Earticle

초록

영어

This paper presents simulation and small-scale experimental tests of a fault current controller. Smart fault controller as proposed and proven conceptually in our previous work is promising technology for the smart power grid where distributed and even stochastic generation sources are prevalent and grid operations are more dynamic. Existing protection schemes simply limiting the fault current to the pre-determined set values may not show best performance and even lead to coordination failures, potentially leading to catastrophic failure. Thus, this paper designs fault current controller with a full bridge thyristor rectifier, embedding a superconducting coil for which the controller is electrically invisible during normal operation because the loss due to the coil is near-zero. When a fault occurs and the resulting current through the superconducting coil exceeds a certain value set intelligently based on the current operating condition of the grid, the magnitude of the fault current is controlled to this desired value by adjusting the firing angles of thyristors such that the overall system integrity is successfully maintained. Detailed time-domain simulations are performed and lab-scale testing circuits are built to demonstrate the desired functionality and efficacy of the proposed fault current controller.

목차

Abstract
 1. INTRODUCTION
 2. OPERATING PRINCIPLE AND STRUCTURE OF FCC
 3. EXPERIMENTAL SETUP
  3.1. The thyristor control circuit
  3.2. Superconducting Coil
 4. EXPERIMENTS AND ANALYSIS
 5. CONCLUSION
 ACKNOWLEDGMENT
 REFERENCES

저자

• Jae Young Jang [ School of Electrical and Electronic Engineering, Yonsei University, Korea ]
• Woo Seung Lee [ School of Electrical and Electronic Engineering, Yonsei University, Korea ]
• Jiho Lee [ School of Electrical and Electronic Engineering, Yonsei University, Korea ]
• Young Jin Hwang [ School of Electrical and Electronic Engineering, Yonsei University, Korea ]
• Hyun Chul Jo [ School of Electrical and Electronic Engineering, Yonsei University, Korea ]
• Min Cheol Ahn [ Department of Electrical Engineering, Kunsan National University, Gunsan ]
• Kyeon Hur [ School of Electrical and Electronic Engineering, Yonsei University, Korea ]
• Tae Kuk Ko [ School of Electrical and Electronic Engineering, Yonsei University, Korea ] Corresponding Author

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  한국초전도·저온논문지 (구 한국초전도저온공학회논문지) [Progress in Superconductivity and Cryogenics]

• 간기

  계간

• pISSN

  1229-3008

• eISSN

  2287-6251

• 수록기간

  1999~2026

• 등재여부

  KCI 등재,SCOPUS

• 십진분류

  KDC 427 DDC 537