在使用配套电机和负荷大小不稳等情况的一些地方,由于使用的电机都是按最大负荷而选配的,因此在实际运行中,达到满负载的情况并不多。例如我厂使用的170系列氨制冷压缩机的配套电机为135KW,但在实际运行中高负荷时只达额定功率的80％,低时只有35％左右。这不仅浪费了大量的电能,而且严重降低了整个厂区电网的功率因数。这种现象,在当前节能工 In some places such as supporting motors and unstable load, the motors used are all matched with the maximum load. Therefore, there is not much full load in actual operation. For example, our factory used 170 series ammonia refrigeration compressor supporting motor 135KW, but in the actual operation of high load only reached 80% of rated power, low only about 35%. This not only wastes a lot of power, but also severely reduces the power factor of the entire plant grid. This phenomenon is currently under energy saving