The past few years has witnessed the inevitable trend of the development of smart grid

where the construction of Distribution Automation Management System is a key component.This paper discusses the performances and advantages of using broadband wireless communication technology to construct the smart grid.The operation of low-voltage meter reading is based on the combination of the second generation mobile communication technique-General Packet Radio Service（GPRS）and the third generation mobile communication technique-Wideband Code Division Multiple Access（WCDMA）.Then we evaluate the system performance of smart metering application operated in GPRS system as well as WCDMA system.The simulation results can provide theoretical guidelines when smart grids are deployed in realistic network.