电力系统自动化2012，Vol.36Issue(1)：51-54,4.
分布式电源中逆变器的故障特征和保护方案
Fault Characteristics and Protection Scheme of Distributed Generation Inverters
赵杰 1张艳霞 1宣文博 1徐陆宇1
作者信息
- 1. 智能电网教育部重点实验室,天津大学,天津市300072
- 折叠
摘要
Abstract
The switch function is used to analyze the DC side current characteristics of distributed generation（DG） inverters when short circuit or open circuit of the inner power switch tube and asymmetric short-circuit of the grid-connected AC side outlet happen.Based on the changing regularity of the DC side base wave and second harmonics magnitude under different types of faults,a new inverter protection scheme is proposed.The base wave and second order harmonics over current protections are added to the existing protection configuration to offset the deficiency of existing protection,which is normally unable to reflect all kinds of faults comprehensively and quickly enough.The photovoltaic grid-connected system model is established,and the correctness of faults characteristics and effectiveness of the protection scheme are verified.关键词
分布式电源/逆变器/开关函数/故障特征/保护Key words
distributed generation/inverter/switching function/fault characteristics/protection分类
信息技术与安全科学引用本文复制引用
赵杰,张艳霞,宣文博,徐陆宇..分布式电源中逆变器的故障特征和保护方案[J].电力系统自动化,2012,36(1):51-54,4.
