In this paper

the basic concept of customized power technology and main customized electrical equipment are described firstly

then power supply grade classification and application of the customized power technology is performed from the feature of power supply system and power need of one important customer. Finally

the monitoring analysis of power quality of the customer and site operation analysis of customized electrical equipment is developed. It is shown by the result that the customized power technology meets the customers’ special requirement to the power quality

assures safe and high efficient operation of power supply equipment of customer and

at the same time

limits the interference of the customer to the power supply network and power quality of adjacent customer into a reasonable level.The application proposal of power technology and the monitoring data formulated in this paper can provide reference for the improvement of electric energy quality.