Power distribution network power quality monitoring and comprehensive evaluation system and method

The invention discloses a power distribution network power quality monitoring and comprehensive evaluation system and method. The method comprises the following steps: S1, monitoring power quality indexes through a power quality monitoring terminal, and summarizing the power quality indexes by a monitoring center master station; s2, performing dimensionless processing on the power quality indexesthrough range change, and obtaining objective weights of the power quality by applying a CRITIC method; s3, obtaining a subjective weight by applying an improved expert scoring method; s4, performingsubjective and objective combination to obtain a combined weight; and S5, grading the electric energy quality standard data, and obtaining an evaluation result and a corresponding electric energy quality grade through a weighted TOPSIS method. The electric energy quality indexes are monitored based on the electric energy quality monitoring terminal, and combined evaluation analysis is carried out,so the limitation of a sin