摘要
充分利用灵活性资源的调节作用能够有效平抑风电的随机波动,提高风电接纳能力。提出一种计及源荷储综合灵活性的电力系统日前优化调度方法。分析了电力系统灵活性需求及源荷储灵活性供给特性,综合考虑系统运行灵活性概率平衡特性;基于条件风险价值(CVaR)度量灵活性不足给电力系统带来的风险损失,将CVaR融入目标函数以优化分配有限的灵活性资源;构建了计及灵活性的随机优化调度模型。以IEEE 39节点系统和实际区域电网为算例验证了所提方法和模型的可行性、有效性。
Making full use of the regulating effect of flexibility resources can effectively smooth the random fluctuation of wind power and improve the wind power acceptance capacity.A day-ahead optimal scheduling of power system considering comprehensive flexibility of source-load-storage is proposed.The flexibility demand characteristic of power system and the flexibility supply characteristic of source-load-storage are analyzed,and the probabilistic balance characteristic of system operation flexibility is considered comprehensively.CVaR(Conditional Value-at-Risk)is used to measure the risk loss of power system caused by insufficient flexibility,and is integrated into objective function to optimize the allocation of limited flexibility resources.A stochastic optimal scheduling model considering flexibility is constructed.The feasibility and validity of the proposed method and model are verified by the examples of IEEE 39-bus system and actual regional power grid.
作者
张高航
李凤婷
ZHANG Gaohang;LI Fengting(College of Electrical Engineering,Xinjiang University,Urumqi 830047,China)
出处
《电力自动化设备》
EI
CSCD
北大核心
2020年第12期159-165,共7页
Electric Power Automation Equipment
基金
国家自然科学基金资助项目(51767023)
新疆维吾尔自治区科技援疆专项(2017E0277)。
关键词
灵活性
灵活性资源
优化调度
运行风险
条件风险价值
日前调度
电力系统
flexibility
flexible resources
optimal scheduling
operational risk
CVaR
day-ahead scheduling
electric power systems
