CAJ | 학술논문

微电网相对于大电网有并网运行和孤岛运行两种运行模式，其中孤岛运行又称为离网运行。为了实现微电网与大电网之间进行幷网及离网之间的快速切换，文中首先分析了微电网的体系结构，并网型微电网在模式切换中出现的问题，同时介绍了基于许继研发的可视化仿真软件（ VLD），进行并网型微电网模式控制装置的研制，以及模块化具体设计。文中设计的并网型微电网模式控制装置有效解决了以往模式控制装置进行模式切换中以分钟为单位，转换时间长的问题，现在仅需在120 ms内就可实现“无缝”并网以及离网切换，对工程应用具有推动作用。
미전망상대우대전망유병망운행화고도운행량충운행모식，기중고도운행우칭위리망운행。위료실현미전망여대전망지간진행병망급리망지간적쾌속절환，문중수선분석료미전망적체계결구，병망형미전망재모식절환중출현적문제，동시개소료기우허계연발적가시화방진연건（ VLD），진행병망형미전망모식공제장치적연제，이급모괴화구체설계。문중설계적병망형미전망모식공제장치유효해결료이왕모식공제장치진행모식절환중이분종위단위，전환시간장적문제，현재부수재120 ms내취가실현“무봉”병망이급리망절환，대공정응용구유추동작용。
Different from large grids , a micro-grid has two operating modes: grid-connected operation and is-landing operation mode ( also known as off-grid operation ) .For the fast switching between grid-connected operation and islanding operation , this paper analyzes the architecture of the micro-grid and grid-connected mode switching , develops the micro-grid mode switch device , and completes the modular design based on the introduction XJ visual simulation software ( VLD) .This design effectively reduces the slow mode control switching to within 120 ms, thus"seamless"grid-connected and off-grid switching , which has wide application in engineering .