In recent years, many countries have started to integrate the power system with more advanced information and communication technologies. With transforming the electrical data to useful information, the stability and reliability of power system operation can be secured. By observing this world-wide trend, it is believed that the development of smart grid would be the vital strategy for energy saving, integration of renewable energy resources, and improvement of power quality. Meanwhile, the related measuring and control equipments are necessary to redesign based on information and communication technologies (ICT), which are key factors to the success of the smart grid implementation. This paper gives an overview of some important issues and techniques for the enhancement of power quality monitoring and analysis when deploying the smart grid.