Research On Electric Power Quality For Grid-connected Electric Vehicle Charging Station With Photovoltaic Power

With the global energy crisis and worsen of environment pollution, ecological protection, energy saving and emission reduction are the biggest tasks of the world. The development of electric vehicle ushers in the best opportunity. The electric vehicle is the best transportation tool to achieve energy conservation and environmental conservation. In the future, with the rapid increase of electric vehicle, the construction mode of electric vehicle charging station that only utilizes traditional power grid is not very prominent in energy saving and emission reduction. This construction mode can only change regional environmental quality. So, the construction mode of electric vehicle charging station with photovoltaic power is significant. Base on the actual situation of electric vehicle charging station with photovoltaic power in Heilongjiang electric power science research institute, the author analyses the electric power quality for grid-connected electric vehicle charging station with photovoltaic power by means of simulation and measurement, and puts forward the solutions on the emerging problems in analysis to guarantee safety and steady operation of power grid.The following studies are done in this thesis:First, the author discusses the construction mode of electric vehicle charging station with photovoltaic power in terms of structure, function and operation.Next, the author simulates the electric power flow and voltage deviation of electric vehicle charging station with photovoltaic power by software of PSASP, and measures the harmonic and voltage deviation of electric vehicle charging station with photovoltaic power. Then, the author compares the simulation data and the measured data, estimates the impact connected to the power grid, puts forward the solutions, and summarizes the technical measures to guarantee harmonious progression between electric vehicle charging station with photovoltaic power and power grid.