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混合级联直流输电系统主动谐波补偿控制
作者:
作者单位:

1.强电磁工程与新技术国家重点实验室(华中科技大学电气与电子工程学院),湖北省武汉市 430074;2.特变电工新疆新能源股份有限公司,新疆维吾尔自治区乌鲁木齐市 830011

摘要:

为提升混合级联直流输电系统接入点的电能质量,减少工程占地与造价,提出了一种基于模块化多电平换流器的主动谐波补偿方法。首先,介绍了混合级联直流输电系统的拓扑结构和谐波特征,其中高压阀组采用电网换相换流器,低压阀组则采用模块化多电平换流器。然后,介绍了系统的谐波等值电路与主动谐波补偿控制策略,通过模块化多电平换流器对电网换相换流器的谐波进行补偿,并分析了主动谐波补偿对模块化多电平换流器稳态运行的影响。最后,在PSCAD/EMTDC仿真软件中搭建了混合级联直流输电系统的仿真模型,验证了主动谐波补偿控制策略在系统稳态运行、功率变化和计及延时工况下的有效性。

关键词:

基金项目:

新疆维吾尔自治区重点研发项目(2020B02002)。

通信作者:

作者简介:

邸世民(1997—),男,硕士研究生,主要研究方向:柔性直流输电系统。E-mail:shimin_di@foxmail.com
向往(1990—),男,通信作者,副研究员,主要研究方向:模块化多电平换流器和直流电网等。E-mail:xiangwang1003 @foxmail.com
林卫星(1986—),男,博士,国家人才引进专家,主要研究方向:模块化多电平换流器、直流电网、高压直流用直流-直流变换器、直流输电等。E-mail:weixinglin@foxmail.com


Active Harmonic Compensation Control for Hybrid Cascaded HVDC Transmission System
Author:
Affiliation:

1.State Key Laboratory of Advanced Electromagnetic Engineering and Technology (School of Electrical and Electronic Engineering, Huazhong University of Science and Technology), Wuhan 430074, China;2.TBEA China Xinjiang Sunoasis Co., Ltd., Urumqi 830011, China

Abstract:

To improve the power quality of the integration point of hybrid cascaded high voltage direct current (HVDC) transmission system and reduce the project occupied area and cost, this paper proposes an active harmonic compensation method based on modular multilevel converter (MMC). Firstly, the topology and harmonic characteristics of hybrid cascaded HVDC transmission system are introduced. The high-voltage valve adopts the line commutation converter (LCC), and the low-voltage valve adopts multiple MMCs. Then, the harmonic equivalent circuit of the system and the active harmonic compensation control strategy are described. In the strategy, the harmonics of LCC will be compensated by MMCs. Furthermore, the influence of active harmonic compensation on the steady-state operation of MMC are analyzed. Finally, a simulation model of hybrid cascaded HVDC transmission system is built in PSCAD/EMTDC simulation software, which verifies the availability of the active harmonic compensation control strategy in the steady-state operation, power change and time delay conditions of the system.

Keywords:

Foundation:
This work is supported by Key R&D Projects of Xinjiang Uygur Autonomous Region (No. 2020B02002).
引用本文
[1]邸世民,向往,林卫星,等.混合级联直流输电系统主动谐波补偿控制[J].电力系统自动化,2021,45(22):134-145. DOI:10.7500/AEPS20210403002.
DI Shimin, XIANG Wang, LIN Weixing, et al. Active Harmonic Compensation Control for Hybrid Cascaded HVDC Transmission System[J]. Automation of Electric Power Systems, 2021, 45(22):134-145. DOI:10.7500/AEPS20210403002.
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  • 收稿日期:2021-04-03
  • 最后修改日期:2021-06-18
  • 录用日期:
  • 在线发布日期: 2021-11-16
  • 出版日期: