ATC calculation with static security constraints using benders decomposition

Abstract

In power market environment, available transfer capability (ATC) is an important indicator of the further usable amount of transmission capacity for commercial trading. Benders decomposition method, based on Optimal Power Flow (OFF), is proposed to partition the static security constrained ATC problem into a base-case master problem and a series of subproblems relevant to various contingencies. The master problem is used to handle the base-case power flow constraints and Benders cut constraint from the corresponding subproblem, and each subproblem is used to generate the static security constraints from the corresponding contingency. The mathematic model is formulated and the two improved solution schemes are presented. Computer testing on the 4-bus system and IEEE 30-bus system shows clearly the effectiveness of the proposed method and solution schemes.