Control Strategy against Undesirable Zone 3 Relay Operation in Voltage Instability

  • Lee Byong-Jun (School of Electronic and Information Engineering, Kunsan National University) ;
  • Song Hwa-Chang (Advanced Power System Research Center (APSRC), Korea University)
  • Published : 2005.06.01

Abstract

This paper presents a framework for determining control strategies against unwanted tripping actions during relay operation that plays a very important role in cascading events leading to voltage collapse. The framework includes an algorithm for quick identification of possible zone 3 relay operation during voltage instability. Furthermore, it comes up with the control strategy of load shedding at the selected location with active power and relay margin criteria. In addition, Quasi Steady-State (QSS) simulation is employed to obtain time-related information that is valuable in the determination of control strategy. As a case study, an example applying the framework is shown with the modified New England 39-bus system.

Keywords

References

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