| 引用本文: | 王磊,武小龙,侯俊贤,王铁柱.光伏经多端柔性直流输电并网的控制研究[J].电力系统保护与控制,2019,47(4):65-72.[点击复制] |
| WANG Lei,WU Xiaolong,HOU Junxian,WANG Tiezhu.Control of photovoltaic power integration based on multi-terminal VSC HVDC system[J].Power System Protection and Control,2019,47(4):65-72[点击复制] |
|
| 摘要: |
| 为解决大规模光伏电站远距离输电问题，采用光伏电站接入基于直流电压-有功功率-交流电压控制的多端柔性直流输电系统的并网方案。利用Matlab/Simulink仿真软件构建了一个包含两座光伏电站和一个无源网络的五端柔性直流输电系统模型，并对该系统的运行特性进行了详细的仿真分析。仿真结果表明，当光伏电站的输出功率发生波动时，五端柔直系统传输的有功功率可实现自动平衡；当电网发生三相短路故障时，光伏电站依然能够稳定运行，具有较好的故障穿越能力。 |
| 关键词: 光伏并网 多端柔性直流输电 故障穿越 控制策略 仿真分析 |
| DOI：10.7667/PSPC180254 |
| 投稿时间：2018-03-10修订日期：2018-04-27 |
| 基金项目:国家重点研发计划(2016YFB0900600); 国家电网公司科技项目(XT71-15-066) |
|
| Control of photovoltaic power integration based on multi-terminal VSC HVDC system |
| WANG Lei,WU Xiaolong,HOU Junxian,WANG Tiezhu |
| (Photovoltaic Research Center of MOE Hefei University of Technology, Hefei 230009, China;China Electric Power Research Institute, Beijing 100192, China) |
| Abstract: |
| In order to solve the problem of long-distance transmission of large-scale photovoltaic power stations, a multi-terminal VSC HVDC system based on DC voltage-active power-AC voltage control strategy, which is connected with photovoltaic power stations, is designed in this paper. Using Matlab/Simulink, a five-terminal VSC HVDC model is constructed to verify the feasibility of the scheme. The model includes two photovoltaic power stations and a passive network. A series of simulations are carried out based on the model. The results show that the active power of the system can be automatically balanced when the output power of photovoltaic power stations changes. When the three-phase short circuit fault occurs in power grid, the photovoltaic power stations can still run in a stable state and have better ability of Fault Ride-Through (FRT). This work is supported by National Key Research and Development Program of China (No. 2016YFB0900600) and Science and Technology Project of State Grid Corporation of China (No. XT71-15-066). |
| Key words: photovoltaic power integration multi-terminal VSC HVDC fault ride-through (FRT) control strategy simulation analysis |
