Dear Colleagues,

The Guest Editor is inviting submissions to a Special Issue of Energies on the subject area of “Voltage Unbalance Analysis in Power Distribution Networks”. Balanced operation of voltages within allowed power quality standards is important for the safe operation of electrical equipment and assets. Renewable generators and increasing electrification might cause unbalance, if no special attention is given to disadvantageous conditions. With the advent of smart meters, sensors and IoT devices, unbalanced network states can be detected, and symmetry can be re-established by means of connection planning measures, phase-sequencing or operational interventions.

This Special Issue will deal with emerging issues of unbalanced voltage in energy systems, due to changing consumption behaviour, renewable generation and increasing electrification, like transportation and heat pumps. Topics of interest for publication include, but are not limited to:

• Monitoring and detection of unbalanced network states
• Impact on equipment, e.g. motors, transformers and power electronics
• Observations in single and three-phase networks
• Impact and limitation on hosting capacity
• Effects of neutral point displacement, neutral line faults and overheating
• Emerging controls of power electronics and filters
• Advanced controls in unbalanced distribution systems
• Transposed network constructions and dynamic operations
• Transformer construction and configuration for balancing (delta-wye, delta-zigzag)
• Regional and international approaches and grid codes
• Impact on customers and operational expenditure (Opex)
• Artificial intelligence (AI) and machine learning (ML) methods for phase balancing
• Problems related to high impedance and interuptions in grounding and neutral wires

Matthias Stifter
Guest Editor

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. Energies 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 2600 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.

• Unbalanced distribution systems
• Three phase/four wire power system analysis
• Control methods
• Machine learning
• Artificial intelligence
• Power quality
• IoT