期刊名称：International Journal of Innovative Research in Science, Engineering and Technology
印刷版ISSN：2347-6710
电子版ISSN：2319-8753
出版年度：2015
卷号：4
期号：3
页码：1755
DOI：10.15680/IJIRSET.2015.0403106
出版社：S&S Publications
摘要：Several systems are considered for the National Grid of Sudan show strong signs of voltage instability orvoltage collapse. It is proposed in this work to investigate the proximity of power systems to voltage instability withspecial reference to the National Grid. This work describes real life application in detection of proximity to voltagecollapse by using L-index method. The research challenge was found out an appropriate method for detection voltagecollapse in an effective manner. This work reflects that through case study conducted in National Grid of Sudan. Thework is started with L-index method or technique. The L-indices for a given load condition are computed for all loadbuses and the maximum of L-indices gives the proximity of the system to voltage collapse. This work reports ananalytic synthesis of real experience acquired to solve problems concerning with detection voltage collapse in Nationalgrid. Our methods provided several results. The validity of results was discussed with the known IEEE 14-bus system,IEEE 30-bus system, in addition to other methods. In this paper after detection of proximity to voltage collapse acompensation method of mitigating the voltage collapse by supplying the reactive power at load buses is discussed andcompares the results with and without compensation.
关键词：L-index method; voltage collapse; National Grid of Sudan; Voltage stability
