电测与仪表2016，Vol.53Issue(12)：7-12,6.
一种基于 HHT 的光伏并网发电系统保护方法
A protection method of grid-connected PV power system based on HHT
摘要
Abstract
When the short circuit faults of grid-connected PV ( photovoltaic ) power system supply occurred , the fault current of PV power happens transient , due to the protective effect of inverter control circuit , the amplitude of fault current is small , as a result that the traditional detection methods cann ’ t satisfy the requirements of grid connected PV generation .In order to seek protection method for grid-connected PV power system , the simulation model was set up based on PSCAD/EMTDC, the characteristics of the short-circuit current are analyzed , and Hilbert-Huang transform ( HHT) was proposed to decompose the fault waveform of current , which found the instantaneous frequency of the fault current is changing when single-phase to ground fault occurs , with this the protection scheme of grid connected PV system based on HHT is proposed .The effectiveness and feasibility of this protection scheme are verified .关键词
光伏并网发电系统/保护/故障分析/HHTKey words
grid-connected PV generation system/protection/fault analysis/Hilbert-Huang Transform分类
信息技术与安全科学引用本文复制引用
程宏波,陈臣,王勋,伦利,闫俊丽..一种基于 HHT 的光伏并网发电系统保护方法[J].电测与仪表,2016,53(12):7-12,6.基金项目
国家自然科学基金资助项目（51267004）；江西省科技厅项目（2144BBE50008）；南昌市科技局项目 （）
