考虑系统静态电压稳定性的电动汽车充电设备就地控制方法研究

发布时间：2019-05-27 23:03

【摘要】：随着电动汽车的大规模发展,其峰值充电负荷占全网负荷的比例日益上升,给电网的静态电压稳定带来了负面影响。试图将电动汽车充电设备纳入电力系统安稳控制,从而减少这一影响。提出了电动汽车充电设备的三种控制方法:灵敏度控制方法、理想控制方法以及下垂控制方法,并对其控制效果进行了对比。三种方法都能够达到提升系统负荷裕度的目的,但其中的下垂控制方法更适合实际控制应用。将下垂控制应用到新英格兰39节点系统,在不同渗透率和不同充电速率情况下分析其对系统电压稳定性的影响。结果表明下垂控制能够明显提高系统负荷裕度,是一种有效的电动汽车充电设备就地控制方法。
[Abstract]:With the large-scale development of electric vehicles, the proportion of peak charging load to the whole network load is increasing day by day, which has a negative impact on the static voltage stability of the power grid. This paper attempts to bring the charging equipment of electric vehicle into the stability control of power system, so as to reduce this impact. Three control methods of electric vehicle charging equipment are put forward: sensitivity control method, ideal control method and sag control method, and their control effects are compared. All three methods can improve the load margin of the system, but the sag control method is more suitable for practical control application. The sag control is applied to the 39-bus system in New England, and its influence on the voltage stability of the system is analyzed under the conditions of different permeability and different charging rate. The results show that drooping control can obviously improve the load margin of the system, and it is an effective local control method for electric vehicle charging equipment.
【作者单位】：广东电网公司电力科学研究院;清华大学电机系电力系统国家重点实验室;
【分类号】：TM71

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