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논문 기본 정보

자료유형
학술저널
저자정보
Sujo P. George (National Institute of Technology Calicut) Ashok S (National Institute of Technology Calicut)
저널정보
대한전기학회 Journal of Electrical Engineering & Technology Journal of Electrical Engineering & Technology Vol.13 No.1
발행연도
2018.1
수록면
78 - 88 (11page)

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초록· 키워드

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The liberalization of electricity market and environmental concerns are the major driving forces for the development of Distributed Generation (DG). The mode of grid-connected wind power generation is becoming popular and has matured as a reliable DG technology. The voltage generated by the wind generator is stepped up to the higher voltage by the transformers before connecting to the grid. Operating algorithm of the differential relays for transformer protection used in the wind farms need to be modified to take care of the dynamic nature of fault current caused by the intermittent nature of the wind power. An algorithm for the differential relay is proposed in which dual slope characteristics are adjusted with varying fault level situation according to the wind generator in service as well as with the wind speed. A case study conducted for a typical wind farm shows that the proposed method avoids mal-operation of the differential relay in varying wind power conditions.

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Abstract
1. Introduction
2. Issues with Conventional Differential Relay with Wind Farm
3. Mathematical Model for Modified Differential Relay
4. Algorithm for Modified Differential Relay
5. Case Study
6. Comparison of Modified Dual Slope Algorithm with the Conventional Single Slope and Dual Slope Differential Relay
7. Conclusion
References

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UCI(KEPA) : I410-ECN-0101-2018-560-001704501