The Transactions of The Korean Institute of Electrical Engineers (전기학회논문지)

The Korean Institute of Electrical Engineers (대한전기학회)
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A Study on Protective Coordination Setting of Positive Offset Mho Loss of Field Relay

Positive Offset Mho 계자 상실 계전기 보호 협조 정정에 관한 연구

  • Kim, Kwnag-Hyun (Dept. of Information and Communication Engineering, Sungkyunkwan University) ;
  • Park, Ji-Kyung (Dept. of Information and Communication Engineering, Sungkyunkwan University) ;
  • Kim, Jun-Hyeok (Dept. of Information and Communication Engineering, Sungkyunkwan University) ;
  • Kim, Doo-Ung (Dept. of Information and Communication Engineering, Sungkyunkwan University) ;
  • Kang, Sung-Bum (Dept. of Information and Communication Engineering, Sungkyunkwan University) ;
  • Kim, Chul-Hwan (Dept. of Information and Communication Engineering, Sungkyunkwan University) ;
  • Lyu, Young-Sik (Korea Power eXchange) ;
  • Yang, Jeong-Jae (Korea Power eXchange) ;
  • Ko, Yun-Tae (Corning)
  • Received : 2016.04.18
  • Accepted : 2016.07.02
  • Published : 2016.08.01
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Abstract

It is important to clear the fault and prevent resulting in damage to power system. Although the frequency of generator internal fault is relatively low, it can lead to incalculable damage to power system as well as generator. Especially, loss of field on generator can cause the generator to lose synchronism for a short time if it is not removed promptly. Therefore, it is needed to conduct research on loss of field relay for detecting or clearing the loss of field. However, the setting of the relay may vary in generator operator or engineer, and the relay is not coordinated well with other elements associated with loss of field. In this paper, we address specifically the coordination of positive offset mho loss of field relay which is one of the protection schemes for loss of field. Computer simulations are performed by using ElectroMagnetic Transients Program-Restructured Version (EMTP-RV) based on actual data.

Keywords

References

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