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GB/T 35727—2017《中低压直流配电电压导则》解读
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中国科学院电工研究所,北京市 100190

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唐西胜(1975—),男,博士,研究员,博士生导师,主要研究方向:电力电子化电力系统稳定与控制、分布式电力与储能、交直流微电网等。E-mail:tang@mail.iee.ac.cn

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Interpretation of GB/T 35727—2017 Guideline for Standard Voltages of Medium andLow Voltage DC Distribution System
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Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190, China

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    摘要:

    随着直流变流技术的发展,以及直流配电应用需求的增加,直流配电系统得到了广泛的重视与发展。中国国家标准GB/T 35727—2017《中低压直流配电电压导则》的制定,明确了直流配电的电压等级这一供电模式的核心要素,对直流配电的发展具有重要意义。介绍了标准制定的背景,对中压直流标称电压、低压直流标称电压、允许电压偏差范围等参数的选择依据进行了分析说明。提出以负荷距为指标的直流配电系统供电模式分析方法,将电压等级、允许偏差、线路参数、输送容量等进行联动,为直流配电系统供电模式的分析设计提供支持。

    Abstract:

    With the development of DC conversion technologies and the practical need for DC power supply, DC distribution systems attracts more and more attentions around the world. Furthermore, the national criterion GB/T 35727—2017 of China for standard voltages of medium and low voltage dc distribution system is published recently, which is very important for the development of DC distribution system since voltage levels and series are the key points for power system research and design. The background of this criterion is introduced in this paper, followed with the main parts of medium-level nominal voltages, low-level nominal voltages and the corresponding permitted voltage deviations with main factors considered. Finally,this paper puts forward a power supply mode analysis method of DC distribution system based on load distance, which links voltage level, allowable deviation, line parameters, transmission capacity, etc. to provide support for the analysis and design of power supply mode of DC distribution system.

    表 2 中压直流配电系统的标称电压Table 2 Normal system voltage for medium voltage DC distribution system
    表 6 750(±375)V和220(±110)V架空直流线路截面负荷距Table 6 Load distance for 750(±375)V and 220(±110)V overhead DC line
    表 1 直流配电相关国家及行业标准Table 1 National and industrial standards for DC distribution
    表 5 ±3 kV,3(±1.5)kV,1.5(±0.75)kV架空直流线路截面负荷距Table 5 Load distance for ±3 kV, 3(±1.5)kV and 1.5(±0.75)kV overhead DC line
    表 3 低压直流配电系统的标称电压Table 3 Normal system voltage for low voltage DC distribution system
    图1 直流配电标准规范内容Fig.1 Main contents of DC distribution system criterion
    表 4 ±35 kV和±10 kV架空直流线路截面负荷距Table 4 Load distance for ±35 kV and ±10 kV overhead DC line
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引用本文

唐西胜.GB/T 35727—2017《中低压直流配电电压导则》解读[J].电力系统自动化,2020,44(1):23-28. DOI:10.7500/AEPS20190312009.
TANG Xisheng.Interpretation of GB/T 35727—2017 Guideline for Standard Voltages of Medium andLow Voltage DC Distribution System[J].Automation of Electric Power Systems,2020,44(1):23-28. DOI:10.7500/AEPS20190312009.

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  • 收稿日期:2019-03-12
  • 最后修改日期:2019-08-05
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  • 在线发布日期: 2020-01-04
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