• 조명전기설비학회논문지
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• 제12권1호
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• pp.20-25
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• 1998

본 논문은 전력설비의 신속한 상정사고 선택을 위한 앨고리즘을 제시한다. 이 방법은 DC법에 의한 선로와 모선사이의 감도계수인 GSDF(Generation Shigt Distribution Factor)를 이용하여 계산되는 선로개방분배계수 (LODF : Line Outage Distribution Factor)를 사용하여 정상상태에서의 선로조류로부터 상정사고시의 선로조류를 계산하였다. 상정사고 선택을 신속히 하기 위하여 정상상태에서 용량대비 선로조류가 35〔%〕(154〔kV〕에서는 60〔%〕)이상의 선로만을 대상으로 하였다. 본 논문에서 제시한 앨고리즘 및 프로그램의 효율성을 입증하기 위하여 6모선 11선로 모델계통을 선정하여 적용하였다.

• 전기학회논문지
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• 제66권2호
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• pp.255-260
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• 2017

This paper studies on effective rescheduling of generation when the single line contingency has occurred in power system with wind farm. The suggested method is formulated to minimize the rescheduling cost of conventional and wind generators to alleviate congestion. The generator rescheduling method has been used with incorporation of wind farms in the power system. Since all sensitivity is different about congestion line, Line Outage Distribution Factor(LODF) and Generator Sensitivity Factor(GSF) is used to alleviate congestion. The formulation have been proccessed using linear programming(LP) optimization techniques to alleviate transmission congestion. The effectiveness of the proposed rescheduling of generation method has been analyzed on revised IEEE 30-bus systems.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1996년도 하계학술대회 논문집 B
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• pp.760-763
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• 1996

This paper presents an algorithm for the contingency ranking in a power system. The method utilizes line outage distribution factors(LODF) which are established from DC load flow solutions. The LODF are formulated using changes in network power generations to simulate the outaged line from the network. To abtain better ranking. one can take a line loading of 60% over into account in the computation of PI. The proposed algorithm has been validated in tests on a 6-bus test system.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1995년도 하계학술대회 논문집 B
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• pp.588-590
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• 1995

This paper presents a new algorithm for the countermeasure to alleviate the line overloads in a power system. This method utilizes network sensitivity factors which are establised from DC load flow solutions. The line outage distribution factors(LODF) are formulated using changes in network power generations to simulate the outaged line from the network. The proposed algorithm has been validated in tests on a 6-bus test system.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2008년도 제39회 하계학술대회
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• pp.44-45
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• 2008

The zone 3 elements of distance relays play an important role during the propagation of cascaded events. The most challenging problem to mitigate catastrophic failures is to distinguish between actual faults with line flow transfer from other disconnected lines. This paper presents an adaptive protective relaying scheme based on Line Outage Distribution Factor(LODF) and Generation Shift Factor(GSF) to prevent zone 3 tripping during the cascaded events. Internet based secure peer to peer communication is recommended as a communication method of proposed scheme. Several communication issues such as reliability, speed and cyber security are discussed. In order to establish the feasibility of the proposed scheme, computer simulations for a six bus system has been performed.