Impact Analysis of DoS Attack at Vulnerable Point with the Exchange of Frequency Containment Reserves Control in MIDC System

The inevitable change of Renewable energy source (RES) penetration led to network instability, especially in isolated systems. Reserve operation balancing arrangements through high voltage direct current (HVDC) systems become a viable option to increase the flexibility of renewable energy deployment and transfer capacity. As a result, HVDC systems become fundamental roles in overall network system stability. However, the reserves balancing arrangements through the HVDC system are vulnerable to information and communication technologies (ICT). Thus, the cyber-physical security of the HVDC system between the two regions needs to be explored. In this article, we discussed the new integration of several HVDC lines which consisted of multiple two-terminal HVDC as known as a multi-infeed HVDC (MIDC) system security. Moreover, an MIDC system could suffer from several potential cyber-attacks, resulting in mismatches of power imbalances for both regions. This paper discusses the impact of novel optimal strategies that the attacker could launch a Denial of Service (DoS) attack to corrupt system stability in the MIDC system.