Second-order linear active disturbance rejection control strategy of MMC-HVDC

被引：0
|
作者：
Zhang F. [1 ]
Zhang G. [1 ]
Li C. [2 ]
机构：
[1] Key Laboratory of Smart Grid of Ministry of Education, Tianjin University, Tianjin
[2] State Grid Electric Power Research Institute of Fujian Provincial Power Co., Ltd., Fuzhou
来源：
Dianli Zidonghua Shebei/Electric Power Automation Equipment | 2017年 / 37卷 / 11期
关键词：
Capacitor voltage balancing control algorithm; HVDC power transmission; Linear active disturbance rejection controller; MMC-HVDC;
D O I：
10.16081/j.issn.1006-6047.2017.11.015
中图分类号：
学科分类号：
摘要：
The technology of MMC-HVDC(Modular Multilevel Converter based High Voltage Direct Current) has been widely applied. However, the current inner-loop, which is based on traditional dq synchronous rotating coordinate system in the dual closed-loop PI control system, relys on the systematic mathematical model for the feed-forward decoupling compensation. Moreover, the first-order nonlinear active disturbance rejection controller has a considerable number of design parameters to tune. In these regards, the second-order linear active disturbance rejection control strategy of MMC-HVDC is proposed. The dual closed-loop second-order linear active disturbance rejection controller of MMC-HVDC is designed to achieve the complete decoupling control of active and reactive power. Besides, the designed controller has fast response speed, strong anti-disturbance ability, and independence of controlled object mathematical model. Then, an improved capacitor voltage balancing control algorithm is proposed to reduce the switching frequency of bridge submodule. The electromagnetic transient model of 21-level MMC-HVDC is built in PSCAD/EMTDC, and simulative results verify that the proposed controller has good control performance and the capacitor voltage balancing control algorithm is effective. © 2017, Electric Power Automation Equipment Press. All right reserved.
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页码：92 / 98
页数：6
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