Next Article in Journal
Prediction of the Nonlinearity by Segmentation and Matching Precision of a Hybrid R-I Digital-to-Analog Converter
Next Article in Special Issue
A Virtual Micro-Islanding-Based Control Paradigm for Renewable Microgrids
Previous Article in Journal
Detectors on Edge Nodes against False Data Injection on Transmission Lines of Smart Grid
Previous Article in Special Issue
All SiC Grid-Connected PV Supply with HF Link MPPT Converter: System Design Methodology and Development of a 20 kHz, 25 kVA Prototype
Article Menu
Issue 6 (June) cover image

Export Article

Open AccessArticle

A Control Methodology for Load Sharing System Restoration in Islanded DC Micro Grid with Faulty Communication Links

1
School of Electronics, Information & Electrical Engineering (SEIEE), Smart Grid Research & Development Centre, Shanghai Jiao Tong University, Shanghai 200240, China
2
State Grid Wuxi Power Supply Company, Wuxi 214000, China
*
Author to whom correspondence should be addressed.
Electronics 2018, 7(6), 90; https://doi.org/10.3390/electronics7060090
Received: 4 April 2018 / Revised: 25 May 2018 / Accepted: 31 May 2018 / Published: 4 June 2018
(This article belongs to the Special Issue Applications of Power Electronics)
  |  
PDF [3328 KB, uploaded 4 June 2018]
  |  

Abstract

Communication-based distributed secondary control is extensively used in DC microgrids. Compared to centralized control, it can provide better voltage regulation and load sharing in microgrids. A conventional secondary control technique that converges the system to a common operating point is improved by using the control methodology to detect the communication link failure and stabilize the system operation during communication islanding. Recently, more robust control schemes have been proposed to improve resilience, but communication islanding has not been addressed at the secondary level control for which the system requires additional tertiary control. However, link failure is a possibility in the microgrid, so this paper proposes a control scheme at the secondary level to detect communication islanding. Communication islanding may lead the system to unpredictable behavior, which may cause the system to become unstable and may further lead to a cascading failure. The proposed control scheme sustains the stability and operation of a DC microgrid. Voltage and current observer works in a parallel manner with the proposed secondary control to achieve a correction term for global operating points. The proposed control scheme has been verified through analysis and simulation. View Full-Text
Keywords: DC–DC converters; multi-level control; renewable energy resources control; electrical engineering communications DC–DC converters; multi-level control; renewable energy resources control; electrical engineering communications
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Shahid, M.U.; Khan, M.M.; Hashmi, K.; Habib, S.; Jiang, H.; Tang, H. A Control Methodology for Load Sharing System Restoration in Islanded DC Micro Grid with Faulty Communication Links. Electronics 2018, 7, 90.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Electronics EISSN 2079-9292 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top