光伏电站低电压穿越技术要求与实现  

Requirements and Realization of the Low Voltage Ride Through Technologies in PV Power Stations

作　　者：陈波[1] 朱晓东[1] 朱凌志[1] 施涛[1] 曲立楠[1] 

机构地区：[1]国网电力科学研究院南京南瑞集团公司,江苏南京210003

出　　处：《电网与清洁能源》2017年第8期77-81,共5页Power System and Clean Energy

摘　　要：针对大型光伏电站在电网扰动或故障时突然脱网给电网带来的不利影响,提出了一种基于光伏逆变器的光伏电站低电压穿越控制策略,并进行仿真分析。结果表明该方法能够保证光伏逆变器在电网电压跌落时不过流,同时能够发出一定的无功功率以支撑并网点电压,具备低电压穿越的能力。For the adverse effects of the large-scale photovoltaic power plant which is suddenly off the grid when a disturbance or fault occurs to the grid, a control strategy of Low Voltage Ride Through（LVRT） technologies for PV plants based on the PV inverter is proposed and the related simulation analysis is carried out. The analysis result shows that the proposed method can ensure that no over current occurs to the PV inverter at a voltage dip of the power grid, and certain reactive power is generated to support the voltage at the connecting point, therefore it possesses the ability of LVRT.

关 键 词：光伏电站 低电压穿越 电压跌落 无功输出 

分 类 号：TM615[电气工程—电力系统及自动化]