Two-stage power control method of rotary power flow controller for flexible interconnection of distribution network

IF 2.6 4区 工程技术 Q3 ENERGY & FUELS
Chen Shao, Xiangwu Yan, Abubakar Siddique, Waseem Aslam, Jiaoxin Jia, Wenqiang Xie, Salman A. Alqahtani, Atif M. Alamri
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Abstract

With the rapid development of active distribution network construction, flexible interconnected distribution networks have become the mainstream power supply structure. To ensure the safe power supply of the distribution system, power control methods suitable for flexible interconnected distribution networks should be further studied. The electromagnetic rotating power flow controller (RPFC) is a feasible solution for power control in distribution networks. This paper first constructs an RPFC steady-state power decoupling control model based on instantaneous reactive power theory. However, it is difficult to achieve stable power control due to the difficulty of coordinated control of the rotor position angle of the rotating phase transfer transformer. On this basis, the servo motor's two-stage speed control and speed coordination scheme are used to achieve stable and error-free control of the two rotor angles, meeting the power regulation requirements of high precision, high reliability, and fast response. A 380 V/40 kVA RPFC prototype and experimental platform were developed, and power regulation and power equalization experiments were conducted. The results indicate that the proposed control scheme can regulate at the second level. Control accuracy is maintained within 4%, showing good dynamic and static performance. This meets the requirements for flexible closed-loop operation in the interconnected distribution network.

用于配电网灵活互联的旋转式功率流控制器的两级功率控制方法
随着主动配电网建设的快速发展,柔性互联配电网已成为主流供电结构。为确保配电系统的安全供电,应进一步研究适合柔性互联配电网的功率控制方法。电磁旋转功率流控制器(RPFC)是配电网功率控制的可行方案。本文首先基于瞬时无功功率理论构建了 RPFC 稳态功率解耦控制模型。然而,由于难以协调控制旋转换相变压器的转子位置角,因此难以实现稳定的功率控制。在此基础上,采用伺服电机的两级速度控制和速度协调方案,实现了两个转子角度的稳定无误控制,满足了高精度、高可靠性和快速响应的功率调节要求。研制了 380 V/40 kVA RPFC 原型和实验平台,并进行了功率调节和功率均衡实验。结果表明,所提出的控制方案可以实现二级调节。控制精度保持在 4% 以内,显示出良好的动态和静态性能。这满足了互联配电网中灵活闭环运行的要求。
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来源期刊
IET Renewable Power Generation
IET Renewable Power Generation 工程技术-工程:电子与电气
CiteScore
6.80
自引率
11.50%
发文量
268
审稿时长
6.6 months
期刊介绍: IET Renewable Power Generation (RPG) brings together the topics of renewable energy technology, power generation and systems integration, with techno-economic issues. All renewable energy generation technologies are within the scope of the journal. Specific technology areas covered by the journal include: Wind power technology and systems Photovoltaics Solar thermal power generation Geothermal energy Fuel cells Wave power Marine current energy Biomass conversion and power generation What differentiates RPG from technology specific journals is a concern with power generation and how the characteristics of the different renewable sources affect electrical power conversion, including power electronic design, integration in to power systems, and techno-economic issues. Other technologies that have a direct role in sustainable power generation such as fuel cells and energy storage are also covered, as are system control approaches such as demand side management, which facilitate the integration of renewable sources into power systems, both large and small. The journal provides a forum for the presentation of new research, development and applications of renewable power generation. Demonstrations and experimentally based research are particularly valued, and modelling studies should as far as possible be validated so as to give confidence that the models are representative of real-world behavior. Research that explores issues where the characteristics of the renewable energy source and their control impact on the power conversion is welcome. Papers covering the wider areas of power system control and operation, including scheduling and protection that are central to the challenge of renewable power integration are particularly encouraged. The journal is technology focused covering design, demonstration, modelling and analysis, but papers covering techno-economic issues are also of interest. Papers presenting new modelling and theory are welcome but this must be relevant to real power systems and power generation. Most papers are expected to include significant novelty of approach or application that has general applicability, and where appropriate include experimental results. Critical reviews of relevant topics are also invited and these would be expected to be comprehensive and fully referenced. Current Special Issue. Call for papers: Power Quality and Protection in Renewable Energy Systems and Microgrids - https://digital-library.theiet.org/files/IET_RPG_CFP_PQPRESM.pdf Energy and Rail/Road Transportation Integrated Development - https://digital-library.theiet.org/files/IET_RPG_CFP_ERTID.pdf
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