Abstract With the integration of large-scale renewable energy including wind power into the power grid, efficient flexible resources are required for wind power accommodation. The combined-cycle gas turbines (CCGTs) are widely used in the power system with flexible operation characteristics, which leads to enhanced interdependencies between the power grid and the natural gas network. In this paper, a unit commitment (UC) model with natural gas transmission constraints and reserve scheduling considering the flexibility of CCGT with quick startup-shutdown and flexible operation characteristics is proposed, to reduce wind power curtailment and high startup and shutdown cost of conventional generation units in the power system. Considering the complex operating conditions of CCGT and the non-convexity of Weymouth equation in natural gas network, this paper adopts an improved mode-based model (MBM) for modeling of CCGT and converts the Weymouth equation into a second-order cone relaxation (SOCR) formulation with penalty term through a concave-convex process (CCP) to make the relaxation tight, thus transforming the UC model into an iterative mixed-integer second-order cone programming (MISOCP) problem to be efficiently solved. The effectiveness of the proposed model on reducing wind power curtailment and startup-shutdown cost is demonstrated through case studies.

中文翻译：

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在天然气输送约束和储备调度的电力系统机组配置中利用联合循环燃气轮机的灵活性

摘要 随着包括风电在内的大规模可再生能源并网，风电消纳需要高效灵活的资源。联合循环燃气轮机（CCGT）广泛应用于电力系统，具有灵活的运行特点，导致电网与天然气网络之间的相互依赖性增强。【摘要】：为了降低风电限电和常规发电高启停成本,提出了一种考虑CCGT灵活性、启停快、运行灵活的天然气输送约束和储量调度的机组承诺(UC)模型。电力系统中的单位。考虑CCGT运行条件复杂，天然气管网Weymouth方程不凸，本文采用改进的基于模式的模型 (MBM) 对 CCGT 进行建模，并通过凹凸过程 (CCP) 将 Weymouth 方程转换为带有惩罚项的二阶锥弛豫 (SOCR) 公式，使弛豫变得紧密，从而将 UC 模型转换为迭代混合整数二阶锥规划 (MISOCP) 问题，以便有效解决。通过案例研究证明了所提出的模型在减少风电限电和启动-关闭成本方面的有效性。从而将 UC 模型转换为迭代混合整数二阶锥规划 (MISOCP) 问题，以便有效解决。通过案例研究证明了所提出的模型在减少风电限电和启动-关闭成本方面的有效性。从而将 UC 模型转换为迭代混合整数二阶锥规划 (MISOCP) 问题，以便有效解决。通过案例研究证明了所提出的模型在减少风电限电和启动-关闭成本方面的有效性。