分布式发电系统并网变流器防孤岛检测技术研究

摘要

With the development of new energy sources,the distributed power generation systems like photovoltaic and wind power have been applied widely,and the islanding effect detection is an important issue for the distributed grid-connected generation systems.Based on the review of the development of islanding detection technologies and anti-islanding testing technologies of distributed power generation systems,an anti-islanding effect testing platform for both the photovoltaic grid-connected inverters and wind power grid-connected converters was developed.The platform has realized the anti-islanding effect protection ability tests with the advantages of test and operation integration,simple operation and control,and high measuring accuracy,which not only can be used to verify the anti-islanding effect protection abilities for the grid-connected converters of distributed generation system,but also can be used to study the characteristics of different islanding detection methods,and provide the basis to select and optimize the islanding detection strategies for the grid-connected converters of distributed generation system.%在分布式并网发电系统孤岛检测技术及防孤岛效应保护能力测试技术发展现状的基础上，提出并研制了复合光伏并网逆变器和风力发电并网变流器的防孤岛效应试验平台。该平台实现了不同类型并网变流器防孤岛效应测试。不仅可用于验证分布式发电系统并网变流器的防孤岛效应保护能力，还可用于研究不同孤岛检测方法的特点，为并网变流器孤岛检测策略的选择及优化提供依据。