TRANSFORMER OIL AND ENGINE HALL COOLING
During the summer months when the ambient air temperature goes above 35 °C with above 40% relative humidity, the Generation transformer oil coolers become ineffective at higher loads as the cooler oil temperature goes into alarm. This, consequently, causes the transformer winding temperature to go in alarm, thus restricting the Unit from producing its maximum output.
We reduce the transformer cooling oil temperature by 10-12 °C in the summer months (ambient air temperature 49 °C with 50% relative humidity) such that the Unit is able to produce normal output without the transformer cooling oil temperature or the transformer winding temperature going into alarm.
Our special achievement was to install successfully this system in Ghazlan Power Plant for the first time in the history of Saudi Electric Company.
The 450 MW Transformer giving alarm at running on 370 MW, was extended it capacity to 430 MW by reducing temperature from 85°C to 45°C by fogging system without modification in transformer’s Radiators and without taking any shut down.
Also, we have done another project based upon above system for Engine Hall Cooling at Sharoorah Power Plant.
