Abstract:
At present, electricity is an essential factor in the living of human life. Without it, the human activities cannot be gone smoothly. From the growth of economics and social, the planning of sufficient generation and transmission of electricity is necessary to be carefully considered. The interconnected power system is one of the solutions in increasing generation reserve and reliability of power system. They can help support electrical energy reserve to each other. However, there is an important question that how much the electrical power that could be transferred between systems without security problem. From this point, North American Reliability Council, NERC, proposed a definition of Available Transfer Capability or ATC. According to NERC’s definition, ATC is defined as the transfer capability remaining in the physical transmission network that can be transferred between sending and receiving areas without any security problems. The sending or receiving area can be a group, pair of buses or between power systems. However, ATC depends on several factors. The reserved margins both for uncertainty and system reliability are of the important factors. This thesis proposes the method to evaluate these margins. They can be divided into two parts, Transmission Reliability Margin (TRM) and Capacity Benefit Margin (CBM). To evaluate these margins, Monte Carlo’s simulation, risk analysis concept, generation reliability evaluation, as well as Total Transfer Capability (TTC) calculation are conducted. The proposed method was tested with 118-bus test system. Satisfactory results were obtained.