| 引用本文: | 孙伟卿,田坤鹏,谈一鸣,叶磊.考虑灵活性需求时空特性的电网调度计划与评价[J].电力自动化设备,2018,(7): |
| SUN Weiqing,TIAN Kunpeng,TAN Yiming,YE Lei.Power grid dispatching plan and evaluation considering spatial and temporal characteristics of flexibility demands[J].Electric Power Automation Equipment,2018,(7): |
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| 摘要: |
| 高比例可再生能源频繁波动使得电网调度更加复杂，因此需充分发挥电网灵活性资源的调节作用。在考虑灵活性需求时空二维特性以及调度计划灵活性的基础上，提出以爬坡时间裕度作为衡量机组爬坡能力的指标，并采用标准差描述爬坡时间裕度的均匀性；建立同时考虑均匀性和经济性的多目标优化调度模型；对调度方案进行灵活性评价，形成具有卡尺功能的电网灵活性评价图，对于多样化的灵活性需求，可在评价图上快速定位相应的调度方案，并判断是否存在消纳不足问题。IEEE 30节点系统算例仿真结果表明，均匀性对于提高电力系统灵活性具有重要意义，验证了面对不同灵活性需求给出合理调度方案的可行性与有效性。 |
| 关键词: 可再生能源 需求分析 灵活性 均匀性 调度计划 模型 |
| DOI：10.16081/j.issn.1006-6047.2018.07.023 |
| 分类号:TM73 |
| 基金项目:国家自然科学基金资助项目(51407117)；上海市“扬帆计划”项目(14YF1410100) |
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| Power grid dispatching plan and evaluation considering spatial and temporal characteristics of flexibility demands |
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SUN Weiqing, TIAN Kunpeng, TAN Yiming, YE Lei
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School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
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| Abstract: |
| The frequent fluctuation of high penetration renewable energy makes the power grid dispatching more complicated, so it is necessary to make full use of the regulation effect of flexibility resources in the power grid. Conside-ring the two-dimensional time-space characteristics of flexibility demands and the flexibility of dispatching plan, the ramping time margins are proposed as the indexes to measure the ramping capability of the units, and the standard deviations are adopted to describe the uniformity of the indexes. A multi-objective optimal dispatching model with the consideration of the uniformity and economy is established. The flexibility of the dispatching schemes is evaluated to form the flexibility evaluation diagram of power grid with caliper function. The dispatching schemes can be fast located in the diagram according to the diverse flexibility demands, and whether there is a problem of insufficient consumption can be judged. The simulative results of IEEE 30-bus system case show that the uniformity is important for improving the flexibility of power system, and it is feasible and effective to obtain reasonable dispatching schemes for different flexible demands. |
| Key words: renewable energy demand analysis flexibility uniformity dispatching plan models |
