A Cascaded D-STATCOM Integrated with a Distribution Transformer for Medium-voltage Reactive Power Compensation

Ertao Lei; Xianggen Yin; Yu Chen; Jinmu Lai

A Cascaded D-STATCOM Integrated with a Distribution Transformer for Medium-voltage Reactive Power Compensation

Vol. 17, No. 2, pp. 522-532, Mar. 2017

10.6113/JPE.2019.17.2.522

Cascaded multilevel converter

Distribution static compensator (D-STATCOM)

Distribution transformer

Reactive power compensation

Winding taps

PDF

Abstract

This paper presents a novel integrated structure for a cascaded distribution static compensator (D-STATCOM) and distribution transformer for medium-voltage reactive power compensation. The cascaded multilevel converter is connected to a system via a group of special designed taps on the primary windings of the Dyn11 connection distribution transformer. The three-phase winding taps are symmetrically arranged and the connection point voltage can be decreased to half of the line-to-line voltage at most. Thus, the voltage stress for the D-STATCOM is reduced and a compromise between the voltage rating and the current rating can be achieved. The spare capacity of the distribution transformer can also be fully used. The working mechanism is explained in detail and a modified control strategy is proposed for reactive power compensation. Finally, both simulation and scaled-down prototype experimental results are provided to verify the feasibility and effectiveness of the proposed connection structure and control strategy.

Statistics

Show / Hide Statistics

Cumulative Counts from September 30th, 2019
Multiple requests among the same browser session are counted as one view. If you mouse over a chart, the values of data points will be shown.

Cite this article

[IEEE Style]

E. Lei, X. Yin, Y. Chen, J. Lai, "A Cascaded D-STATCOM Integrated with a Distribution Transformer for Medium-voltage Reactive Power Compensation," Journal of Power Electronics, vol. 17, no. 2, pp. 522-532, 2017. DOI: 10.6113/JPE.2019.17.2.522.

[ACM Style]

Ertao Lei, Xianggen Yin, Yu Chen, and Jinmu Lai. 2017. A Cascaded D-STATCOM Integrated with a Distribution Transformer for Medium-voltage Reactive Power Compensation. Journal of Power Electronics, 17, 2, (2017), 522-532. DOI: 10.6113/JPE.2019.17.2.522.