Protection of Future Electricity Systems

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. We have seen a massive deployment of renewables, an increasing share of DC electricity transmission and distribution, and simultaneous continuing 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 this Special Issue, we would like to draw special attention to those protective solutions and ideas which can best support future power systems, and thus facilitate the continuing decarbonization of electrical energy generation. Rapid 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.

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

This 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 convention al and hybrid feeders, including superconducting transmission;
• System integrity and wide area protection, including load shedding;
• Protection performance and testing;
• Fault level estimation, including real-time fault level monitoring;
• Fault location.

Dr. Adam Dyśko
Dr. Dimitrios Tzelepis
Guest Editors

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