Setting-less protection: Feasibility study

A. P.Sakis Meliopoulos, George J. Cokkinides, Zhenyu Tan, Sungyun Choi, Yonghee Lee, Paul Myrda

Research output: Chapter in Book/Report/Conference proceedingConference contribution

40 Citations (Scopus)


A new protection scheme is proposed that does not require settings or the settings are simple and the need to coordinate with other protective devices has been removed. The approach can be viewed as a generalization of differential protection and it is enabled with dynamic state estimation. Specifically, the proposed protection scheme is based on continuously monitoring terminal voltages and currents of the component and other possible quantities such as tap setting, temperature, etc. as appropriate for the component under protection. The monitored data are utilized in a dynamic state estimation that continuously provides the dynamic state of the component by fitting the data to the basic model equations of the device under protection. The dynamic state is then used to determine the health of the component. Tripping or no tripping is decided on the basis of the health of the component. The basic approach, the analytics and the requirements for successful implementation of this concept are presented. Numerical experiments are presented to validate the method as well as an example comparison with conventional protection. Finally an evaluation of feasibility is provided based on present day microprocessor capabilities and it is concluded that present day microprocessors do have the computational power required by the proposed approach.

Original languageEnglish
Title of host publicationProceedings of the 46th Annual Hawaii International Conference on System Sciences, HICSS 2013
Number of pages9
Publication statusPublished - 2013
Externally publishedYes
Event46th Annual Hawaii International Conference on System Sciences, HICSS 2013 - Wailea, Maui, HI, United States
Duration: 2013 Jan 72013 Jan 10

Publication series

NameProceedings of the Annual Hawaii International Conference on System Sciences
ISSN (Print)1530-1605


Conference46th Annual Hawaii International Conference on System Sciences, HICSS 2013
Country/TerritoryUnited States
CityWailea, Maui, HI


  • Component protection
  • Dynamic state estimation
  • External and internal faults
  • Nonlinear dynamic systems

ASJC Scopus subject areas

  • General Engineering


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