Lighting a network analyzer area

ELECTRIC power systems have grown tremendously in the first half of the 20th century. This phenomenal increase includes expansion of each of the following components: 1. Greater number of load service points , transmission and distribution stations, industrial plants, and adjacent system interconnections. 2. Greater number of transmission lines, wider range of transmission voltage, and a trend toward higher voltage levels. 3. Greater number of generating points both company owned and those resulting from interconnections.