Research on D-STATCOM Double Closed-Loop Control Method Based on Improved First-Order Linear Active Disturbance Rejection Technology
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Tianjin Key Laboratory of Control Theory and Application for Complex Systems, Tianjin University of Technology, Tianjin 300384, China
2
School of Electrical and Electronic Engineering, Tianjin University of Technology, No.391 Binshui West Road, Xiqing District, Tianjin 300384, China
*
Author to whom correspondence should be addressed.
Energies 2020, 13(15), 3958; https://doi.org/10.3390/en13153958
Received: 4 July 2020
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Revised: 18 July 2020
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Accepted: 29 July 2020
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Published: 1 August 2020
(This article belongs to the Section A: Electrical Engineering)
The application of a distribution static synchronous compensator (D-STATCOM) is the best technical means to solve the problem of reactive power compensation and harmonics. The D-STATCOM system has the characteristics of variable parameters, strong coupling, nonlinearity and multi-variability. In order to improve the speed of the dynamic tracking response and anti-disturbance capability of the D-STATCOM, the article proposes an improved Linear Active Disturbance Rejection Controller (LADRC) based on the total disturbance deviation control method. Combined with double closed-loop control, the inner loop takes the current as the state variable, and the outer loop uses the DC side output voltage as the state variable to achieve robust stability of the D-STATCOM and controller output. The simulation results show that the improved LADRC is more stable than the traditional LADRC in controlling the DC voltage waveform of the compensator, reactive current tracking and reactive power compensation waveform when it is disturbed, which verifies the superiority and feasibility of the improved LADRC.
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Keywords:
D-STATCOM; principle of deviation control; linear active disturbance rejection control; double closed loop; anti-interference characteristics
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MDPI and ACS Style
Ma, Y.; Sun, X.; Zhou, X. Research on D-STATCOM Double Closed-Loop Control Method Based on Improved First-Order Linear Active Disturbance Rejection Technology. Energies 2020, 13, 3958. https://doi.org/10.3390/en13153958
AMA Style
Ma Y, Sun X, Zhou X. Research on D-STATCOM Double Closed-Loop Control Method Based on Improved First-Order Linear Active Disturbance Rejection Technology. Energies. 2020; 13(15):3958. https://doi.org/10.3390/en13153958
Chicago/Turabian StyleMa, Youjie, Xiaotong Sun, and Xuesong Zhou. 2020. "Research on D-STATCOM Double Closed-Loop Control Method Based on Improved First-Order Linear Active Disturbance Rejection Technology" Energies 13, no. 15: 3958. https://doi.org/10.3390/en13153958
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