摘要
提出计及电动汽车充电桩无功响应能力的电网节能降损控制方法。首先分析了充电桩作为无功源的特征以及无功调压原理,进而提出了考虑日前优化调度和日内优化修正的无功电压优化模型,日前优化调度利用传统并联电容器组和有载调压变压器以降低网损,日内正常运行时利用电动汽车充电桩无功支撑来降低网损。提出了基于无功电压灵敏度的时序递进的无功控制方案。最后,以含风电的IEEE30节点系统为算例验证了该节能降损控制方法的有效性。
Considering the reactive power response capability of electric vehicle chargers （EVCs）, an energy-saving and loss-reduction control method is proposed for power grid. First, the characteristics of EVCs as reactive power and the theory for volt-var control are analyzed. Then, a volt-var optimal control model is proposed by combining the day- ahead optimal scheduling and the optimal adjustment within a day, in which ordinary capacitor banks （CBs） and on- load tap changers （OLTCs） are adopted in the day-ahead optimal scheduling to realize a minimum power loss, while the reactive powers of EVCs are used to reduce the power loss within a day. Moreover, a reactive power control scheme is proposed based on the progression of time sequences of reactive voltage sensitivity. Finally, a modified IEEE 30-node system with wind power is utilized to validate the proposed method.
出处
《电力系统及其自动化学报》
CSCD
北大核心
2017年第5期129-134,共6页
Proceedings of the CSU-EPSA
关键词
节能降损
有载调压变压器
并联电容器组
电动汽车
充电桩
风电
energy-saving and loss-reduction
on-load tap changer （OLTC）
capacitor bank
electric vehicle （EV）
charger
wind power
