Whole plant simulation study on load rejection transient of CPR1000 employing advanced Mechanical Shim strategy

Optimization of rapid power reduction (RPR) design for advanced pressurized water reactor

“…The principle of reactor power control is shown in Figure 1. When the temperature deviation caused by power deviation increases to a certain level, different rates of rod lifting or insertion signals are generated, ultimately causing the temperature deviation to be less than 1 ℉ and achieving a quasi stable state of reactor power [1]. When the unit experiences a significant load reduction, the turbine control valve will quickly close, causing a rapid decrease in impulse stage pressure, resulting in a rapid decrease in the reference temperature.…”