Protection of inverter-based distributed generation with series dynamic braking resistor: A variable duty control approach

M. Shafiul Alam, Md Ismail Hossain, Md Alamgir Hossain, Md Shamimul Haque Choudhory, Muhammad Athar Uddin

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

15 Scopus citations

Abstract

Fault current level in inverter based distributed generation (IBDG) integrated grid system increases manifold due to high level of IBDG penetration. Nevertheless, for having less detrimental effect of fault in the system fault current must be kept within specified limit as per new grid code. This paper proposes series dynamic braking resistor (SDBR) based protection scheme for IBDG with variable duty control strategy. SDBR is connected with the AC side of the IDBG to insert variable resistance during contingencies depending on the level of fault current. Current at the point of common coupling is employed to detect system disturbances. Feedback control strategy is developed for the control of DC link voltage such that the net power exchange with the DC capacitor is zero. Direct axis inner current control strategy is adopted to transfer IBDG power to grid. Symmetrical three phase to ground and unsymmetrical double line to ground faults are applied in the system to show the efficacy the proposed variable duty based SDBR control technique. The proposed variable duty based SDBR control scheme have been found as an effective solution to limit the fault current for IBDG system as evident from the simulation results.

Original languageEnglish
Title of host publicationICECE 2018 - 10th International Conference on Electrical and Computer Engineering
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages253-256
Number of pages4
ISBN (Electronic)9781538674826
DOIs
StatePublished - 2 Jul 2018

Publication series

NameICECE 2018 - 10th International Conference on Electrical and Computer Engineering

Bibliographical note

Publisher Copyright:
© 2018 IEEE.

Keywords

  • Fault current limiter
  • Inverter based distributed generator
  • Series dynamic braking resistor
  • Variable duty control
  • Voltage source inverter

ASJC Scopus subject areas

  • Artificial Intelligence
  • Computer Science Applications
  • Hardware and Architecture
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Instrumentation

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