Voltage Stability Analysis of Large Scale PV Plant Reactive Power Control Methods

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ÇAVDAR B., AKYAZI Ö., ŞAHİN E., NUROĞLU F. M.

SAKARYA UNIVERSITY JOURNAL OF SCIENCE, vol.25, no.4, pp.914-925, 2021 (Peer-Reviewed Journal) identifier

  • Publication Type: Article / Article
  • Volume: 25 Issue: 4
  • Publication Date: 2021
  • Doi Number: 10.16984/saufenbilder.808343
  • Journal Name: SAKARYA UNIVERSITY JOURNAL OF SCIENCE
  • Journal Indexes: Academic Search Premier, Business Source Elite, Business Source Premier, TR DİZİN (ULAKBİM)
  • Page Numbers: pp.914-925
  • Karadeniz Technical University Affiliated: Yes

Abstract

The increasing integration of photovoltaic (PV) plants into conventional power systems has led

to the need to examine the effects of these plants on the system dynamics. By considering this

increasing integration rate, in this study, a well-known IEEE-9 bus power system is modified

by adding a PV plant in DigSilent Powerfactory environment. Three different transient cases

are tested by using PV plant control units designed by Western Electricity Coordinating Council

(WECC). The effect of the load and line transient disconnections and 3-phase short circuit fault

on modified power system are investigated as case-I, case-II, and case-III, respectively. In all

cases, two sub-cases are considered according to the location as a distance factor. As a result,

comparison of PV different control options (DCO) is done in terms of voltage stability for these

3 cases and the obtained results are discussed in detail.