| 引用本文: | 王富阳,刘友波,胥威汀,苟竞,刘方,苏韵掣,刘俊勇.计及市场化电价信号导向的含高比例水电输电网扩展规划[J].电力自动化设备,2021,41(11): |
| WANG Fuyang,LIU Youbo,XU Weiting,GOU Jing,LIU Fang,SU Yunche,LIU Junyong.Expansion planning of transmission network with high proportion of hydropower considering guidance of marketized electricity price signal[J].Electric Power Automation Equipment,2021,41(11): |
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| 摘要: |
| 传统电网扩展规划模型难以反映未来一段时期竞争市场模式下全局供需态势对电网投资收益、市场主体意愿、社会效益的量化影响，且在含高比例水电输电网中水电外送断面容量与丰枯潮流差异的不匹配导致网络阻塞及交易盈余问题愈加严重。为此，提出高比例水电场景下计及市场化电价信号导向的输电网扩展规划模型。上层模型以最大化线路年投资收益为目标函数，形成规划决策线路；下层模型采用改进的k-means聚类算法得到含高比例水电输电网全年典型运行方式，基于市场交易出清结果与区域负荷响应特征，量化线路规划后的负荷增量及过网利用率，以市场化电价信号引导电网扩展规划，促进区域水电消纳。采用KKT最优条件实现上、下层模型的耦合，将双层规划问题转化为混合整数规划问题进行求解。以我国西南部某含高比例水电的实际电网为例，通过综合比较不同规划方法的阻塞盈余、投资收益及水电消纳比例验证了高比例水电接入下市场信号对扩展规划结果的影响。 |
| 关键词: 扩展规划 水电消纳 阻塞盈余 价格弹性 节点边际电价 |
| DOI：10.16081/j.epae.202105014 |
| 分类号:TM715 |
| 基金项目:国家重点研发计划项目(2018YFB0905200) |
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| Expansion planning of transmission network with high proportion of hydropower considering guidance of marketized electricity price signal |
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WANG Fuyang1, LIU Youbo1, XU Weiting2, GOU Jing2, LIU Fang2, SU Yunche2, LIU Junyong1
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1.College of Electrical Engineering, Sichuan University, Chengdu 610065, China;2.Economic and Technological Research Institute of State Grid Sichuan Electric Power Company, Chengdu 610041, China
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| Abstract: |
| The traditional power grid expansion planning model is difficult to reflect the quantitative impact of global supply and demand situation on investment income of power grid, willingness of market entities and social benefit under the competitive market mode for a period of time in the future, and the network congestion and transaction surplus problems in transmission network with high proportion of hydropower caused by the mismatch between the capacity of hydropower transmission section and the difference between power flows in wet and dry seasons are increasingly serious, for which, an expansion planning model of transmission network under the scenario with high proportion of hydropower is proposed considering guidance of marketized electricity price signal. The upper layer model takes the maximum annual line investment income as its objective function to form the planning decision lines. The lower layer model adopts the improved k-means clustering algorithm to obtain the typical annual operation mode of transmission network with high proportion of hydropower, quantifies load increment and network utilization rate after line planning based on the clearing results of market transaction and the response characteristic of regional load, and guides the expansion planning of power grid with the marketized electricity price signal to promote regional hydropower consumption. KKT optimal conditions are used to realize the coupling of the upper and lower layer models, and the bi-level programming problem is transformed into a mixed integer programming problem for solution. A practical power grid with high proportion of hydropower in southwest China is taken as an example, and the impact of market signal on the expansion planning results under high proportion of hydropower integration is verified by comprehensive comparison of congestion surplus, investment income and proportion of hydropower consumption among different planning methods. |
| Key words: expansion planning hydropower consumption congestion surplus price elasticity locational marginal price |
