Active safety charging power response complete device of electric vehicle charging facility

Abstract

The invention discloses an active safety charging power response complete device of an electric vehicle charging facility and relates to the field of electrics, in particular to the active safety response of the charging power of an electric vehicle charging facility. The device comprises a frequency measurement module and a response control module, wherein a special frequency measurement chip is adopted by the frequency measurement module to measure the frequency of a grid; and the response control module is used for responding with actions according to the data of the frequency measurement module. The device can be used for monitoring and responding the change of the grid frequency in real time. In the invention, N stages of response levels are set according to the frequency change degrees; when the frequency change is lower than a threshold value level, the response control module does not interfere the normal charging process of a charger; and when the grid frequency is abnormal and the frequency change reaches the threshold value level, the response control module sends out a control signal to adjust the trigger angle of a three-phase controllable rectifying circuit to regulate the charging power of the charger. The invention is characterized in that the device actively responds to the change of the grid frequency by stages and assists to maintain the safe and stable operation of the grid.

Description

technical field [0001] The invention relates to the electrical field, in particular to a complete set of active safety response devices for charging power of electric vehicle charging facilities. Background technique [0002] 1. Development of electric vehicle charging facilities [0003] With the vigorous development of low-carbon technology and green energy, the promotion and application of electric vehicles has received more and more attention. At present, the Chinese government strongly supports the development of electric vehicles and the construction of supporting facilities, and promotes electric vehicle demonstration projects nationwide. [0004] With the promotion of electric vehicles, electric vehicle charging facilities will grow rapidly. The charging power of electric vehicles is relatively large, and the charging load of a large number of charging vehicles will be a part of the urban load that cannot be underestimated; the uncertainty of charging power increas...

AI Technical Summary

Problems solved by technology

The charging power of electric vehicles is relatively large, and the charging load of a large number of charging vehicles will be a part of the urban load that cannot be underestimated; the uncertainty of charging power increases the difficulty of grid load forecasting; the operation of a large number of charging facilities will have no impact on the distribution network. Power balance poses serious challenges

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