摘要
并网逆变器是连接微电网和公用电网的核心装置。简单介绍了基于微电网的并网逆变器在公用电网中的主要功能,总结了常见的逆变器拓扑结构。对目前多种实用的逆变控制策略进行了分析和对比,并对同步锁相和孤岛效应检测等微电网并网技术问题及其解决方案作了简单介绍。未来的微电网逆变技术发展趋势是将不同的控制方法进行整合形成复合控制,在向公共电网同步传输有功功率的同时,也能实现无功调节、谐波抑制和故障检测的功能。
Recently, with the development of micro-grid, micro-grid system is expected to play an active role in improving power quality, stability and reliability of power grid. The grid-connected inverters are the key devices in micro-grid and extensively concerned in the world. This paper presents the major effects and typical topological structures of grid inverters-connected based on micro-grid in power grid. Analysis and comparisons of various inverting control strategies are carried out, several technical problems and relevant solutions related to synchronous phase lock technique and anti-islanding detection are also briefly introduced. The prospective inverting techniques should be the compound and complex control systems by combination of different control strategies, with active power transfer, inactive power regulation, harmonic suppression and fault detection simuhaneously achieved.
出处
《浙江电力》
2009年第4期17-21,共5页
Zhejiang Electric Power
关键词
微电网
并网逆变器
控制策略
锁相技术
孤岛效应
micro-grid
grid-connected inverter
control strategy
phase lock technique
anti-islanding
