Measuring equipment and techniques used for high-voltage impulse tests on lines and substations [includes discussion]

Since August 1952, high-voltage surge studies have been in progress at the 500-kv test project sponsored by the American Gas and Electric Company. The 500-kv test project is located adjacent to the Tidd power plant near Brilliant, Ohio. The surge studies were conducted as a co-operative program between the Westinghouse Electric Corporation and the American Gas and Electric Service Corporation. Westinghouse supplied the surge generator and all necessary measuring equipment; American Gas and Electric erected the high-voltage bus, surge generator, and control building, in addition to making the transmission lines available for the tests. The surge studies were divided into two principal sections: line attenuation and substation characteristics. Companion papers discuss each of these groups. The purpose of this paper is to describe the surge generating and measuring equipment used, and the techniques involved.