Design method of guyed tower for ultrahigh voltage +/-800kV engineering

A design method and technology for pulling towers, applied in towers, computing, special data processing applications, etc., can solve problems such as large amounts of iron towers and basic consumables

Active Publication Date: 2015-04-22
STATE GRID CORP OF CHINA +8
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0014] However, the existing rigid cross-arm transmission line tower is a statically indeterminate space truss structure, and the consumption of the tower and the foundation is relatively large; and the current tower design m...

Method used

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  • Design method of guyed tower for ultrahigh voltage +/-800kV engineering
  • Design method of guyed tower for ultrahigh voltage +/-800kV engineering
  • Design method of guyed tower for ultrahigh voltage +/-800kV engineering

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Embodiment Construction

[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0039] The iron tower form involved in the present invention adopts a group of flexible cables to replace the rigid cross arm part of the original iron tower. The tower is composed of two columns, suspension cables and stay wires, such as Figure 4 shown. The two columns are of the same form, using a lattice truss, closed at one point at the foot of the tower, and hinged to the foundation. The top of the column is provided with ground wire hanging points, su...

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Abstract

The invention discloses a design method of a guyed tower for ultrahigh voltage +/-800kV engineering. The method comprises the steps of drawing a clearance circle according to the design condition, producing the clearance circles for various design conditions and envelop curves of the clearance circles, and calculating the space between horizontal lines, space between vertical lines and distance to ground of guide lines; setting the space between two vertical columns and the positions of insulator string suspension points according to the size of the envelope curves of the clearance circles, the space between the horizontal lines and the space between the vertical lines of the guide lines, and creating a preliminary scheme of an iron tower; calculating the design conditions including heavy wind, ice covering, line breaking and installation, loads including operation overvoltage, thunder and lightning overvoltage and working conditions including electric work and the load combination through a nonlinear calculation module; adjusting the preliminary arrangement scheme of the iron tower according to the load and load combination; adjusting the specification of any rod without meeting the stressing condition; finally determining the space between the vertical columns, inclination angles of the main columns, the positions of the insulator suspension points, the positions of the guide line suspension points and the inclination of bracing wires as well as the specification of a component and joint design.

Description

technical field [0001] The invention relates to the field of high-voltage power transmission, in particular to a design method for a cable tower used in an ultra-high voltage ±800kV project. Background technique [0002] In the past, the transmission line towers used rigid cross-arms to suspend the wires and their insulators. The force transmission method was that the wire load was transmitted to the cross-arms of the wires through the insulators, and then transmitted from the cross-arms to the tower body. The crossarm is usually made of steel or other composite materials with a large elastic modulus. It is a steel frame or truss structure composed of multiple components. The deformation under the action of force is very small and can be ignored. figure 1 It is a common rigid cross arm in the form of truss. Wherein the label indicates: the tower body 10, the rigid wire cross arm 11. [0003] figure 2 It is the most commonly used self-supporting tower in ±800kV transmissi...

Claims

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Application Information

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IPC IPC(8): E04H12/08E04H12/10E04H12/20H02G7/20G06F17/50
Inventor 施菁华王玉雷李喜来张红志张华吴启维马志坚郭峰刘今任胜军杜国良邹峥李晨刘玮张哲鑫张健李鑫何健薛春林范峥王子瑾张冯硕周成钧段然李雪肖洪伟吴静新何江周建军曾二贤
Owner STATE GRID CORP OF CHINA
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