Optimal Location Modeling of Electricity Operations Center Considering the Electrical System Resiliency
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Abstract
Improving electrical system resiliency can promote national energy security by enhancing energy efficiency and flexibility according to the country’s vision in the National Strategy (2018–2037). This research establishes a P-Centering Problem model to analyze optimal locations for electricity operations centers, whose operation is to restore electrical resiliency. In terms of system resiliency, the constraints of the System Average Interruption Duration Index, which is the key performance index of Provincial Electricity Authority, are considered. The problem of analyzing optimal location under certain contraints is achieved by Mixed-Integer Programming. Solution finding algorithm is exact by branch-and-bound method. Through the GAMS language compiler, numerical analysis provides an optimal solution to the Provincial Electricity Authority Ongkharak Branch in Nakhon Nayok province. Numerical results demonstrate that the model can provide an optimal solution of number and location of Electricity Operations Center. This can enhance the System Average Interruption Duration Index efficiency to Level 5, which is the best service level of the Provincial Electricity Authority. This improvement can reduce the time of power outage by 12.97 minutes per customer per year, equivalent to 14.46 percent efficiency increment. The result of this work can be applied to the location problem of the Electricity Operations Center of electrical agencies. The model formulation estimates the number, location of service center, and service assignment to improve the resiliency of the electrical system under the service’s constraints.
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