Voltage stability improvement of power system using a shunt capacitor

Masahiro Furukakoi, Tomonobu Senjyu,Toshihisa Funabashi



Due to the deregulation of the electricity market, increasing demand approaching transmission capacity, and the endeavor for economic benefits, the power system is recently placed under more severe operating conditions than ever before. Therefore, voltage stability analysis is a major concern in power system planning and operation. This paper proposes a method to improve the voltage stability of the power system by using the active and reactive power information of the transmission line in accordance with the voltage stability index. Installing a bank of shunt capacitors at the load substation in order to inject the proper amount of reactive power can improve the voltage stability of the system as shown by simulations.

Published in: Renewable Energy & Power Quality Journal (RE&PQJ, Nº. 14)
Pages:339-344 Date of Publication: 2016/5/20
ISSN: 2172-038X Date of Current Version:2016/05/04
REF:311-16 Issue Date: May 2016
DOI:10.24084/repqj14.311 Publisher: EA4EPQ

Authors and affiliations

Masahiro Furukakoi(1), Tomonobu Senjyu(1), Toshihisa Funabashi( 2)
1. Department of Electrical and Electronics Engineering University of the Ryukyus. Japan
2. Institute of Materials and Systems for Sustainability (IMaSS) NAGOYA UNIVERSITY. Japan

Key words

Voltage collapse, voltage stability index, shunt capacitor, smart grid, IEEE 5 Bus system


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