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目前对异步电动机已广泛应用电力电容器进行无功就地补偿,以改善功率因数和节能。但GB12947《三相异步电动机经济运行》和有关标准都一致强调,异步电动机无功就地补偿必须在安全条件允许下进行。本文就此问题之一——电源谐源对无功就地补偿器的安全运行影响和改善措施作讨论。一、源谐波的产生随着工业节能技术的发展,供电系统中的非线性负荷日益增多,例如大功率换流设备、变频器、轧机、电弧炉、电焊机和电力机车的大量应用,某些家用电器数量急剧增长,使
Current asynchronous motors have been widely used in power capacitors on-site compensation in order to improve the power factor and energy saving. However, GB12947 “three-phase asynchronous motor economic operation” and the relevant standards are unanimously emphasized that the asynchronous motor reactive compensation in situ must be allowed under safety conditions. In this paper, one of the problems - the power source harmonics on the safe operation of reactive power compensator and improvement measures for discussion. First, the source of harmonic generation With the development of industrial energy-saving technologies, the increasing non-linear load on the power supply system, such as high-power converter equipment, inverter, rolling mill, electric arc furnace, welding machine and electric locomotive a large number of applications, a The dramatic increase in the number of household appliances