Reliable diagnosis of grid-connected systems

An efficient diagnosis algorithm for grid-connected systems is presented and evaluated The algorithm provides correct, but possibly incomplete, diagnosis if the number faults occurring in the system does not exceed a bound T_ ? returned by the algorithm itself along with diagnosis. The diagnosis may be validated by probing a very small number of units. The performance of the algorithm when applied to grids of different sizes and degrees was evaluated by means of simulation. The results of the simulation experiments displayed a trade-off between the performance of the algarithm and the degree, hence the cost, of the interconnection structure.