Heuristic method for transmission network expansion planning with security constraints and uncertainty in load specifications

This paper presents a simple and efficient heuristic method for transmission network expansion planning (TNEP), which can take care of uncertainties in load specifications and also the formidable security constraints. The proposed heuristic method is based on a DC power flow based compensation approach to simulate single/double line modifications arising out of a candidate line addition and an outage of other line. Boundary DC power flow is used to ascertain the worst power flows on the lines. Results for two sample system confirms the potential of the proposed algorithms.