Distributed Algorithm for Optimal Power Flow Pursuit by Photovoltaic Inverters in Distribution Systems

被引：0
|
作者：
Li K. [1 ]
Han X. [1 ]
Li H. [2 ]
Li W. [2 ]
机构：
[1] Key Laboratory of Power System Intelligent Dispatch and Control, Ministry of Education (Shandong University), Jinan, 250061, Shandong
[2] State Grid Shandong Electric Power Research Institute, Jinan, 250003, Shandong
来源：
Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering | 2019年 / 39卷 / 03期
基金：
中国国家自然科学基金;
关键词：
Distributed algorithm; Distributed photovoltaic system; Distribution network; Optimal power flow; Voltage regulation;
D O I：
10.13334/j.0258-8013.pcsee.180341
中图分类号：
学科分类号：
摘要：
This paper considered the real-time optimal power flow control of distributed photovoltaic inverters in distribution networks with well-developed measurement and communication technologies. A time-varying, linear optimization method was proposed for higher accuracy and computation speed, where Taylor expansion was used to linearize the objective function and constraints under the premise of small variable changes during the short control period, which makes the optimal problem linear. This time-varying linear approximation is more accurate than the constant linearization. By leveraging the so-called alternating direction method of multipliers, a distributed control method was then conducted to overcome the difficulties arising from the centralized calculation. Applying the distributed control method makes distributed photovoltaic inverter controllers capable of optimizing their own power setpoints with only a little information obtained from neighbor nodes. Case study demonstrates that distribution networks will be more efficient and economical by adopting the real-time control method proposed in this paper. © 2019 Chin. Soc. for Elec. Eng.
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页码：711 / 720
页数：9
相关论文
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