广东电力2017，Vol.30Issue(6)：40-45,6.DOI:10.3969/j.issn.1007-290X.2017.06.009
自然坐标系下的光伏零电压穿越
Photovoltaic Zero-voltage Ride Through in Natural Coordinate
胡松 1蔡昊1
作者信息
- 1. 河海大学 能源与电气学院,江苏 南京211100
- 折叠
摘要
Abstract
In order to realize zero-voltage ride through (ZVRT) of photovoltaic (PV) grid-connected inverter, this paper presents a kind of ZVRT control strategy in the natural coordinate which dispenses with phase-locked loop and reduction of coordinate transform and can reduce control complexity as well as avoid overshoot of grid-connected current caused by control delay due to phase-locked loop. It respectively discusses ZVRT control of the PV inverter under symmetrical and asymmetrical faults. Under the symmetrical fault, it can realize ZVRT by active and reactive power current coordination control, while under asymmetrical fault, it realizes ZVRT by restraining negative sequence component of grid-connected current and controlling positive sequence active and reactive power current. Simulation results indicate reasonability and effectiveness of this ZVRT control strategy for the PV grid-connected inverter under two different fault conditions.关键词
自然坐标系/光伏并网逆变器/零电压穿越/不平衡控制/负序电流Key words
natural coordinate/photovoltaic grid-connected inverter/zero-voltage ride through/unbalance control/negative sequence current分类
信息技术与安全科学引用本文复制引用
胡松,蔡昊..自然坐标系下的光伏零电压穿越[J].广东电力,2017,30(6):40-45,6.
