考虑电转气消纳水电的水-电-气系统低碳鲁棒优化调度

针对电力系统调节能力不足引起的汛期弃水问题以及负荷侧存在的不确定性问题，本文构建了水-电-气多能源系统协同低碳鲁棒优化调度模型，并给出模型的求解方法。所提模型将电力系统中的水电机组、燃气机组、火电机组同水电系统、天然气系统进行协同建模，考虑电转气技术将电力系统无法消纳的水电转化为天然气，存储至天然气系统中，对水-电-气多能源系统联合运行时消纳水电的能力进行分析。针对模型中的非线性约束，基于分段线性化法和泰勒级数展开方法将模型转化为混合整数线性模型；针对模型中的不确定性参数，运用列与约束生成方法将其转化为主-子问题框架，采用Gurobi求解器进行快速求解。采用改进的6节点电网-7节点气网系统进行算例分析，结果验证了所提模型能够充分利用不同能源系统间的互补特性提高电力系统的调节能力，促进水电的消纳，降低电力系统的运行成本并实现电力系统的低碳运行。

Day-Ahead Coordinated Low Carbon Robust Scheduling of Hydro-Electricity-Natural Gas System Considering Power-to-Gas to Accommodate Excessive Hydro Generation

Aiming at the surplus water problem caused by insufficient regulation capacity of power system and uncertainty on the load side, a multi-energy coordinated low-carbon robust scheduling model of hydro-electricity-natural gas system was proposed and solved in this paper. The nonlinear constraint in the proposed model is transformed into a mixed-integer linear model based on piecewise linearization method and Taylor series expansion method. For the uncertain parameters in the model, the column and constraint generation method are used to further transform it into a master-subproblem framework, consequently solved by GUROBI solver. Numerical results of an improved 6-bus electricity/7-node gas system show that the proposed model can make full use of the complementary characteristics of different energy systems to improve the regulation capacity of the power system and promote the consumption of hydro power, as well as reduce the operation cost and achieve low-carbon operation of power system.