考虑动态频率约束的多能源电力系统日前-日内优化调度

李杨; 孙斌; 吴峰; 洪飞龙; 史林军; 林克曼

doi:10.19912/j.0254-0096.tynxb.2023-0681

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太阳能学报 ›› 2024, Vol. 45 ›› Issue (2) : 406-415. DOI: 10.19912/j.0254-0096.tynxb.2023-0681

考虑动态频率约束的多能源电力系统日前-日内优化调度

李杨¹, 孙斌², 吴峰¹, 洪飞龙¹, 史林军¹, 林克曼¹

作者信息 +

DAY-AHEAD AND INTRA-DAY OPTIMAL SCHEDULING OF MULTI-ENERGY POWER SYSTEMS CONSIDERING DYNAMIC FREQUENCY CONSTRAINTS

Li Yang¹, Sun Bin², Wu Feng¹, Hong Feilong¹, Shi Linjun¹, Lin Keman¹

Author information +

文章历史 +

摘要

提出考虑系统动态频率约束的含风电-电池储能-抽蓄电力系统协调优化调度策略。首先,建立含风电机组、电池储能和抽水蓄能的电力系统频率响应模型,并对系统调频响应过程进行分段线性化处理,降低计算的复杂度。然后,根据各机组的爬坡速度、启停约束、功率跟踪能力等因素的差异,建立日前-日内协调的多时间尺度优化调度模型。日前阶段制定考虑动态频率约束的火电机组和抽水蓄能的机组启停和出力计划;日内阶段优化电池储能的充放电状态计划,并调整火电和抽蓄的出力计划,促进风电消纳。最后,在含风电、变速抽蓄和电池储能的改进IEEE-39节点系统中进行算例分析,结果证明所提方法能提高系统频率稳定性,减少弃风量,兼顾电力系统经济调度和频率稳定目标。

Abstract

A coordinated optimal dispatch strategy for power system with wind power-pumped storage-battery storage is proposed considering dynamic frequency constraints. Firstly, the frequency response model of the power system including wind turbine, pumped storage units, and battery energy storage is established, the frequency regulation response process is approximated with piecewise linearization method to reduce the computational complexity. Secondly, considering ramping rates, start-stop constraints, power tracking ability of different regulation sources, a multi-time scale coordinated optimization framework including day-ahead stage and intra-day stage is established. The start-up and shutdown and output plans of thermal power units and pumped storage units considering dynamic frequency constraints are formulated in the day-ahead stage. In the intra-day dispatching stage, the charge and discharge state plan of battery energy storage is formulated, and the output plan of all units is adjusted to balance the power deviation to promote the consumption of wind power. Finally, a case study is conducted in a modified IEEE-39 node system to demonstrate the feasibility and effectiveness of the proposed model. The results show that the proposed method can improve the frequency stability of the system, promote the wind power accommodation, and give consideration to both power system economics and frequency stability.

导出引用

李杨, 孙斌, 吴峰, 洪飞龙, 史林军, 林克曼. 考虑动态频率约束的多能源电力系统日前-日内优化调度[J]. 太阳能学报. 2024, 45(2): 406-415 https://doi.org/10.19912/j.0254-0096.tynxb.2023-0681

Li Yang, Sun Bin, Wu Feng, Hong Feilong, Shi Linjun, Lin Keman. DAY-AHEAD AND INTRA-DAY OPTIMAL SCHEDULING OF MULTI-ENERGY POWER SYSTEMS CONSIDERING DYNAMIC FREQUENCY CONSTRAINTS[J]. Acta Energiae Solaris Sinica. 2024, 45(2): 406-415 https://doi.org/10.19912/j.0254-0096.tynxb.2023-0681

中图分类号： TM73

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