考虑调峰约束的风水火随机机组组合问题

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摘要为了协调优化风电、梯级水电、火电的发电调度,并克服下一调度周期的调峰难题,建立了考虑未来调度周期调峰约束的随机机组组合模型。针对风电的随机性,采用缩减后的场景进行模拟,并充分利用梯级水电和火电的调节能力,建立了各个场景下的风水火耦合的运行约束。针对下一调度周期的调峰问题,通过增加机组起停相关约束,使得系统能够满足未来调度周期高峰和低谷的调峰要求。随机机组组合数学模型是一个复杂的非线性优化模型,将其转换为线性混合整数规划模型后,利用CPLEX进行求解。算例仿真结果表明,优化得到的机组组合方案能够有效提升风水火发电系统短期优化调度的前瞻性并可兼顾各个场景下机组出力的可行性。

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	葛晓琳
	张粒子

关键词 ：风电, 水电, 火电, 机组组合, 调峰, 随机

Abstract：With the purpose of coordinative optimization of wind-hydro-thermal scheduling and overcoming the peak regulation issue in the future scheduling period, the stochastic unit commitment model with the peak and valley regulation constraints in next scheduling period is proposed. Firstly, in respond to the randomness of wind power, the reduced scenarios are used to simulate wind power, and the coupling operational constraints of wind, hydro, thermal power in each scenario are formulated to make full use of the regulation potential of cascade hydropower and thermal power. Secondly, for the peak regulation issue in next scheduling period, the constraints about unit start and stop status are introduced to satisfy the peak regulation demand in the future scheduling period. Finally, the proposed model stochastic unit commitment, which is a complicated nonlinear model, is transformed to mixed integer linear programming model and solved by CPLEX software. Simulated results show that the optimized unit commitment can effectively enhance the forward-looking of short-term wind-hydro- thermal optimal scheduling, and ensure the output feasibility of each unit type under all scenarios.

Key words： Wind power hydropower thermal power unit commitment peak regulation stochastic

收稿日期: 2013-10-13 出版日期: 2014-11-05

PACS:

TM73

基金资助:国家自然科学基金资助项目（51277071）

作者简介: 葛晓琳女,1988年生,博士,讲师,研究方向为电力优化调度、风水火电联合优化运行等。张粒子女,1963年生,教授,博士生导师,研究方向为电力系统经济调度、电力市场和电价理论及其应用等。

引用本文:

葛晓琳, 张粒子. 考虑调峰约束的风水火随机机组组合问题[J]. 电工技术学报, 2014, 29(10): 222-230. Ge Xiaolin, Zhang Lizi. Wind-Hydro-Thermal Stochastic Unit Commitment Problem Considering the Peak Regulation Constraints. Transactions of China Electrotechnical Society, 2014, 29(10): 222-230.

链接本文:

http://dgjsxb.ces-transaction.com/CN/Y2014/V29/I10/222

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