Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)
- 2003.11a
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- Pages.251-254
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- 2003
A Method of Vulnerable Area Selection for Voltage Stability Using the Variation Rate of Reactive Power Margin
무효전력 여유변화를 이용한 전압안정성 취약지역 선정
- Cho, Yoon-Hyun (School of Electrical Engineering, Korea University APSRC) ;
-
Seo, Sang-Soo
(School of Electrical Engineering, Korea University APSRC) ;
- Lee, Byong-Jun (School of Electrical Engineering, Korea University APSRC) ;
- Kim, Tae-Kyun (KEPRI) ;
- Choo, Jin-Boo (KEPRI)
- 조윤현 (고려대학교 전력시스템기술연구센터) ;
-
서상수
(고려대학교 전력시스템기술연구센터) ;
- 이병준 (고려대학교 전력시스템기술연구센터) ;
- 김태균 (한전 전력연구원) ;
- 추진부 (한전 전력연구원)
- Published : 2003.11.13
Abstract
A voltage stability assessment consists of the contingency screening, voltage stability analysis, and counter measures. A widely used index for the voltage stability assessment of power system is the reactive power margin. It shows some factors of voluntariness as following the status of power system and load levels for the target analyzing area. Therefore, it has a demerit that the absolute amounts of reactive power margin is not to be applied by the quantized margin criterion. This paper selects a vulnerable area by assigning the voltage instability for the particular contingency for the selection of vulnerable area in the respect of the investigation of reactive power margin or VQVI as an index of V-Q margin sensitivity in order to overcome the demerit. This will be able to grasp the V-Q margin sensitivity for the target analyzing area by presenting the ratio of power margin between the margin before and after contingency as following the calculation of reactive power margin. The presented method is applied to the voltage stability assessment for the Metropolitan area of 2003 KEPCO summer peak system.
Keywords