Abstract
With the development of distributed networks, the remote controllability of the distributed energy objects and the vulnerability of user-side information security protection measures make distributed energy objects extremely vulnerable to malicious control by attackers. Hence, the large-scale loads may produce abnormal operation performance, such as load casting/dropping synchronously or frequent and synchronous casting and dropping, and hence, it can threaten the security and stable operation of the distribution networks. First, we analyze the security threats faced by industrial controllable load, civil controllable load, and the gains and losses of attacks on the distribution networks. Considering the factors of cyber attacks, we propose a control model and cyber attack model in active distribution networks (ADNs). And, three types of attacks that the target suffered are defined on the basis of “on” and “off” modes for control. Then, the controllable load was maliciously controlled as the research object, and a suitable scenario is selected. The impact of malicious control of the controllable load on the power supply reliability and power quality of the distribution networks are simulated and analyzed, and risk consequences for different types of attacks are provided.
Highlights
With the development of power grid, distributed generation (DG) provided to the distribution networks and suppling the power for surrounding users is an inevitable trend [1, 2]
Electric vehicle charging and discharging stations and the terminals of controllable industrial load may be physically touched by users [6]. erefore, the vulnerability or deficiency of security measures on the user side may make distributed energy objects easier to be controlled by the attackers, which affects the security and stable operation of the distribution networks
If the DG is abnormally started or stopped due to malicious intrusion, the large-scale controllable load (CL) are synchronously casted/dropped, there is frequent and synchronous casting/dropping caused by malicious controlling, or the distributed energy storage (DES) has abnormal behavior because of cyber attacks, which will break the balance between the electricity supply and demand in the distribution networks
Summary
With the development of distributed networks, the remote controllability of the distributed energy objects and the vulnerability of user-side information security protection measures make distributed energy objects extremely vulnerable to malicious control by attackers. The large-scale loads may produce abnormal operation performance, such as load casting/dropping synchronously or frequent and synchronous casting and dropping, and it can threaten the security and stable operation of the distribution networks. We analyze the security threats faced by industrial controllable load, civil controllable load, and the gains and losses of attacks on the distribution networks. E impact of malicious control of the controllable load on the power supply reliability and power quality of the distribution networks are simulated and analyzed, and risk consequences for different types of attacks are provided Three types of attacks that the target suffered are defined on the basis of “on” and “off” modes for control. en, the controllable load was maliciously controlled as the research object, and a suitable scenario is selected. e impact of malicious control of the controllable load on the power supply reliability and power quality of the distribution networks are simulated and analyzed, and risk consequences for different types of attacks are provided
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