含抽水蓄能电站的高比例新能源发电系统多时间尺度调度模型
A Multi-Time Scale Scheduling Model for Power Generation Systems with a High Proportion of New Energy Including Pumped Storage Power Stations
顾慧杰 1周华锋 1彭超逸 1胡亚平 1赵心怡 2谢俊 2施雄华3
作者信息
- 1. 中国南方电网电力调度控制中心,广州 510623
- 2. 河海大学能源与电气学院,南京 211100
- 3. 南京南瑞继保电气有限公司,南京 211102
- 折叠
摘要
针对高比例新能源接入电网的消纳问题,提出一种含抽水蓄能电站的高比例新能源发电系统多时间尺度协调调度模型.依据风电、光伏、负荷功率预测精度随时间尺度缩短逐级提高的特点,以系统总运行成本最小为目标构建日前24 h、日内1 h、实时15 min三阶段协调调度模型.通过多时间尺度的协调配合,逐级修正发电计划,实现抽蓄、风电、光伏、火电出力良好跟踪负荷.基于CPLEX商业优化软件,利用混合整数线性规划法对含6台抽蓄机组的风光火抽蓄互补发电系统展开仿真分析.结果表明:抽水蓄能机组可发挥其负荷响应时间短、功率调节速度快的优势,减轻火电机组调节负担,有效缓解火电机组调节压力.通过多时间尺度的协调配合,可减少弃风弃光,提高新能源消纳水平.
Abstract
Aimed at the accommodation problem of a high proportion of new energy connected to the power grid,a multi-time scale coordinated scheduling model for power generation systems with a high proportion of new energy including pumped storage power stations is proposed.Based on the characteristics that the prediction accuracy of wind,photovoltaic(PV)and load power improves step by step with the shortening of time scales,a three-phase coordinated scheduling model is constructed with the goal of minimizing the total operating cost of the system,which includes a 24-hour day-ahead plan,a 1-hour intraday plan and a 15-minute real-time plan.Through the coordination of multiple time scales,the power generation plan is revised step by step,which ensures that the pumped storage power,the wind power,the PV power,and the thermal power output track the load well.Based on the CPLEX commercial optimization software,a mixed integer linear programming method is used to simulate and analyze the wind-PV-thermal-pumped storage complementary power generation system with six pumped storage units.The results show that the pumped storage units can take advantage of short load response time and fast power regulation speed to reduce the regulatory burden of thermal power units and relieve their regulatory pressure effectively.The coordination and cooperation on multiple time scales reduces wind and PV power curtailment and improves new energy accommodation level.
关键词
抽水蓄能电站/高比例新能源发电系统/多时间尺度协调调度/新能源消纳/预测精度/混合整数线性规划Key words
pumped storage power station/power generation system with a high proportion of new energy/multi-time scale coordinated scheduling/new energy accommodation/prediction accuracy/mixed integer linear programming引用本文复制引用
出版年
2024
NETL
NSTL
万方数据