In response to increased energy demand, researchers, system operators, engineers, and utility owners are working hard to fully utilise power system installed facilities, which is providing security problems for power systems. As a result, to address the challenge of power system security, this study employs risk-based security assessment. The low voltage security of power systems was assessed using a linearized risk-based method that used a quick decoupled load flow algorithm. The strategy is founded on the notion of risk, which takes into account both the likelihood and severity of the contingency. Risk is decomposable, and it can be decomposed by perverting the network's dangerous conditions. To assess the effects of the contingency, the likelihood of voltage distribution, the probability of contingency, and the severity function are required. For estimating the risk indices of three simulated contingencies at varied rates of occurrence, the suggested technique was demonstrated on an actual power system, the simulation model of the Nigerian 41 bus 330kV transmission grid network. The estimated risk indices reveal that risk indices rise as the rate of occurrence rises. This suggests that events with a high frequency but low impact have a higher or equal risk than those with a great impact but occur infrequently. As a result, system operators, technicians, and engineers must promptly identify, evaluate, and suggest solutions in order to mitigate network effects and improve service delivery.
Author(s) Details
U. N. Asibeluo
Department of Electrical Engineering, Nnamdi Azikiwe University, Awka, Anambra State, Nigeria.
T. C. Madueme
Department of Electrical Engineering, University of Nigeria, Nsukka, Enugu State, Nigeria.
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