Next Article in Journal
A Redundancy Mechanism Design for Hall-Based Electronic Current Transformers
Next Article in Special Issue
Electric Field Simulations and Analysis for High Voltage High Power Medium Frequency Transformer
Previous Article in Journal
Wind Energy Potential and Power Law Indexes Assessment for Selected Near-Coastal Sites in Malaysia
Previous Article in Special Issue
A Dynamic Economic Dispatch Model for Uncertain Power Demands in an Interconnected Microgrid
Article Menu
Issue 3 (March) cover image

Export Article

Open AccessArticle
Energies 2017, 10(3), 309; doi:10.3390/en10030309

A Novel High-Frequency Voltage Standing-Wave Ratio-Based Grounding Electrode Line Fault Supervision in Ultra-High Voltage DC Transmission Systems

1
State Grid Sichuan Electric Power Research Institute, Chengdu 610072, China
2
School of Energy Science and Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China
3
Department of Electrical Engineering, Xi’an Jiaotong University, Xi’an 710049, China
*
Author to whom correspondence should be addressed.
Academic Editor: Silvio Simani
Received: 28 December 2016 / Revised: 21 February 2017 / Accepted: 28 February 2017 / Published: 5 March 2017
(This article belongs to the Collection Smart Grid)
View Full-Text   |   Download PDF [4000 KB, uploaded 8 March 2017]   |  

Abstract

In order to improve the fault monitoring performance of grounding electrode lines in ultra-high voltage DC (UHVDC) transmission systems, a novel fault monitoring approach based on the high-frequency voltage standing-wave ratio (VSWR) is proposed in this paper. The VSWR is defined considering a lossless transmission line, and the characteristics of the VSWR under different conditions are analyzed. It is shown that the VSWR equals 1 when the terminal resistance completely matches the characteristic impedance of the line, and when a short circuit fault occurs on the grounding electrode line, the VSWR will be greater than 1. The VSWR will approach positive infinity under metallic earth fault conditions, whereas the VSWR in non-metallic earth faults will be smaller. Based on these analytical results, a fault supervision criterion is formulated. The effectiveness of the proposed VSWR-based fault supervision technique is verified with a typical UHVDC project established in Power Systems Computer Aided Design/Electromagnetic Transients including DC(PSCAD/EMTDC). Simulation results indicate that the proposed strategy can reliably identify the grounding electrode line fault and has strong anti-fault resistance capability. View Full-Text
Keywords: UHVDC transmission system; grounding electrode line; fault supervision; voltage standing-wave ratio; injected current source UHVDC transmission system; grounding electrode line; fault supervision; voltage standing-wave ratio; injected current source
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 alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Teng, Y.; Li, X.; Huang, Q.; Wang, Y.; Jing, S.; Jiang, Z.; Zhen, W. A Novel High-Frequency Voltage Standing-Wave Ratio-Based Grounding Electrode Line Fault Supervision in Ultra-High Voltage DC Transmission Systems. Energies 2017, 10, 309.

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]
Energies EISSN 1996-1073 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top