An Analysis of Delayed Voltage Recovery Phenomenon according to the Characteristics of Motor Load in Korean Power System

모터부하 특성에 따른 국내 전력계통의 전압 지연 회복 현상 분석

  • Received : 2016.07.29
  • Accepted : 2016.08.16
  • Published : 2016.09.01


FIDVR(Fault Induced Delayed Voltage Recovery) is a phenomenon that recovery of the system voltage level delays after the fault. Cause of FIDVR phenomenon is motor load characteristic about voltage and reactive power. In low voltage condition, the motor go to stall state that consume large amount of reactive power. As a result, the voltage recovery problem is that of repeated occurrences of sustained low voltage following faults on the system. In this paper, analysis the characteristics of the motor load. And using the korean power system actual data, perform a case studies to voltage delay recovery phenomenon alleviation method. Change of each parameters by analyzing the effect on system and selecting an influence parameter. In addition, dynamic characteristic analysis of the resulting difference in the proportion by the motor load in power systems, considering the effect on the voltage stability.


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