage aspect [4] - The system operates on a "two charge, two discharge" strategy with an overall efficiency of approximately 90%, saving an estimated 3.3 million yuan in annual electricity costs [4] - The project enhances the grid's ability to manage peak and off-peak loads, improving local grid stability and reliability while facilitating the integration of renewable energy [4][5] Group 3: System Benefits and Future Prospects - The "source-network-load-storage" integration model significantly improves the grid's capacity to accept intermittent power sources like distributed solar, reducing voltage fluctuations and overload risks [5] - The economic benefits include optimized energy dispatch strategies that balance load management and control overall electricity costs [5] - The model enhances energy security by increasing system resilience and reducing reliance on single energy sources, while also promoting smart grid development through digital technologies [7] - The project contributes to environmental benefits by reducing fossil fuel consumption and greenhouse gas emissions, supporting green and low-carbon development [7] - The successful implementation of this model in Hengshan Science City provides a reference for similar energy system constructions in other industrial parks and new urban development areas, with potential for broader application as costs for solar and storage decrease [7]