Electronics

Journal Browser

► Journal Browser

Special Issue Information

Dear Colleagues,

High-voltage direct current (HVDC) technology plays an increasingly important role in modern power systems. With the number of DC converters integrated into traditional power systems, the stability mechanism of AC–DC hybrid systems becomes complex, and their control strategies face coordination problems.

Specifically, the commutation failures of line-commutated converter (LCC)-based HVDC make power interruptions frequent. Additionally, the oscillations risks brought by the voltage-sourced-converter (VSC) deteriorate the impedance characteristic of the nearby grid, and renewable power grid integration leads to power fluctuations. To solve these new problems, some effective coordination controls are needed, and novel operation strategies should also be proposed.

Based on the challenges faced in modern power systems, we encourage contributions addressing hybrid AC–DC power system coordinated control and operation technology in the broadest sense, including but not limited to the stability and control analysis for LCC-HVDC, stability and control analysis for VSC-HVDC, strategies for coordination between DC converters and AC equipment, coordination strategies between FACTS and AC–DC systems, novel control schemes for renewable power, and protection methods for DC grids and hybrid AC–DC systems.

Dr. Baohong Li
Dr. Zheren Zhang
Dr. Qin Jiang
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Electronics is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Related Special Issue

Published Papers (2 papers)

Download All Papers

Research

17 pages, 7470 KiB

Open AccessArticle

Research on the Quantitative Assessment Method of HVDC Transmission Line Failure Risk during Wildfire Disaster

by Bo Zhou, Xinwei Sun, Yunyang Xu and Wei Wei

Electronics 2024, 13(11), 2119; https://doi.org/10.3390/electronics13112119 - 29 May 2024

Viewed by 230

Abstract

It is increasingly important to effectively predict the failure of HVDC transmission lines caused by wildfire disasters. On the basis of comprehensively considering the distribution of fire points, the characteristics of wildfire propagation, and the failure factors of the transmission line, a method for calculating the probability of failure in HVDC transmission lines during wildfire disasters is proposed to quantify the risk of HVDC transmission line failures caused by wildfire disasters. Using the ArcGIS 10.7. platform, the study examined the quantity of fire points within the buffer zone of each HVDC transmission line from 2001 to 2022. The results indicate significant variations in the number of fire incidents in the buffer zones of various transmission lines. Notably, there has been a noticeable increase in the number of fire incidents along several HVDC transmission lines, including Xizhe, Baihetan-Jiangsu, Baihetan-Zhejiang, and Fufeng, in recent years. Based on the number of fire points in the buffer zone obtained through ArcGIS processing and the proposed failure probability calculation model, six HVDC hydropower transmission channels in the Sichuan Province were analyzed. At the same time, the proposed probability calculation model was simplified, and a corresponding linear evaluation index was introduced. The regression analysis results indicate that the proposed index can effectively assess the failure risk of HVDC transmission lines during wildfire disasters. Full article

(This article belongs to the Special Issue The Hybrid AC-DC Power System Coordinated Control and Operation Technology, Volume II)

► Show Figures

Figure 1

23 pages, 7828 KiB

Open AccessArticle

Fault Ride-Through Method for Interline Power Flow Controller Based on DC Current Limiter

by Jiajun Li, Huabo Shi, Baohong Li, Qin Jiang, Yue Yin, Yingmin Zhang, Tianqi Liu and Chang Nie

Electronics 2024, 13(6), 1038; https://doi.org/10.3390/electronics13061038 - 11 Mar 2024

Viewed by 607

Abstract

The interline power flow controller (IPFC) based on a modular multilevel converter with a half-bridge configuration can control the active and reactive power flows of multiple alternating current (AC) lines. However, it forms a multiterminal system on the direct current (DC) side, which leads to DC faults. To reduce the protection and clearance requirements on the DC side of IPFCs, this paper proposes a hybrid current limiter topology suitable for generating a DC-side fault ride-through scheme. The current limiter employs a low-loss branch in steady-state conditions; when the fault occurs, a commutation capacitor and controllable power electronic devices are used to transfer the fault current to the current-limiting branch. To clarify the operating principles of the current limiter, the working states of each stage and electrical stress of each device are analyzed. Different components with varying limiter parameters are also discussed, and optimal parameters to achieve the best limitation effect are discussed. PSCAD simulations show that the proposed limiter can limit the overcurrent effectively, and DC-side fault clearance can be achieved easily with this fault ride-through strategy. Full article

(This article belongs to the Special Issue The Hybrid AC-DC Power System Coordinated Control and Operation Technology, Volume II)

► Show Figures