为提升煤电运行灵活性以支撑高比例新能源消纳，本文聚焦区域煤电灵活性改造的协同规划问题。针对现有研究通常将抽凝机组锅炉侧深度调峰改造与热电解耦技术分别优化，且大多研究未考虑电网结构约束的影响，本文首先系统分析了锅炉侧深度调峰改造、低压缸零出力改造、电锅炉及储热装置四种技术路线的运行特性，进而构建了计及电网拓扑结构的混合整数线性规划模型，以系统总成本最小化为目标，实现多种技术路径的协同配置与运行优化。基于改进的 IEEE 14 节点系统的案例研究表明，统筹优化上述技术后，系统总成本降低 5.98%，弃风弃光率下降 15.68%。结果验证了所提协同规划方案能有效融合不同技术间的互补优势，显著降低系统成本、缓解新能源消纳压力，同时也揭示了煤电灵活性调节能力受其在电网中所处节点位置的影响。

To enhance the operational flexibility of coal-fired power plants in supporting high penetration of renewable energy, this paper focuses on the coordinated planning of regional coal-fired power flexibility upgrades. Existing research typically optimizes deep peak-shaving modifications on the boiler side of condensing units and thermal-electric decoupling technologies separately, with most studies neglecting the impact of grid structural constraints. this paper first systematically analyses the operational characteristics of four technical approaches: deep peak shaving modifications on the boiler side, zero-output modifications for low-pressure cylinders, electric boilers, and thermal storage devices. Subsequently, a mixed-integer linear programming model incorporating grid topology is constructed. This model aims to minimize total system costs, enabling the coordinated configuration and operational optimization of multiple technical pathways. A case study based on an enhanced IEEE 14-node