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Analysis of Transient Dynamic Response of Two Nearby Micro-Grids under Three Different Control Strategies

机译：三种不同控制策略下两个邻近微电网的瞬态动态响应分析

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The need of reducing CO2 emissions in electricity generation field for solving global warming problems have led to increase the interest in Micro-Grid (MG) especially the one which included renewable sources. MG normally operates in normal interconnected mode and connects with the main grid. When a large disturbance happens in main grid, MG transfer to islanding mode. This paper deals with connecting two nearby Micro-Grids to enhance transient dynamic response of the two MGs after isolated from the main grid. Three cases are investigated. The first case discussed the dynamic response of the two MGs when there is no tie line connection between the two MGs after islanding. Second case, studied the dynamic performance of the two Micro-Grids when there is a private line connects the two MGs after islanding from main grid, while the third case deals with two interconnected MGs (after islanding) and automatic generation control (AGC) applied upon each MG to return the frequency to its nominal value and control the tie line power to be with its scheduled value. Results proofed that when two nearby MGs are connected by private line after islanding from the main grid occurs, dynamic response of the two MGs improved well.
机译：为了解决全球变暖问题，需要减少发电领域的二氧化碳排放量，这引起了人们对微电网（MG）的关注，尤其是其中包括可再生能源的微电网。 MG通常以正常互连模式运行，并与主电网连接。当主电网发生大扰动时，MG转换为孤岛模式。本文涉及连接两个附近的微电网，以增强与主电网隔离后两个MG的瞬态动态响应。调查了三种情况。第一种情况讨论了孤岛后两个MG之间没有联络线连接时两个MG的动态响应。第二种情况，研究了从主电网孤岛出岛后，有一条专用线将两个MG连接起来时，两个微电网的动态性能;第三种情况，涉及两个互连的MG（孤岛之后）并应用了自动发电控制（AGC）每个MG将频率恢复到其标称值，并控制联络线功率使其达到其预定值。结果证明，当从主电网发生孤岛后，附近的两个MG通过专用线连接时，两个MG的动态响应得到了很好的改善。

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