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The Hybrid AC-DC Power System Coordinated Control and Operation Technology, 3rd Edition

A special issue of Electronics (ISSN 2079-9292). This special issue belongs to the section "Power Electronics".

Deadline for manuscript submissions: 15 October 2026 | Viewed by 856

Editors

Dr. Baohong Li

E-Mail Website
Guest Editor
College of Electrical Engineering, Sichuan University, Chengdu 610065, China
Interests: power system stability and control; HVDC technology; DC grids; FACTS
Special Issues, Collections and Topics in MDPI journals
Dr. Zheren Zhang

E-Mail Website
Guest Editor
College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China
Interests: HVDC technology; FACTS; renewable power integration
Special Issues, Collections and Topics in MDPI journals
Dr. Qin Jiang

E-Mail Website
Guest Editor
College of Electrical Engineering, Sichuan University, Chengdu 610065, China
Interests: AC–DC hybrid power systems; HVDC; renewable power integration
Special Issues, Collections and Topics in MDPI journals

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 250 words) can be sent to the Editorial Office for assessment.

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-anonymized 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.

Keywords

  • LCC-HVDC
  • VSC-HVDC
  • FACTS
  • power grid stability and control

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Published Papers (2 papers)

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Research

21 pages, 3624 KB  
Article
Dimension-Reduction Method and Influencing Factor Analysis for Unit Clusters in Centralized Renewable Energy Stations Considering Short-Circuit Current Fitting Characteristics
by Jian Li, Bo Zhou, Yunyang Xu, Xinwei Sun, Baohong Li and Hesen Du
Electronics 2026, 15(15), 3367; https://doi.org/10.3390/electronics15153367 - 30 Jul 2026
Viewed by 293
Abstract
The large-scale integration of inverter-interfaced renewable generation has made the steady-state short-circuit current of renewable energy stations increasingly important for setting protections, planning, and fault analysis. Traditional single-unit multiplication methods are computationally efficient but often ignore the effects of internal electrical distance and [...] Read more.
The large-scale integration of inverter-interfaced renewable generation has made the steady-state short-circuit current of renewable energy stations increasingly important for setting protections, planning, and fault analysis. Traditional single-unit multiplication methods are computationally efficient but often ignore the effects of internal electrical distance and active power output dispersion among generation units, which can lead to non-negligible errors at the station level. To address this issue, this paper proposes an improved single-unit multiplication method and a corresponding dimension-reduction framework for centralized renewable energy stations considering short-circuit current fitting characteristics. A unified three-segment positive-sequence current control model is first adopted to represent the low-voltage ride-through behavior of photovoltaic (PV), direct-drive wind turbine, and battery energy storage system (BESS) stations. The upper and lower voltage breakpoints are selected as 0.9 p.u. and 0.2 p.u., respectively, and the linear support coefficient was determined as 1.5 according to Chinese national standards. On this basis, the effects of electrical distance and active power output dispersion on the calculation error of the traditional single-unit multiplication method are analyzed. A grouping criterion based on the average access-point voltage and critical active power is then established, and the resulting two-group equivalent method is used to estimate the total short-circuit current of renewable energy stations. Electromagnetic transient simulations in PSCAD are conducted for PV, direct-drive wind, and BESS stations. The results show that, compared with the traditional single-unit multiplication method, the proposed method more accurately captures the steady-state short-circuit current characteristics under different voltage dips and output-dispersion conditions while retaining high engineering practicality. Full article
(This article belongs to the Special Issue The Hybrid AC-DC Power System Coordinated Control and Operation Technology, 3rd Edition)
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23 pages, 11173 KB  
Article
Heterogeneous DC Transmission System for Offshore Wind Power Based on the Parallel Operation of MMC-HVDC and DRU-HVDC
by Yi Lu, Jiachuan You, Ziming Li, Fengyu Qiu, Wenyao Ye, Zheren Zhang and Zheng Xu
Electronics 2026, 15(14), 2991; https://doi.org/10.3390/electronics15142991 - 8 Jul 2026
Viewed by 312
Abstract
China’s offshore wind power is rapidly developing towards the direction of “deep-water and far-shore, large-scale, and clustered”. Existing offshore wind power transmission schemes based on the MMC are technologically mature but highly expensive. Although transmission schemes based on the DRU possess economic advantages, [...] Read more.
China’s offshore wind power is rapidly developing towards the direction of “deep-water and far-shore, large-scale, and clustered”. Existing offshore wind power transmission schemes based on the MMC are technologically mature but highly expensive. Although transmission schemes based on the DRU possess economic advantages, they lack AC voltage support and reverse power flow capability. To combine the control performance of the MMC and the economic advantages of the DRU, this paper proposes a heterogeneous DC transmission system for offshore wind power based on the parallel operation of MMC-HVDC and DRU-HVDC, which can realize the clustered transmission of deep-water and far-shore wind power. First, the configuration scheme of the system is introduced, and the basic control strategy is proposed. Secondly, the small-signal model of the system is established, and the small-signal stability analysis is conducted. Then, the control strategies for the system under near-zero power conditions and AC/DC faults are proposed, respectively. Finally, the effectiveness of the proposed topology and control strategies is verified through PSCAD electromagnetic transient simulations. Full article
(This article belongs to the Special Issue The Hybrid AC-DC Power System Coordinated Control and Operation Technology, 3rd Edition)
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