Protection of Future Electricity Systems II

Dear Colleagues,

The generation of electrical energy has been undergoing a series of dramatic changes in recent years, motivated mainly by the commitment to reduce CO₂ emissions, but also to deliver high quality, reliable and safe electricity to everyone. We are seeing a massive deployment of renewables, an increasing share of DC networks at transmission and distribution levels, and at the same time, a continuous reduction of conventional synchronous generation. This poses a wide range of technical and economic challenges to the existing power systems, including the provision of dependable and secure protection at all voltage levels.

With the second edition of this Special Issue on power system protection, we extend our invitation to all potential researchers and practitioners working on protective solutions which can best support rapidly evolving power systems. Recent technological advances in many disciplines have created new opportunities for developing solutions which were not possible (or very costly) in the past. The development and increased availability of reliable high-bandwidth communications, high-efficiency real-time processing systems, new signal processing algorithms, and the development of advanced measurement and sensing technologies are but a few examples of possible areas of innovation from which the protective systems could benefit.

Both conventional and unconventional interdisciplinary solutions are welcome, including adaptive and/or active methods. We also encourage contributions covering the systematic, realistic assessment of the existing protection system performance, particularly works evaluating how protection response can be affected by the current and anticipated changes in electricity generation, transmission, and distribution. The influencing factors could include the increased penetration of inverter-connected renewables, the changing nature of loads, new electric grid architectures, the impact of EV chargers, and others. Such studies can either be based on real experience in the field or achieved through detailed simulation.

The Issue is open, but not limited, to contributions in the following focus areas:

• Protection in microgrids and islanded systems;
• Islanding detection;
• Protection of HVDC grids;
• Protection of other DC systems, including hybrid AC/DC;
• Protection of conventional and hybrid feeders, including superconducting transmission;
• System integrity and wide area protection, including load shedding;
• Protection performance assessment and testing, including hardware-in-the-loop (HIL) regime;
• Impact of converter control on protection performance and associated solutions;
• Adaptive protection including architectural structures and requirements;
• Utilization of artificial intelligence for protection and fault management strategies;
• Fault level estimation, including real-time fault level monitoring;
• Fault location.

Dr. Adam Dyśko
Dr. Dimitrios Tzelepis
Dr. Qiteng Hong
Guest Editors

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