Research on the current limiting scheme of the transformer-isolated multilevel H-bridges DSTATCOM

Author

Wang, Tengfei ; Zhu, Yongqiang

Author_Institution

Sch. of Electr. & Electron. Eng., North China Electr. Power Univ., Beijing, China

Volume

2

fYear

2011

fDate

8-9 Sept. 2011

Firstpage

225

Lastpage

228

Abstract

A current limiting scheme of the transformer-isolated multilevel H-bridges DSTATCOM is proposed. The novel scheme, based on the none zero seuence optimal algorithm, is able to compensate the negative sequence load current preferentially when the DSTATCOM capacity is not enough to compensate the full load current. Based on the current Limiting scheme, a holistic compensating scheme of DSTATCOM is proposed to make it adapt fluctuant load current. Finally a 2.5 Mvar DSTATCOM module is presented and the simulation results in PSCAD verify the validity and accuracy of the proposed current limiting scheme and the holistic compensating scheme.

Keywords

power transformers; static VAr compensators; DSTATCOM capacity; PSCAD simulation; current-limiting scheme; fluctuant load current; holistic compensating scheme; negative-sequence load current; none-zero sequence optimal algorithm; transformer-isolated multilevel H-bridge DSTATCOM; Accuracy; Automatic voltage control; Educational institutions; Limiting; Load modeling; PSCAD; DSTATCOM; current limiting scheme; negative sequence current preferred compensation; separating transformer;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Engineering and Automation Conference (PEAM), 2011 IEEE

Conference_Location

Wuhan

Print_ISBN

978-1-4244-9691-4

Type

conf

DOI

10.1109/PEAM.2011.6134943

Filename

6134943