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Applied Sciences
Special Issues
Control and Operation of AC and DC Systems
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Control and Operation of AC and DC Systems

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Energy Science and Technology".

Deadline for manuscript submissions: closed (30 November 2019) | Viewed by 3859

Special Issue Editors

Dr. Md Rakibuzzaman Shah

E-Mail Website
Guest Editor
School of Engineering and Technology, Central Queensland University, Perth 6000, Australia
Interests: future power grids (i.e., renewable energy integration and wide-area control); asynchronous grid connection through VSC-HVDC; power system stability and dynamics; application of data mining in power systems; application of control theory in power systems
Assoc. Prof. Dr. Mithulananthan Nadarajah

E-Mail Website
Co-Guest Editor
School of Information Technology and Electrical Engineering, The University of Queensland, St Lucia 4072, Australia
Interests: power system stability and dynamics; stability challenges in renewable energy integration; EV and community energy storage integration
Prof. Dr. Saad Mekhilef

E-Mail Website
Co-Guest Editor
1. School of Science, Computing and Engineering Technologies, Swinburne University of Technology, Hawthorn, VIC 3122, Australia
2. Power Electronics and Renewable Energy Research Laboratory, Department of Electrical Engineering, University of Malaya, Kuala Lumpur 50603, Malaysia
Interests: power conversion techniques; control of power converters; maximum power point tracking (MPPT); renewable energy; energy efficiency; smart grid; microwave and wireless technologies
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

We are inviting submissions of original research and high-quality review articles to a Special Issue of Applied Sciences on the subject of “Control and Operation of Overlay AC and DC Systems”.

Direct current (DC) technology has been rapidly developing in the last two decades, especially new converter technology, control, power and voltage ratings, modularity, and size. The demand for DC technology has increased even more, from the distribution system to high voltage transmission, to the large and remote offshore and onshore grid. At present, it is widely believed that a complex and interconnected DC system could be constructed parallel to an AC system. There are substantial research and developments worldwide on the technologies and challenges regarding such an overlay AC and DC system. This topic needs considerable research and development in many aspects. This Special Issue aims to promote research innovation, practical case studies, and information exchanges related to key issues of such an overlay AC and DC system.

Dr. Md Rakibuzzaman Shah
Assoc. Prof. Dr. Mithulananthan Nadarajah
Prof. Dr. Saad Mekhilef
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. Applied Sciences 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

  • DC system protection and grounding
  • Interaction in mixed AC/DC system
  • MMC DC/DC converter for MV DC application
  • Modelling and simulation of mixed AC/DC system in real time
  • MMC VSC topologies for mixed AC/DC system
  • AC and DC system stability
  • Architecture of the DC system: HV and MV
  • DC microgrid

Published Papers (1 paper)

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Research

17 pages, 1998 KiB  
Article
Minimum Frequency and Voltage Stability Constrained Unit Commitment for AC/DC Transmission Systems
by Ningyu Zhang, Qian Zhou and Haoming Hu
Appl. Sci. 2019, 9(16), 3412; https://doi.org/10.3390/app9163412 - 19 Aug 2019
Cited by 11 | Viewed by 2813
Abstract
An increased use of the high-voltage direct current (HVDC) technologies can have important effects on frequency performance and voltage stability of the receiving-end grid during normal operation as well as during blocking failure. The main reasons are the inherent characteristics of the HVDC [...] Read more.
An increased use of the high-voltage direct current (HVDC) technologies can have important effects on frequency performance and voltage stability of the receiving-end grid during normal operation as well as during blocking failure. The main reasons are the inherent characteristics of the HVDC such as its much larger capacity than thermal plants and lack of voltage supporting ability to the alternating current (AC) grid. These has led to new challenges for AC/direct current (DC) power grid operators in terms of ensuring power system security. To address these challenges, a unit commitment (UC) of the receiving-end in the AC/DC hybrid grid is presented in this paper. In the proposed model, primary frequency modulation constraints are added to provide sufficient capacity for HVDC blocking. Besides, grid security constraint after secondary frequency regulation is also considered because HVDC blocking failure would cause large range power transfer and transmission lines overload. Meanwhile, voltage stability constraints are employed to guarantee enough voltage supporting capacity from thermal plants at the HVDC feed-in area. Based on the characteristics of the model, Benders decomposition and mixed integer programming algorithm are used to get the optimal transmission power of the HVDC and schedule of thermal units. The study is done by considering the IEEE-39 and Jiangsu power grid in eastern China, containing two HVDC transmission projections respectively. The results are also validated by simulation of different HVDC blocking failure scenarios. Full article
(This article belongs to the Special Issue Control and Operation of AC and DC Systems)
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