A linear model of voltage limited transmission interface constraints

A linear model of voltage limited transmission interface constraints is developed. The solution is a trade-off among local generation, transmission expansion, and reactive support equipment. With specified reliability criteria, network sensitivity parameters are calculated for a model system. The sensitivity of the optimal choice to economic factors is illustrated. This model illustrates in a simple case the choices facing planners, clarifies the practical conditions that dictate the optimum in particular cases, and helps to motivate the final choices selected.<>