Reactive power moment method for optimal compensation on radial distribution systems

Based on the radial structure of distribution systems, this paper proposes the concept of the reactive power moment: the linear and quadric moment of reactive power. The model of the reactive power moment is established for optimal compensation on distribution systems accordingly. The quadric moment of reactive power is used to determine the location of the capacitors. The linear moment of reactive power is used to determine the type and size of the capacitors placed on the system. This proposed method is tested on several experimental systems and test results show that this method is fast, computationally efficient, and eminently suitable for radial distribution systems