规模化充电桩接入对城市配电网电压偏差的影响

Influence of Large-Scale Charging Piles on Voltage Deviation of Urban Distribution Network

摘要: 针对规模化充电桩接入对城市配电网电压偏差的影响问题，建立了基于Matlab/Simulink的IEEE33节点系统仿真模型，并通过对规模化充电桩接入后负载增长情况的预估，得到电动汽车渗透率在10%、30%、50%下各节点的负载大小；在进一步假设系统原有负载全部投入的情况下，运用仿真模型对比研究了在电动汽车不同渗透率下各节点的电压偏差情况。结果显示，当电动汽车的渗透率较低时，节点电压在允许的范围以内；而当电动汽车的渗透率达到50%时，便会出现部分末端节点电压偏低的现象。

Abstract: In order to solve the problem of voltage deviation caused by the large-scale charging pile connection, an IEEE33-node power system simulation model is built using Matlab/Simulink. Based on the forecast of the load growth after the large-scale charging pile connection, the load of each node under 10%, 30%, 50% permeability of the electric vehicle is obtained. Furthermore, the voltage deviation of each node under different permeability of electric vehicle is calculated by using the simulation model under the assumption that the original load of the system is all put into use. The results show that when the electric vehicle penetration is low, the node voltage is within the al-lowable range; and when the electric vehicle permeability reaches up to 50%, the phenomenon of part of terminal node voltage is lower than other nodes will occur.