分布式电源并网后的自适应负载反孤岛方法  

Adaptive load anti-islanding method of grid-connected distributed power system

作　　者：吴顺风 江明[1] 杨晨悦 陈晓宇[2] 

机构地区：[1]安徽工程大学检测技术与节能装置省级实验室,芜湖241000 [2]东南大学电气工程学院,南京211100

出　　处：《电子测量与仪器学报》2016年第1期52-57,共6页Journal of Electronic Measurement and Instrumentation

基　　金：国家自然科学基金(61271377)

摘　　要：大量分布式光伏电源并网后,孤岛问题愈加突出。先分析了现有的一些反孤岛方案,并分析了其优缺点。随后,提出了采用自适应负载反孤岛的方案,即利用负载的自动投切,改变整体负载的特性,使得被动式反孤岛无死区。并采用PSCAD对该方案进行了仿真,验证了该方案的实用性。为尽量减少分布式光伏电源并网的投资,该方案依托于新一代的分布式光伏并网接口及反孤岛装置实现。随后介绍了反孤岛系统的整体构架及功能配置。该系统能解决大量分布式光伏电源发生孤岛运行后的快速离网问题,为分布式光伏电源的大面积并网打下坚实基础。A large number of distributed photovoltaic power grid, islanding problems become more prominent. Firstly, this paper analyzes some existing anti-islanding scheme, and analyzes its advantages and disadvantages. Then, this paper proposes adaptive anti-islanding scheme by using the load, i.e. load automatic switching, chan- ging the characteristics of the whole load, make the passive anti-islanding without dead-zone. And the scheme is simulated by using PSCAD to verify its practicability. To minimize the distributed photovoltaic power grid invest- ment, the scheme is realized based on a new generation of distributed photovohaic （PV） grid interface device. Fi- nally, the paper introduces the overall structure and function of the device configuration. The device not only can solve the problem of area of backup protection, but also save on investment, convenient for on-site equipment in- stallation and maintenance, therefore it lays a solid foundation for the widespread promotion of distributed photovol- talc power grid.

关 键 词：分布式光伏并网 孤岛检测 自适应变换负载 并网接口及反孤岛装置 

分 类 号：TP23[自动化与计算机技术—检测技术与自动化装置]