Available Transfer Capability Evaluation Based on Sensitivity Analysis

According to the definition of Available Transfer Capability by North America Electric Reliability Council (NERC), we know that ATC not only depends on the topology of power network but also on the parameters of components. So a series of adequacy indices are proposed to evaluate ATC. Through thorough analyses on these indices, the sensitivities of components parameters to these adequacy indices are deduced. The impact of components parameters’ small variations on ATC can be reflected by these sensitivities, the importance degree of each component can be embodied. Furthermore, by sensitivity analysis we can effectively identify ATC bottlenecks and get important guide information for operation and planning. The algorithm based on MATLAB 6.5 is developed. The correctness and effectiveness of the proposed sensitivity analysis method are verified using IEEE-RTS79 test system.