Online monitoring, analysis and evaluation system of electric vehicle charging station

Abstract

The invention discloses an online monitoring, analysis and evaluation system of an electric vehicle charging station. The system comprises collecting terminal units, a vehicle-mounted terminal unit, an FPGA (field programmable gate array) and PCI (peripheral component interconnect) interface unit and an embedded industrial personal computer; a plurality of the collecting terminal units and the embedded industrial personal computer constitute an electric vehicle charging station online monitoring platform which is used for collecting a point of common connection of the charging station as well as voltage and current of each charger; the FPGA and PCI interface unit is used for realizing data exchange of the plurality of the collecting terminal units and the industrial personal computer; the vehicle-mounted terminal unit transmits information about changing and the operation state of an electric vehicle to the embedded industrial personal computer; and comprehensive evaluation on states of the electric vehicle is performed with a radar map method, and probability distribution of the initial charging time, the initial charge state and a daily travelled distance is counted and analyzed. The system is stable and reliable, can realize long-term monitoring of the charging station, and provides a large quantity of reliable monitoring data for operation and planning of the charging station.

Description

technical field [0001] The invention relates to the field of electric vehicles, in particular to an online monitoring, analysis and evaluation system for electric vehicle charging stations. Background technique [0002] With the promotion and application of electric vehicles, charging facilities such as charging and swapping stations are also gradually being built. However, the large-scale connection of charging facilities to the grid will bring load shocks to the grid, and have a non-negligible impact on the power quality, network loss, and equipment utilization of the grid. Electric vehicle charging characteristic data, mainly including initial charging time, initial state of charge and daily driving mileage, are very important for studying the impact of electric vehicle charging process on power distribution. , Electric vehicle battery energy management and other aspects of monitoring and analysis of electric vehicles and chargers, there is no statistical analysis specif...

AI Technical Summary

Problems solved by technology

However, the large-scale connection of charging facilities to the grid will bring load impacts to the grid and have a non-negligible impact on the power quality, network loss, and equipment utilization of the grid.

Electric vehicle charging characteristic data, mainly including initial charging time, initial state of charge and daily driving mileage, are very important for studying the impact of electric vehicle charging process on power distribution. , Electric vehicle battery energy management and other aspects of monitoring and analysis of electric vehicles and chargers, there is no statistical analysis specifically for the charging characteristic data of electric vehicles, nor is there an analysis of the operating characteristics of chargers and distribution transformers and the status of electric vehicles. Comprehensive Evaluation

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