Maintenance

The technicians of wind maintenance of SL ENERGIES intervene for works of inspection, expertise, control and inspection of the end of guarantee of wind farms.

• General Inspectorate of wind turbines: the technicians of wind maintenance insures a global inspection of the wind environment. They ensure a complete visual control of the wind turbine.
• Mechanical inspection of wind turbines: SL ENERGIES insures the follow-up and the application of the schedules of change of oil. The technicians of maintenance also realize the inspection of the multiplier, in particular by endoscopy, and to follow the life cycle of the multiplier.
• Electric inspection of wind turbines: SL ENERGIES controls the electric quality of the network, the internal fluctuations in the wind farm and the electric quality of the wind turbine ( WTG). SL ENERGIES realizes the controls of tension, current, harmonious and the reactive power.

SL ENERGIES gives to his customers all its know-how regarding analysis of the failures and their effects; esteem the occurrences and the consequences of the incidents and proposes solutions to mitigate the breakdowns of wind turbines.

The conditional and preventive maintenance of wind turbines carries essentially on:

•  The analysis of oil: wind turbines are rotating machines which possess important needs in lubrication. The analysis of oil allows to detect anomalies such as the wear by abrasion, the contamination by internal particles in the wind turbine or the pollution by elements outer the wind turbine. The analysis of oil allows to esteem the quality of oil and to realize an operation of preventive maintenance before an incident intervenes and stops the wind power production
• The vibratory analysis of the rotating machines: wind turbines have to be the object of complex vibratory analyses because the abnormal vibrations can engender grave breakdowns or breaks of materials. So, the mechanical constraints which undergo the rotary rooms of wind turbines are studied with accuracy to prevent any risk and any stop of the wind electricity production. The main defects highlighted by the vibratory analysis of wind turbines are: the imbalance of the lines of trees, the degradation of the matings(couplings), the sets and the wear of the rotations.
• The electric analysis: the High-voltage maintenance ( HT): the technicians of maintenance SL ENERGIES insure the maintenance of transformers, power cables, circuit breakers and sectionneurs.
• The thermal imaging of wind turbines: the thermal imaging of wind turbines: by using the technique of the thermal imaging, the technicians of maintenance of SL ENERGIES can identify sources of infrared energy emitted for the wind turbine. This technique allows to realize inspections continuously of the wind electricity production, at a distance and in complete safety.The thermal imaging allows to detect an abnormal overheating of the mechanical elements (rotor, multiplier, slow tree) and electric elements (engines, electric cables) and to mitigate the incident in a preventive way.

The technicians of wind maintenance of SL ENERGIES repair and put back in functioning machines during the breakdowns and insure reconnected them to networks. The curative maintenance concerns the repair of blades, alternator, multiplier of the network low and high-voltage of the wind turbine.

Inspection of the blades of wind turbines: the inspection of the blades of rotor of wind turbine allows to intervene quickly to repair minor damage which can reduce the wind yields. The inspection and the control of the blades of rotor of wind turbine is made from a motorized suspended platform which allows the access to 360 ° around the blade. A particular attention is carried  at the edge of attack of the blade and on its surface .

Les technicians of wind maintenance SL ENERGIES also inspect the imbalance which can use prematurely the boxes of gearings, the landings and the blades of rotors. The imbalance of the blades of rotor are often bound to the erosion or to the accumulation of outside .Les particles works of inspection and control of wind turbines can be scheduled or be realized in the request further to climate-related events such as the thunderstorm.