Development of an Integrated Power Distribution System Laboratory Platform Using Modular Miniature Physical Elements: A Case Study of Fault Location
Development of an Integrated Power Distribution System Laboratory Platform Using Modular Miniature Physical Elements: A Case Study of Fault Location
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使用模块化微型物理元件开发综合配电系统实验室平台：故障定位案例研究
DOI：
10.3390/en12193780
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发表时间：
2019-10
期刊：
影响因子：
3.2
通讯作者：
Bian Xinhao
中科院分区：
文献类型：
--
作者：
Tang Jinrui;Xiong Binyu;Yang Chen;Tang Cuilan;Li Yang;Su Guoxing;Bian Xinhao
基于软件的电力工程教育的主要缺点是缺乏对现象的物理理解和实践经验。现有的小型化模拟教育电源系统平台成本高、操作复杂、体积庞大，无法广泛应用于高校实验。本文提出了一种使用模块化微型物理元件的集成配电系统实验室平台（PDSLP）。建议使用印刷电路板（PCB）和微电子技术来构造每个物理元件。此外，所构建的物理元件用于建立基于模块化组装技术的集成PDSLP。所提出的具有成本效益的PDSLP的尺寸显着减小，并且由于缩短了信号传输路径并且减少了焊接点的数量，所以所提出的PDSLP的可靠性可以大大提高。选择用于中性点非有效接地配电系统（NGDS）中的故障定位的 PDSLP 作为典型的实验场景，随后实施并讨论了一个具有三个馈线的小型配电网络。当发生单相接地故障时，我们提出的 PDSLP 测量的零序电流可以揭示故障产生信号的真实特征，包括零序电流的稳态和暂态特性。它们可以很容易地观察并用于学生设计相应的故障定位算法。模块化可再生能源和其他元件可以被设计、实施并集成到拟议的平台中，用于未来主动配电网络的实验室教育。
The main shortcomings of the software-based power engineering education are a lack of physical understanding of phenomena and hands-on experience. Existing scaled-down analogous educational power system platforms cannot be widely used for experiments in universities due to the high cost, complicated operation, and huge size. An integrated power distribution system laboratory platform (PDSLP) using modular miniature physical elements is proposed in this paper. The printed circuit board (PCB) and microelectronic technology are proposed to construct each physical element. Furthermore, the constructed physical elements are used to set up an integrated PDSLP based on modular assembly technology. The size of the proposed cost-efficient PDSLP is significantly reduced, and the reliability of the proposed PDSLP can be improved greatly because the signal transmission path is shortened and a number of welding points are reduced. A PDSLP for fault location in neutral non-effectively grounded distribution systems (NGDSs) is selected as a typical experimental scenario and one scaled-down distribution network with three feeders is subsequently implemented and discussed. The measured zero-sequence currents by our proposed PDSLP when a single-phase earth fault occurred can reveal the true features of the fault-generated signals, including steady-state and transient characteristics of zero-sequence currents. They can be readily observed and used for students to design corresponding fault location algorithms. Modular renewable energy sources and other elements can be designed, implemented and integrated into the proposed platform for the laboratory education of the active distribution networks in the future.
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