摘要
随着光伏电站大规模接入电网,电网仿真分析对光伏电站模型准确性提出了更高的要求。光伏电站在有/无调度指令、正常/故障工况下采取不同的有功控制策略,表现出多时间尺度的动态特性。为了研究其动态特性,提出了一种适用于全过程动态仿真的光伏电站有功控制模型。该模型以光照强度/温度的持续波动、调度总站的限功率指令作为输入,通过站级AGC控制模型和逆变器控制模型实现对光伏电站有功功率特性的仿真。该模型在大型电力系统分析软件包的全过程仿真程序(PSD-FDS)中得到了实现,并利用宁夏电网实测数据对光伏电站在不同系统工况下的特性进行了模拟。仿真算例表明,该模型可为光伏电站的并网动态特性研究提供有效的仿真手段。软件包的全过程仿真程序(PSD-FDS)中得到了实现,并利用宁夏电网实测数据对光伏电站在不同系统工况下的特性进行了模拟。仿真算例表明,该模型可为光伏电站的并网动态特性研究提供有效的仿真手段。
As the large-scale integration of photovoltaic （PV） power station, a higher requirement is put forward by power grid analysis on the accuracy of PV station model. The PV station applies different strategies with/without scheduling instructions, or under normal/failure condition, so it has different characteristics in multi-time scale. In order to study its dynamic characteristics, an active power control model of PV power station suitable for full dynamic simulation was proposed, which could simulate the active power fluctuations of PV power station using light intensity/temperature and schedule command curves, by building station AGC control model and inverter control model. The proposed model was realized in PSD-FDS program and verified using measured data from Ningxia grid. The simulation results show that the proposed PV power station model could provide effective tool for analyzing the PV power station＇s dynamic characteristic.
出处
《电网技术》
EI
CSCD
北大核心
2015年第3期587-593,共7页
Power System Technology
基金
国家863高技术基金项目(2011AA05A103)
国家电网公司科技项目(合同号SGHB0000KXJS1400040)~~
关键词
光伏电站建模
自动发电控制
最大功率点跟踪
低电压穿越
photovoltaic power station modeling
automatic generation control
max power point tracking
low voltage ride through
