Allocation of reactive power support based on a voltage source model

This paper presents a method for the allocation of reactive power support based on the electric circuit theory. By assuming that a generator is a voltage source and applying the superposition theorem, it is possible to identify the reactive power contributions made by each source in order to meet the load demand of each load bus. Models based on voltage sources have the property of reproducing the local nature of the reactive power/voltage and lead to coherent and easily interpretable allocations. In addition, the expression for the allocation of costs avoids the presence of cross-subsidies. The method was validated with the use of two test-systems and the results were compared with those of another method.