摘要
通过对多时间尺度下的各市场类型对风电消纳的影响分析,提出了多级竞争电力市场的价值评估模型,反映市场在优化电网资源配置,促进风电消纳方面的积极效果。该市场价值评估模型中涵盖了日前市场、小时前市场和实时运行校正,通过建立考虑风电不确定性的随机规划模型,评估3种不同时间尺度下的有效资源价值,形成不同时间下各级市场的相协调的出清决策。算例分析结果表明,多时间尺度协调的电力市场能够有效减小大规模风电不确定性带来影响和系统备用运行留用容量,有利于电网优化运行。
This paper presents an evaluation model to reflect the value brought from multiple competitive electricity markets throughout the analysis of the impact of multiple time-scale markets on wind power integration. This model is capable of optimally allocating the resources of power grids and promoting high wind power penetration by means of market measures.The proposed electricity market model consists of the day-ahead market, hour-ahead market and real time operation adjustment. Stochastic programming is used to model decision-making under wind power uncertainty, to evaluate the value of the available resources in this three time points. Furthermore, multiple time-scale coordination market clearing can be obtained at the corresponding time points. Numerical simulation demonstrates that the presented market framework can mitigate the uncertainty of large-scale wind power, leads to a reduction in system reserve requirements, and be beneficial to the optimal operation for a power grid.
出处
《江苏电机工程》
2015年第5期47-50,共4页
Jiangsu Electrical Engineering
关键词
电力市场
随机规划
多阶段场景树
风电
不确定因素
electricity market
stochastic programming
multi-stage scenario tree
wind power
uncertainty
