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一,前言战后日本经济高速发展的支柱之一就是供电量的大幅度增长。而供电量能快速增长则是由于电站热循环的高温高压化、高效率化和汽轮机、发电机单机功率的迅速提高。单机大功率化的发展情况,以三菱制造提供国内电力公司的7.5万瓩以上的机组为例,示于图1。图中纵座标为单机容量,横座标为正式投运年份。由图可知火电和核电机组大功率化迅速发展的情况。
I. Introduction One of the pillars of post-war Japan’s rapid economic development is the substantial increase in electricity supply. However, the rapid increase in power supply is due to the high temperature and pressure of the thermal cycle of the power station, the high efficiency and the rapid increase of the power of turbines and generators. The development of single-unit high-power generation is shown in Figure 1 using a unit of more than 75,000 units manufactured by Mitsubishi Electric for domestic power companies. In the figure, the ordinate is the stand-alone capacity, and the abscissa is the official commissioning year. From the figure we can see the rapid development of thermal power and nuclear power units.