Consistency of damping torque and energy flow dissipation coefficient in oscillation stability analysis

H. Cai, S. Q. Bu, Z. Y. Peng, C. Wu, W. M. Xi, W. C. Qi

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

Electric torque analysis (ETA) is a widely-used technique to study the damping torque of the oscillation stability in power systems. Energy dissipation method (EDM) as an alternative method could estimate the damping of the oscillation stability based on the dissipation coefficient of energy flowing in the respective branches computed by the data from the wide area measurement system (WAMS). In this paper, the consistency of the energy flow dissipation coefficient estimated by EDM and damping torque obtained theoretically from ETA is rigorously proven, in both the single machine infinite bus (SMIB) power system and the multi-machine power system, regardless of the model complexity of the generator. Finally, the theoretical consistency is validated by time domain simulations in two typical study cases. Clear physical explanations of the derived tracking functions can be identified for the monitoring and analysis of various oscillations associated with power electronic converter- connected systems in further research.

Original languageEnglish
Title of host publication2018 International Conference on Power System Technology, POWERCON 2018 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages2284-2290
Number of pages7
ISBN (Electronic)9781538664612
DOIs
Publication statusPublished - 3 Jan 2019
Event2018 International Conference on Power System Technology, POWERCON 2018 - Guangzhou, China
Duration: 6 Nov 20189 Nov 2018

Publication series

Name2018 International Conference on Power System Technology, POWERCON 2018 - Proceedings

Conference

Conference2018 International Conference on Power System Technology, POWERCON 2018
Country/TerritoryChina
CityGuangzhou
Period6/11/189/11/18

Keywords

  • damping torque
  • electric torque analysis (ETA)
  • energy dissipation method (EDM)
  • wide area measurement system (WAMS)

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering
  • Control and Optimization

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