I. Introduction
Power Quality information is not only an important part of AMI (Advanced Metering Infrastructure) in smart grid and is an important part of technical support system of the electricity market, but also is one of the constraints in making tariff policy [1]–[4]. Improving the quality of power is also an important part of auxiliary services of electricity market.so the power quality monitoring and evaluation is necessary of smart grid development and operation of power market[5][6].