Electrical Features of Eddystone Station

The high efficiency of supercritical pressure turbine generators of this size is a compelling reason to attain maximum availability factor, and this dictates a high degree of reliability of the electrical features. On the other hand, cost must be held to a minimum. It is believed that the optimum balance between these two basic requirements has been achieved by stressing simplicity. The unit system is used both for the main and for the auxiliary equipment. The auxiliaries are supplied by a simple radial system which is arranged to eliminate costly ties and promote proper operation. Double cooling of the main transformers provides emergency capacity at minimum cost. The use of welded aluminum supporting structures in the 132-kv substation reduces the cost of maintenance. The relay system is designed to assure system stability. Railroad rights of way and railroad structures are used extensively for transmission lines.