Application of Back-to-Back VSC-HVDC in Power Grids Synchronization Parallel Operation

Author

Liu, Jiajun ; Yao, Lixiao ; Wu, Tiansen ; Guo, Ya ; An, Yuan ; He, Changhong

Author_Institution

Electr. Power Syst. Eng. Dept., Xi´´an Univ. of Technol., Xi´´an, China

fYear

2010

fDate

25-27 June 2010

Firstpage

3365

Lastpage

3368

Abstract

This paper introduces present situation of power grid synchronization parallel operation, and analyzes the principle and characteristics of back-to-back commutation mode and VSC-HVDC. Back-to-back VSC-HVDC is proposed in this paper, which can be used in the power grid synchronization parallel operation. Its working principle is that the difference of frequency and voltage can be regulated by means of respectively controlling the direction and magnitude of active power and reactive power which are exchanged between the two power grids. The method can be used to achieve differential-frequency paralleling and same-frequency paralleling operation between two power grids. Under normal operating condition, it can be used for reactive power compensation. Simulation results demonstrate the validity of the method.

Keywords

HVDC power convertors; power grids; reactive power; active power; back-to-back VSC-HVDC; differential-frequency paralleling; power grids; reactive power compensation; same-frequency paralleling operation; synchronization parallel operation; Power conversion; Power grids; Reactive power; Synchronization; Voltage control; VSC-HVDC; back-to-back; differential-frequency paralleling; same-frequency paralleling;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical and Control Engineering (ICECE), 2010 International Conference on

Conference_Location

Wuhan

Print_ISBN

978-1-4244-6880-5

Type

conf

DOI

10.1109/iCECE.2010.821

Filename

5630682