Research of power quality comprehensive evaluation of regional power grid

In order to asses the power quality of all regions in Guangzhou power grid, this paper proposes an algorithm of regional power quality evaluation method. The evaluation system which include integrated power quality index was designed based on the six national standards indicators, which is assessed was divided into two levels. G1 method and “vertical and horizontal” scatter degree method were used for weighting subsystems and largescale systems. Finally, applying this method, real-time data of power quality monitoring system was extracted for comprehensive evaluation, regional implementation of coloring methods show that the methodology is effective.