Charging algorithm for achieving bidirectional ordered charging and discharging of smart charging pile system

Abstract

The invention belongs to the technical field of ordered charging and discharging control over electric cars and particularly relates to a charging algorithm for achieving bidirectional ordered charging and discharging of a smart charging pile system. Because the algorithm has the function of intelligently sensing the real-time load power of a community and has a self-adjusting capability accordingto the remaining power supply power of the community, deployment can be conducted without upgrading and transforming a distribution network of the community, the costs for upgrading the distributionnetwork and expanding the capacity are reduced, and meanwhile the speed of deploying charging piles into the residential community is greatly increased; at the same time, the charging algorithm is conductive to achieving the peak-load shifting purpose of a power grid, the electric cars are used as mobile electric energy carriers, an energy storage effect of client sides is fully exerted, and a strong support is provided for comprehensively achieving a purpose proposed by the State Grid Corporation of China, wherein the purpose is to transform a car networking platform into a trading platform for interaction between the electric cars and the power grid and develop the platform into an intelligent integrated power management platform which extends to the customer side for energy storage andhas distributed power sources in order to support long-term development of the State Grid Corporation of China.

Description

technical field [0001] The invention belongs to the technical field of orderly charging and discharging control of electric vehicles, and specifically relates to a charging algorithm for an intelligent charging pile system to realize bidirectional orderly charging and discharging. Background technique [0002] With the explosive growth of sales of electric vehicles, a large number of electric vehicles will become commuting tools for urban residents and transportation in the city in the future. Analysis of their usage characteristics shows that such users have little demand for high-power fast charging. The charging mode will be a low-power and low-speed charging mode, and the charging time is mostly at night when parking in the parking space of the community, and it is expected that the charging price will be low to reduce its use cost. [0003] The typical specifications of low-power and low-speed charging services are in accordance with the regulations of GB / T-20234-2015, ...

AI Technical Summary

Problems solved by technology

The above research conclusion "two 80%" will add a lot of load to the existing power grid. Take Taiyuan Power Grid as an example: the annual maximum load is about 4 million kW. If Taiyuan City increases the number of electric vehicles by 200,000, According to 80% of the users charging according to the above usage mode, and the charging power of each vehicle is 7kW, it will generate 1.12 million kW of new power load for Taiyuan Power Grid, which is bound to have a greater impact on the distribution network, especially the construction In the older residential areas, the power load during the peak hours of residents' electricity consumption in the evening is superimposed on the charging power load of electric vehicles, which may cause the distribution network in residential areas to fail to meet the load requirements and trip, seriously affecting the quality of urban power supply. Explosive growth will make this contradiction more prominent

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