Electric vehicle power charging and changing station's electric energy quality assessing method
A technology for power quality and charging and swapping stations, which is applied in the field of power quality assessment of electric vehicle charging and swapping stations, can solve problems such as the inability to comprehensively evaluate data related to power quality, and achieve the effect of improving operation, maintenance and management capabilities and ensuring orderly access.
Inactive Publication Date: 2017-09-08
STATE GRID SICHUAN ELECTRIC POWER CORP ELECTRIC POWER RES INST +1
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Problems solved by technology
[0004] What the present invention aims to solve is the problem that it is impossible to comprehensively evaluate the power quality related data after the electric vehicle charging and swapping station is connected to the power grid
Method used
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Embodiment
[0024] figure 1 It is a schematic flow chart of the method for evaluating the power quality of an electric vehicle charging and swapping station in this embodiment. The method for evaluating the power quality of an electric vehicle charging and swapping station includes:
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The invention discloses an electric vehicle power charging and changing station's electric energy quality assessing method, comprising the following steps: acquiring the three-phase voltage and the three-phase current of a battery charger at the alternating current side in different working points as well as the voltage and the current at the direct current side; based on the three-phase voltage and the three-phase current of a battery charger at the alternating current side in different working points as well as the voltage and the current at the direct current side, obtaining the testing data for the battery charger at different working points corresponding to the various electric energy indexes; based on the testing data for the battery charger at different working points corresponding to the various electric energy indexes, creating an electric energy quality characteristic index matrix; creating the weight vectors for the various electric energy indexes; and according to the electric energy quality characteristic index matrix and the weight vectors for the various electric energy indexes, obtaining a comprehensive assessment coefficient. The electric vehicle power charging and changing station's electric energy quality assessing method proposed by the invention assesses the electric energy quality problems of an electric vehicle power charging and changing station comprehensively according to the on-site actually-measured data so as to realize the comprehensive assessment to the electric energy quality of the electric vehicle power charging and changing station.
Description
technical field [0001] The invention relates to the technical field of power system analysis, in particular to a method for evaluating the power quality of an electric vehicle charging and swapping station. Background technique [0002] Electric vehicles refer to vehicles powered by vehicle-mounted power supplies, driven by motors to drive wheels, and in compliance with the requirements of road traffic safety regulations. At present, in the technical route of various new energy vehicles, electric vehicles represented by hybrid, pure electric vehicles and fuel cell vehicles are generally considered to be the main direction for the transformation and development of future automotive energy and power systems, and have become the world's automobile power and Development priorities of major automakers. [0003] Due to the increasingly severe energy crisis and environmental pollution problems, countries are vigorously promoting the application of electric vehicles, and charging f...
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Login to view more IPC IPC(8): G01R31/00
CPCG01R31/00
Inventor 徐琳李训林瑞星杨华
Owner STATE GRID SICHUAN ELECTRIC POWER CORP ELECTRIC POWER RES INST
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