| 引用本文: | 刘乔波,谢平平,欧阳金鑫,朱继忠,熊小伏,禤培正.基于异质能源多时间尺度互补的动态经济调度策略[J].电力自动化设备,2018,(6): |
| LIU Qiaobo,XIE Pingping,OUYANG Jinxin,ZHU Jizhong,XIONG Xiaofu,XUAN Peizheng.Dynamic economic dispatch strategy based on multi time scale complementarity of heterogeneous energy sources[J].Electric Power Automation Equipment,2018,(6): |
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| 摘要: |
| 大规模新能源并网给电力系统的经济调度带来了巨大的挑战，构建互补系统联合运行可有效地提升电网对新能源的消纳能力，但是目前单一的互补系统日前调度模型没有考虑互补系统实际的互补及平抑效果。为此，提出了一种基于风光水火多时间尺度互补的动态调度策略。利用异质能源之间的互补特性将风、光、水打捆成虚拟电源(VP)，并定义负荷跟踪指标表征VP对负荷的跟踪能力，使VP出力能很好地追踪负荷曲线。建立含日前24 h计划、日内4 h滚动计划以及实时15 min计划在内的多时间尺度互补协同调度模型，设置滚动修正的弃风弃光约束，使前一尺度调度计划中弃风、弃光量更大的时段在下一尺度调度计划中具有更大的弃风、弃光上调裕度，利用不断更新的预测数据，滚动修正日前调度计划，从而始终保证VP对负荷的良好追踪，实现互补效果的最大化。通过算例验证了所提调度策略能够有效地提升互补系统实际的互补和平抑效果、减轻调度压力并且降低发电费用。 |
| 关键词: 异质能源 电源互补特性 虚拟电源 多时间尺度 滚动协调调度 经济调度策略 弃风弃光约束 |
| DOI：10.16081/j.issn.1006-6047.2018.06.009 |
| 分类号:TM734 |
| 基金项目:国家自然科学基金资助项目(51407017)；国家重点研发计划智能电网技术与装备重点专项(2016YFB0900600)；重庆市基础与前沿研究计划项目(cstc2015jcyjA90016) |
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| Dynamic economic dispatch strategy based on multi time scale complementarity of heterogeneous energy sources |
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LIU Qiaobo1, XIE Pingping2, OUYANG Jinxin1, ZHU Jizhong2, XIONG Xiaofu1, XUAN Peizheng2
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1.State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, China;2.Electric Power Research Institute, CSG, Guangzhou 510663, China
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| Abstract: |
| The grid-connection of large-scale new energy brings tremendous challenges to the economic dispatch of power system and combined operation of complementary system can effectively enhance the new energy accommodation. However, the current day-ahead dispatch models of complementary system have not considered the actual complementary and smoothing effect of the system. Thus, a dynamic dispatch strategy based on multi-time scale complementarity of wind, solar, hydro and thermal sources is proposed. The wind, solar and hydro sources are bundled as a VP(Virtual Power) according to their complementary features. The load tracking index is defined to represent the tracking ability of the VP to load so that the VP can well follow the load curves. Meanwhile, a multi-time scale complementary dispatch model is established, which includes the day-ahead 24-hour plan, the intra-day 4-hour rolling plan and the real-time 15-minute plan. Furthermore, rolling amended wind and solar curtailment constraints are set to make sure that the periods which have larger wind and solar curtailment in the previous time scale dispatch plan have greater wind and solar curtailment up-regulation margins in the next time scale dispatch plan. According to the constantly updated forecast data, the day-ahead plan is amended continually to ensure the good tracking of VP to load and maximize the complementary effect. Results of examples verify that the proposed dispatch strategy can effectively improve the actual complementary and smoothing effect of the complementary system, cope with the dispatch pressure and reduce the generation costs. |
| Key words: heterogeneous energy sources complementary characteristics of powers virtual power multi-time scale rolling coordination dispatch economic dispatch strategy wind-solar curtailment constraints |
