摘要
推导了考虑系统备用情况下的机组节点边际电价与机组运行约束影子价格、系统备用约束影子价格的关系公式。分析了机组功率上下限约束、机组爬坡滑坡约束对节点边际电价及系统电能价格分量、阻塞价格分量的影响,可为节点边际电价的形成原因及影响因素剖析提供一种分析工具,有助于市场成员就自身机组物理参数对收益的影响做参考评估。基于5节点算例验证了上述节点边际电价计算方法与传统计算方法结果的一致性,计算并分析了多案例中机组运行约束对节点边际电价及系统电能价格、阻塞价格的影响。
The formula of the relationship between locational marginal price and the shadow prices of unit operating constraints and system reserve constraints is deduced considering the system reserve. The influence of unit’s upper and lower power constraints and unit’s ramping up and down rate constraints on locational marginal price, system power price and congestion price is analyzed. An analysis tool for the formation and influencing factors of the locational marginal price is provided, and it is helpful for market participants to make a referential assessment of the impact of their own unit’s physical parameters on earnings. Based on a 5-node case study, consistency between the calculation results with locational marginal price formula derived in this paper and traditional calculation method is verified. The influence of unit operation constraints on the locational marginal price, system energy price and congestion price is analyzed in different case studies.
作者
史新红
郑亚先
薛必克
冯树海
SHI Xinhong;ZHENG Yaxian;XUE Bike;FENG Shuhai(China Electric Power Research Institute, Nanjing 210003, Jiangsu Province, China)
出处
《电网技术》
EI
CSCD
北大核心
2019年第8期2658-2664,共7页
Power System Technology
基金
国家电网公司科技项目(全局计划决策与现货市场核心技术研究与应用)~~
关键词
节点边际电价
机组运行约束
电价影响因素分析
locational marginal price
unit operation constraint
electricity price impact factors analysis
