南水北调东线一期工程是国家水网主骨架大动脉的重要组成部分，开展联合调度有助于缓解我国水资源时空分布不均问题、提高区域供水安全水平。本文着眼充分发挥多工程系统的协同效应以破解单一工程调蓄能力不足的瓶颈，剖析了南水北调东线一期工程补偿调度的基本背景，合理概化了工程系统并构建了补偿调度模型；对比分析了仅用长江水、水量补偿、库容补偿、水量和库容联合补偿4类调度方式的受水区缺水量及调水成本，揭示了不同水文年型下水量补偿与库容补偿特性。研究结果表明，来水越丰，水量补偿作用越显著；来水越枯，库容补偿作用越显著；水量补偿、水量和库容联合补偿的平均提水电费低且缺水量小；与水量补偿调度相比，联合补偿在丰水年、平水年、枯水年每减少1×10⁸ m³缺水量，提水电费分别增加1763万元、1425万元、901万元；丰水年采用水量补偿调度、枯水年采用水量和库容联合补偿调度，是经济性更优的选择。相关结论可为国家水网骨干工程联合调度提供基础认识，为优化水资源配置格局提供工程案例。

The first phase of the South-to-North Water Diversion Project's Eastern Route (hereinafter referred to as the first phase project) is an important component of China's national water network, and the joint scheduling of the first phase project can address the spatiotemporal distribution discrepancy of water resources in China, thereby ensuring regional water security. This study aims to leverage the synergy of multiple engineering systems to overcome the bottleneck of insufficient regulation and storage capacities in single projects. It analyzes the basic background regarding the compensation scheduling of the first phase project, generalizes the engineering system, and establishes a compensation scheduling model. Subsequently, the study compares and analyzes the water shortages and electricity fees for water transfer in water-receiving areas under four scheduling modes: using only water from the Yangtze River, water compensation, storage compensation, and water‒storage combined compensation. It also reveals the laws of water compensation and storage compensation in different hydrologic years. The results indicate that the wetter the hydrologic year is, the more significant the effects of using water compensation; the drier the hydrologic year is, the more significant the effects of using storage compensation. Water compensation as well as water‒storage combined compensation have lower average electricity fees and smaller water shortages. Compared with water compensation, for every 1.0 × 10⁸ m³ of water shortage reduced in the high-, normal-, and low-flow years, combined compensation increases average electricity fees by 17.63 million CNY, 14.25 million CNY, and 9.01 million CNY, respectively. Therefore, it is more economical to adopt water compensation scheduling in wet years and water‒storage combined compensation scheduling in dry years. The research findings provide fundamental understanding for the joint scheduling of backbone projects in China's national water network, and offer engineering examples for optimizing its water resource allocation pattern.