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System-Level Vulnerability Analysis for Commutation Failure Mitigation in Multi-infeed HVDC Systems
Minhan Yoon,Gilsoo Jang 대한전기학회 2018 Journal of Electrical Engineering & Technology Vol.13 No.3
This paper deals with commutation failure of the line-commutated converter high voltage direct current (LCC HVDC) system caused by a three phase fault in the ac power system. An analytic calculation method is proposed to estimate the maximum permissible voltage drop at the LCC HVDC station on various operating point and to assess the area of vulnerability for commutation failure (AOV-CF) in the power system based on the residual phase voltage equation. The concept is extended to multi-infeed HVDC power system as the area of severity for simultaneous commutation failure (AOS-CF). In addition, this paper presents the implementation of a shunt compensator applying to the proposed method. An analysis and simulation have been performed with the IEEE 57 bus sample power system and the Jeju island power system in Korea.
System-Level Vulnerability Analysis for Commutation Failure Mitigation in Multi-infeed HVDC Systems
Yoon, Minhan,Jang, Gilsoo The Korean Institute of Electrical Engineers 2018 Journal of Electrical Engineering & Technology Vol.13 No.3
This paper deals with commutation failure of the line-commutated converter high voltage direct current (LCC HVDC) system caused by a three phase fault in the ac power system. An analytic calculation method is proposed to estimate the maximum permissible voltage drop at the LCC HVDC station on various operating point and to assess the area of vulnerability for commutation failure (AOV-CF) in the power system based on the residual phase voltage equation. The concept is extended to multi-infeed HVDC power system as the area of severity for simultaneous commutation failure (AOS-CF). In addition, this paper presents the implementation of a shunt compensator applying to the proposed method. An analysis and simulation have been performed with the IEEE 57 bus sample power system and the Jeju island power system in Korea.
윤민한(Minhan Yoon),박정수(Jungsoo Park),장길수(Gilsoo Jang),문승필(Seungpil Moon),장병훈(Byeonghoon Jang) 대한전기학회 2009 대한전기학회 학술대회 논문집 Vol.2009 No.11
본 논문에서는 한전 4차 전력수급계획이 반영된 중장기 계통을 PSS/e 로 구성, 분석하고 각 모선에서의 사고를 모의해 고장전류를 시뮬레이션 하였다. 시뮬레이션 결과를 통해 한전 계통의 345㎸급 모선 다중 루프화 계획은 차단기 용량이 넘는 고장 전류를 발생시켜 계통에 심각한 문제를 야기할 수 있음을 확인하였다. 그리고 이러한 문제를 해결하기 위해 전압형 BTB HVDC (Back-to-Back High Voltage Direct Current) 시스템을 이용할 수 있음을 보였다.
A Study on Jeju Power System Considering Smart Grid Elements
Shin, Byoung-Yoon,Yoon, Minhan,Suh, Jae-Wan,Jang, Gilsoo,Choi, Hong-Seok,Seo, Young-Jun,Yoon, Dong-Hee 대한전기학회 2013 The Journal of International Council on Electrical Vol.3 No.4
Recently, smart grid has become a crucial issue and many studies have been conducted by various organizations and research institutions. The Korean government also developed smart grid roadmap and has invested for several years. Jeju is the largest island in Korea with high wind penetration and quality. In the coming years, there are plans to reduce thermal units and increase renewable energy such as WT & PV in Jeju Island. Moreover, The Korean government selected Jeju as one of the sites for electric vehicle propagation. In particular, Jeju has been operating the Smart Grid Test-bed for the next-generation energy systems. Therefore, effects of the smart grid elements and their combination could be checked by simulations of these elements implemented onto the Jeju power system. In this paper, the stability of the Jeju power system is investigated considering the various changes owing to the smart grid elements such as renewable sources, EV and HVDC.