Attack and defence methods in cyber‐physical power system
The power system has evolved from a traditional single energy transmission and conversion system to a complex cyber-physical power system (CPPS) with tightly coupled energy and information flows as a result of the advancements in digitalization and intelligence. The cyber-physical power system uses powerful information processing, sophisticated measurement, and widely available sensing technologies to achieve the controllability and observability of the power system. However, CPPS is more open to attack than any previous single structured system due to the vast number of intelligent electronic device accesses and frequent information interactions. Via the cyber subsystem, viruses and intrusions can target the CPPS, which can then fatally damage the physical system that supplies energy. Malicious attacks against CPPS have been happening recently as a result of the aforementioned issues, and they have drawn a lot of scholarly attention. This paper specifically addresses this issue by outlining the three-level security defense strategies for CPPS in detail, analyzing the attack modes from the cyber and physical subsystems, and profiling the structure of CPPS and potential threats. Lastly, the potential for future technological advancement in CPPS security research is clearly discussed. This will offer technical assistance in the construction of durable, safe, and dependable energy systems.