4.6 Article

Experimental evaluation of negative-sequence voltage compensation in distribution networks by a modular multilevel static synchronous compensator

Journal

ELECTRIC POWER SYSTEMS RESEARCH
Volume 194, Issue -, Pages -

Publisher

ELSEVIER SCIENCE SA
DOI: 10.1016/j.epsr.2020.107020

Keywords

Modular multilevel converter; STATCOM; Unbalanced network voltage; Voltage compensation

Funding

  1. Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior - Brasil (CAPES) [001]
  2. National Council for Scientific and Technological Development (CNPq)
  3. State Funding Agency of Minas Gerais (FAPEMIG)
  4. National Institute for Electric Energy (INERGE)

Ask authors/readers for more resources

This paper introduces a compensation strategy for negative-sequence voltage in a distribution network using a static synchronous compensator based on a modular multilevel converter. Mathematical relations and controllers are used to compensate for unbalanced voltages, with experimental and simulation results demonstrating feasibility and performance.
This paper presents a negative-sequence voltage compensation strategy of a distribution network by using a static synchronous compensator based on modular multilevel converter. Mathematical relations of the static compensator are used to derive small-signal linearised models, in the synchronous reference frame, and to design voltage and current controllers to compensate for unbalanced voltages at the point of common coupling. Moreover, a comprehensive model of the DC bus voltage with a control loop implementation are presented. Furthermore, a notch filter is connected in the feedback path of the DC voltage control loop to eliminate the oscillation in the DC voltage. Digital simulations results, obtained with a 10 MVA / 24 kV MMC-DSTATCOM with 14 submodules per arm, will be used to validate the small-signal linearised mathematical models, and the performance of the designed controllers, during steady-state and faulty grid conditions. In addition experimental results obtained with a small-scale MMC prototype, with 03 submodules per arm, will be presented to demonstrate the feasibility of the compensation strategy proposed here.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.6
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available