Sparsity-Oriented Compensation Methods for Modified Network Solutions

The paper gives a unified derivation and analysis of compensation methods for the efficient solution of network problems involving matrix modifications. These methods have a very wide range of practical application, and many of the better ones appear tobe little known in the power field. General and specific cases are dealt with, including the removal, addition and splitting of tiodes. The choice between themany compensation versions is seen to be highly problem dependent, and although space precludes the treatment of specific applications, guidelines are offered for the comparison of versions with each other and with matrix refactorization.