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논문 기본 정보

자료유형
학술저널
저자정보
Yoon-Tak Han (Korea Testing Certification) Joon-Seok Oh (KEPCO) Jae-Hun Cha (Chungbuk National University) Jae-Yun An (TripleCores Technology) Seung-Yoon Hyun (KEPCO) Jong-Kwan Lee (KEPCO) In-Yong Seo (KEPCO) Jae-Eon Kim (Chungbuk National University)
저널정보
대한전기학회 Journal of Electrical Engineering & Technology Journal of Electrical Engineering & Technology Vol.12 No.6
발행연도
2017.11
수록면
2,208 - 2,218 (11page)

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초록· 키워드

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To resolve overload in a distribution system, a distribution system operator (DSO) often performs a load transfer using normally open tie points and switches in the distribution line. During this process, the distribution system is momentarily operated in closed-loop operation. A closed-loop current in the distribution system can cause a power failure due to excess breaking current in the circuit breakers and reclosers. Therefore, it is necessary to calculate the closed-loop current exactly. However, if there are a large number of distributed generation (DG) systems in the distribution system, such as energy storage systems (ESS), they might obstruct the closed-loop operation based on bidirectional power flow. For quick and precise operation of a closed-loop system, the ESS has to regulate the power generation while satisfying closed-loop operation in the worst cases. We propose a strategy for balanced power regulation of an ESS. Simulations were carried out using PSCAD/EMTDC, and the results were compared with calculation results.

목차

Abstract
1. Introduction
2. Calculation of the Closed-Loop Current in the Distribution System
3. Consideration of the Closed-Loop Current in a Distribution System with Numerous ESSs
4. Discussion of Countermeasures of Power Regulation in the Distribution System
5. Balanced Power Regulation of the ESS in the distribution System
6. Simulation Results and Analysis
7. Conclusion
References

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