| 引用本文: | 李林威,林 伟,杨知方,等.考虑多时段耦合特性的联络线功率可行域确定方法[J].电力系统保护与控制,2020,48(23):64-72. |
| LI Linwei,,LIN Wei,YANG Zhifang,et al.Characterizing a tie-line transfer capacity region considering time coupling in day-ahead multi-period dispatch[J].Power System Protection and Control,2020,48(23):64-72 |
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| 摘要: |
| 为了解决现有方法未计及多时段耦合特性、无法准确刻画联络线功率可行域的不足，提出一种考虑多时段耦合特性的联络线功率可行域确定新方法。所提方法可考虑火电机组多时段爬坡耦合约束，基于时段聚类思想，将多时段联络线功率可行域解耦降维表征，缓解了现有方法在高维联络线功率可行域刻画中的计算量爆炸问题，从而有效刻画联络线功率可行域。同时，为推动电力资源的广域优化配置，研究分析了以火电机组深度调峰为代表的弹性资源对多时段联络线功率可行域的影响。以IEEE 30—IEEE RTS96节点联合算例的仿真分析验证了所提方法的有效性和准确性。 |
| 关键词: 联络线功率可行域 日前调度多时段耦合特性 时段聚类 弹性资源 |
| DOI：DOI: 10.19783/j.cnki.pspc.200030 |
| 分类号: |
| 基金项目:国家自然科学基金青年科学基金项目(51807014)；国家电网公司管理咨询项目(SGTYHT/17-WT-231)；重庆市自然科学基金博士后科学基金项目(cstc2019jcyj-bshX0081) |
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| Characterizing a tie-line transfer capacity region considering time coupling in day-ahead multi-period dispatch |
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LI Linwei, LIN Wei, YANG Zhifang, YU Juan, XIA Shaolian, WANG Yang
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(1. School of Electrical Engineering, Chongqing University, Chongqing 400044, China; 2. Central China Branch of State
Grid Company, Wuhan 430077, China; 3. Beijing TsIntergy Technology Co., Ltd., Beijing 100084, China)
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| Abstract: |
| There is a problem that the existing methods do not consider time coupling in the day-ahead multi-period dispatch. This leads to the accuracy loss in the tie-line power transfer capability region. A new method to determine the tie-line transfer capacity region considering time coupling in day-ahead multi-period dispatch is proposed. The proposed method considers multi-period ramping constraints. Based on time period aggregations, the multi-period tie-line power transfer region can be represented by decoupling and dimensionality reduction, which alleviates a heavy computational burden brought by existing methods applied in determining a high-dimensional tie-line power transfer region. Compared with existing studies, the proposed method can provide a more accurate tie-line power transfer region. At the same time, in order to promote the cross-region optimal utilization further, it takes the depth peaking of thermal power units as the representative to investigate the influence of the flexible resources on the multi-period tie-line transfer capacity region. The validity and effectiveness of the proposed method are verified by the joint case IEEE 30—IEEE RTS96-bus test system.
This work is supported by Youth Science Fund of National Natural Science Foundation of China (No. 51807014), Management Consulting Project of State Grid Corporation of China (No. SGTYHT/17-WT-231), and Postdoctoral Science Fund for Natural Science Foundation of Chongqing (No. cstc2019jcyj-bshX0081). |
| Key words: tie-line transfer capacity region time coupling in the day-ahead multi-period dispatch period aggregation flexible resources |
