Influences of the Temperature Variations in the Gondola of the Goldwing S50/750 Wind

Abstract

The use of wind energy is a decisive factor for human development, associated with the environment and capacity of people exploiting this vital resource. The investigation is part of predicting the behavior of the temperatures inside the nacelle of the Goldwind wind turbines S50 / 750 models installed in the Gibara Wind Farm. It supports its theories and analysis of computer-aided design (CAD), by monitoring the working temperatures, which interact with the forced ventilation system in the studied devices. The values analyzed result from continuous measurements carried out by the SCADA systems (Supervisory Control and Data Acquisition) of the studied machines. Which allows the diagnosis and early visualization of unforeseen incipient failures that currently occur under operating conditions standardized by the manufacturer. When the wind reaches speeds that exceed 11.5 m/s, major aggregates such as the gearbox and the generator fail. The results obtained in the investigation will allow to correct the program in the PLC (Logical Control Program) for the start-up and stop of the cooling system of the wind turbines in order to generate an ideal thermal balance for the working condition activities in Cuba, inside the nacelle, reducing the frequent occurrence of critical temperature values in the maximum limit that put the wind turbines out of service and therefore providing the wind farm with a higher coefficient of technical availability.

Evaluation of Working Temperature in Wind Turbine Bearings by Simulation of Lubricant Level

“…Arbella et al [17] with the use of CAD-CAE tools and the fundamentals of thermodynamics developed the models to evaluate the thermal behavior in the nacelle of the Goldwind S50/750 Wind Turbines installed in the Gibara II Wind Farm (Figure 1). These models can be applied in other environmental and working conditions [18]. It is sufficient to adjust input parameters such as temperature, solar radiation, relative humidity, wind speed and direction, which correspond to climatic conditions of the study and simulations evaluated.…”

“…Therefore, Flow Simulation is selected as a tool to simulate the heating process in the bearings. The technical descriptions and operating manuals associated with the Goldwind Wind Turbine model S50/750 [18][19][20][21] were consulted. In the investigation, the lubricant Mobil SHC 100 (synthetic grease), manufactured by one of the world leaders in the production of lubricant [22], whose general characteristics are: lithium complex grade NLGI 2, ISOVG 100, synthetic grease recommended for industrial use, with a temperature range from (4.4 to 176.6) ℃.…”

Condition Monitoring of Wind Turbines: A Case Study of the Gibara II Wind Farm

“…The fifth order polynomial equation determined allows predictions with an R 2 = 0.99, guaranteeing a high level of accuracy. Previous research [37,40,41], established the relationship between T1 temperature and potential failures and failure points in the WT of the Gibara II WF, but the existing relationships with the rest of the parameters monitored by the SCADA system were not exposed.…”