电气工程学报 ›› 2022, Vol. 17 ›› Issue (3): 219-226.doi: 10.11985/2022.03.026

• 新能源发电与电能存储 • 上一篇    

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含大规模新能源接入的交直流输电系统数字孪生平台架构设计*

周敬森1(), 魏金萧2(), 谢刚文1, 冉立2, 张友强1, 胡嘉渝2   

  1. 1.国网重庆市电力公司电力科学研究院 重庆 401120
    2.重庆大学输配电装备及系统安全与新技术国家重点实验室 重庆 400044
  • 收稿日期:2021-02-01 修回日期:2022-04-13 出版日期:2022-09-25 发布日期:2022-10-28
  • 通讯作者: 魏金萧 E-mail:zhoujingsen@whu.edu.cn;weijinxiao@cqu.edu.com
  • 作者简介:周敬森,男,1989年生,博士,工程师。主要研究方向为电力系统分析、柔性直流输电、数字孪生。E-mail: zhoujingsen@whu.edu.cn
  • 基金资助:
    *重庆市自然科学基金博士后科学基金(cstc2019jcyj-bshX0082);国家自然科学基金(5171101176);国家重点研发计划(2018YFB0905800)

Architecture Design of Digital Twin Platform for AC & DC Transmission System with Large Scale New Energy

ZHOU Jingsen1(), WEI Jinxiao2(), XIE Gangwen1, RAN Li2, ZHANG Youqiang1, HU Jiayu2   

  1. 1. State Grid Chongqing Electric Power Company Research Institute, Chongqing 401120
    2. State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044
  • Received:2021-02-01 Revised:2022-04-13 Online:2022-09-25 Published:2022-10-28
  • Contact: WEI Jinxiao E-mail:zhoujingsen@whu.edu.cn;weijinxiao@cqu.edu.com

摘要:

随着电力电子器件的发展及技术的进步,越来越多的大功率电力电子设备被应用于电力系统柔性直流输电中,以提升电网稳定性和新能源接纳能力,渝鄂柔性直流背靠背联网工程是这一技术的典型应用。但是,由于直流环节和新能源发电过程含有大量的电力电子开关器件和功率模块,为含大规模新能源接入的交直流混合仿真系统分析带来了较大困难。基于数字孪生的概念,将MMC子模块等效为电源与其导通电阻的串联。针对渝东北地区交直流混合电网的具体参数和网络结构,考虑近期该区域新能源规划,在分析、预测负荷、新能源出力的基础上,初步建立了一整套含大规模新能源接入的交直流输电系统数字孪生平台,并将平台运行结果与实际运行状态相比较,证明了所提分析架构的实用性和有效性。

关键词: 交直流输电, 数字孪生, MMC-HVDC, 风电场, 架构设计

Abstract:

With the development of power electronic devices and the progress of technology, more and more high-power power electronic devices are used in power system flexible DC transmission, in order to improve the stability of power grid and the ability to accept new energy. Chongqing Hubei flexible DC back-to-back interconnection project is a typical application of this technology. However, due to the DC link and the new energy generation process contain a large number of power electronic switching devices and power modules, it brings great difficulties to the analysis of AC-DC hybrid simulation system with large-scale new energy access. Based on the concept of digital twin, MMC sub module switch device is equivalent to its turn on and turn off resistance. According to the specific parameters and network structure of AC & DC hybrid power grid in Northeast Chongqing, considering the recent wind power planning in the region, based on the analysis and prediction of load and wind power output, a set of digital twin platform of AC & DC transmission system with large-scale wind power access is established and the platform running results are compared with the actual results, which proves the effectiveness of the analysis architecture proposed in this paper.

Key words: AC & DC system, digital twin, MMC-HVDC, wind farm, architecture design

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