Maximal load demand allocation

The authors address the problem of determining the maximum amount of active and reactive unserved load demand that can be connected to each bus in an electric power system without violation of its operating constraints. This maximal load demand allocation problem, which is associated with each electrical island of a power system operating in a restorative state, is formulated as a mixed nonlinear-integer programming problem. A decoupling procedure partitions the overall allocation problem into a maximal active load demand allocation subproblem and a minimal reactive load demand deallocation subproblem. The approach has been implemented in the form of a computer program and tested using power system models of up to 118 buses. Details of the implementation procedure and some illustrative test results are presented