Improved dynamic phasor model of HVDC system for subsynchronous oscillation study

Author

Sun, Huiping ; Yang, Xue ; Wang, Xitian ; Sun, Jibo

Author_Institution

Dept. of Electr., Tong Univ., Shanghai, China

fYear

2011

fDate

6-9 July 2011

Firstpage

485

Lastpage

489

Abstract

Dynamic phasors have been introduced to the HVDC model to analyze its dynamic behavior. Dynamic phasor method featured by high accuracy and calculation speed has many advantages, representing the switch state of the valve with switching function and flexibly selecting the proper time-varying Fourier coefficient based on the need of actual analysis. Based on analysis of influence exerted by thyristor dead time and trigger control on the HVDC dynamic phasor model, this paper accordingly improves the dynamic phasor model which successfully interfaces with the electromagnetic transient model through the establishment of PSCAD/EMTDC custom model and is finally proved to be precise by comparison with electro transient model, consequently authenticated to be fit for HVDC SSO.

Keywords

EMTP; HVDC power transmission; electromagnetic oscillations; power system transients; subsynchronous resonance; switching convertors; HVDC system; dynamic phasor model; electromagnetic transient model; subsynchronous oscillation; switching function; thyristor dead time; time-varying Fourier coefficient; trigger control; Analytical models; Delay; HVDC transmission; Heuristic algorithms; Power system dynamics; Rectifiers; Thyristors; Dynamic phasors; HVDC; Power system; SSO;

fLanguage

English

Publisher

ieee

Conference_Titel

Electric Utility Deregulation and Restructuring and Power Technologies (DRPT), 2011 4th International Conference on

Conference_Location

Weihai, Shandong

Print_ISBN

978-1-4577-0364-5

Type

conf

DOI

10.1109/DRPT.2011.5993939

Filename

5993939