高速公路服务区光储充电站运行控制

The Operation Control of the PV-Battery-EV Charging Power Plant at Expressway Service Area

本文以某高速公路服务区光储充电站示范项目为例,对光储充电站设计与控制进行了详细研究。针对服务区长馈电线路的特点,建立了光充储电站简化数学模型,在此基础之上对由分布式光伏发电接入引起的电压越限进行了分析计算,得到了光储充电站分布式电源接入峰值容量,提出了利用光伏逆变器无功能力提高光伏发电渗透率的方法,并确定了所需要的无功容量。提出了适用于光储充电站的控制策略,结合应用于现场的能量管理系统,搭建了实时数字仿真平台。仿真结果和现场试验证明了所提控制策略的正确性与有效性。

Taking one PV-battery-EV charging power plant demonstration project at expressway service area in Tianjin as an example,the design and control of PV-battery-EV charging power plants are studied in this paper.Aiming at properties of long feeders for the expressway service area,the simplified mathematical model of the PV-battery-EV charging power plant is established.And on the foundation of this model,voltage threshold crossing caused by distributed PV generation systems is analyzed,the peak capacity of distributed PV generation systems is calculated.A control scheme based on remaining capacity of PV inverters is proposed,and the reactive power demand is calculated accurately.Also,the management policy for the PV-battery-EV charging power plant is proposed.A HIL(hardware-in-the-loop)test system based on the RTDS platform with an energy management system which designed for the demonstration project is built.The simulation and experimental study verifies the effectiveness and stability of the proposed strategy.