A Fast Voltage Collapse Detection and Prevention Based on Wide Area Monitoring and Control

Document Type : Research paper

Authors

Department of Electrical Engineering, Lorestan University, Khorramabad, Iran

Abstract

Voltage stability is one of the most important factors in maintaining reliable operation of power systems. When a disturbance occurs in the power system, it usually causes instabilities and sometimes leads to voltage collapse (VC). To avoid such problems, a novel approach called Vector Analysis (VA) is proposed that exploits a new instability detection index to provide wide area voltage stability for the power systems. The presented index is calculated based on measuring the active and reactive powers that flow through the bus which is connected to the generator bus. Moreover, when the proposed VA approach predicts VC, through disconnecting weak lines and based on network graph, zoning is carried out in the power system. After zoning, damaged and undamaged zones will be differentiated and damaged zones requires load shedding (LS) which is accomplished using ANFIS-TSK (AN-T) intelligent method. The presented approach is applied to the IEEE-39 bus test system. The obtained simulation results demonstrate acceptable performance of the presented approach compared with other suggested methods in terms of speed and accuracy.

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References

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Journal of Operation and Automation in Power Engineering
Volume 8, Issue 3
December 2020
Pages 209-219

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History

  • Receive Date: 29 April 2019
  • Revise Date: 18 November 2019
  • Accept Date: 10 December 2019

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