电器与能效管理技术 ›› 2022, Vol. 0 ›› Issue (4): 76-82.doi: 10.16628/j.cnki.2095-8188.2022.04.013

• 配网技术与系统 • 上一篇    下一篇

含分布式电源接入的直流配电网故障仿真

李家旭1, 夏华2, 包向宇3   

  1. 1.广州地铁设计研究院股份有限公司, 广东 广州 510010
    2.国电南瑞用电技术分公司, 江苏 南京 211100
    3.南京邮电大学, 江苏 南京 210023
  • 收稿日期:2022-01-18 出版日期:2022-04-30 发布日期:2022-06-06
  • 作者简介:李家旭(1989—),男,工程师,主要从事城市轨道交通供配电设计等|夏 华 (1989—),男,工程师,主要从事直流用电技术及装备研究|包向宇(1999—),男,硕士研究生,研究方向为电动汽车与电网智能交互安全融合策略研究
  • 基金资助:
    国家重点研发计划项目(2017YFA0700304)

Fault Simulation of DC Distribution Network with Distributed Power Access

LI Jiaxu1, XIA Hua2, BAO Xiangyu3   

  1. 1. Guangzhou Metro Design and Research Institute Co.,Ltd.,Guangzhou 510010,China
    2. Guodian NARI Power Technology Branch,Nanjing 211100,China
    3. Nanjing University of Posts and Telecommunications,Nanjing 210023,China
  • Received:2022-01-18 Online:2022-04-30 Published:2022-06-06

摘要:

介绍了多端柔性直流配电网中的电源接入需求和模块化多电平换流器的拓扑结构,明确了多端柔性直流配电网中需要进行保护的范围。针对各保护区内典型故障进行理论分析,并根据各故障后的等效电路图,对各故障后的电流、电压特性进行了数值计算。依据实际工程构造三端柔性直流配电网仿真模型,对各保护区内故障进行仿真验证。

关键词: 柔性直流配电网, 模块化多电平换流器, 接地故障, 短路故障

Abstract:

The power access requirements and the topology of modular multi-level converters in the multi-terminal flexible DC distribution network,are introduced.The scope of protection required in the multi-terminal flexible DC distribution network is clarified.The typical faults in each protection area are analyzed theoretically.According to the equivalent circuit diagram after each failure,the current and voltage characteristics are numerically calculated.Based on the actual engineering construction of a three-terminal flexible DC distribution network simulation model,the faults in eacharea are simulated and verified.

Key words: flexible DC distribution network, modular multi-level converter, ground fault, short circuit fault

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