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This paper proposed a unified framework to verify the effect of dispatching interval of an Optimal Power Flow (OPF) program to the operational cost under a normal operation of an Vertically Integrated Electric Supply Industry (VIESI). A system load profile is assumed to be constant during a 5-minute interval. For any demand changed, it is balanced by adjusting generated power provided from load following...
The enhance benefit use of reactive power additional supplied by synchronous based distributed generators to reduce real power loss in distribution system is studied in this paper. Objective is to compare the amount of loss reduced between the constant power factor (CPF) and the optimal reactive power dispatch (ORPD) schemes. The former is a traditional scheme of controlling reactive power with a...
In this paper, three performance indices of a transmission line i.e., line security margin, line security index and line severity index are proposed to be used for transmission system planning. The objective is to create systematic indices to assist the planners to identify vulnerable power flow paths of a system which may lead to voltage instability problem from proliferated demand. The calculation...
The context of transmission loss allocation raised and debated under restructuring of electric supply industry. It is normally defined as a procedure of allocating or charging all participants for their transmission real power loss. In a traditional theory of electricity spot pricing contribution of transmission loss to inject/withdrawal power at each bus is aggregated in a nodal price as an incremental...
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