Multiconverter Unified Power-Quality Conditioning System: MC-UPQC

Author

Mohammadi, Hamid Reza ; Varjani, Ali Yazdian ; Mokhtari, Hossein

Author_Institution

Electr. Eng. Dept., Tarbiat Modares Univ., Tehran

Volume

24

Issue

3

fYear

2009

fDate

7/1/2009 12:00:00 AM

Firstpage

1679

Lastpage

1686

Abstract

This paper presents a new unified power-quality conditioning system (MC-UPQC), capable of simultaneous compensation for voltage and current in multibus/multifeeder systems. In this configuration, one shunt voltage-source converter (shunt VSC) and two or more series VSCs exist. The system can be applied to adjacent feeders to compensate for supply-voltage and load current imperfections on the main feeder and full compensation of supply-voltage imperfections on the other feeders. In the proposed configuration, all converters are connected back to back on the DC side and share a common DC-link capacitor. Therefore, power can be transferred from one feeder to adjacent feeders to compensate for sag/swell and interruption. The performance of the MC-UPQC as well as the adopted control algorithm is illustrated by simulation. The results obtained in PSCAD/EMTDC on a two-bus/two-feeder system show the effectiveness of the proposed configuration.

Keywords

distribution networks; power capacitors; power convertors; power supply quality; DC-link capacitor; MC-UPQC; PSCAD-EMTDC simulation; adopted control algorithm; multibus-multifeeder system; multiconverter; shunt voltage-source converter; unified power-quality conditioning system; Active filters; Capacitors; Converters; Load flow; Power conversion; Power quality; Power transmission lines; Substations; Voltage control; Voltage fluctuations; PSCAD/EMTDC; Power quality (PQ); unified power-quality conditioner (UPQC); voltage-source converter (VSC);

fLanguage

English

Journal_Title

Power Delivery, IEEE Transactions on

Publisher

ieee

ISSN

0885-8977

Type

jour

DOI

10.1109/TPWRD.2009.2016822

Filename

5109861