Optimization for Unit Commitment Considering Operational Flexibility of Back-to-Back VSC-HVDC

被引：0
|
作者：
Zhai H. [1 ]
Li B. [2 ]
Ma Q. [2 ]
Wang Z. [2 ]
Liu C. [2 ]
Zhou B. [1 ]
Zhou X. [2 ]
机构：
[1] Electric Power Research Institute of China Southern Power Grid, Guangdong Province, Guangzhou
[2] Power Dispatching & Communication Center of China Southern Power Grid, Guangdong Province, Guangzhou
来源：
Dianwang Jishu/Power System Technology | 2024年 / 48卷 / 06期
关键词：
back-to-back VSC-HVDC; electricity market; equivalent virtual unit; power flip; unit commitment;
D O I：
10.13335/j.1000-3673.pst.2023.0979
中图分类号：
学科分类号：
摘要：
Due to the promising advantages of reducing short-circuit currents and achieving fast power flow reversal, the back-to-back voltage source-converter-based high voltage direct current (VSC-HVDC) is gradually being applied to deal with the practical power system problems. However, the study on the back-to-back VSC-HVDC-embedded power system decision-making issues is still very limited. This paper, closely combining the practical engineering background and taking a typical unit commitment problem in power systems as an example, proposes an optimization method for the unit commitment that fully takes into account the operational flexibility of back-to-back VSC-HVDC. Firstly, a back-to-back VSC-HVDC model based on the equivalent virtual generators is introduced, incorporating various control requirements for power adjustment during operation. This model encompasses constraints of power adjustment directions, adjustment times, power flip requirements, and power delivery modes. It not only avoids the issue of shortened lifespan due to frequent device operations but also guarantees the on-site practical feasibility of model optimization results. Secondly, a unit commitment model considering the back-to-back VSC-HVDC is presented, and the corresponding reformulation method is given. Finally, the effectiveness of the proposed model is verified by the modified IEEE 14-bus, the IEEE 118-bus, and a certain power grid test systems in China. The simulation results show that the developed model is able to improve the economy of system operations while ensuring safety. © 2024 Power System Technology Press. All rights reserved.
引用
收藏
页码：2660 / 2669
页数：9
相关论文
共 26 条
  • [1] Liu YANG, ZHU Zhe, HOU Ting, Technology of back-to-back DC transmission system and its application in Luxi asynchronous interconnection project[J], Southern Power System Technology, 12, 4, pp. 1-6, (2018)
  • [2] CHEN Mingquan, Direct current system protection configuration scheme and test technology study of Fujian-Guangdong networking project[J], Electric Engineering, 2022, 19, pp. 64-69
  • [3] ZOU Changyue, WEI Ronghui, FENG Junjie, Development status and application prospect of VSC-HVDC[J], Southern Power System Technology, 16, 3, pp. 1-7, (2022)
  • [4] GUO Mingqun, MEI Nian, LI Tan, System design of ±500kV Zhangbei VSC-based DC grid project[J], Power System Technology, 45, 10, pp. 4194-4204, (2021)
  • [5] ZHENG Wei, GUO Jianbao, YANG Guangyuan, A practical model suitable for DC fault simulation of a multi terminal DC transmission system[J], Power System Protection and Control, 50, 12, pp. 180-187, (2022)
  • [6] RAO Hong, ZHOU Yuebin, LI Weiwei, Engineering application and development prospect of VSC-HVDC transmission technology[J], Automation of Electric Power Systems, 47, 1, pp. 1-11, (2023)
  • [7] HE Shizhi, HE Xianglu, LOU Suhua, Key monitoring indicators and market power analysis in“monthly settlement”trial operation of southern china electricity spot market (starting with Guangdong province)[J], Power System Technology, 47, 1, pp. 175-184, (2023)
  • [8] Nan YANG, DONG Zhenqiang, WU Lei, A comprehensive review of security-constrained unit commitment[J], Journal of Modern Power Systems and Clean Energy, 10, 3, pp. 562-576, (2022)
  • [9] SUN Yan, CHEN Yan, MO Dong, Joint chance constrained unit commitment with wind farms based on risk sharing[J], Power System Technology, 46, 8, pp. 2996-3006, (2022)
  • [10] HAO Guangtao, HAN Xueshan, LIANG Jun, Review of dispatch and control methods for tradition power system and high-rate renewable energy generation power system[J], Proceedings of the CSU-EPSA, 32, 9, pp. 10-19, (2020)
123