In this paper

the analysis is made based on the original monitoring data of the power quality toconclude that the main influence in the Lushui county silicon industrial park is not the voltage quality

harmonic flicker and excessive negative sequence current etc. Two control proposals are made preliminari-ly through analysis of site measurement data

are simulated and verified and screened to define the con-centrate control and to take the harmonic and negative sequence current as the key point and

at the sametime

with consideration of the power quality control proposal of the flicker

so to provide feasible evi-dence for the power quality control of the industrial park.