대한전기학회:학술대회논문집 (Proceedings of the KIEE Conference)
- 대한전기학회 2003년도 추계학술대회 논문집 전력기술부문
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- Pages.28-30
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- 2003
PLF(Probabilistic Load Flow)를 이용한 모선 전압 안전도 평가
Security Assessment for Bus Voltages Using Probabilistic Load Flow
- Lee, Seung-Hyuk (Hanyang University) ;
- Jung, Chang-Ho (Hanyang University) ;
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Kim, Jin-O
(Hanyang University) ;
- Kim, Tae-Kyun (KEPRI) ;
- Choo, Jin-Bu (KEPRI)
- 발행 : 2003.11.13
초록
Probabilistic Load Flow(PLF) solution based on the method of moments is used for security assessment of bus voltages in power systems. Bus voltages, line currents, line admittances, generated real and reactive power, and bus loads are treated as complex random variables. These complex random variables are known in terms of probability density functions(PDF). Also, expressions for the convolutions of complex random variables in terms of moments and cumulants have been derived. Proposed PLF solution using the method of moments is fast, because the process of convolution of various complex random variables is performed in moment and cumulant domain. Therefore, the method is applied to security assessment of power systems in this paper. Finally, system operator also can be used information of security assessment to improve reliability of power systems.
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