Article
Version 1
Preserved in Portico This version is not peer-reviewed
Optimized Design of Modular Multilevel DC De-Icer for High Voltage Transmission Lines
Version 1
: Received: 17 August 2018 / Approved: 18 August 2018 / Online: 18 August 2018 (08:56:04 CEST)
A peer-reviewed article of this Preprint also exists.
Lu, J.; Huang, Q.; Mao, X.; Tan, Y.; Zhu, S.; Zhu, Y. Optimized Design of Modular Multilevel DC De-Icer for High Voltage Transmission Lines. Electronics 2018, 7, 204. Lu, J.; Huang, Q.; Mao, X.; Tan, Y.; Zhu, S.; Zhu, Y. Optimized Design of Modular Multilevel DC De-Icer for High Voltage Transmission Lines. Electronics 2018, 7, 204.
Abstract
Ice covering on overhead transmission lines would cause damage to transmission system and long-term power outage. Among various de-icing devices, modular multilevel converter (MMC) based DC de-icer (MMC-DDI) is recognized as a promising solution due to its excellent technical performance. Its principle feasibility has been well studied, but few literature discuss its economy or hardware optimization, thus the designed MMC-DDI for high voltage transmission lines is usually too large and too expensive for engineering applications. To fill this gap, this paper presents a quantitative analysis on the converter characteristics of MMC-DDI, and calculates the minimal converter rating and its influencing factors. It reals that, for a given de-icing requirement, the converter rating varies greatly with its AC-side voltage. Then an optimization configuration is proposed to reduce the converter rating and improve its economy. The proposed configuration is verified in a MMC-DDI for a 500kV transmission line as a case study. The result shows, in the case of outputting same de-icing characteristics, the optimized converter rating is reduced from 151 MVA to 68 MVA, and total cost of MMC-DDI is reduced by 48%. This analysis and conclusion are conductive to the optimized design of multilevel DC de-icer, then to its engineering application.
Keywords
converter; ice-melting; modular multilevel converter (MMC); optimization design; transmission line; static var generator (SVG)
Subject
Engineering, Electrical and Electronic Engineering
Copyright: 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.
Comments (0)
We encourage comments and feedback from a broad range of readers. See criteria for comments and our Diversity statement.
Leave a public commentSend a private comment to the author(s)
* All users must log in before leaving a comment