电气传动2019，Vol.49Issue(9)：82-87,6.DOI:10.19457/j.1001-2095.dqcd18753
变频器LVRT及电网适应性测试装置研究与应用
Research and Application of the Device for Testing LVRT and Grid Adaptability
徐在德 1辛建波 1范瑞祥 1舒展 1潘建兵 1杨磊2
作者信息
- 1. 国网江西省电力有限公司电力科学研究院,江西 南昌 330096
- 2. 南昌大学信息工程学院,江西 南昌 330031
- 折叠
摘要
Abstract
In order to study the response characteristics of inverter in fields of grid connected with renewable energy and motor speed regulation under power grid failure,the traditional low voltage ride through(LVRT)scheme and effects of the inverter was analyzed,the integrated schemes based on the power electronics(by AC source and DC source respectively)was proposed and then a 40 kW AC-DC LVRT test device was developed with a view to achieve the real-time regulation of DC output voltage and the dynamic control of the magnitude and time of voltage sags,as well as frequencies and harmonics of AC three-phase and single-phase output voltage by adopting three-phase four-wire topology and adaptive fuzzy PI control algorithm. According to the laboratory tests,the dynamic response speed of this test device is less than 5 ms,the harmonic content of its AC output voltage is less than 1% and its protection strategy is complete and reliable. Parameters can be set by upper computer online or offline and the automatic cycle test is applicable. The device is easy to operate.关键词
电力电子/低电压穿越/逆变器/自适应模糊PIKey words
power electronics/low voltage ride through(LVRT)/inverter/adaptive fuzzy PI分类
信息技术与安全科学引用本文复制引用
徐在德,辛建波,范瑞祥,舒展,潘建兵,杨磊..变频器LVRT及电网适应性测试装置研究与应用[J].电气传动,2019,49(9):82-87,6.
