额定范围 meaning in English

nominal range
rated operating range
rated range

This article emphatically discussed and analyzed following points : load command feed forward function can improve the rapid respond character of steam turbine generator ; lead of load command have advance control function on boiler main control and can highly improve the stability of main steam pressure ; the use of predict control and state space variable function can improve the quality of boiler steam temperature control effectively , control the steam temperature in the defined range and increase the boiler and turbine life and efficiency even if working state changed in a big range ; linear compensation can restrain the vibration of generator load in the condition of big loa d change
本文重点讨论、分析提出负荷指令前馈作用可以提高汽轮发电机快速响应特性；负荷指令的导前功能对锅炉主控有超前控制作用，能显著提高主蒸汽压力的稳定性；采用预测及状态空间法能有效改进锅炉蒸汽温度控制品质，在大幅度工况变化下仍有效控制蒸汽温度在额定范围内，提高锅炉、汽轮机寿命及其效率；汽轮发电机组的快速响应性与汽轮发电机组负荷振荡问题间的平衡关系，采用线性补偿可以有效抑制在负荷变化梯度较大情况下发电机负荷振荡问题。