Ordered charging control method and device suitable for alternating current charging pile

Abstract

The orderly charging control method suitable for the alternating current charging pile comprises the following steps of obtaining current time and recording the current time as Ts, obtaining operation data of the charging pile and operation data of a distribution transformer, calculating the residual available capacity of the distribution transformer, and if the residual available capacity is larger than 0, adjusting and increasing the charging power of the charging pile, if the remaining available capacity is smaller than 0, the charging power of the charging pile is adjusted and reduced, if the remaining available capacity is equal to 0, the charging power of the charging pile is not adjusted, the current time is obtained again and recorded as Te, if (Te-Ts) is larger than or equal to the control period, the first step is executed immediately, and if not, the first step is executed after sleep (control period-(Te-Ts)) duration. The orderly charging control device suitable for the alternating current charging pile adopts the orderly charging control method suitable for the alternating current charging pile to carry out orderly charging control. The method is moderate in regulation and control, not only can guarantee that the distribution transformer is not overloaded, but also can guarantee free charging and full-power charging of the charging pile to the greatest extent, and improves the utilization rate of the distribution transformer.

Description

technical field [0001] The invention relates to the technical field of electric power internet of things, in particular to an orderly charging control method and device suitable for AC charging piles. Background technique [0002] In recent years, under the dual drive of policy and market, my country's electric vehicles have developed rapidly, and the trend of private cars becoming electric vehicles is obvious. As the number of electric vehicles continues to grow, more and more household AC charging piles are connected to the community, which will inevitably intensify the impact on distribution transformers and branch lines, especially for old communities. Without considering the load of electric vehicles, the connection of electric vehicles can easily lead to heavy overload trips and even electrical safety accidents. For new communities, disorderly charging of electric vehicles will inevitably require consideration of a large distribution transformer reserve capacity, whic...

AI Technical Summary

Problems solved by technology

[0004] It should be realized that as long as the card is swiped or the code is scanned, the general AC charging pile will start to charge at a higher power, and will not wait for the control command to start charging. The above-mentioned orderly charging method depends on the customized charging pile model. If the charging pile does not support The orderly charging mechanism of "request"-"response" cannot be realized by the above-mentioned orderly charging method

At the same time, the above-mentioned orderly charging method is also highly dependent on communication. When the communication quality drops or even communication fails, the newly connected vehicle cannot request charging, which will cause the owner to wait in vain and affect the charging experience.

In addition, the range and depth of charging power regulation depends on thresholds and rules. Threshold setting is always an unavoidable problem. If the setting is unreasonable, it will affect the effect of orderly charging. Variable capacity cannot be fully utilized. For example, when the distribution transformer load rate is always between threshold 1 and threshold 2, all newly connected vehicles can only be charged at a lower power, and the distribution transformer is not overloaded at this time. In fact, Newly connected vehicles can be charged according to the rated power

Images