Evaluation and expansion planning method of a power system considering flexible carrying capacity

被引：0
|
作者：
Lin Z. [1 ]
Li H. [1 ]
Su Y. [2 ]
Gou J. [2 ]
机构：
[1] Intelligent Electric Power Grid Key Laboratory of Sichuan Province (Sichuan University), Chengdu
[2] State Grid Economic and Technological Research Institute of Sichuan Province, Chengdu
来源：
Dianli Xitong Baohu yu Kongzhi/Power System Protection and Control | 2021年 / 49卷 / 05期
关键词：
Flexibility carrying capacity; High-penetration renewable energy sources; Line carrying capacity; Power grid planning;
D O I：
10.19783/j.cnki.pspc.200602
中图分类号：
学科分类号：
摘要：
Flexibility assessment and planning have become the core and key of a power system which has a high proportion of renewable energy. The existing research on flexibility mainly focuses on the matching level of flexible supply and demand, which ignores the impact of line carrying capacity on flexible supply and the demand transmission process. In view of this, first, a flexible supply and demand transmission model of a power system is established by analyzing the transmission process of flexibility at the line level. Then, the concept and measurement index of flexible carrying capacity are proposed. On this basis, the evaluation method of supply and demand balance considering flexible carrying capacity is proposed. The analysis of the causes of the lack of flexibility and identification of the weak links of the system can be handled through this method. Finally, a two-stage expansion planning method based on flexibility assessment is proposed, and the validity and rationality of the method are verified by using the Garver-18 node system. The example shows that on the one hand, the flexible carrying capacity index can quantify the transmission capacity of power grid. This is more in line with the actual situation of power system. On the other hand, the proposed method can tap the potential of transmission lines, expand the flexible operation space of grid structure, and effectively improve the flexibility of the power system. © 2021 Power System Protection and Control Press.
引用
收藏
页码：46 / 57
页数：11
相关论文
共 33 条
  • [1] BAI Jianhua, XIN Songxu, LIU Jun, Et al., Roadmap of realizing the high penetration renewable energy in China, Proceedings of the CSEE, 35, 14, pp. 3699-3705, (2015)
  • [2] HAND M, BALDWIN S, DEMEO E, Et al., Renewable electricity futures study, (2014)
  • [3] TAO Hongfei, XIE Dong, ZHAO Fulin, Et al., Comprehensive identification of critical line in power systems with large-scale wind power integration, Power System Protection and Control, 48, 6, pp. 115-123, (2020)
  • [4] China 2050 high renewable energy penetration scenario and roadmap study, (2015)
  • [5] GE Weichun, TENG Jianyi, PAN Chao, Et al., Operation regulation strategy of source-storage-load with wind energy storage energy, Power System Protection and Control, 47, 13, pp. 46-53, (2019)
  • [6] LI Guodong, LI Gengyin, ZHOU Ming, Model and application of renewable energy accommodation capacity calculation considering utilization level of interprovincial tie-line, Protection and Control of Modern Power Systems, 4, 1, pp. 1-12, (2019)
  • [7] LI Yan, ZHANG Qian, LI Chen, Et al., System frequency regulation strategy of electric vehicle cluster considering wind power grid-connected model, Energy Supply Techniques of New Energy Vehicles, 2, 3, pp. 29-38, (2018)
  • [8] ULBIG A, ANDERSSON G., Analyzing operational flexibility of electric power systems, Proceedings of 2014 Power Systems Computation Conference(PSCC), (2014)
  • [9] LU Zongxiang, LI Haibo, QIAO Ying, Flexibility evaluation and supply/demand balance principle of power system with high-penetration renewable, Proceedings of the CSEE, 37, 1, pp. 9-19, (2017)
  • [10] SHI Tao, ZHU Lingzhi, YU Ruoying, Overview on power system flexibility evaluation, Power System Protection and Control, 44, 5, pp. 146-154, (2016)
1234