Identifying power flow control infeasibilities in large scale power system models

This paper describes a methodology to identify potential conflicts among power flow control devices that may slow down or impair convergence. The proposed methodology is based on the eigenvalue analysis of the sparse Jacobian matrix associated with the Newton power flow with controls. Practically identical results are obtained from a smaller control sensitivity matrix. The implementation in a power flow program has been tested using both small and large scale systems. The results presented validate and clearly indicate the effectiveness of the proposed technique.