Factors in excitation systems of large central station steam plants

REALIZING that the excitation system is an important factor in successful operation of a large turbo-generator plant, careful attention should be given to the design of a most practical scheme. Underlying principles like simplicity, measured reliability, limited flexibility should not be lost sight of. Probabilities, rather than all possibilities should be carefully weighed and provisions made to meet only the former, rather than introduce a complication of safeguards just as apt to cause trouble.