Abstract
The uncertainty of complex power systems increases the possibility of large blackouts due to the expectations of physical events, such as equipment failures, protection failures, control actions failure, operator error, and cyber-attacks. Cascading outage is a sequence of dependent failures of individual components that successively weaken the power system. A procedure to identify and evaluate the initiating events and perform sequential cascading analysis is needed. In this paper, we propose a new screening methodology based on sequential contingency simulation of cascading outages, including probabilistic analysis and visualization model. Performance of a detail cascading analysis using practical power systems is suggested and discussed. The proposed screening methodology will play a key role in identifying the uncontrolled successive loss of system elements.
Highlights
Future electrical power systems need to secure the stable supply of electric power according to the expansion of distributed power sources based on various technologies, and power systems need to be reliable against natural disasters and unexpected physical or cyber-attacks
Cascading outage is a sequence of dependent failures of individual components that successively weaken the power system
We propose a new screening methodology that is based on sequential contingency simulation of cascading outages, including probabilistic analysis and visualization model
Summary
Future electrical power systems need to secure the stable supply of electric power according to the expansion of distributed power sources based on various technologies, and power systems need to be reliable against natural disasters and unexpected physical or cyber-attacks. An initial event causes an imbalance or violation in the system This can lead to the tripping of facilities such as transmission lines, generators, and transformers, and outages can spread in succession, depending on the operating conditions of the system. Transmission operations are focused on avoiding cascading that could lead to the loss of generation or load due to contingencies events. Energies 2018, 11, 81 focused on the expected future impact of cascading on the potential loss of generation or load due to contingency events. It results in damage to the transmission power transmission which transmits large capacity electric power over a long distance For such a reason, most of the blackouts occurred due to severe weather conditions. We propose a new screening methodology that is based on sequential contingency simulation of cascading outages, including probabilistic analysis and visualization model.
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