NOTATION

Abstract—This paper shows a midterm transmission planning methodology for liberalized electricity markets. This methodology evaluates expansions and reinforcements using a transmission ad-equacy linear programming model. This type of modeling solves efficiently, taking into account power exchange deviations, 1 network preventive adequacy level, and nonsupply demand. Statis-tical results are obtained sampling power exchange scenarios and computing transmission investment sensitivities. After each sample of generation and consumption bidding and generator and circuit failures, means, ranges, and confidence intervals of transmission investment sensitivities are updated. These sensitivities are com-puted using dual variables and reduced costs of the transmission adequacy model. This statistical sensitivity information and addi-tional information are evaluated jointly using multicriteria deci-sion theory. An extended Garver’s six-bus and the Spanish system cases are analyzed. Index Terms—Investment sensitivities, liberalized market, mul-ticriteria decision theory, 1 preventive criterion, transmission planning