Uninterrupted Power Hub Based on VSC-HVDC

YUAN Zhichang; WEI Yingdong; LIU Wenhua; MA Huiyuan; YU Xijuan; GUO Peiqian

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Uninterrupted Power Hub Based on VSC-HVDC

更新时间：2025-12-08

- Uninterrupted Power Hub Based on VSC-HVDC
- Vol. 46, Issue 8, Pages: 2914-2921(2020)
- 作者机构：
  
  1. 清华大学电机工程与应用电子技术系
  2. 国网北京市电力公司
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published Online：31 August 2020，
  
  Published：2020
- 稿件说明：
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YUAN Zhichang, WEI Yingdong, LIU Wenhua, et al. Uninterrupted Power Hub Based on VSC-HVDC[J]. 2020, 46(8): 2914-2921.
DOI：

YUAN Zhichang, WEI Yingdong, LIU Wenhua, et al. Uninterrupted Power Hub Based on VSC-HVDC[J]. 2020, 46(8): 2914-2921. DOI：

摘要

为解决交流配电系统存在设备负载率低、冗余度大、故障后恢复供电时间长等问题

提出了一种基于柔性直流的不间断电力交换器（uninterrupted power hub

UPH）

并利用电压源换流器将多个配电变电站互联

以实现变电站间负载率均衡、负荷转供等功能。论文分析了UPH的主要运行方式和控制策略

并通过数字仿真分析了UPH的控制性能。研究结果表明

通过设置固定与变电站连接及灵活在各个变电站切换这2种换流器

并合理配置其容量

UPH可比传统互联方案节省较大的换流器总体容量

是柔性直流技术提升配电网设备利用率和可靠性的一种新方案。论文研究可为柔性直流技术在配电系统中的应用提供参考。

Abstract

In order to solve the problems in power distribution system such as low load ratio with high redundancy in power apparatus and long recovery time after fault

we propose an uninterrupted power hub（UPH） based on VSC-HVDC

in which several substations are connected through voltage source converters to fulfill load balancing and emergently load shift. Main operation scenarios and control strategies of UPH are analyzed in digital simulation system which validates the advantages of UPH application in distribution grid. Study shows that

by cooperation of fixed VSC and variable VSC in UPH

the total VSC capacity can be decreased comparing to the traditional multi-terminal VSC-HVDC system. UPH provides a new application scheme of VSC-HVDC in distribution grid to improve reliability and reduce redundancy. The research of this paper can provide a reference for the application of flexible DC technology in power distribution system.

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Related Institution

直流输电技术全国重点实验室(南方电网科学研究院有限责任公司)

Electric Power Research Institute of State Grid Fujian Electric Power Company

State Grid Economic and Technological Research Institute Co.,Ltd.

Electric Power Research Institute, Guangdong Power Grid Corporation

Sichuan Energy Internet Research Institute, Tsinghua University

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