南方电网技术2024，Vol.18Issue(3)：14-25,92,13.DOI:10.13648/j.cnki.issn1674-0629.2024.03.002
大规模光伏经柔性直流送出系统交流侧故障穿越特性分析及参数优化
AC Fault Ride-Through Characteristics Analysis and Parameters Optimization of Large-Scale Photovoltaic Power Transmission System via VSC-HVDC
摘要
Abstract
In order to study the influence of AC faults on the DC voltage and active power of large-scale photovoltaic(PV)power transmission system via voltage source converter based high voltage direct current(VSC-HVDC)during the fault ride-through process,a modeling and analysis method based on equivalent controlled current source model is proposed.Firstly,the AC fault ride-through characteristics of the large-scale photovoltaic power transmission system via VSC-HVDC are qualitatively analyzed,and the influence of AC-side fault at the sending-end on the DC voltage of the VSC-HVDC is indirectly translated into the research of the ac-tive power characteristics of the system.Then,based on the operation control characteristics of the PV side inverter and the sending-end converter station during the fault,the equivalent controlled current source model of the whole system is established to explore the influence of the current setting value of the PV side inverter and the current limiting value of the sending-end converter station on the active power transmission characteristics,and then the optimal design method of the current parameters of the PV side inverter and the sending-end converter station during the fault period is proposed.Finally,the effectiveness of the proposed method is verified by PSCAD/EMTDC simulation.关键词
光伏/柔性直流系统/故障穿越/等效受控电流源模型Key words
photovoltaic power/VSC-HVDC/fault ride-through/equivalent controlled current source model分类
动力与电气工程引用本文复制引用
张野,李凌,杨子千,熊莉,唐王倩云,刘蔚..大规模光伏经柔性直流送出系统交流侧故障穿越特性分析及参数优化[J].南方电网技术,2024,18(3):14-25,92,13.基金项目
国家自然科学基金青年科学基金资金项目(52207110). Supported by the National Natural Science Foundation of China Youth Science Foundation Project(52207110). （52207110）
