电网技术2024，Vol.48Issue(2)：509-516,中插5-中插6,10.DOI:10.13335/j.1000-3673.pst.2022.2497
基于安全限定义的新能源电力系统区间经济调度模型及算法
Model and Algorithm of Interval Economic Dispatch of Power Systems Incorporating Renewable Energy Based on Security Limits Method
摘要
Abstract
With the large-scale wind power and other renewable energy are integrated into the power grid,their uncertainty and volatility have threatened the operational security of the power grids.In view of this problem,the robust dispatch and the interval dispatch methods conventionally adopted cannot consider the constraints of the system power balance and the line power flow safety simultaneously under the uncertainty.Thereby,in this paper,regarding the wind power output as an interval number,the interval economic dispatch model considering the shiftable and reducible flexible loads is established,where the constraints of power balance under the wind power limitation scenarios,the constraints of system power balance under the uncertainty,and the line power flow safety constraints under the uncertainty are taken into account.In order to solve the model,an interval economic dispatch approach based on the security limit method(SLM)is proposed,in which the optimizing-scenarios method(OSM)is used to solve the interval DC power flow,obtaining the safety limit.Then,the interval optimization model is transformed to a deterministic quadratic programming model through the SLM.Adopting the IEEE 118-bus system for testing,the results show that the dispatch strategy obtained by the proposed method is able to satisfy the power balance constraints in the extreme scenarios and ensure the safety of the line transmission power for all the uncertain scenarios,while reducing the dispatching cost.In addition,the operating cost can be saved by reducing the load or curtailing the wind when the wind power output is small or large,and the flexible loads here play a role of peak cutting and valley filling,which provides a technical support for the safe and economic operation of the power systems incorporating renewable energy.关键词
风力发电/柔性负荷/区间经济调度/安全限定义法/新能源电力系统Key words
wind power generation/flexible load/interval economic dispatch/security limits method/power system incorporating renewable energy分类
信息技术与安全科学引用本文复制引用
贾婉清,张聪,刘乾,王大鹏,杨怀智,李佳勇..基于安全限定义的新能源电力系统区间经济调度模型及算法[J].电网技术,2024,48(2):509-516,中插5-中插6,10.基金项目
国家自然科学基金青年科学基金项目(52007056) （52007056）
湖南省重点研发计划项目(2021SK2051) （2021SK2051）
国家自然科学基金项目(52125705).Project Supported by National Natural Science Foundation of China(52007056) （52125705）
Research and Development Program of Hunan Province(2021SK2051) （2021SK2051）
National Natural Science Foundation of China under Grant(52125705). （52125705）
