电动汽车与电网互动双向电能检测系统研究

摘要

The V2G technology can not only alleviate the power grid voltage and frequency fluctuation caused by renewable energy and improve power grid’s efficiency, but also create benefits for the electric vehicle users. Consequently, the technology of Vehicle to Grid (V2G) is attracting people’s extensive attentions. The significance and the structure of the V2G system have been introduced in this paper. Two new interaction charging strategies of the electric automobile integrated with smart grid have also been introduced briefly, which are the distributed interactive strategy and the centralized interactive strategy. The designing of the bi-directional power detection system in the EVs integrated with smarter grid is mainly discussed. The detection system adopts Logic’s production of the dedicated electric energy metering chip CS5460A, which will provide a high accuracy in data collection, flexibility in control performance and a high cost performance, and is quite suitable for measuring bidirectional power in V2G system. It will make up for the deficiency of DC electric energy measurement system.%通过V2G技术，不仅可以缓解可再生能源引起的电网波动问题，提高电网效率，还可以为电动汽车用户创造收益。因此，V2G（Vehicle to Grid）技术正受到人们的广泛关注，介绍了V2G的意义和系统结构，并简要介绍了电动汽车连接智能电网的两种新型的互动充电策略：分散式互动策略和集中式互动策略。重点介绍了V2G技术中电动汽车与电网互动双向电能检测系统的设计。该检测系统利用了Cirrus Logic公司推出的电能计量专用芯片CS5460A，具有采集数据准确，控制性能灵活且性价比高的优点，适用于V2G系统中的双向电能检测，很好的弥补了市场上直流电能检测设备的不足。