Analysis of flicker mitigation in a utility distribution network

Author

Blazic, Bostjan ; Papic, Igor

Author_Institution

Fac. of Electr. Eng., Ljubljana Univ., Slovenia

Volume

2

fYear

2003

fDate

22-24 Sept. 2003

Firstpage

292

Abstract

A regional utility company in Slovenia reported excessive flicker levels that are caused mainly by a 4 MVA arc furnace installed in the area. This paper evaluates two possible solutions for flicker mitigation: increasing the short-circuit power at the point of common coupling; and installation of a D-StatCom system. Based on the field measurements, a detailed network model was constructed in the PSCAD/EMTDC program to verify the proposed solutions. The arc furnace and an IEC flicker-meter for flicker level evaluations were also modeled. A comprising solution to flicker mitigation was analyzed. The utility could reduce the flicker level from 4 to around 1.9 by replacing its HV/MV transformer. Further reduction of flicker (the permissible level is set to 1) should be done by the customer with the application of a D-StatCom compensation system. The structure and control of the device are proposed in this paper.

Keywords

arc furnaces; power supply quality; power system simulation; 4 MVA; D-StatCom system; HV/MV transformer; IEC flicker-meter; PSCAD/EMTDC program; arc furnace; distribution static compensator; flicker level evaluations; flicker mitigation; short-circuit power; utility distribution network; Area measurement; Automatic voltage control; Frequency; Furnaces; IEC standards; Intelligent networks; Power quality; Power system modeling; Substations; Voltage fluctuations;

fLanguage

English

Publisher

ieee

Conference_Titel

EUROCON 2003. Computer as a Tool. The IEEE Region 8

Print_ISBN

0-7803-7763-X

Type

conf

DOI

10.1109/EURCON.2003.1248202

Filename

1248202