Instability of PLL-Synchronized Converter-Based Generators in Low Short-Circuit Systems and the Limitations of Positive Sequence Modeling

Wenzong Wang, Garng Morton Huang, Prashant Kansal, Larry E. Anderson, Robert J. Orkeefe, Deepak Ramasubramanian, Parag Mitra, Evangelos Farantatos

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

Abstract

The penetration of renewable energy resources, such as wind and solar, is continuously growing in power system grids and their interconnection in low short-circuit (LSC) systems (aka weak grids) is becoming more frequent. Converter interfaced resources have controls and dynamics that differ from traditional synchronous generators and require sufficient modeling for potential instabilities to be analyzed and prevented both in planning and operations environment. In this work, instability scenarios related to converter controls of wind turbine generators (WTGs) connected to LSC systems are analyzed, and the limitations of using positive sequence models in these scenarios are demonstrated. In addition, the influence of various converter control parameters on the WTG instability is investigated. The analysis is performed on a portion of the American Electric Power (AEP) network with several hypothetical renewable energy resources.

Original languageEnglish
Title of host publication2018 North American Power Symposium, NAPS 2018
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781538671382
DOIs
Publication statusPublished - 2 Jan 2019
Event2018 North American Power Symposium, NAPS 2018 - Fargo, United States
Duration: 9 Sep 201811 Sep 2018

Publication series

Name2018 North American Power Symposium, NAPS 2018

Conference

Conference2018 North American Power Symposium, NAPS 2018
CountryUnited States
CityFargo
Period9/9/1811/9/18

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Keywords

  • Converter based generator
  • Low short-circuit system
  • Phase locked loop
  • Stability

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering
  • Control and Optimization

Cite this

Wang, W., Huang, G. M., Kansal, P., Anderson, L. E., Orkeefe, R. J., Ramasubramanian, D., Mitra, P., & Farantatos, E. (2019). Instability of PLL-Synchronized Converter-Based Generators in Low Short-Circuit Systems and the Limitations of Positive Sequence Modeling. In 2018 North American Power Symposium, NAPS 2018 [8600590] (2018 North American Power Symposium, NAPS 2018). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/NAPS.2018.8600590