Research on D-STATCOM Double Closed-Loop Control Method Based on Improved First-Order Linear Active Disturbance Rejection Technology

Youjie Ma, Xiaotong Sun and Xuesong Zhou
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Youjie Ma: Tianjin Key Laboratory of Control Theory and Application for Complex Systems, Tianjin University of Technology, Tianjin 300384, China
Xiaotong Sun: School of Electrical and Electronic Engineering, Tianjin University of Technology, No.391 Binshui West Road, Xiqing District, Tianjin 300384, China
Xuesong Zhou: School of Electrical and Electronic Engineering, Tianjin University of Technology, No.391 Binshui West Road, Xiqing District, Tianjin 300384, China

Energies, 2020, vol. 13, issue 15, 1-19

Abstract: 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.

Keywords: D-STATCOM; principle of deviation control; linear active disturbance rejection control; double closed loop; anti-interference characteristics (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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