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电网技术  2012 

系统惯性时间常数对互联电网暂态稳定水平的影响

, PP. 102-107

Keywords: 惯性时间常数,暂态稳定水平,功角稳定,电网交流互联,三相短路

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Abstract:

由于区域电网的互联以及大容量机组的不断投入,整个电力系统的惯性时间常数将会发生巨大的变化,继而会影响电网的暂态稳定性,严重地影响了电力系统的安全稳定运行。本文进一步研究了区域交流电网联网后,由于系统惯性时间常数变化而引起的2网内部重要输电断面暂态稳定水平变化的一般规律,重点分析了系统在不同运行方式下,系统惯性时间常数对电网暂态稳定水平的不同影响。在理论分析的基础上,结合相关算例进行了仿真研究,仿真结果验证了分析结果的正确性。

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