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논문 기본 정보

자료유형
학술저널
저자정보
C. Subramani (Velammal Engineering College) Subhransu Sekhar Dash (SRM University) M. Jagdeeshkumar (Velammal Engineering College) M. Arun Bhaskar (Velammal Engineering College)
저널정보
대한전기학회 Journal of Electrical Engineering & Technology Journal of Electrical Engineering & Technology Vol.4 No.4
발행연도
2009.12
수록면
438 - 442 (5page)

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Voltage instability is a phenomenon that could occur in power systems due to stressed conditions. The result would be an occurrence of voltage collapse leading to total blackout of the system. Therefore, voltage collapse prediction is an important part of power system planning and operation, and can help ensure that voltage collapse due to voltage instability is avoided. Line outages in power systems may also cause voltage collapse, thereby implying the contingency in the system. Contingency problems caused by line outages have been identified as one of the main causes of voltage instability in power systems. This paper presents a new technique for contingency ranking based on voltage stability conditions in power systems. A new line stability index was formulated and used to identify the critical line outages and sensitive lines in the system. Line outage contingency ranking was performed on several loading conditions in order to identify the effect of an increase in loading to critical line outages. Correlation studies on the results obtained from contingency ranking and voltage stability analysis were also conducted, and it was found that line outages in weak lines would cause voltage instability conditions in a system. Subsequently, using the results from the contingency ranking, weak areas in the system can be identified. The proposed contingency ranking technique was tested on the IEEE reliability test system.

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Abstract
1. Introduction
2. INDEX FORMULATION AND METHODOLOGY
3. VSA AND LOCA
4. RESULTS AND DISCUSSION
5. CONCLUSION
References

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