微电网建设中的模型与应用(一)

Model and Application of Microgrid Construction(1)

分散而断续的发电是电力产业变化的一个重要发展方向,随着新能源的发展使电网变得更加复杂,微电网便是其中之一。微电网是由风、光等发电装置,加上开关电源变流器、由PC等控制器进行管理,与市电网并联后形成双电源、双向能流,并能完善运行、保护的小型电力系统。本文系统阐述了微电网的发展、含义、特征、运行和控制,重点对微电网变流器工作原理进行分析。

Disperse and intermittent power generation is an important direction of the development of power industry. As the rise of new energy makes grid more complex, microgrid turns up. It is a small, perfect-operating-and-protecting power system managed by controllers like PC and paralleled with city grid to form double power and dual energy flow, which combines wind and PV generating apparatus with switching power converter. This paper systematically introduces its development, definition, features, operation and control, focusing on the analysis of the operating principle of microgrid converter.