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Regeneration in Rankine Cycle
With help of steam extracted from turbine , Increasing the temperature of condensate water (LPH) and Feed Water (HPH) is called regeneration system of Rankine cycle on which the thermal power plant is works`
How to charge LPH
After load of generator gets more than 25% of rated then we can charge the LP heaters
step1 open steam vent of LPH vessel
step 2 open drain to 100% and close the drip
step 3 open extraction valve and when pressure gets more than lower heater pressure open the drip and close the drain watching water level of vessel
step 4 close the vent of vessel
HOW TO CHARGE HPH
After load gets more than 40% of rated we can start charging HPH one by one
step1 open steam vent of HPH vessel
step 2 open drain to 100% and close the drip
step 3 open extraction valve partially by inching and when pressure gets more than lower heater pressure open the drip and close the drain watching water level of vessel
step 4 close the vent of vessel