Online Voltage Instability Detection of Distribution Systems for Smart-Grid Applications

Abdel-Fatah Ali ； Ahmad Eid ； Mamdouh Abdel-Akher

《International Journal of Automation and Power Engineering》 1卷2期 (2012/05) Pp. 67-72

並列摘要

This paper presents a developed voltage stability index for identifying the most sensitive buses to the voltage collapse in radial distribution networks. The developed index is based on the transferred active and reactive power of a distribution line. The developed index utilizes the continuous power-flow solution calculated using real time power-flow software in distribution management systems. The developed stability index is tested and validated using commercial continuation load-flow program. Then, the index is used to detect the voltage instability in real-time scenarios using a typical 24-hour daily load curves data of various demands with a 33-node radial feeder. The impact of distributed generation is also studied with varied daily environmental conditions including wind speed. The results show that the developed stability index provides fast assessment of the voltage instability in real time. The developed method fits with smart grid applications since the stability index can be easily integrated with the continuous power-flow solver utilized in distribution management systems.

並列關鍵字

Voltage Stability ； Stability Index ； Distribution Systems ； Wind Energy ； Smart-Grid