Stability improvement of a multimachine power system connected with a large-scale hybrid wind-photovoltaic farm using a supercapacitor

Li Wang, Quang Son Vo, Anton V. Prokhorov

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

3 Citations (Scopus)

Abstract

This paper presents the stability improvement of a multimachine power system connected with a large-scale hybrid wind-photovoltaic (PV) farm using an energy-storage unit based on supercapacitor (SC). The operating characteristics of the hybrid wind-PV farm are simulated by an equivalent aggregated 300-MW wind-turbine generator (WTG) based on permanent-magnet synchronous generator and an equivalent aggregated 75-MW PV array. The WTG and the PV array are connected to a common dc link through a voltage-source converter and a dc/dc boost converter, respectively. The power of the common dc link is transferred to the multimachine power system through a voltage-source inverter, step-up transformers, and a connection line. The SC-based energy-storage unit, which is integrated into the common dc link through a bidirectional dc/dc converter, is employed for smoothing out the power fluctuations due to variations of wind speed and/or solar irradiance. A PID supplementary damping controller (PID-SDC) is designed for the bidirectional dc/dc converter of the SC to enhance the damping characteristics of the low-frequency oscillations associated with the studied multimachine power system. The root loci of the studied system are examined under wide ranges of wind speed and solar irradiance. The effectiveness of the proposed SC joined with the PID-SDC on improving the performance of the studied system under different disturbance conditions is also demonstrated using time-domain simulations.

Original languageEnglish
Title of host publication2017 IEEE/IAS 53rd Industrial and Commercial Power Systems Technical Conference, I and CPS 2017
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781509057245
DOIs
Publication statusPublished - 8 Jun 2017
Event53rd IEEE/IAS Industrial and Commercial Power Systems Technical Conference, I and CPS 2017 - Niagara Falls, Canada
Duration: 6 May 201711 May 2017

Conference

Conference53rd IEEE/IAS Industrial and Commercial Power Systems Technical Conference, I and CPS 2017
CountryCanada
CityNiagara Falls
Period6.5.1711.5.17

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Keywords

  • damping controller
  • eigenvalues
  • hybrid wind-photovoltaic farm
  • multimachine power system
  • permanent-magnet synchronous generator
  • root-loci analysis
  • Stability
  • supercapacitor
  • time-domain simulations

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

Cite this

Wang, L., Vo, Q. S., & Prokhorov, A. V. (2017). Stability improvement of a multimachine power system connected with a large-scale hybrid wind-photovoltaic farm using a supercapacitor. In 2017 IEEE/IAS 53rd Industrial and Commercial Power Systems Technical Conference, I and CPS 2017 [7945117] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ICPS.2017.7945117