Virtual Inertia Control and Short-Term Primary Control for PMSG-Based Wind Turbine Using Supercapcitor

2020 ◽  
Author(s):  
Xueyang Zeng ◽  
Xiaopeng Li ◽  
Shunliang Wang ◽  
Tianqi Liu ◽  
Chun Zhang ◽  
...  
Keyword(s):  
Wind Turbine ◽  
Primary Control ◽  
Short Term ◽  
Virtual Inertia ◽  
Inertia Control

scholarly journals The Research on Second-Order ADRC Algorithm of Using Wind Turbine Virtual Inertia to Participate in Primary Frequency Regulation in a Small Stand-Alone Microgrid

2018 ◽  
Vol 2018 ◽  
pp. 1-13
Author(s):  
Wang Yi ◽  
Jiang Hanhong ◽  
Xing Pengxiang
Keyword(s):  
Wind Turbine ◽  
Transient Stability ◽  
Synchronous Generator ◽  
Second Order ◽  
Frequency Regulation ◽  
Regulation Mechanism ◽  
Direct Drive ◽  
Virtual Inertia ◽  
Inertia Control ◽  
Primary Frequency

In order to improve the transient stability of frequency in a small stand-alone microgrid (SSM), this paper takes a SSM composed of a direct-drive permanent magnet synchronous generator (D-PMSG) and a micro gas turbine (MGT) as the background and uses wind turbine generator (WTG) virtual inertia (VI) to participate in the primary (short-term) system frequency regulation. First of all, this paper constructs a grid-connected model composed of a WTG and a MGT, analyzes the WTG virtual inertia frequency regulation mechanism, and explains the principle of proportional-differentiation (PD) virtual inertia control (VIC) and its shortcomings. Secondly, the paper introduces the structure principle of n-order active disturbance rejection control (ADRC) and deduces the design process of second-order ADRC-VIC. Finally, through the simulation and experimental verification, comparing the frequency perturbation of without-VIC, PD-VIC, and ADRC-VIC, it is concluded that PD-VIC and ADRC-VIC both can use the WTG virtual inertia to participate in the primary frequency regulation. The frequency regulation effect of ADRC-VIC is better than PD-VIC, ADRC-VIC can extend the rotor speed recovery time and avoid overshoot, and its frequency fluctuation amplitude and settling time are obviously improved, and ADRC-VIC can effectively avoid the overshoot phenomenon of the MGT output power.

Evaluating a Virtual Inertia Control Scheme for a DFIG Wind Turbine

2021 ◽  
Author(s):  
A. Issac Rosales-Romero ◽  
F. Sergio Sellschopp-Sanchez ◽  
Ricardo Vargas-Salas ◽  
Marco A. Arjona-Lopez ◽  
Rodrigo Loera-Palomo
Keyword(s):  
Wind Turbine ◽  
Control Scheme ◽  
Virtual Inertia ◽  
Inertia Control

scholarly journals Dynamic Frequency Support from a DFIG-Based Wind Turbine Generator via Virtual Inertia Control

2020 ◽  
Vol 10 (10) ◽  
pp. 3376 ◽  
Author(s):  
Dejian Yang ◽  
Enshu Jin ◽  
Jiahan You ◽  
Liang Hua
Keyword(s):  
Wind Speed ◽  
Power Systems ◽  
Wind Turbine ◽  
Control Strategy ◽  
Control Method ◽  
Frequency Stability ◽  
Virtual Inertia ◽  
Inertia Control ◽  
System Frequency ◽  
Inertia Response

As the penetrated level of wind in power grids increases, the online system inertia becomes weak. Doubly-fed induction generator (DFIG)-based wind turbine generators (WTGs) are required to provide virtual inertia response to support system frequency. The present inertia control strategy with fixed control gain is not suitable and may cause stall of the DFIG-based WTG, as the virtual inertia response potential from the DFIG-based WTG is different with various wind speed conditions. This paper addresses a virtual inertia control method for the DFIG-based WTGs to improve the system frequency stability without causing stalling of the wind turbine for various wind speed conditions. The effectiveness of the proposed virtual inertia control method is investigated in a small system embedded with the DFIG-based WTG. Results demonstrate that the proposed virtual inertia strategy improves the frequency stability without causing the rotor speed security issue. Thus, the proposed control strategy can secure the dynamic system frequency security of power systems under the scenarios of full and partial loads, and, consequently, the proposed method provides a promising solution of ancillary services to power systems.

scholarly journals Data-Driven Virtual Inertia Control Method of Doubly Fed Wind Turbine

Energies ◽  
2021 ◽  
Vol 14 (17) ◽  
pp. 5572
Author(s):  
Tai Li ◽  
Leqiu Wang ◽  
Yanbo Wang ◽  
Guohai Liu ◽  
Zhiyu Zhu ◽  
...  
Keyword(s):  
Wind Turbine ◽  
Riccati Equation ◽  
Control Method ◽  
Frequency Measurement ◽  
Data Driven ◽  
Optimal Controller ◽  
Differential Riccati Equation ◽  
Virtual Inertia ◽  
Inertia Control ◽  
Doubly Fed

This paper presents a data-driven virtual inertia control method for doubly fed induction generator (DFIG)-based wind turbine to provide inertia support in the presence of frequency events. The Markov parameters of the system are first obtained by monitoring the grid frequency and system operation state. Then, a data-driven state observer is developed to evaluate the state vector of the optimal controller. Furthermore, the optimal controller of the inertia emulation system is developed through the closed solution of the differential Riccati equation. Moreover, a differential Riccati equation with self-correction capability is developed to enhance the anti-noise ability to reject noise interference in frequency measurement process. Finally, the simulation verification was performed in Matlab/Simulink to validate the effectiveness of the proposed control strategy. Simulation results showed that the proposed virtual inertia controller can adaptively tune control parameters online to provide transient inertia supports for the power grid by releasing the kinetic energy, so as to improve the robustness and anti-interference ability of the control system of the wind power system.

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