电力专业英语第七讲分析.pptx

电力系统专业英语;词汇;课文内容;The Steam Turbine The steam-mechanical energy conversion is a thermodynamic process by which the steam is expanded through the high-, medium-, and low-pressure turbines, normally all on one shaft. High-pressure and high-temperature steam energy from a boiler is converted into mechanical energy through the turbine blades, and transmitted to the shaft. The steam-mechanical energy conversion蒸汽中能量与机械能的转换 thermodynamic process热动过程 Shaft转轴 turbine blades汽轮机叶片; ; the steam chamber in front of the high-pressure turbine, which causes a time delay of the steam flow; the reheater between the high-and medium-pressure turbines, which causes another time delay; and the crossover connection between the medium-and low-pressure turbines, which causes still another time delay of the steam flow. Many other types of steam turbines are in use. the steam chamber蒸汽室 a time delay一个延时 Reheater再热器 crossover n. 转换器 ? ;The Governor The function of a governor of an electric power plant is to maintain a constant speed, usually the synchronous speed of the turbine-generator set. A speed drop of the set due to an increase of electric power output will send the speed signal to the governor to increase the mechanical power input to the turbine(s), and a speed rise to decrease the mechanical input, maintaining a constant speed. Governor调节器;调速器 usually the synchronous speed of the turbine-generator set ?通常是配套汽轮机与发电机的同步转速 ;The governor of the major plant of a power area or subsystem is also given the function of power and frequency control of the area in a large interconnected electric power system. The governor responds not only to the scheduled electric power interchange among areas, but also to the change in system frequency due to local load variations. The governor of the major plant of a power area or subsystem 区域或地区电力系统主电站的调速器 in a large interconnected electric power system在一个大的电网系统 the scheduled electric power interchange计划的电能交换 local load variations当地负荷的变化;Another use