Research and practice on the EV station-to-grid interactive operation optimization technology

doi:10.3969/j.issn.2097-0706.2022.06.005

Abstract

Abstract:

To address the contradiction between the large-scale construction of charging facilities for electric vehicles（EVs）and the limited supply capacity of the existing power grid,a new EV station-to-grid（S2G） interactive operation optimization technology is proposed.The technology engaged EVs into the demand-side response control in the power grid based on the main principles of the EV charging stations participating in source-load interaction.The application effect of the technology has been analyzed by practical cases.The S2G interactive operation optimization technology can smooth the load curve of charging piles and realize peak shaving with the loads of charging stations.Moreover,the technology can boost clean energy consumption,alleviate the impact of charging facilities on the power grid and save the investment in grid construction.

Key words: electric vehicle, charging station, station-to-grid interaction, source-load interaction, demand side response, operation optimization technology, carbon neutrality

CLC Number:

TK019：TK02

ZHANG Yongxin, YAN Pengling, ZHU Guodong. Research and practice on the EV station-to-grid interactive operation optimization technology[J]. Integrated Intelligent Energy, 2022, 44(6): 45-51.

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项目	技术参数
输出功率/kW	450
充电接口	最多可同时连接8个充电接头
充电方式	动态分配
输出直流电压/V	200~750
输入交流电压/V	380×（1±15%）
输入频率/Hz	45~65
整机效率/%	峰值≥96
稳压精度/%	≤±0.5
稳流精度/%	≤±1.0
纹波系数	有效值≤±0.5%;峰值≤±1.0%
功率因数	≥0.98
总谐波含量/%	≤5
噪声/dB	≤65
外形尺寸(长×宽×高)/mm	1 800×800×1 910

设备	技术参数	单位	数量
磷酸铁锂电池	768 V/50 A·h/38.4 kW·h	套	21
储能变流器	630 kV·A	台	3
BMS		套	21
高压箱	1 000 V/250 A	台	21
直流汇流柜	7汇1,DC 1 000 V/1 000 A	台	3
消防系统	七氟丙烷自动灭火系统（集装箱内）	套	1
消防系统	脉冲式气溶胶系统（电池箱内）	套	1
空调	MC50	台	2
集装箱	1 000×2 300×2 300 mm（长×宽×高）	台	1