A New Power Flow Method Solving DG Integrated Distribution System

Abstract:

With the fast developing on distributed generations (DGs) integrating into distribution system, it changes power flow direction in tree-topology, as a result of which traditional power flow method is not effective for this new scene. It is necessary to make improvement on traditional method in order to accelerate the speed of power flow calculation. Since fast decoupled method is not suitable for system with a high R/X ratio, its need to make compensation for the branches to increase R/X ratio. DGs are integrated into power gird normally by inverter interfaced mode or direct grid-connected mode. In this paper, a new fast decoupled power flow method is proposed which could solve various DGs integrated into distribution network, as well as loop topology of distribution system. The utility of proposed method is tested by simulations of IEEE 69-bus system.

• Periodical: Applied Mechanics and Materials (Volumes 380-384)
• Pages: 2977-2981
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.380-384.2977
• Online since: August 2013
• Authors: Yue Feng Lu, Shao Hua Lin, Wei Zhou, Hai Tao Li
• Keywords: Compensation Ratio, Distribution System, Fast Decoupled Method

References

[1] Xiao Shijie. Consideration of Technology for Constructing Chinese Smart Grid. Automation of Electric Power Systems, 2009, 9(33): 1-4.

[2] Liang Caihao, Duan Xianzhong. Distributed Generation and its Impaction Power System. Automation of Electric Power Systems, 2001, 25(12): 53-56.

[3] Puttgen H B, Macgregor P R, Lambert F C. Distributed Generation: Semantic Hypeor the Dawn of a New Era. IEEE Power and Energy Magazine, 2003, 1(1): 22-29.

DOI: 10.1109/mpae.2003.1180357

[4] Wang Caisheng, Nehrir M H. Analytical Approaches for Optimal Placement of Distribution Generation Sources in Power Systems. IEEE Trans on Power Systems, 2004, 19(4): 2068-(2076).

DOI: 10.1109/tpwrs.2004.836189

[5] Wang Zhiqun, Zhu Shouzhen, Zhou Shuangxi, et al. Impacts of Distributed Generation on Distribution System Voltage Profile. Automation of Electric Power System, 2004, 28(16): 56-60.

[6] NAKA S, GENJI T, FUKUYAMA Y. Practical equipment models for fast distribution power flow considering interconnection of distributed generators. IEEE Power Engineering Society Summer Meeting. Vancouver, 2001: 1 - 6.

DOI: 10.1109/pess.2001.970196

[7] Chen Haiyan, Chen Jinfu, Duan Xianzhong. Study on Power Calculation of Distribution System with DGs. Automation of Electric Power System, 2006, 30(1): 35-40.

DOI: 10.1109/pes.2006.1709198

[8] Wang Shouxiang, Huang Lijuan, Wang Chengshan, et al. Unbalanced Three-phase Power Flow Calculation for Distributed Power Generation System. Electric Power Automation Equipment, 2007, 27(8): 11-15.

[9] Zhang Limei, Tang Wei. Distribution Network Power Flow Calculation Considering DG Integration with Forward and Backward Substitution Method. Transactions of China Electrotechnical Society, 2010, 25(8): 123-130.

[10] Dai Jiang, Wang Shao, Zhu Jinfeng. Power Flow Calculation of DG Integrated Weakly-looped Distribution Network. Power System Protection and Control, 2011, 39(10).

[11] Zhu Xingyang, Zhang Jianhua, Liu Wenxia. DG Integrated Distribution Network Power Flow Calculation Considering the Static Characteristics of Load Voltage, 2012, 36(2).