Operation of series and shunt converters with 48-pulse series connected three-level NPC converter for UPFC

Author

Zhao, Tiefu ; Bhattacharya, Subhashish ; Huang, Alex Q.

Author_Institution

Dept. of Electr. & Comput. Eng., North Carolina State Univ., Raleigh, NC

fYear

2008

fDate

10-13 Nov. 2008

Firstpage

3296

Lastpage

3301

Abstract

The 48-pulse series connected 3-level neutral point clamped (NPC) converter approach has been used in unified power flow controller (UPFC) application due to its near sinusoidal voltage quality. This paper investigates the control and operation of series and shunt converters with 48-pulse voltage source converters (VSC) for UPFC application. A novel controller for series converter is designed based on the ldquoangle controlldquo of the 48-pulse voltage source converter. The complete simulation model of shunt and series converters for UPFC application is implemented in Matlab/Simulink. The practical real and reactive power operation boundary of UPFC in a 3-bus power system is specifically investigated. The performance of UPFC connected to the 500-kV grid with the proposed controller is evaluated. The simulation results validate the proposed control scheme under both steady state and dynamic operating conditions.

Keywords

control system synthesis; load flow control; power convertors; power grids; power system control; reactive power; 3-bus power system; Matlab-Simulink; UPFC; angle control scheme; neutral point clamped converter; power grid; reactive power operation; real power operation; series converter control; shunt converter control design; three-level NPC converter; unified power flow controller; voltage 500 kV; voltage source converters; Converters; Load flow; Mathematical model; Power conversion; Power system dynamics; Power system modeling; Power system simulation; Reactive power; Steady-state; Voltage control; 48-pulse converter; Neutral Point Clamped (NPC) converter; Unified Power Flow Controller (UPFC); angle control;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics, 2008. IECON 2008. 34th Annual Conference of IEEE

Conference_Location

Orlando, FL

ISSN

1553-572X

Print_ISBN

978-1-4244-1767-4

Electronic_ISBN

1553-572X

Type

conf

DOI

10.1109/IECON.2008.4758488

Filename

4758488