Advances in Relay Protection Solutions for Modern Power Distribution Networks

Dear Colleagues,

The importance of robust relay protection in power distribution networks has grown significantly with the increasing complexity and dynamic nature of modern power grids. As we integrate more renewable energy sources and advanced technologies, the task of ensuring reliable and efficient power delivery becomes ever more challenging. Distribution system operators (DSOs) must ensure a delicate balance between maintaining system stability and accommodating the diverse interests of stakeholders, including independent power producers (IPPs) and end consumers, who demand an uninterrupted power supply with high-quality parameters.

In this dynamic environment, the role of relay protection is critical. Effective relay protection schemes safeguard the distribution network from faults and anomalies, ensuring minimal disruption and damage. The integration of advanced control and monitoring systems further enhances the ability of DSOs to respond swiftly and accurately to faults, thus maintaining the integrity and performance of the power system.

This Special Issue aims to explore the optimization of relay protection strategies used in power distribution networks, focusing on the integration of control and monitoring technologies to improve overall system reliability and efficiency. By addressing these challenges, we aim to provide valuable insights that can help balance the diverse interests of all stakeholders in this evolving sector.

Potential topics include, but are not limited to, the following:

• The coordination of overcurrent protection in distribution networks;
• The integration of digital relays and smart grid technologies;
• Fault detection and isolation techniques;
• The impact of distributed generation on relay protection;
• Challenges in the protection of high-renewable penetration grids;
• Using fault current limiters in MV and LV grids;
• The combined usage of overcurrent and over/under voltage relays for optimization problems;
• Transformer protection;
• The influence of MV network grounding on earth fault currents and touch potential;
• The optimization of LV installation protection;
• The optimization of distribution grid restoration;
• The effect of fast-charging EV stations on relay sensitivity;
• Innovations in protection relay hardware and software;
• Advanced relay protection schemes;
• Adaptive protection systems;
• Case studies on successful relay protection implementations;
• The role of artificial intelligence and machine learning in protection systems;
• The implementation of real-time monitoring and control systems;
• Future trends in relay protection for smart grids.

This Special Issue invites contributions that address these topics, providing innovative solutions and insights into the optimization of relay protection in modern distribution networks. By solving these challenges, we aim to enhance the safety, reliability, and efficiency of power system operation in the face of evolving grid complexities.

Dr. Michele Rojnić
Dr. Rene Prenc
Dr. Benjamín González-Díaz
Dr. Miloš Beković
Guest Editors

Manuscript Submission Information

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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.

• distribution network operation
• relay protection
• smart grid
• optimization techniques
• renewable energy sources
• fault detection
• adaptive protection
• AI applications