Passivity-based control strategy of MMCHVDC with wind farm based on ESO and TSMC
Passivity-based control strategy of MMCHVDC with wind farm based on ESO and TSMC
- Author(s): K. Zhongjian 1 ; Z. Bing 2 ; Z. Zhendong 1 ; Z. Zilin 1 ; W. Shanshan 2 ; Y. Hongguo 1
- DOI: 10.1049/icp.2020.0032
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- Author(s): K. Zhongjian 1 ; Z. Bing 2 ; Z. Zhendong 1 ; Z. Zilin 1 ; W. Shanshan 2 ; Y. Hongguo 1
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View affiliations
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Affiliations:
1:
China University of Petroleum (East China) ,
Department of Electrical Engineering, Qingdao, Shandong ,
China ;
2: China Electric Power Research Institute , Haidian District, Beijing , China
Source:
The 16th IET International Conference on AC and DC Power Transmission (ACDC 2020),
2021
p.
19 – 25
-
Affiliations:
1:
China University of Petroleum (East China) ,
Department of Electrical Engineering, Qingdao, Shandong ,
China ;
- Conference: The 16th IET International Conference on AC and DC Power Transmission (ACDC 2020)
- DOI: 10.1049/icp.2020.0032
- ISBN: 978-1-83953-330-3
- Location: Online Conference
- Conference date: 02-03 July 2020
- Format: PDF
With the depletion of fossil fuels such as Petroleum, new energy sources have received more attentions. The DFIG wind farm connected to the grid by MMC-HVDC (Modular Multilevel Converter, CMMC) system has become an important means to solve the problem of new energy consumption. The traditional double closed-loop control can not improve the low inertia problem of wind farm and flexible DC system. In order to solve this problem, Firstly, the virtual synchronous generator (VSG) controller of the wind farm side MMC inverter is designed. Secondly, in order to reduce the influence of parameters on VSG and improve its transient and steady state performance, an additional frequency control based on extended state observer (ESO) and terminal sliding mode control (TSMC) is introduced in the VSG frequency controller, and the stability of the controller is proved. Finally, a simulation model of the DFIG connected to the MMC-HVDC is built in Matlab/Simulink. Through simulation analysis, the effectiveness of the Passivity-based Controller to improve the frequency and voltage stability under transient conditions is verified.
Inspec keywords: variable structure systems; HVDC power convertors; frequency control; power convertors; voltage control; invertors; asynchronous generators; HVDC power transmission; closed loop systems; power grids; observers; wind power plants; power generation control; synchronous generators
Subjects: Wind power plants; Control of electric power systems; Multivariable control systems; Frequency control; Voltage control; d.c. transmission; Power convertors and power supplies to apparatus; Asynchronous machines; Synchronous machines