Yangtze River power line crossings

The Yangtze overhead line crossings are several different overhead line crossings for high -voltage power lines on the Yangtze River in the People's Republic of China. Due to the width of the river and the need not to interfere with the navigability, this overhead line crossings have very high pylons, which are among the highest towers in China.

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Jiangyin

This is a 500 - kV high- voltage line for three-phase alternating current from the power plant to the substation Dou Yan Cheng Shan near the city of Jiangyin in Jiangsu Province, China.

The leading over the Yangtze River line section has a span of 2,303 meters. He is supported by two 346.5 -meter-high pylons with a weight of 4,192 tons. Both masts are designed as free-standing steel truss structures with a cross section of 68 meters x 68 meters on the ground and 8 meters x 8 meters at the top and have two beams for the inclusion of six conductor cables that are attached to ten meters long insulators.

The lower of the two cross is located in 302 meters and has a length of 77 meters. The masts are designed as so-called Danube masts. Both masts, which are not only much higher than any other pylons, but also surpass the Eiffel Tower are equipped with a maintenance elevator.

On each side of the Yangtze River a follow further down the line depending on two tension towers, for each circuit. They are 55 meters high, weighing 110 tons and standing on an area of ​​16 meters x 24 meters. The construction of the towers began on 8 November 2002. Completed they were on 13 April 2004. The line was put into operation on 18 November 2004.

Coordinates: 31 ° 57 '5 " N, 120 ° 2' 54" O31.951388888889120.04833333333

Wuhu

This is the overhead line crossing of HVDC Three Gorges Dam - Changzhou, a bipolar high-voltage direct current (HVDC ) with ± 500 kV DC voltage which the Yangtze River crosses on two 229 feet high, constructed as a steel tube construction pylons in Wuhu, with a span of 1,910 meters. The two poles crossing the Yangtze overhead line crossing Wuhu are the highest towers, which were built to this day for HVDC systems.

East and west of this line there ever a more overhead line crossing the Yangtze River for three-phase.

• Eastern Mast: 31 ° 30 '2 " N, 118 ° 22 ' 11 " O31.500555555556118.36972222222
• Western Mast: 31 ° 30 ' 37 "N, 118 ° 21 ' 11 " O31.510277777778118.35305555556

Nankeen

The overhead line crossing Nanking is the crossing of a 500 kV high- voltage line for three-phase alternating current with the Yangtze River in Nanjing. The transmission line was completed in 1992 has two three-phase systems with three conductors.

The masts are designed as a 257 -meter-high reinforced concrete structures and thus are among the tallest reinforced concrete towers in the world. The span is 2,053 meters.

Coordinates: 31 ° 57 '11 "N, 118 ° 38' 5" O31.953055555556118.63472222222