Remote Monitoring and Diagnostics of Pitch Bearing Defects in a MW-Scale Wind Turbine Using Pitch Symmetrical-component Analysis

He, Lijun; Hao, Liwei; Wang, Qiao

doi:10.1109/ecce.2019.8912664

Cited by 6 publications

(3 citation statements)

References 9 publications

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Section: Synchronous Generator With a Fully Rated Convertermentioning

confidence: 99%

“…Technically, the variable speed operation by a wind power plant incorporating a synchronous generator may be achieved by means of a frequency converter with a DC link. The variable frequency alternating current produced by the generator is rectified before being fed via an inverter to the power grid as shown in Figure 6 [20]. The rectifier is controlled via different means and the inverter is controlled by using a voltage control loop and a current control loop and sinusoidal pulse width modulation (SPWM) is used to control the switch operation.…”

Section: Synchronous Generator With a Fully Rated Convertermentioning

confidence: 99%

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Fault Ride through Capability Analysis (FRT) in Wind Power Plants with Doubly Fed Induction Generators for Smart Grid Technologies

et al. 2020

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Faults in electrical networks are among the key factors and sources of network disturbances. Control and automation strategies are among the key fault clearing techniques responsible for the safe operation of the system. Several researchers have revealed various constraints of control and automation strategies such as a slow dynamic response, the inability to switch the network on and off remotely, a high fault clearing time and loss minimization. For a system with wind energy technologies, if the power flow of a wind turbine is perturbed by a fault, the intermediate circuit voltage between the machine side converter and line side converter will rise to unacceptably high values due to the accumulation of energy in the DC link capacitor. To overcome the aforementioned issues, this paper used MATLAB simulations and experiments to analyze and validate the results. The results revealed that fault ride through capability with Supervisory Control and Data Acquisition (SCADA) viewer software, Active Servo software and wind sim packages are more adaptable to the variations of voltage sag, voltage swell and wind speed and avoid loss of synchronism and improve power quality. Furthermore, for protection purposes, a DC chopper and a crowbar should be incorporated into the management of excess energy during faults and a ferrite device included for the reduction of the electromagnetic field.

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Section: Synchronous Generator With a Fully Rated Convertermentioning

confidence: 99%

Section: Synchronous Generator With a Fully Rated Convertermentioning

confidence: 99%

Fault Ride through Capability Analysis (FRT) in Wind Power Plants with Doubly Fed Induction Generators for Smart Grid Technologies

et al. 2020

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“…The changeable external wind conditions and the complex internal system structure of the pitch control system are prone to lead to abnormal output power, blade damage, and even unit collapse, resulting in a high occurrence rate of pitch motor failure and pitch bearing failure. Failure of pitch bearing would cause the machine to stop [5]. Pitch misalignment could cause performance worsening, undesired rotor loads, and severe damage of the turbine [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Fault Detection for Pitch System of Wind Turbine-Driven Doubly Fed Based on IHHO-LightGBM

Tang

Peng

2021

Applied Sciences

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To address the issue of a large calculation and difficult optimization for the traditional fault detection of a wind turbine-based pitch control system, a fault detection model, based on LightGBM by the improved Harris Hawks optimization algorithm (light gradient boosting machine by the improved Harris Hawks optimization,IHHO-LightGBM) for the wind turbine-based pitch control system, is proposed in this article. Firstly, a trigonometric function model is introduced by IHHO to update the prey escape energy, to balance the global exploration ability and local development ability of the algorithm. In this model, the fault detection false alarm rate is used as the fitness function, and the two parameters are used as the optimization objects of the improved Harris Hawks optimization algorithm, to optimize the parameters, so as to achieve the global optimal parameters to improve the performance of the fault detection model. Three different fault data of the pitch control system in actual operations of domestic wind farms are used as the experimental data, the Pearson correlation analysis method is introduced, and the wind turbine power output is taken as the main state parameter, to analyze the correlation degree of all the characteristic variables of the data and screen the important characteristic variables out, so as to achieve the effective dimensionality reduction process of the data, by using the feature selection method. Three established fault detection models are selected and compared with the proposed method, to verify its feasibility. The experimental data indicate that compared with other algorithms, the fault detecting ability of the proposed model is improved in all aspects, and the false alarm rate and false negative rate are lower.

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Electrical design and structure optimization of 10 MW fully superconducting wind turbine generators

Jia

et al. 2020

Physica C: Superconductivity and its Applications

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Remote Monitoring and Diagnostics of Pitch Bearing Defects in a MW-Scale Wind Turbine Using Pitch Symmetrical-component Analysis

Cited by 6 publications

References 9 publications

Fault Ride through Capability Analysis (FRT) in Wind Power Plants with Doubly Fed Induction Generators for Smart Grid Technologies

Fault Ride through Capability Analysis (FRT) in Wind Power Plants with Doubly Fed Induction Generators for Smart Grid Technologies

Fault Detection for Pitch System of Wind Turbine-Driven Doubly Fed Based on IHHO-LightGBM

Electrical design and structure optimization of 10 MW fully superconducting wind turbine generators

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