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Generator Winding Temperature Monitoring

generator temperature monitoringOn-line fiber optic temperature monitoring is now commonplace for medium and high-voltage generator equipment. OSENSA’s fiber optic sensors offer a cost-effective solution for real-time temperature monitoring enabling equipment to operate at peak performance with extended service life.

Fiber optic temperature sensors are now routinely installed into large motor and power generator equipment to provide real-time monitoring and thermal protection of critical stator windings and bearing hot spots. The safe operating temperature of rotating machine windings is limited by the heat which the insulating material can stand before eventual deterioration. This temperature and deterioration rate varies with different classes of insulating materials. Insulation deterioration at a given temperature is approximately proportional to the length of time that the temperature is above the critical threshold. Until recently, RTD’s (resistance temperature detectors) were typically embedded into windings to provide continuous monitoring, despite the inaccuracies caused by EMI/RFI interference. Now, OSENSA’s innovative technology has enabled the deployment of low-cost fiber optic temperature sensors.

OSENSA’s cost-effective fiber optic temperature sensors can be installed where high-voltage and alternating electromagnetic fields pose problems for traditional RTD winding sensors. OSENSA’s fiber sensors can be inserted between the windings of motors and generators and allow for continuous temperature measurement to protect insulation and extend maintenance schedules. With OSENSA’s optical temperature sensors installed, operators can monitor load conditions in real-time, maximizing energy and economic efficiencies. Better energy efficiency is good for business and good for the environment.