Applicability analysis of power flow calculation methods for AC／DC hybrid connected power grid with multi-type DC

被引：0
|
作者：
Song Z. [1 ]
Huang Y. [1 ]
Zhao H. [2 ]
Xu J. [1 ]
Zhao C. [1 ]
Jia X. [1 ]
机构：
[1] State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing
[2] Power Dispatching and Control Center of China Southern Power Grid, Guangzhou
来源：
Dianli Zidonghua Shebei/Electric Power Automation Equipment | 2024年 / 44卷 / 04期
关键词：
AC／DC hybrid connected power grid; alternating iteration algorithm; multi-type DC; power flow calculation; unified iterative al⁃ gorithm;
D O I：
10.16081/j.epae.202307004
中图分类号：
学科分类号：
摘要：
As a new stage in the development of power grid，the AC／DC hybrid connected power grid is characterized by multi-type DC participation and large-scale AC／DC interconnection. However，the applica⁃ bility of the unified iteration and alternating iteration algorithms for power flow calculation has not been deeply analyzed. Therefore，based on an AC／DC hybrid connected power grid with multi-type DC，the calcu⁃ lation performance of the two algorithms is compared and studied. The power flow model of the AC／DC hybrid connected power grid with conventional DC，flexible DC，and hybrid DC is derived，and corresponding unified iteration and alternating iteration algorithms are proposed. The effectiveness of the power flow model and the accuracy of power flow algorithms are verified by the data of three AC／DC hybrid connected power grid test systems and the actual system of China Southern Power Grid. The convergence performance and calculation speed of the two algorithms are compared and analyzed in combination with the factors such as system load level，system strength，and DC embedding scale. The research results show that during the calculative progress of large-scale AC／DC hybrid connected power grid with multi-type DC，the unified iteration algorithm has higher computational efficiency than that of the alternating iteration algorithm. © 2024 Electric Power Automation Equipment Press. All rights reserved.
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页码：190 / 196
页数：6
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