The Analysis And Management Of The Influence Of The Electrified Railway On Yulin Area Power Grid Power Quality

With the rapid development of China’s railway construction,electrification of railway construction also will accelerate the electrification of the railway transportation system is an important part,but also the important guarantee for China’s economic and social development.However,by the nonlinear load locomotive power,impact,three-phase distribution asymmetry effects in electric locomotives running will bring power system harmonics,voltage fluctuations,negative sequence current and other related power quality problems,traction power supply affect the economy to a certain extent,also led to the power system on a further decline in the quality of supply.Therefore,the need to adopt the necessary compensatory measures to achieve the electrified railway power quality for effective governance to ensure the safe operation of electric locomotives,traction power supply system is reliable and stable.Firstly,a detailed analysis of traction load characteristics based on the combination of electrified railway operating characteristics to identify the main factors affecting the quality of its electric power supply system,to achieve the electrified railway power quality prediction study in-depth discussion.Secondly,the actual situation of power supply Yulin area,and establish a mathematical model of electrified railway power supply systems,mathematical modeling by way of further analysis of the quality of the impact of electrified railway on power grid Yulin area.Again,through the analysis of the influence of the electrified railway load on the power quality filter designed to improve grid power qualityFinally,the trend of the Yulin area analyzed,improved electric locomotives caused by harmonic and negative sequence current treatment recommendations.