Article(id=1276897192921133212, tenantId=1146029695717560320, journalId=1276576982599962646, issueId=1276896975568109838, articleNumber=null, orderNo=null, doi=10.3724/j.slxb.20250440, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1754409600000, receivedDateStr=2025-08-06, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1782365614394, onlineDateStr=2026-06-25, pubDate=1779206400000, pubDateStr=2026-05-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1782365614394, onlineIssueDateStr=2026-06-25, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1782365614394, creator=13701087609, updateTime=1782365614394, updator=13701087609, issue=Issue{id=1276896975568109838, tenantId=1146029695717560320, journalId=1276576982599962646, year='2026', volume='57', issue='5', pageStart='651', pageEnd='808', issueExtLink='null', onlineDate='null', pubDate='1779206400000', pubDateStr='2026-05-20', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=1, specialIssue=null, createTime=1782365562574, creator='13701087609', updateTime=1782367019422, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1276903086153142605, tenantId=1146029695717560320, journalId=1276576982599962646, issueId=1276896975568109838, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1276903086153142606, tenantId=1146029695717560320, journalId=1276576982599962646, issueId=1276896975568109838, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=663, endPage=674, ext={EN=ArticleExt(id=1276897193135042718, articleId=1276897192921133212, tenantId=1146029695717560320, journalId=1276576982599962646, language=EN, title=Extraction method for dispatching rules of the main reservoir considering joint operation risks in hydro-wind-solar power systems, columnId=null, journalTitle=Journal of Hydraulic Engineering, columnName=null, runingTitle=null, highlight=null, articleAbstract=

Reservoir scheduling rules are pivotal for guiding reservoir operations. To mitigate water abandonment and power shortage risks in integrated hydro-wind-solar systems, this study proposes a method for deriving main reservoir scheduling rules, accounting for joint operation risks. Multi-timescale inflow assessment criterion for water abandonment and power shortage risks are constructed, with Monte Carlo simulation and K-means clustering generating extreme condition scenario combinations to characterize risks and serve as model inputs. Considering hydraulic, electrical, and renewable energy consumption constraints, optimized scheduling strategies for cascade hydropower stations are developed, and a main reservoir scheduling model is formulated to ensure no water abandonment or power shortages within fixed future periods. This model is transformed into a mixed-integer linear programming (MILP) model, solved hourly within each scheduling cycle, to determine the upper bounds for water abandonment risk and the lower bounds for power supply assurance. Applied to a hydro-wind-solar base in southwest China, the effectiveness of the method is validated through comparative rules and multi-scenario tests, achieving no water abandonment in the flood season and no power shortages in the dry season compared to baseline rules. The approach consistently derives robust scheduling rules across scenarios, providing theoretical support for stable hydro-wind-solar operations under rapid renewable energy growth.

, authors=null, authorsList=Shengli LIAO, Zixin YAN, Shushan LI, Benxi LIU, Chuntian CHENG, Jiang XIONG, authorCompany=null, correspAuthors=null, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1276897196096221360, articleId=1276897192921133212, tenantId=1146029695717560320, journalId=1276576982599962646, language=CN, title=考虑水风光联合运行风险的主力水库调度规则提取方法, columnId=0, journalTitle=水利学报, columnName=, runingTitle=null, highlight=null, articleAbstract=

水库调度规则对指导水库运行至关重要。针对水风光联合运行面临的弃水和缺电问题,提出了一种考虑水风光联合运行风险的主力水库调度规则提取方法。首先,构建水风光基地弃水与缺电风险工况多时间尺度来水评估准则,结合蒙特卡洛模拟和K-means聚类生成极端工况下的场景组合,以表征各风险工况并为模型提供输入。接着,考虑水风光基地水力约束、电力约束及新能源消纳规则,提出梯级电站在各风险工况下的调度策略,分别建立满足未来固定时段内不弃水、不缺电的主力水库调度图优化模型。最后,在调度周期内采用混合整数线性规划(MILP)模型逐时段求解,提取主力水库弃水风险上线和电力保供下线。以中国西南某流域水风光一体化基地为工程背景进行主力水库调度规则提取,并设置对比规则与多种参数场景验证所提方法的有效性。结果表明:所提规则可有效实现水风光基地运行风险态势感知并通过水位调控显著降低运行风险,相较于对比规则可实现汛期无弃水、枯期无缺电;同时所提方法在各种参数场景下均能有效提取主力水库调度规则,为新能源高速发展背景下水风光基地稳定运行提供理论支撑。

, authors=

廖胜利(1980—),教授,博士生导师,主要从事水文预报和梯级水电优化调度研究。E-mail:

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廖胜利(1980—),教授,博士生导师,主要从事水文预报和梯级水电优化调度研究。E-mail:

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label=Fig.6, caption=Upper bound of water abandonment risk and lower bound of power supply guarantee for plant A at τ = 6, figureFileSmall=wHKkSL7hLAgVyvmrLb1Cyw==, figureFileBig=Be20BI3tyCL5IZfqtPrq+Q==, tableContent=null), ArticleFig(id=1277261247871578475, tenantId=1146029695717560320, journalId=1276576982599962646, articleId=1276897192921133212, language=CN, label=图6, caption=τ = 6电站A弃水风险上线和电力保供下线, figureFileSmall=wHKkSL7hLAgVyvmrLb1Cyw==, figureFileBig=Be20BI3tyCL5IZfqtPrq+Q==, tableContent=null), ArticleFig(id=1277261247938687340, tenantId=1146029695717560320, journalId=1276576982599962646, articleId=1276897192921133212, language=EN, label=Fig.7, caption=Calculation results of different renewable energy integration rates, figureFileSmall=Qdz63uSI8rGa5OAV/SfEAw==, figureFileBig=APdh6yL9YXkBqVoKl/2B4w==, tableContent=null), ArticleFig(id=1277261248001601901, tenantId=1146029695717560320, journalId=1276576982599962646, articleId=1276897192921133212, language=CN, label=图7, caption=不同新能源消纳率计算结果, figureFileSmall=Qdz63uSI8rGa5OAV/SfEAw==, figureFileBig=APdh6yL9YXkBqVoKl/2B4w==, tableContent=null), ArticleFig(id=1277261248068710766, tenantId=1146029695717560320, journalId=1276576982599962646, articleId=1276897192921133212, language=EN, label=Fig.8, caption=Simulation results of key parameters, figureFileSmall=koe37NBPbQxvvajslcE3mw==, figureFileBig=mdmoZprTqdg3H4itJ99ffQ==, tableContent=null), ArticleFig(id=1277261248131625327, tenantId=1146029695717560320, journalId=1276576982599962646, articleId=1276897192921133212, language=CN, label=图8, caption=关键参数模拟计算结果, figureFileSmall=koe37NBPbQxvvajslcE3mw==, figureFileBig=mdmoZprTqdg3H4itJ99ffQ==, tableContent=null), ArticleFig(id=1277261248215511408, tenantId=1146029695717560320, journalId=1276576982599962646, articleId=1276897192921133212, language=EN, label=Table 1, caption=

Multi-timescale inflow assessment criterion for risk condition of water abandonment and power shortage

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弃水风险工况缺电风险工况
评估准则含义评估准则含义
A1时段t梯级水库径流值最大B1时段t梯级水库径流值最小
A2时段(t+1)梯级水库径流值最大B2时段(t+1)梯级水库径流值最小
Aτ时段(t+τ-1)梯级水库径流值最大Bτ时段(t+τ-1)梯级水库径流值最小
Aτ+1时段(t+τ)梯级水库径流值最大Bτ+1时段(t+τ)梯级水库径流值最小
Aτ+2时段t至(t+τ)内梯级水库径流值总和最大Bτ+2时段t至(t+τ)内梯级水库径流值总和最小
Aτ+3时段t至(t+τ)内梯级水库径流过程CV值最大Bτ+3时段t至(t+τ)内梯级水库径流过程CV值最大
Aτ+4时段t至(t+τ)内梯级水库径流过程CV值最小Bτ+4时段t至(t+τ)内梯级水库径流过程CV值最小
), ArticleFig(id=1277261248291008881, tenantId=1146029695717560320, journalId=1276576982599962646, articleId=1276897192921133212, language=CN, label=表1, caption=

弃水与缺电风险工况多时间尺度来水评估准则

, figureFileSmall=null, figureFileBig=null, tableContent=
弃水风险工况缺电风险工况
评估准则含义评估准则含义
A1时段t梯级水库径流值最大B1时段t梯级水库径流值最小
A2时段(t+1)梯级水库径流值最大B2时段(t+1)梯级水库径流值最小
Aτ时段(t+τ-1)梯级水库径流值最大Bτ时段(t+τ-1)梯级水库径流值最小
Aτ+1时段(t+τ)梯级水库径流值最大Bτ+1时段(t+τ)梯级水库径流值最小
Aτ+2时段t至(t+τ)内梯级水库径流值总和最大Bτ+2时段t至(t+τ)内梯级水库径流值总和最小
Aτ+3时段t至(t+τ)内梯级水库径流过程CV值最大Bτ+3时段t至(t+τ)内梯级水库径流过程CV值最大
Aτ+4时段t至(t+τ)内梯级水库径流过程CV值最小Bτ+4时段t至(t+τ)内梯级水库径流过程CV值最小
), ArticleFig(id=1277261248353923442, tenantId=1146029695717560320, journalId=1276576982599962646, articleId=1276897192921133212, language=EN, label=Table 2, caption=

Basic information of basin hydropower stations

, figureFileSmall=null, figureFileBig=null, tableContent=
电站装机容量/MW多年平均发电量/(亿kWh)调节性能正常高水位/m死水位/m
电站A4200188.85不完全多年12401166
电站B167047.26不完全季994988
电站C135059.30不完全季899887
风电站70017.50

光伏电站90012.60
), ArticleFig(id=1277261248416838003, tenantId=1146029695717560320, journalId=1276576982599962646, articleId=1276897192921133212, language=CN, label=表2, caption=

流域电站基本信息

, figureFileSmall=null, figureFileBig=null, tableContent=
电站装机容量/MW多年平均发电量/(亿kWh)调节性能正常高水位/m死水位/m
电站A4200188.85不完全多年12401166
电站B167047.26不完全季994988
电站C135059.30不完全季899887
风电站70017.50

光伏电站90012.60
), ArticleFig(id=1277261248492335476, tenantId=1146029695717560320, journalId=1276576982599962646, articleId=1276897192921133212, language=EN, label=Table 3, caption=

Simulation results of proposed rules versus comparative rules

, figureFileSmall=null, figureFileBig=null, tableContent=
规则06/30—07/0601/31—02/06
弃水量/万m3缺电量/(MWh)弃水量/万m3缺电量/(MWh)
所提规则0000
对比规则246.87

0.01

对比规则3

0.13

201.62
), ArticleFig(id=1277261248555250037, tenantId=1146029695717560320, journalId=1276576982599962646, articleId=1276897192921133212, language=CN, label=表3, caption=

所提规则与对比规则模拟计算结果

, figureFileSmall=null, figureFileBig=null, tableContent=
规则06/30—07/0601/31—02/06
弃水量/万m3缺电量/(MWh)弃水量/万m3缺电量/(MWh)
所提规则0000
对比规则246.87

0.01

对比规则3

0.13

201.62
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考虑水风光联合运行风险的主力水库调度规则提取方法
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廖胜利 1 , 阎紫鑫 1 , 李树山 2 , 刘本希 1 , 程春田 1 , 熊江 1
水利学报 | 2026,57(5): 663-674
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水利学报 | 2026 , 57 (5) : 663 -674
考虑水风光联合运行风险的主力水库调度规则提取方法
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廖胜利1 , 阎紫鑫1, 李树山2, 刘本希1, 程春田1, 熊江1
作者信息
  • 1.大连理工大学 水电与水信息研究所,辽宁 大连 116024
  • 2.中国南方电网电力调度控制中心,广东 广州 510663
Extraction method for dispatching rules of the main reservoir considering joint operation risks in hydro-wind-solar power systems
Shengli LIAO1 , Zixin YAN1, Shushan LI2, Benxi LIU1, Chuntian CHENG1, Jiang XIONG1
Affiliations
  • 1.Institute of Hydropower & Hydroinformatics,Dalian University of Technology,Dalian 116024,China
  • 2.Electric Power Dispatching Control Center,China Southern Power Grid Company Limited,Guangzhou 510663,China
出版时间: 2026-05-20 doi: 10.3724/j.slxb.20250440
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水库调度规则对指导水库运行至关重要。针对水风光联合运行面临的弃水和缺电问题,提出了一种考虑水风光联合运行风险的主力水库调度规则提取方法。首先,构建水风光基地弃水与缺电风险工况多时间尺度来水评估准则,结合蒙特卡洛模拟和K-means聚类生成极端工况下的场景组合,以表征各风险工况并为模型提供输入。接着,考虑水风光基地水力约束、电力约束及新能源消纳规则,提出梯级电站在各风险工况下的调度策略,分别建立满足未来固定时段内不弃水、不缺电的主力水库调度图优化模型。最后,在调度周期内采用混合整数线性规划(MILP)模型逐时段求解,提取主力水库弃水风险上线和电力保供下线。以中国西南某流域水风光一体化基地为工程背景进行主力水库调度规则提取,并设置对比规则与多种参数场景验证所提方法的有效性。结果表明:所提规则可有效实现水风光基地运行风险态势感知并通过水位调控显著降低运行风险,相较于对比规则可实现汛期无弃水、枯期无缺电;同时所提方法在各种参数场景下均能有效提取主力水库调度规则,为新能源高速发展背景下水风光基地稳定运行提供理论支撑。

弃水  /  缺电  /  调度规则  /  风险态势感知  /  能源消纳  /  电力保供

Reservoir scheduling rules are pivotal for guiding reservoir operations. To mitigate water abandonment and power shortage risks in integrated hydro-wind-solar systems, this study proposes a method for deriving main reservoir scheduling rules, accounting for joint operation risks. Multi-timescale inflow assessment criterion for water abandonment and power shortage risks are constructed, with Monte Carlo simulation and K-means clustering generating extreme condition scenario combinations to characterize risks and serve as model inputs. Considering hydraulic, electrical, and renewable energy consumption constraints, optimized scheduling strategies for cascade hydropower stations are developed, and a main reservoir scheduling model is formulated to ensure no water abandonment or power shortages within fixed future periods. This model is transformed into a mixed-integer linear programming (MILP) model, solved hourly within each scheduling cycle, to determine the upper bounds for water abandonment risk and the lower bounds for power supply assurance. Applied to a hydro-wind-solar base in southwest China, the effectiveness of the method is validated through comparative rules and multi-scenario tests, achieving no water abandonment in the flood season and no power shortages in the dry season compared to baseline rules. The approach consistently derives robust scheduling rules across scenarios, providing theoretical support for stable hydro-wind-solar operations under rapid renewable energy growth.

abandoned water  /  power shortage  /  scheduling rules  /  risk situation awareness  /  energy consumption  /  power supply guarantee
廖胜利, 阎紫鑫, 李树山, 刘本希, 程春田, 熊江. 考虑水风光联合运行风险的主力水库调度规则提取方法. 水利学报, 2026 , 57 (5) : 663 -674 . DOI: 10.3724/j.slxb.20250440
Shengli LIAO, Zixin YAN, Shushan LI, Benxi LIU, Chuntian CHENG, Jiang XIONG. Extraction method for dispatching rules of the main reservoir considering joint operation risks in hydro-wind-solar power systems[J]. Journal of Hydraulic Engineering, 2026 , 57 (5) : 663 -674 . DOI: 10.3724/j.slxb.20250440
在双碳目标推动下,风电和光伏等新能源迅速发展1。然而,风光发电具有波动性、随机性和不可调度性,给电力系统稳定运行带来了诸多挑战2。目前应对该问题较为安全可靠的方式是将其与具备快速调节负荷能力的能源协同调度3。水电具有启停迅速、响应灵敏、调节性能强等特点4,且与风光在日内及季节尺度上互补性良好5。其中,位于流域龙头的主力水库调节能力较强,联合调度时对下游中小型水库的补偿效益显著,同时协同风光发电,有效保障电力系统稳定2。因此,依托中国水电资源禀赋优势,充分挖掘流域主力水库多尺度、大规模灵活调节能力,是推动新能源高效消纳并保障电网电力稳定供应的关键途经之一6
相较于梯级水电站独立调度,水风光联合调度因水库径流、风光发电出力及用电需求等多重不确定性相互叠加,显著改变了水电站运行边界7。因此,基于径流时序特性的传统水库调度规则在联合调度模式下难以适用8。同时,联合调度方式使得水风光基地在运行中面临严重的弃水和缺电风险9。亟需探索适用于水风光基地的主力水库调度规则,指导水库调度人员在水风光联合调度模式下根据水库面临状态做出蓄放水决策,降低运行风险,促进水风光基地清洁能源消纳并有效支撑电网保供10
目前针对水风光基地水库调度规则的研究,通常采用随机优化11、鲁棒优化12或基于历史时序数据模拟13等方法表征新能源的波动特征,并据此作为水库的运行边界进行调度规则制定。如谢蒙飞等14以径流-风光发电联合场景集为输入,构建随机优化模型以提取主力水库水位控制规则;王进等15基于历史径流和风光发电出力数据进行模拟调度,并采用NSGAⅡ算法优化调度参数,提出梯级水风光六段式互补调度规则。上述方法虽考虑到新能源的随机性与波动性,但针对极端情况下水风光多能源耦合不确定性的研究较少,无法应对水风光基地日益频发的极端风险事件,如丰枯急转16、台风17、暴雨18、干旱19等。另一些研究人员从目标角度出发制定水库调度规则,如沈筱等20建立以系统总发电量最大为目标的确定性优化模型并结合BP神经网络提取水库调度规则;Li等21提出水光互补系统长期运行计划的多目标优化模型,兼顾电网安全及效益;Wang等22建立发电量最大和期末蓄能最大多目标模型,提取极端干旱条件下主力水库调度规则。然而,上述研究大多以发电量最大、期末蓄能最大、出力保证率最大等为目标,均未从水风光基地运行风险角度出发研究水库调度规则,难以完全通过规则实现水风光基地运行风险态势感知与有效防控。
综上,本文从风险角度出发,针对水风光基地运行过程中的弃水和缺电两类风险工况进行主力水库调度规则的提取,明确主力水库运行红线。首先,构建极端风险工况下多时间尺度来水评估准则并据此生成场景组合,对调度周期内极端工况进行精准刻画,将不确定性问题转化为确定性问题;接着提出梯级电站在极端风险工况下的运行策略,以此为基础建立主力水库调度图优化模型。求解过程中对约束进行线性化处理,将原模型转化为混合整数线性规划(Mixed-Integer Linear Programming,MILP)模型进行求解,根据逐时段求解结果提取主力水库弃水风险上线和电力保供下线。最后,以中国某水风光一体化基地为例进行调度规则提取,验证所提方法的有效性。
主力水库一般选择调节性能为年调节以上电站。以主力水库及其下游梯级和其周围风光电站为研究对象,分别构建满足未来τ天不弃水、不缺电的主力水库调度图优化模型。以经济性指标最小化耗水为目标引导梯级水电站出力分配23,兼顾运行风险与发电成本,如式(1)所示。模型调度周期时段总数为TT=365,调度时段步长Δt=1 d。模型调度时段示意图如图1所示。
minFZ1,t=i=1Ik=0τQi,t+kgen×Δt×24×3600
式中:i为水电站编号(i=1表示主力水库);I为水电站总数;t为时段编号;k为时段偏移量,k=0,1,,τQi,tgen为水电站i在时段t的发电流量,m3/s;FZ1,t为优化目标,Z1,t为主力水库在时段t的初始水位,是待优化变量,m。
(1)水量平衡方程
Vi,t+k+1=Vi,t+k+Ri,t+k-Qi,t+kout×Δt×24×3600           i=1Vi,t+k+Ri,t+k+Qi-1,t+kout-Qi,t+kout×Δt×24×3600   i=2,3,,I
Qi,t+kout=Qi,t+kgen+Qi,t+kspill
式中:Vi,t+kVi,t+k+1分别为水电站i在时段(t+k)的初始库容和末库容,m3Ri,t+kQi,t+kout Qi,t+kspill分别为水电站i在时段(t+k)的区间流量、出库流量和弃水流量,m3/s。
(2)水位库容关系及约束
Zi,t+k=fiZVVi,t+k
ZiminZi,t+kZimax
式中:ZiminZimax分别为水电站i的坝上水位下限、上限,m; fiZV·为水电站i的水位库容关系曲线。
(3)流量约束与尾水位泄量约束
Zi,t+ktail=fitailQi,t+kout
Qigen,minQi,t+kgenQigen,max
Qiout,minQi,t+koutQiout,max
式中:Zi,t+ktail为水电站i在时段(t+k)的尾水位,m;fitail·为水电站i的尾水位泄量曲线;Qigen,minQigen,max分别为水电站i的发电流量下限、上限,m3/s;Qiout,minQiout,max分别为水电站i的出库流量下限、上限,m3/s。
(4)水头约束
Hi,t+k=Zi,t+k+Zi,t+k+12-Zi,t+ktail-Hi,t+kloss
式中:Hi,t+k为水电站i在时段(t+k)的净水头,m;Hi,t+kloss为水电站i在时段(t+k)的水头损失,m。
(1)水风光基地保证出力约束
i=1IPi,t+kH+w=1WPw,t+kWind+s=1SPs,t+kSolarNt+kmin
式中:Pi,t+kHPw,t+kWindPs,t+kSolar分别为水电站i、风电场w和光伏电站s在时段(t+k)的实际上网出力,MW;Nt+kmin为时段(t+k)水风光基地保证出力,MW。
(2)水风光基地输电通道容量约束
i=1IPi,t+kH+w=1WPw,t+kWind+s=1SPs,t+kSolarTrt+kmax
式中:Trt+kmax为时段(t+k)水风光基地最大输电通道容量,MW。
(3)水电站出力约束
Pi,t+kH=KiQi,t+kgenHi,t+k
Pi,t+kminPi,t+kHPi,t+kmax
式中:Pi,t+kminPi,t+kmax分别为水电站i在时段(t+k)的出力下限、上限,MW;Ki为水电站i的综合出力系数。
(4)新能源最低消纳率要求
w=1WPw,t+kWind+s=1SPs,t+kSolarw=1WPw,t+kWind+Pw,t+kWS+s=1S(Ps,t+kSolar+Ps,t+kSS)αt
式中:Pw,t+kWSPs,t+kSS分别为风电场w和光伏电站s在时段(t+k)的弃电,MW;αt为新能源的最低消纳率。
采用极值思想刻画水风光基地弃水与缺电两类风险工况9。针对弃水风险工况,选取时段t至(t+τ)内流域来水偏丰且风电、光伏高出力运行场景进行分析,在新能源优先消纳规则下,梯级电站为避让消纳空间导致其面临较高弃水风险。针对缺电风险工况,选取时段t至(t+τ)内流域来水偏枯且风电、光伏低出力运行场景进行分析,此时新能源全部消纳仍难以满足电网保供需求,水风光基地缺电风险较高。各风险工况刻画表征具体步骤如下。
采用蒙特卡洛抽样与K-means聚类生成时段t至(t+τ)内水库径流及风光出力的典型场景。以历史同期径流过程为输入,生成梯级水库径流联合典型场景;以历史汛、枯期风光出力过程为输入,分别生成风电站和光伏电站的汛、枯期出力典型场景,这是风险工况刻画表征的首要环节。
(1)风光出力过程筛选:根据调度时段所属时期(汛期或枯期),以时段t至(t+τ)内总出力和最大为准则,从风光出力场景中分别选取时段t至(t+τ)内风电站和光伏电站出力过程。
(2)径流过程筛选:充分考虑流域来水的极端情况,采用(τ+4)个评估准则从径流联合场景中筛选对应的梯级水库径流过程。其中,变异系数(Coefficient of Variation, CV)为标准差与平均数的比值,是衡量水文数据变异程度的重要准则,其值越大表示径流过程的波动程度越大。
(3)水风光场景组合:组合筛选出的径流过程与风光出力过程,生成(τ+4)个水风光运行场景组合,以精确刻画时段t至(t+τ)内水风光基地梯级电站弃水风险工况特性。结合水电站参数及运行边界作为弃水风险工况下的模型输入。
(1)风光出力过程筛选:根据调度时段所属时期(汛期或枯期),以时段t至(t+τ)内总出力和最小为准则,从风光出力场景中分别选取时段t至(t+τ)内风电站和光伏电站出力过程。
(2)径流过程筛选与水风光场景组合:采用与弃水风险工况相同的筛选与组合方法。设置(τ+4)个多时间尺度来水评估准则并据此从径流联合场景中筛选对应的梯级水库径流过程,将其与筛选出的风光出力过程进行组合,结合水电站参数及运行边界作为缺电风险工况下的模型输入。
弃水风险工况与缺电风险工况下多时间尺度来水评估准则如表1所示。
(1)弃水风险工况下,为提高通道利用率以减少弃水,梯级电站需在满足水力和电力约束下以最大发电能力运行,如式(15)所示。
(2)设置主力水库(t+τ)时段末水位Z1,maxc为该时刻水库可蓄水的最高水位,以充分利用其防洪库容,如式(16)所示。水库来水丰沛时,主力水库在完成出力任务后仍剩余较多水量,水库水位呈上升趋势,可使主力水库蓄至正常高水位或防洪限制水位。然而,水库来水不足时,入库流量无法完成出力目标,需利用水库剩余水量弥补目标出力缺口,此时主力水库水位呈下降趋势。以二分法搜索主力水库(t+τ)时段末可蓄水的最高水位,初始值为Z1max,搜索范围为[Z1minZ1max],最大迭代次数为300。
(3)除主力水库外的下游水电站集合为Iq,下游电站维持高水位运行,其入库流量即为发电流量,若遭遇特大洪水则按装机容量发电,如式(17)所示。
(4)时段t至(t+τ)内梯级电站要求无弃水,如式(18)所示。
i=1IPi,t+kH=min i=1IPi,t+kmax,Trtmax-w=1WPw,t+kWind-s=1SPs,t+kSolar
Z1,t+τ+1=Z1,maxc
Pi,t+kH=min KiQi,t+kinHi,t+k,Pi,t+kmax    iIq
Qi,t+kspill=0
(1)缺电风险工况下,电网优先消纳新能源后仍面临供电不足难题。系统保证出力扣除新能源出力后,剩余部分为梯级电站最小出力,如式(19)所示。
(2)设置主力水库(t+τ)时段末水位Z1,minc为该时刻主力水库可消落的最低水位,以充分发挥主力水库在电力保供中的压舱石作用,如式(20)所示。该水位优化确定方法同弃水风险工况,初始值为Z1min,搜索范围为[Z1minZ1max],最大迭代次数为300。
(3)其他下游水电站在缺电风险工况下均以最小出力运行,如式(21)所示。
(4)时段t至(t+τ)内梯级电站要求无弃水,如式(18)所示。
i=1NPi,t+kH=max i=1NPi,t+kmin,Ntmin-w=1WPw,t+kWind-s=1SPs,t+kSolar
Z1,t+τ+1=Z1,minc
Pi,t+kH=Pi,t+kmin,iIq
随着商业求解器的发展,理论性强、建模方便的数学规划模型逐渐被广泛应用于求解水电调度问题, MILP模型建模灵活性高,求解稳定性强,是最常用的数学规划模型24。这里采用分段线性插值25对约束(4)(7)进行线性化,采用McCormick包络法26对约束(13)进行线性化。
构建MILP模型进行调度计算。针对弃水风险工况,分别计算所有场景组合在时段t至(t+τ)内主力水库水位过程线并取下包络线,定义时段t初始水位为临界弃水水位,如图2(a)所示,任意时段控制主力水库水位在临界弃水水位以下,可确保未来τ天内梯级电站无弃水。临界弃水水位越低,表示未来τ个时段内梯级电站弃水风险越高,即主力水库在当前时段需维持较低水位,以腾出防洪库容应对未来固定时段的极端洪水。
针对缺电风险工况,分别计算所有场景组合在时段t至(t+τ)内主力水库水位过程线并取上包络线,定义时段t初始水位为临界保供水位,如图2(b)所示,任意时段控制主力水库水位在临界保供水位以上,可确保未来τ天内水风光基地无缺电。临界保供水位越高,表示未来τ个时段内水风光基地缺电风险越高,即主力水库在当前时段需抬高水位,以储备水量应对未来固定时段的极端干旱。在调度周期内逐时段求解主力水库的临界弃水水位和保供水位,得到的临界弃水水位过程线即为弃水风险上线,得到的临界保供水位过程线为电力保供下线,所提规则可实现水风光基地弃水、缺电风险态势感知。
所有模型采用Gurobi进行求解,gap值设置为0.05。计算步骤如下:
步骤一:针对弃水与缺电风险工况分别构建多尺度径流评估准则,并结合蒙特卡洛与K-means聚类生成(τ+4)个水风光场景组合,刻画时段t至(t+τ)内各风险工况。
步骤二:综合考虑水风光基地水力约束、电力约束和新能源消纳规则,应用梯级电站在弃水与缺电风险工况下调度策略,构建主力水库调度图优化模型。
步骤三:针对弃水和缺电风险工况,在调度周期内采用MILP模型逐时段求解,获得主力水库弃水风险上线及电力保供下线。整体求解框架如图3所示。
以中国西南某流域水风光基地为背景,该流域电站群调节能力优越,风光资源丰富,已初步实现水风光一体化调度。选取该流域水电站A、B、C和风电、光伏电站为研究对象,其中龙头水电站A为不完全多年调节电站,直接影响下游电站的防洪和发电,选择其为主力水库。流域基本信息如表2所示。
所研究流域具有明显的汛、枯期特性,因此选取06月30日和01月31日分别作为汛期和枯期典型调度时段进行分析。其中调度周期为365 d,t = 1表示01月01日,τ = 6,αt=100%。模型输入数据包括梯级电站基础资料、长系列径流资料、长系列风光出力过程、水风光基地输电通道容量及保证出力。
输入1991—2021年水库实际径流及风光电站实际出力数据,采用3.1节所述方法表征各典型调度时段的弃水和缺电风险工况。其中,06月30日至07月06日弃水风险工况下的场景组合如图4,01月31日至02月06日缺电风险工况下的场景组合如图5所示。
以未考虑新能源的传统调度规则作为对比,记为“对比规则1”。计算两种规则下电站A的弃水风险上线和电力保供下线。弃水风险上线计算结果如图6(a)所示,枯期来水不足,梯级电站弃水风险较低,两种规则的临界弃水水位差异较小;汛期来水丰沛,梯级电站弃水风险较大,电站A需提前腾库迎汛,预留足够的防洪库容以应对未来6天的极丰来水。相较于对比规则1,在所提规则下存在多能源通道堵塞情况,梯级水库弃水风险较大,电站A临界弃水水位更低。电力保供下线计算结果如图6(b)所示,枯期水库来水不足,水风光基地缺电风险较大,此时需抬高电站A水位,预留足够多的水量保证调度期电力供应。相较于对比规则1,在所提规则下水风光多能源共同承担保供目标,水风光基地缺电风险较小,电站A临界保供水位更低,体现多能互补优势;汛期水库来水丰沛,缺电风险较低,两种规则临界保供水位过程相差不大。
所提取的弃水风险上线和电力保供下线可综合反映历史同期梯级电站遭遇的最大强度极端灾害。图6(a)M点为电站A弃水风险上线最低点,临界弃水水位1224.5 m,日期为07月09日。该地区在2017年07月09日发生了20年一遇洪涝灾害,为历史同期强度最大。依据所提规则,电站A于2017年07月09日初始水位低于1224.5 m,可确保2017年07月09 日至15日内梯级水库无弃水风险。图6(b)N点为电站A电力保供下线最高点,临界保供水位1167.7 m,日期为01月19日。该流域2020年1月下旬水库入库流量为近10年最低,极端干旱导致水风光基地电力保供目标难以完成。依据所提规则,电站A于2020年01月19日初始水位高于1167.7 m,可确保2020年01月19日至25日内水风光基地无缺电风险。
为验证所提规则的有效性,针对汛、枯期典型调度时段,分别按是否遵循所提规则进行对比分析。(1)对比规则2:不遵循弃水风险上线,设置电站A于01月31日和06月30日初始水位高于弃水风险上线0.1 m。(2)对比规则3:不遵循电力保供下线,设置电站A于01月31日和06月30日初始水位低于电力保供下线0.1 m。
采用所提规则与对比规则分别进行模拟调度,输入数据为1990—2021年调度期梯级水库实际径流及风光电站出力数据,分别统计06月30日—07月06日和01月31日—02月06日水风光基地平均弃水量和平均缺电量,计算结果如表3所示。所提规则相较对比规则2在汛期平均弃水量减少46.87万m³,枯期减少0.01万m³。所提规则相较对比规则3在汛期平均缺电量减少0.13 MWh,枯期减小201.62 MWh。分析表明所提规则可有效实现水风光基地弃水与缺电风险态势感知,并通过水位调控降低水风光基地运行风险。
由于所研究水风光基地新能源装机占比较低,同时为深入探讨新能源极端出力下主力水库调度规则,故设定新能源消纳率为100%,即实现全额消纳。但随着新能源装机持续增长,高比例消纳难度显著增加,需考虑当地新能源最低消纳率约束。为验证此影响,在0 ~ 100%之间以20%为间隔设定6种新能源最低消纳率场景,针对汛、枯期典型调度时段分别计算电站A临界弃水水位和保供水位。计算结果如图7所示,随着新能源最低消纳率的增加,电站A临界弃水水位逐渐降低。为了实现新能源高比例消纳,梯级电站需牺牲出力空间导致其面临更高的弃水风险,主力水库需保持更低的水位面临未来时段的丰沛来水,其中汛期更为明显。与此同时,随着新能源最低消纳率的增加,电站A临界保供水位逐渐降低。新能源的高比例消纳缓解了水电站的保供压力,即水风光基地缺电风险降低,水电站水位可消落至更低,其中枯期更为明显。
随着风光新能源大规模并网,对调度规则在动态环境下的适应性要求更高。选取τTrtmaxNtmin及风光装机容量作为关键参数,进行多场景调度规则提取,探讨在新能源高速发展背景下的主力水库调度规则。若无特殊说明,τ = 6,αt=100%
为适应不同调度期的水库水位控制需求,分别设置τ为2、4、6和14四种场景进行调度规则提取。电站A弃水风险上线和电力保供下线计算结果如图8(a)所示,随着τ增大,汛期电站A的临界弃水水位逐渐降低,即梯级电站弃水风险随之增大;枯期电站A的临界保供水位逐渐升高,即水风光基地缺电风险随之增加。未来天数增大使径流、风电出力和光伏出力不确定性与随机性增强,导致水风光基地弃水与缺电风险在一定程度上均增大,汛期电站A需预留更多防洪库容以应对极端洪水,枯期则需储备更多水量以应对极端干旱。相较于电站A传统调度图上线和下线,所提规则可在保证不弃水、不缺电前提下拓宽水库运行区间。汛期有助于水库维持高水位运行,降低耗水率并提升发电效益;枯期可使水库在较低水位运行,充分利用剩余水量,发挥其“保供压舱石”作用。
水风光基地输电通道容量主要影响弃水风险上线的计算,为验证此影响,设置Trtmax以500 MW为步长递增,构造四种场景并分别提取调度规则。计算结果如图8(b)所示,随着Trtmax增加,电站A临界弃水水位逐渐升高,表明提升水风光基地输电通道容量可有效降低梯级电站弃水风险,使水库能够以较高水位运行,从而降低发电耗水率并提升发电效益。
水风光基地保证出力主要影响主力水库电力保供下线的计算。为验证此影响,设置Ntmin以500 MW为步长递增,构造四种场景并分别提取调度规则。计算结果如图8(c)所示,随着Ntmin增加,电站A临界保供水位逐渐升高,即水风光基地缺电风险逐渐增大。保供压力的加剧叠加极端干旱天气,导致主力水库需维持更高水位以确保电力供应稳定。
分别取风光装机容量的不同倍数(0、0.5、1、1.25、1.5、1.75及2倍),构建7种场景进行调度规则提取,计算结果如图8(d)所示。随着风光装机容量增加,电站A临界保供水位逐渐降低,即水风光基地缺电风险逐渐减小,水风光协同承担电网保供目标,提高系统供电可靠性。然而,随着风光装机容量增加,电站A临界弃水水位逐渐降低,即梯级电站弃水风险逐渐增大,水电站需保持更低水位以避免通道堵塞造成的弃水。
本文提出了一种考虑水风光联合运行风险的主力水库调度规则提取方法,将该方法应用于中国西南某流域水风光一体化基地,得到如下结论:(1)所提风险工况表征方法有效捕获了调度周期内能源不确定性特征,实现了对调度周期内极端风险工况的有效刻画。(2)所提规则能够实现水风光基地风险态势感知,并通过调度图方式对主力水库水位进行可视化调控,确保未来固定时段内水风光基地不弃水、不缺电。相较于对比规则,所提规则有效降低了水风光系统弃水和缺电风险,其中汛期平均弃水量降低46.87万m3,枯期平均缺电量减少201.62 MWh。(3)所提方法在各种参数场景下有效提取了主力水库调度规则,可为新能源日益增长背景下水风光基地稳定运行提供理论支撑。
本文以水风光电站为计算单元研究了中长期尺度水风光基地主力水库的调度规则,随着抽水蓄能、化学储能电站的不断投产及电力系统调度精细化要求的不断提高,下一步将从更多能源的组合进行多时间尺度调度规则的研究,并引入人工智能、云计算等方式,以进一步提升模型求解效率。

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2026年第57卷第5期
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doi: 10.3724/j.slxb.20250440
  • 接收时间:2025-08-06
  • 首发时间:2026-06-25
  • 出版时间:2026-05-20
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  • 收稿日期:2025-08-06
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    1.大连理工大学 水电与水信息研究所,辽宁 大连 116024
    2.中国南方电网电力调度控制中心,广东 广州 510663
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2种不同金属材料的力学参数

Family
属数
Number of
genus
种数
Number of
species
占总种数比例
Percentage of
total species (%)

Genus
种数
Number of
species
占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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