The Piecewise Solution of the Impedance Matrix Load Flow

This paper presents a method for solution of the load flow problem which involves tearing a power system into pieces. This permits use of the impedance matrix method on larger systems than was previously feasible. A detailed tearing algorithm is given. Its validity is examined by presentation of test results for a small sample system. The new method retains the same features and convergence characteristics as the original impedance matrix method [1].