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Method for designing ADSS optical cables controlled by conductor sag

A design method and wire sag technology, applied in the direction of fiber mechanical structure, etc., can solve the problems of not being able to determine the ADSS optical cable standard, and the design of ADSS optical cable is not standardized, so as to reduce the design workload and improve the safety effect.

Inactive Publication Date: 2010-04-14
CEEC JIANGSU ELECTRIC POWER DESIGN INST
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  • Summary
  • Abstract
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AI Technical Summary

Problems solved by technology

Various manufacturers have different understandings of technology and their bidding strategies, and the same application conditions cannot determine a unified ADSS optical cable standard, which makes the design of some ADSS optical cables non-standard, resulting in a large number of cable breakage accidents

Method used

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Embodiment Construction

[0013] ADSS optical cable is a non-metallic self-supporting optical cable developed to utilize the abundant tower resources of the power system and adapt to the application conditions of large-span power lines and high electric field strength. Due to the wide variety of application conditions of ADSS optical cables, their composition materials and material properties are different, and domestic and foreign ADSS optical cables have not yet formed a unified model series and design application standards. The difficulty lies in the fact that the five parameters of the ADSS optical cable, outer diameter, elastic modulus, thermal expansion coefficient, breaking strength and weight, are interrelated, and one or several parameters cannot reflect the mechanical strength of the optical cable.

[0014] The present invention considers that the ADSS optical cable is applied to the existing power transmission line, and the existing line is designed according to the determined ground wire mod...

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Abstract

The invention discloses a method for designing ADSS optical cables controlled by conductor sag. The method is characterized by including the following steps: 1) calculating conductor sag under maximum operation condition of different spans according to original line conditions; 2) employing the conductor sag as an ADSS optical cable sag controlling condition to unify optical cable model selection standards; 3) determining mount points of the ADSS optical cables according to electric-field intensity of lines; 4) conducting stringing design by using selected optical cables. As the ADSS optical cables need smaller safety distance than conductors and optical cable sag is not more than the conductor sag, the method for designing ADSS optical cables controlled by the conductor sag needs no cross bridging check, solves the problem of standardization of the ADSS optical cables, forms a scientific and precise design method, improves the safety of the ADSS optical cables and reduces design workload.

Description

technical field [0001] The invention relates to an engineering design method for a special optical cable ADSS (All-Dielectric Self-supporting Fiber Optic Cable) in a power system, and belongs to the technical field of optical cable engineering design. Background technique [0002] ADSS optical cable is a new form of optical cable developed rapidly in the past two decades to make full use of the abundant tower resources of the power system. The existing ADSS optical cable standard in the industry is a manufacturing standard, and there is no unified engineering design standard and design method. [0003] The commonly used ADSS optical cable design method is: first, according to the maximum span in the line tension section, the bidder configures the optical cable model according to its enterprise standard, and then determines the ADSS optical cable hanging point according to the electric field strength of the line, and then the engineering designer performs the optical cable ac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/44
Inventor 王根华
Owner CEEC JIANGSU ELECTRIC POWER DESIGN INST
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