Bus Admittance Tearing and the Partial Inverse

Tearing permits larger problems to be solved on a given computer. It also permits solutions to parts of large network problems when the entire solution is unnecessary. This is very important to power organizations who find it increasingly impractical to solve an entire interconnected power pool when only local answers are desired. The partial inverse provides an excellent means for simplifying tearing while yielding useful intermediate results that have physical and electrical meanings. The tearing aspects presented in this paper have not been previously described.