Auto-generation of Phase-separated Connection Diagram for Asymmetry Perceptible Low-voltage Distribution Network

被引：0
|
作者：
Zhang J. [1 ]
Xia Y. [1 ]
Ni L. [2 ]
Hu Y. [2 ]
Yang S. [2 ]
Qiu C. [1 ]
机构：
[1] School of Automation, Hangzhou Dianzi University, Hangzhou
[2] Electric Power Research Institute of State Grid Zhejiang Electric Power Co., Ltd., Hangzhou
来源：
Zhang, Jianmin (zhangjmhzcn@hdu.edu.cn) | 2020年 / Automation of Electric Power Systems Press卷 / 44期
基金：
中国国家自然科学基金;
关键词：
Auto-generation; Load asymmetry; Phase-separated connection diagram; Situation visualization; Transformer centralized low-voltage distribution network; Whole phase virtual connection diagram; Wiring asymmetry;
D O I：
10.7500/AEPS20190627003
中图分类号：
学科分类号：
摘要：
Situation visualization is a core technology for monitoring and management of low-voltage distribution network (LVDN). Therefore, a new concept of transformer centralized low-voltage distribution network (TCDN) is suggested as an object and target to guide corresponding research and engineering application. Auto-generation of a clear and beautiful phase-separated connection diagram becomes a pre-condition for situation visualization. For wiring asymmetry and load asymmetry being core characteristics of LVDN, two types of situation-oriented connection diagrams are designed. An auto-generation principle is proposed for phase-separated connection diagram of TCDN, so that not only the connection symmetry of three-phase four-wire main branches and the connected three-phase customers is guaranteed, but also the connection asymmetry caused by single-phase two-wire customers can be clearly perceived. For the proposed whole phase virtual connection diagram, based on the provided parameters of fan-shape layout and the arrangement order of each wiring harness, the initial layout and routing methods for each wiring harness by in-out zooming and rotating algorithm are proposed to yield an initial diagram, followed by further force-direction based beautifying algorithm to generate a nice connection diagram. The generated whole phase virtual connection diagram will be finally disassembled into the phase-separated connection diagrams according to the proposed auto-generation principle. The case study verifies the efficiency and effectivity of the proposed algorithm. Moreover, the time sequence pictures of voltage profile based on the generated phase-separated connection diagram show a very good perceptible understanding of dynamic operation characteristics of TCDN caused by variations of power outputs from single-phase household photovoltaics and power assumptions from single-phase and three-phase load. © 2020 Automation of Electric Power Systems Press.
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页码：143 / 149
页数：6
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