Research on frequency control method for micro-grid with a hybrid approach of FFR-OPPT and pitch angle of wind turbine

2021 ◽  
Vol 127 ◽  
pp. 106670
Author(s):  
Xilin Zhao ◽  
Zhenyu Lin ◽  
Bo Fu ◽  
Sili Gong
Keyword(s):  
Wind Turbine ◽  
Pitch Angle ◽  
Control Method ◽  
Frequency Control ◽  
Hybrid Approach ◽  
Micro Grid

scholarly journals Optimal Power Reserve of a Wind Turbine System Participating in Primary Frequency Control

2018 ◽  
Vol 8 (11) ◽  
pp. 2022 ◽  
Author(s):  
Abdullah Bubshait ◽  
Marcelo G. Simões
Keyword(s):  
Wind Turbine ◽  
Pitch Angle ◽  
Control Method ◽  
Frequency Control ◽  
Synchronous Generator ◽  
Rotor Speed ◽  
Wind Turbine System ◽  
Primary Frequency ◽  
Primary Frequency Control ◽  
And Control

Participation of a wind turbine (WT) in primary frequency control (PFC) requires reserving some active power. The reserved power can be used to support the grid frequency. To maintain the required amount of reserve power, the WT is de-loaded to operate under its maximum power. The objective of this article is to design a control method for a WT system to maintain the reserved power of the WT, by controlling both pitch angle and rotor speed simultaneously in order to optimize the operation of the WT system. The pitch angle is obtained such that the stator current of the permanent magnet synchronous generator (PMSG) is reduced. Therefore, the resistive losses in the machine and the conduction losses of the converter are minimized. To avoid an excessive number of pitch motor operations, the wind forecast is implemented in order to predict consistent pitch angle valid for longer timeframe. Then, the selected pitch angle and the known curtailed power are used to find the optimal rotor speed by applying a nonlinear equation solver. To validate the proposed de-loading approach and control method, a detailed WT system is modeled in Matlab/Simulink (The Mathworks, Natick, MA, USA, 2017). Then, the proposed control scheme is validated using hardware-in-the-loop and real time simulation built in Opal-RT (10.4.14, Opal-RT Inc., Montreal, PQ, Canada).

scholarly journals Retaining of Frequency in Micro-grid with Wind Turbine and Diesel Generator

2018 ◽  
Vol 8 (6) ◽  
pp. 3646-3651
Author(s):  
P. D. Chung
Keyword(s):  
Power Control ◽  
Wind Turbine ◽  
Control Method ◽  
Frequency Control ◽  
Speed Control ◽  
Frequency Regulation ◽  
Rotor Speed ◽  
Diesel Generator ◽  
Control Scheme ◽  
Micro Grid

This paper aims to compare the performance of frequency regulation with two control modes of controller including power control scheme and rotor speed control scheme. The frequency control in this research is based on the frequency droop control method but fuzzy logic is used to define the frequency droop coefficient. To compare the performance of these control modes, a simulation of a micro-grid with the existence of a group of doubly fed induction generator wind turbine system and a diesel generator is fulfilled in Matlab/Simulink. Simulation results indicated that the frequency in the micro-grid with two control schemes always remains in the operation range. With the power control scheme, the frequency in the micro-grid is smoother than that with the rotor speed control. Additionally, DFIG wind turbine with the power control scheme has a better performance in terms of electrical energy when compared to the rotor speed control scheme, and hence the cost of fuel used by diesel is less costly.

scholarly journals Dynamic response improvement of hybrid system by implementing ANN-GA for fast variation of photovoltaic irradiation and FLC for wind turbine

2015 ◽  
Vol 64 (2) ◽  
pp. 291-314 ◽  
Author(s):  
Maziar Izadbakhsh ◽  
Alireza Rezvani ◽  
Majid Gandomkar
Keyword(s):  
Fuzzy Logic ◽  
Wind Speed ◽  
Dynamic Response ◽  
Wind Turbine ◽  
Hybrid System ◽  
Pitch Angle ◽  
Fuzzy Logic Controller ◽  
Control Method ◽  
Control Technique ◽  
Power Curves

Abstract In this paper, dynamic response improvement of the grid connected hybrid system comprising of the wind power generation system (WPGS) and the photovoltaic (PV) are investigated under some critical circumstances. In order to maximize the output of solar arrays, a maximum power point tracking (MPPT) technique is presented. In this paper, an intelligent control technique using the artificial neural network (ANN) and the genetic algorithm (GA) are proposed to control the MPPT for a PV system under varying irradiation and temperature conditions. The ANN-GA control method is compared with the perturb and observe (P&O), the incremental conductance (IC) and the fuzzy logic methods. In other words, the data is optimized by GA and then, these optimum values are used in ANN. The results are indicated the ANN-GA is better and more reliable method in comparison with the conventional algorithms. The allocation of a pitch angle strategy based on the fuzzy logic controller (FLC) and comparison with conventional PI controller in high rated wind speed areas are carried out. Moreover, the pitch angle based on FLC with the wind speed and active power as the inputs can have faster response that lead to smoother power curves, improving the dynamic performance of the wind turbine and prevent the mechanical fatigues of the generator

A Frequency Control Method by Wind Farm & Battery using Load Estimation in Isolated Power System

2010 ◽  
Vol 11 (2) ◽  
Author(s):  
Akie Uehara ◽  
Tomonobu Senjyu ◽  
Atsushi Yona ◽  
Toshihisa Funabashi
Keyword(s):  
Power Systems ◽  
Pitch Angle ◽  
Wind Farm ◽  
Control Method ◽  
Frequency Control ◽  
Wind Farms ◽  
Load Estimation ◽  
Small Power ◽  
Battery Energy Storage Systems ◽  
Battery Energy

Currently, there are several published reports on wind farms (WFs) for controlling output power by using pitch angle control. In addition, to reduce the adverse effects of frequency deviations, battery energy storage systems (BESSs) are introduced to small power systems. In this context, this paper presents a frequency control method by the WF and the BESS using load estimation. The load is estimated by a disturbance observer. The frequency deviations in low and high frequency domain are reduced by the WF using pitch angle control and battery charge/discharge, respectively. By using the proposed method, the reduction of the rated capacity of the BESS is possible. Furthermore, for the pitch angle control system of each WTG in the WF, generalized predictive control (GPC) is applied to achieve robust control performance. The effectiveness of the proposed method is verified by numerical simulation.

Comparison of the Frequency Control Strategy of Wind Turbines and its Optimization Scheme

2012 ◽  
Vol 608-609 ◽  
pp. 494-499 ◽  
Author(s):  
Xin Shou Tian ◽  
Yue Hui Huang ◽  
Xiao Yan Xu ◽  
Wei Sheng Wang
Keyword(s):  
Wind Turbine ◽  
Wind Turbines ◽  
Control Strategy ◽  
Control Method ◽  
Frequency Control ◽  
Energy Utilization ◽  
Utilization Efficiency ◽  
Optimization Scheme ◽  
Typical Frequency ◽  
General Method

In order to improve the frequency stability of grid, new control strategy for wind turbines need to be developed with high wind power penetration. This work analyzes the requirements of frequency control for wind turbines in some countries, and the characteristics and methods of typical frequency control strategy are analyzed. To meet the requirements of frequency control of wind turbine and to improve wind energy utilization efficiency, a method of optimization scheme of frequency control on wind turbine is given in the paper, and the operating curve of wind turbine with the control method is determined, at the same time this work gives a general method about how to determine some key parameters.

A Frequency Control Method by Wind Turbine Generator/Battery using Load Estimation in Isolated Power System

2010 ◽  
Vol 130 (12) ◽  
pp. 1039-1048 ◽  
Author(s):  
Akie Uehara ◽  
Bungo Asato ◽  
Atsushi Yona ◽  
Naomitsu Urasaki ◽  
Tomonobu Senjyu ◽  
...  
Keyword(s):  
Power System ◽  
Wind Turbine ◽  
Control Method ◽  
Frequency Control ◽  
Load Estimation ◽  
Turbine Generator ◽  
Wind Turbine Generator

scholarly journals Primary frequency control applied to the wind turbine based on the DFIG controlled by the ADRC

2019 ◽  
Vol 10 (2) ◽  
pp. 1049
Author(s):  
Issam Minka ◽  
Ahmed Essadki ◽  
Sara Mensou ◽  
Tamou Nasser
Keyword(s):  
Wind Speed ◽  
Wind Turbine ◽  
Control Strategy ◽  
Pitch Angle ◽  
Frequency Control ◽  
Active Power ◽  
Frequency Regulation ◽  
Variable Speed ◽  
Primary Frequency ◽  
Primary Frequency Control

<span lang="EN-US">In this paper, we study the primary frequency control that allows the variable speed Aeolian to participate in the frequency regulation when a failure affects the network frequency. This method based on the control of the generator rotational speed or the control of pitch angle makes it possible to force the wind turbine to produce less power than its maximum available power, consequently we will create an active power reserve. This wind turbine must inject into the grid a part of its power reserve when the frequency drops, in contrary the wind turbine reserves more of energy. So, this work presents the performances of this control strategy for the different wind speed value. The results are obtained by a simulation in the MATLAB/SIMULINK environment.</span>

scholarly journals A New Pitch Angle Control Method of Wind Turbine Generators Based on Feedforward Wind Speed Information

2019 ◽  
Vol 122 ◽  
pp. 04001
Author(s):  
Mouayad Sahib ◽  
Thaker Nayl
Keyword(s):  
Power Generation ◽  
Wind Speed ◽  
Wind Turbine ◽  
Pitch Angle ◽  
Control Method ◽  
Turbine Generator ◽  
Wind Turbine Generator ◽  
Intelligent Control System ◽  
Turbine Generators ◽  
New Strategy

In this work, a new strategy to control the pitch angle of wind turbine generator is proposed. The strategy is based on designing an intelligent control system capable of maintaining a stable minimum fluctuating power generation. This can be achieved by providing the wind speed information to the controller in advance and hence allowing the controller to take the optimum action in controlling the blade pitch angle. A model based optimizer uses Model Predictive Control (MPC) technique to predict the wind turbine generator future behaviour and select the optimal control actions assisted by the wind speed information while satisfying the power generation constraints. The simulation results show that a significant improvement can be made using the proposed control method.

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