Analysis And Research On Power Quality Of Puning Power Grid

Electricity,as a type of economic and clean energy,can be easily transported,controlled and converted.It is essential for improving the personal living and the world economy.Due to the development of our science,technology and society,our electricity network continuously expands.The significant increase in load,particularly impulse and non-linear load,creates lot of power quality problems including voltage distortion,voltage fluctuations,power-line flicker,unbalanced three phase etc.The power quality is worsening as the network disturbance constantly increases.Recently there are more accidents caused by power quality in the regions including Puning.From the statistics provided by 95598(electricity consumer helpline),more than half of the customer's complains,in Puning region since 2014,are about power quality issues.Therefore,the improvement in the power quality management is essential.This paper mainly carried out the following three aspects of the work:1.The analysis of power quality problems to the power grid is derived,the possible impact of the main,electric power harmonic voltage deviation,three-phase unbalance and the causes of interruption of power and influence are analyzed.2.Through the voltage monitoring system,dispatching automation system,three measurement automation system,to extract the puning grid running real-time data,calculation and analysis mainly to quality problems of puning grid.3.The combination of puning grid power quality problems,combined with previous regulation measures,put forward the optimization scheme of improving power quality.