Unified Power Flow Calculation Method of Flexible Interconnected Distribution Network Based on Modified Augmented Nodal Equation

被引：0
|
作者：
Dong B. [1 ]
Li P. [1 ]
Fu X. [1 ]
Yu H. [1 ]
Song Y. [2 ]
Wang C. [1 ]
机构：
[1] Key Laboratory of the Ministry of Education on Smart Power Grids, Tianjin University, Tianjin
[2] State Grid Economic and Technological Research Institute Co., Ltd., Beijing
来源：
Dianli Xitong Zidonghua/Automation of Electric Power Systems | 2021年 / 45卷 / 08期
基金：
中国国家自然科学基金;
关键词：
Flexible distribution network; Modified augmented nodal equation; Power electronic equipment; Power flow calculation;
D O I：
10.7500/AEPS20210104005
中图分类号：
学科分类号：
摘要：
The DC links might be coupled with AC power grids in the form of a large number of dispersive converters in the future flexible distribution network. It will be more applicable to establish a unified and simultaneous power flow model for accurate and effective solution of the system. A power flow calculation method for flexible distribution networks based on modified augmented nodal equations is proposed. Firstly, the network models of AC and DC power grids and the power flow constraints of nodes with different types are established. Secondly, the electronic equipment models of multiple modes including converters and soft open points as coupling links are considered. Finally, the modified augmented nodal equation of power flow calculation in the flexible distribution network is formed, and the Newton-Raphson method is used to solve the model. The effectiveness of proposed method is verified on the modified IEEE 123-bus flexible distribution network. The proposed method is appropriate for the time-series power flow calculation in multiple operation modes. © 2021 Automation of Electric Power Systems Press.
引用
收藏
页码：22 / 31
页数：9
相关论文
共 28 条
  • [1] WANG Chengshan, SONG Guanyu, LI Peng, Et al., Research and prospect for soft open point based flexible interconnection technology for smart distribution network, Automation of Electric Power Systems, 40, 22, pp. 168-175, (2016)
  • [2] XIAO Jun, GANG Fayun, JIANG Xun, Et al., Flexible distribution network: definition, morphology and operation mode, Power System Technology, 41, 5, pp. 1435-1442, (2017)
  • [3] JI Yirun, YUAN Zhichang, ZHAO Jianfeng, Et al., A suitable voltage control strategy for DC distribution power network, Proceedings of the CSEE, 36, 2, pp. 335-341, (2016)
  • [4] SONG Qiang, ZHAO Biao, LIU Wenhua, Et al., An overview of research on smart DC distribution power network, Proceedings of the CSEE, 33, 25, pp. 9-19, (2013)
  • [5] QI Qi, JIANG Qirong, XU Yanping, Research status and development prospect of flexible interconnection for smart distribution networks, Power System Technology, 44, 12, pp. 4664-4676, (2020)
  • [6] LI Chuandong, WANG Jianming, YIN Yonghua, Research of power flow simultaneous algorithm for power system with VSC-MTDC, Power System Technology, 40, 4, pp. 1025-1029, (2016)
  • [7] JI Xingquan, CHEN Dehua, ZHANG Wei, Et al., VSC-MTDC based three-phase unbalanced power flow calculation algorithm for AC/DC hybrid distribution network, Automation of Electric Power Systems, 43, 3, pp. 169-177, (2019)
  • [8] AHMED H M A, ELTANTAWY A B, SALAMA M., A generalized approach to the load flow analysis of AC-DC hybrid distribution systems, IEEE Transactions on Power Systems, 33, 2, pp. 2117-2127, (2017)
  • [9] KHAN S, BHOWMICK S., A generalized power-flow model of VSC-based hybrid AC-DC systems integrated with offshore wind farms, IEEE Transactions on Sustainable Energy, 10, 4, pp. 1775-1783, (2018)
  • [10] WU Zhiyuan, YIN Zhenggang, TANG Xisheng, An AC/DC decoupled hybrid power flow algorithm for hybrid power system, Proceedings of the CSEE, 36, 4, pp. 937-944, (2016)
123