Due to the rapid increase of integration of new energy sources

much attention has been paid to the improvement of peak load regulating and load regulation rate to enhance the safety and stability of the power grid. In this paper

the characteristics of regenerative system with five-stage low pressure heaters in a 1 000 MW ultra supercritical double-reheat unit were analyzed

both the stable and dynamic models of the regenerative system were developed. The results show that

the condensate load adjustment technology has been proposed to further exploit the thermal energy from low-pressure heating system. The theoretical condensate load adjustment ability of the unit agrees with the actual simulation test result. The total heat storage of 2 789~4 605 MJ contributes to the quick adjustment of the unit load. Meanwhile

compared with the conventional subcritical units

the double-reheat units applying the condensate throttling technology have more advantageous.