A New Load Flow Method to Assess the Static Available Transfer Capability

Available transfer capability or available transmission capacity (ATC) is defined as the excessive power that can be safely and effectively transacted along and beyond transactions previously conducted in a power system. DELF (Differential Equation Load Flow) is a new method of turning a power flow model into a dynamic system. The speed of DELF is improved in the present study through enhancing the inverse matrix approach. Furthermore, a highly effective and precise approach is taken to the evaluation of Static ATC with the (n-1) contingency. This method has been successfully employed in six different systems for multilateral and bilateral transactions. Compared with the outcome of five older techniques, the present findings showed that the new approach is faster and more accurate.