5kV급 MV-LVDC 배전망의 보호협조 연구를 위한 실계통 모델링
Actual System Modeling for Protection Cooperation Study of 5kV MV-LVDC Distribution Network
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Recently, the need for MVDC distribution systems has been rapidly increasing all over the world due to the introduction of renewable energy sources, the increase of DC loads, and consumers' high-quality and high-reliability power demands. Empirical research is being conducted to apply to the MVDC distribution network using existing AC devices and lines. However, in case of using existing AC devices, expensive facilities such as converters and tracks may not be stably protected if the accident happens. For that reason, analysis of the accident characteristics for the stable operation of the MVDC distribution network is required. Therefore, in this paper, using PSCAD/EMTDC, a power system analysis program, a protection cooperation system was modeled targeting a 5kV class MV-LVDC distribution network which was built in Naju, Jeollanam-do and is under trial operation. In the future, we plan to conduct research to examine the validity of protection cooperation through accident analysis of 5kV class DC power distribution networks based on the relevant modeling.
Abstract
Recently, the need for MVDC distribution systems has been rapidly increasing all over the world due to the introduction of renewable energy sources, the increase of DC loads, and consumers' high-quality and high-reliability power demands. Empirical research is being conducted to apply to the MVDC distribution network using existing AC devices and lines. However, in case of using existing AC devices, expensive facilities such as converters and tracks may not be stably protected if the accident happens. For that reason, analysis of the accident characteristics for the stable operation of the MVDC distribution network is required. Therefore, in this paper, using PSCAD/EMTDC, a power system analysis program, a protection cooperation system was modeled targeting a 5kV class MV-LVDC distribution network which was built in Naju, Jeollanam-do and is under trial operation. In the future, we plan to conduct research to examine the validity of protection cooperation through accident analysis of 5kV class DC power distribution networks based on the relevant modeling.
참고문헌 (9)
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