基于预期完成率的月内滚动机组组合研究  

Research on intra-month dynamic unit commitment based on expected completion rate

作　　者：田年杰 苏华英 刘明顺 李赟 黄红伟 游成彬 TIAN Nianjie;SU Huaying;LIU Mingshun;LI Bin;HUANG Hongwei;YOU Chengbin(Electric power dispatch and control center of Guizhou Power Grid Co.,Ltd.,Guiyang 550002 Guizhou,China;Beijing Qingda Keyue Co.,Ltd.,Beijing 100084,China)

机构地区：[1]贵州电网电力调度控制中心,贵州贵阳550002 [2]北京清大科越股份有限公司,北京100084

出　　处：《电力大数据》2020年第4期71-78,共8页Power Systems and Big Data

摘　　要：为保障月度交易计划执行,提出了一种基于预期完成率的月内滚动机组组合方法,实现机组开停方式、电量计划完成情况和后续供需形势之间的有效匹配。为避免发电机组开停方式频繁调整,定义了发电厂预期完成率评价指标,以量化原发电机组组合方式下电量计划执行风险。若执行风险超过预期,则启动月内滚动机组组合。月内滚动机组组合以保障月度交易计划执行且各发电厂完成率均衡为优化目标,综合考虑电力电量平衡、网络传输能力、机组出力范围等约束条件,能够对当月后续运行日的发电机组组合方式优化调整。最后,基于IEEE-30节点系统构造的算例表明,预期完成率指标能够避免发电机组组合方式的频繁调整,保障发电厂月度交易计划可靠执行。In order to guarantee the implementation of the monthly electricity trading schedule,an intra-month dynamic unit commitment method based on the expected completion rate is proposed,which can effectively match the unit startup and shutdown mode,the completion of the electricity schedule and the subsequent supply and demand situation.In order to avoid frequent adjustment of the start-up and shutdown modes of the generating units,an indicator for the evaluation of the expected completion rate of the power plant is defined to quantify the risk of the planned implementation of electricity under the original combination mode of the generating units.If the execution risk exceeds expectations,a dynamic portfolio of units is initiated within the month.The intra-month dynamic unit commitment is optimized to ensure The intra-month dynamic unit commitment is optimized to ensure that the monthly trading plan is executed and the completion rate of each power plant is balanced,taking into account the constraints such as power balance,network transmission capacity,unit capacity range and other constraints,it can optimize and adjust the commitment mode of the generation unit on the subsequent operation days of the month.Finally,a case study based on the IEEE-30 buses system shows that the expected completion rate indicator can avoid frequent adjustment of the generator set combination method and ensure the reliable execution of the monthly trading plan of the power plant.

关 键 词：月内滚动机组组合 预期完成率 交易计划 执行风险 均衡性 

分 类 号：TM31[电气工程—电机]