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<br />OOOS8~ <br /> <br />. <br /> <br />. <br /> <br />system, namely, Series Capacitor Stations. These will be installed on the <br /> <br /> <br />345-kv Glen Canyon-Pinnacle Peak lines to improve system stability and <br /> <br />regulate flows over the high-voltage interconnected systems in Arizona. <br /> <br />Construction is expected to start early next year and be completed by 1970. <br /> <br />'{' <br />TRANSMISSION SYSTEM OPERATION <br /> <br />The interconnection of power systems of the East and West, which was <br /> <br />first made on February 7, 1967, continues to operate satisfactorily. Many <br /> <br />swings both east and west have occurred across the new ties as systems ex- <br /> <br />perience periods of imbalance between their own generation and load. Only <br /> <br />minor breaker operations have developed, however, and none of these have <br /> <br />caused outages to the ultimate consumer. <br /> <br />A vital link in the East-West tie is the 230-kv transmission line <br /> <br />from Hayden to Cheyenne (Archer). This line was broken on April 13 when <br /> <br />a severe snow' and ice storm coupled with high winds toppled seven steel <br /> <br />towers near Cheyenne. The failure caused a rerouting of East-West power <br /> <br />flows through other ties and some changes in schedule, but no interruptions <br />to service were caused b~;fhe failure. Replacement steel was obtained <br />from other Bureau construction and the line was returned to service within <br /> <br />three weeks. <br /> <br />it} <br />MARKErING OF CRSP POWER <br /> <br />Af3 of April 15, 1967, the Bureau had 77 contracts for the sale of firm <br /> <br />power including one contract recently completed with Intermountain Consumer <br /> <br />Power Association which superseded 19 individual customer contracts in Utah. <br /> <br />3 <br /> <br />