Experimental Research on Dynamic Voltage Sag Compensation Using 2G HTS SMES

Author

Zhu, Jiahui ; Cheng, Qiang ; Yang, Bin ; Yuan, Weijia ; Coombs, T.A. ; Qiu, Ming

Author_Institution

China Electr. Power Res. Inst., Beijing, China

Volume

21

Issue

3

fYear

2011

fDate

6/1/2011 12:00:00 AM

Firstpage

2126

Lastpage

2130

Abstract

A high temperature superconducting magnetic energy storage system (HT-SMES) is constructed using YBCO coated conductor and is integrated with a cryogenic system using sub-cooled LN2. A closed loop control algorithm, based on the digital signal processor (DSP) TMS320F2812, is proposed using the 2G HT-SMES to compensate dynamic voltage sag in power systems. A dynamic simulation experiment for compensation of instantaneous voltage sag is achieved. The experiment circuit is built using a signal conditioning circuit, a DSP controlling circuit, a power conversion circuit and a SMES unit. Analysis of the voltage waveforms before and after compensation validates that this SMES system is able to compensate instantaneous voltage sag.

Keywords

compensation; conductors (electric); cryogenics; high-temperature superconductors; power supply quality; superconducting magnet energy storage; superconducting tapes; waveform analysis; 2G HTS SMES; DSP controlling circuit; TMS320F2812; YBCO coated conductor; closed loop control algorithm; cryogenic system; digital signal processor; dynamic voltage sag compensation; high-temperature superconducting; power conversion circuit; power systems; signal conditioning circuit; superconducting magnetic energy storage system; voltage waveform analysis; Coils; Converters; Power system dynamics; Superconducting magnetic energy storage; Voltage control; Voltage fluctuations; Experiment analysis; YBCO; high temperature superconducting magnetic energy storage system; voltage sag dynamic compensation;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2010.2091710

Filename

5661874