Research on Automatic Power Flow Convergence Adjustment Method Based on Modified DC Power Flow Algorithm

被引：0

作者：

Zhang S. ^{[1
]}

Zhang D. ^{[1
]}

Huang Y. ^{[1
]}

Li W. ^{[1
]}

Chen X. ^{[1
]}

Tang Y. ^{[1
]}

机构：

[1] State Key Laboratory of Power Grid Safety and Energy Conservation, China Electric Power Research Institute, Haidian District, Beijing

来源：

Dianwang Jishu/Power System Technology | 2021年 / 45卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Intelligent optimization algorithms; Modified DC power flow; Power flow adjustment; Power flow convergence; Power system; Reinforcement learning;

D O I：

10.13335/j.1000-3673.pst.2019.1969

中图分类号：

学科分类号：

摘要：

To get convergence solution for power flow calculation, the traditional method is to manually changing the presuppositions again and again. With the increase of scale and complication of power system, it is more difficult for dispatchers and planners to get convergent power flow calculation results, which makes it necessary to implement an automatic power flow convergence adjustment method. In this paper, an automatic power flow convergence adjustment method is proposed based on modified DC power flow algorithm. Due to the weak coupling characteristics in power flow calculation of high-voltage grid, the active and the reactive power were adjusted separately. For adjusting the active power, an index of fractional active power balance was proposed based on modified DC power flow algorithm. For the adjustment of the reactive power, a virtual reactive power grid and an index of fractional reactive power balance were proposed. Both the active and reactive power were adjusted using intelligent optimization algorithm or reinforcement learning for the power flow convergence restoration. Simulations in the IEEE 118-bus system and the real power system have proved the feasibility and effectiveness of the proposed method. © 2021, Power System Technology Press. All right reserved.

引用

页码：86 / 97

页数：11

共 29 条

[1] Overbye T J., A power flow measure for unsolvable cases[J], IEEE Transactions on Power Systems, 9, 3, pp. 1359-1365, (1994)
[2] Overbye T J., Computation of a practical method to restore power flow solvability[J], IEEE Transactions on Power Systems, 10, 1, pp. 280-287, (1995)
[3] Li Min, Chen Jinfu, Chen Haiyan, Et al., Load flow regulation for unsolvable cases in a power system, Automation of Electric Power Systems, 30, 8, pp. 11-15, (2006)
[4] Yu Erkeng, Pan Yi, Wang Xianrong, Et al., Practical improvements upon convergence of load flow calculation, Power System Technology, 19, 1, pp. 23-26, (1995)
[5] Wang Yi, Hou Junxian, Ma Shiying, Et al., A method of automatic integration and regulation of power flow data for security and stability check of generation scheduling analysis, Power System Technology, 34, 4, pp. 100-104, (2010)
[6] Zhang Yuechi, Liu Benxi, Luo Bin, Et al., PSD-BPA based automatic integration and adjustment method of power grid operation plan data, Automation of Electric Power Systems, 41, 1, pp. 102-108, (2017)
[7] An Jun, Song Junda, Ge Weichun, Convergence identification and adjustment method of power flow calculation for large-scale power system, Electric Power Automation Equipment, 40, 2, pp. 103-109, (2020)
[8] Wang Hongfu, Tao Xianghong, Li Baiqing, Et al., An approximate power flow model based on virtual midpoint power, Proceedings of the CSEE, 38, 21, pp. 6305-6313, (2018)
[9] Barboza L V, Salgado R., Restoring solutions for unsolvable cases via minimum load shedding for a specified direction, Proceedings of 22nd IEEE Power Engineering Society International Conference on Power Industry Computer Applications, (2001)
[10] Barboza L V, Salgado R., Unsolvable power flow analysis-an approach based on interior point nonlinear optimization methods, Proceedings of IEEE Porto Power Tech Conference, (2001)

← 1 2 3 →