集群新能源经柔直孤岛送出换流站的功率越限控制研究
作者:
作者单位:

作者简介:

通讯作者:

中图分类号:

TM721.1

基金项目:

国家电网有限公司科技项目(XTB17201600139)


Fast over-limit power control of converter station sending out new energy in island mode through VSC-HVDC
Author:
Affiliation:

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    张北地区大规模新能源发电经柔直换流站孤岛送出系统中,送端换流站容量小于纯新能源电源总容量。为确保换流站功率波动不会短时越限,文中设计了功率越限快速控制系统,包括功率越限回降控制系统和紧急虚拟频率控制系统,对换流站功率越限进行有效预控,确保换流站安全。首先,对张北地区新能源发电的运行数据进行分析,得出张北地区新能源有功短时波动特性,通过概率统计确定在某一时间尺度内发生的最大波动速率,为系统参数设计提供支撑。然后,详细介绍功率越限回降控制系统结构、对新能源功率预控控制过程、关键参数整定原则及回降功率的新能源执行站调用原则等。紧急虚拟频率控制系统作为功率越限回降控制系统在通信中断时的备用。最后,在PSCAD/EMTDC电磁暂态仿真平台搭建了换流站主站以及执行站控制器的仿真模型进行验证。

    Abstract:

    In the islandedcontrol system of the large scale new energy power generation throughvoltage source converter based high voltage direct current transmission (VSC-HVDC) station in Zhangbei area, the capacity of the converter station at the feed end is less than the total capacity of the pure new energy power source. In order to ensure that the power fluctuation of the converter station will not exceed the limit in a short time, a fast over-limit power control of converter station is designed in this paper, including fallback power control system when exceeding the limit and the emergency virtual frequency control system, so as to effectively pre-control when the power exceeding the converter station and ensure the safety of the converter station. Firstly, the operation data of new energy power generation in Zhangbei area is analyzed, and the short-time fluctuation characteristics of new energy active power in Zhangbei area are obtained. Through probability statistics, the maximum fluctuation rate occurring in a certain time scale is determined, which provides support for the system parameter design. Then, the structure of the power off-limit fallback control system, the process of the new energy power pre-control, the principle of setting key parameters and the principle of calling the new energy execution station for the power fallback are introduced in details. The emergency virtual frequency control system serves as a backup for fallback power control system in case of communication interruption. Finally, the simulation models of the converter station master station and the executive station controller are built on the PSCAD/EMTDC electromagnetic transient simulation platform for verification.

    参考文献
    相似文献
    引证文献
引用本文

王晖,彭依,杨立敏,张健,李文锋,郭贤珊.集群新能源经柔直孤岛送出换流站的功率越限控制研究[J].电力工程技术,2021,40(3):51-59

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:2020-10-29
  • 最后修改日期:2020-12-03
  • 录用日期:2020-08-17
  • 在线发布日期: 2021-06-11
  • 出版日期: 2021-05-28
文章二维码