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논문 기본 정보

자료유형
학술저널
저자정보
Ji-Soo Kim (Sungkyunkwan University) Gyu-Jung Cho (Sungkyunkwan University) Jin-Sol Song (Sungkyunkwan University) Jae-Yun Shin (Sungkyunkwan University) Dong-Hyun Kim (Sungkyunkwan University) Chul-Hwan Kim (Sungkyunkwan University)
저널정보
대한전기학회 Journal of Electrical Engineering & Technology Journal of Electrical Engineering & Technology Vol.13 No.6
발행연도
2018.11
수록면
2,196 - 2,202 (7page)

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초록· 키워드

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The conventional power system allowed only downstream power flow. Therefore, even if a fault occurs, only the forward current flow is considered. However, with the interest in distributed generation (DG), DGs such as Photovoltaic (PV), Wind Turbine (WT) are being connected to a power system. DGs have many advantages, but they also have disadvantage such as generation of reverse flow. Reverse flow can severely disrupt existing protection systems that only consider downstream power flow. The major problems that may arise from reverse power flow are blinding protection and sympathetic tripping. In order to solve such problems, the methods of installing a directional relay or a fault current limiter is proposed. However, this method is inconceivable because of the economics shortage. Therefore, in this paper, a distance relay installed in existing power system is used to solve the protection problem. Modeling of distance relay has been carried out using ElectroMagnetic Transients Program (EMTP), and it has been verified through simulations that the above problems can be solved by a distance relay.

목차

Abstract
1. Introduction
2. Principle of Distance Relay Operation
3. Blinding Protection and Sympathetic Tripping
4. Proposed Method using the Distance Relay
5. Simulation Conditions and Results
6. Conclusion
References

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UCI(KEPA) : I410-ECN-0101-2018-560-003535500