Suzhou Electric Appliance Research Institute
期刊号: CN32-1800/TM| ISSN1007-3175

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柔性直流技术在配电网中的应用及运行控制

来源:电工电气发布时间:2023-02-07 08:07 浏览次数:344

柔性直流技术在配电网中的应用及运行控制

黄素娟1,吴爽2,冯秋侠2
(1 南京工业大学浦江学院,江苏 南京 211200;
2 南瑞集团有限公司,江苏 南京 211106)
 
    摘 要:柔性直流技术应用于配电网可提高配电网的可靠性和灵活性。结合苏州工业园区两端口柔性直流互联的交直流混合配电网,分析了该区域在正常和故障情况下的运行控制策略。正常情况下,采用集中-分区的控制层级模式,利用柔性直流的运行特性和微电网控制技术,支撑新能源消纳、重载风险消除等多个场景。故障情况下,基于柔性直流带无源负荷的供电能力分析模型,通过配网主站系统、柔性直流控制系统和保护装置的协同配合,实现配电网故障的快速处置。
    关键词: 柔性直流;配电网;协调控制;故障处置
    中图分类号:TM727     文献标识码:B     文章编号:1007-3175(2023)01-0034-05
 
Application and Operation Control of Flexible DC
Interconnection in Distribution Network
 
HUANG Su-juan1, WU Shuang2, FENG Qiu-xia2
(1 Nanjing Tech University Pujiang Institute, Nanjing 211200, China;
2 Nari Group Corporation, Nanjing 211106,China)
 
    Abstract: The application of flexible DC technology is able to increase reliability and flexibility of distribution network. The paper, taking the AC/DC hybrid distribution network with two-port flexible DC interconnection in Suzhou Industrial Park as research object, makes analysis of its operational control strategy under normal and fault conditions. When the distribution network runs normally, the centralized-partition control mode is adopted. The operating characteristics of flexible DC technology and micro-grid control technology are used to support multiple scenarios, such as new energy accommodation and heavy load risk elimination. When faults occur in the distribution network, the main station system, flexible DC control system and protection device are controlled in a coordinated way to fast deal with faults based on the power supply capability analytical model of flexible DC with passive load.
    Key words: flexible DC; distribution network; coordinated control; fault disposal
 
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