China’s First Extra High Voltage Cables Highlights – Liujiaxia Hydropower Station (figure) –

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Yongjing Liujiaxia Hydropower Station was built in the Yellow River on the county. It is the former hydroelectric power station is responsible for surveying the Northwest Survey and Design Institute, Beijing Design Institute survey, Liujiaxia Hydropower Engineering Bureau (now the Bureau of Water 4) bear the national construction and installation of the first mega kilowatt hydropower station. Station 147 m high dam, dam crest length 840 m, 204 m long main dam, top width of 16 meters, located 350-ton gantry Crane , A lift from the factory through crest.

Liujiaxia Power Station is based on the First National People Table The second meeting of the General Assembly “adopted by the radical damage and the development of the Yellow River Yellow River Comprehensive Water Planning The resolution “, in accordance with the” independence

Self-reliance “policy, its own investigation and design, their manufacturing equipment, its construction and installation, commissioning management, their first million kilowatts over the domestic large-scale hydroelectric power stations.

1956 3 month of the preliminary design, in September 1958 to commence work April 1, 1969 the first generating unit, all built in 1974. A total of 5 sets of water wheels installed Generator Group, with a total installed capacity of 1,225,000 kilowatts, designed annual generating capacity of 5.7 billion kwh. Power from the four 220,000-volt and a 330,000-volt transmission lines sent Lanzhou, Tianshui, Qinghai and Shaanxi Guanzhong region Machinery and equipment Lack of technical means backward, living conditions were difficult, the masses of builders to carry forward the “no conditions, to create the conditions have to” and not afraid of difficult and arduous struggle, after a year of hard work, achieved in 1960 New Year’s Day river closure. Was on May 1, the main dam began pouring concrete 134 thousand cubic meters in 1964 resumed in May 1968 to begin the installation, water gates in late October. March 29, 1969, the first unit commissioning, in December 1974, all 5 units in operation. The whole project Investment 638 million yuan. So far, the country’s first large capacity of 1 million kilowatts or more into hydropower victory.

Plant located downstream of the main dam, the dam toe, closed underground mix plant. Plant length 169.8 meters. The installation of five hydroelectric generating unit, security capacity of 1.32 million kilowatts, Output of 400,000 kilowatts, designed annual generating capacity of 5.7 billion kwh. Boost plant a total of 5 sets Transformer , 1 220 kV and 330 kV transformer in. Switching Station 3, that is, underground 220 kV, 220 kV and 330 kV toe switch stations, high-pressure Cable Up to a thousand meters. Outlet 5 back. One 220 kV outlet 4 back. Strong power switching station by four by three 220,000-volt and a 330,000-volt transmission line, sub-four transportation to Lanzhou, Tianshui, Xining, off the middle region, to Shaanxi, Gansu, Qinghai and other provinces of the grid linked together, which Liujiaxia vital in more than 530 km long, 330,000 volt transmission lines are built in China for the first time to the longest transmission line is known. Liujiaxia Hydropower Station in order to form a hub for the Northwest Power Grid.

For the manufacture of extra high voltage power cables Liujiaxia Hydropower Station, the new China is placed in front of the young cable industry, a major task. Shenyang Cable Factory and Shanghai Cable Works undertook one of the glorious and arduous mission, is cable plant two Chinese large independent, self-reliance in manufacturing extra high voltage cables, the starting point for creating brilliant achievements.

Liujiaxia Hydropower Station is a masterpiece of Chinese working class, Gansu Provincial Committee in 1995, was named the patriotism education base. [Popular Keywords]: Popular Wire & Cable Comment Large In Small

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