Method for expanding the electrical transmission capacity of an overhead-line pylon system

Patent metadata

Field	Value
Publication number	US-10622798-B2
Application number	US-201716089349-A
Country	US
Kind code	B2
Filing date	Mar 29, 2017
Priority date	Mar 29, 2016
Publication date	Apr 14, 2020
Grant date	Apr 14, 2020

Abstract

The invention relates to a method for subsequently expanding the electrical transmission capacity of an overhead-line pylon system as part of an electrical high-voltage network, which comprises at least two overhead-line pylons, wherein the line cables stretched between the overhead-line pylons have a total transmission capacity and a total line cross-section, wherein the method provides for an increase in the total transmission capacity between the overhead-line pylons by recabling and/or an increase in the load-bearing capacity of the overhead-line pylons.

First claim

The invention claimed is:

1. A method for retroactively expanding the electrical transmission capacity of a power transmission tower system as part of a high-voltage electrical grid, which comprises at least two power transmission towers ( 1 ) and a plurality of conductor cables suspended between them, wherein the conductor cables suspended between the power transmission towers ( 1 ) have a total transmission capacity and a total conductor cross section, and wherein the power flow of at least one conductor cable is regulated in terms of an optimization to a higher transmission capacity, as a function of a temperature of a relevant conductor cable, the method comprising at least one or more steps of:
suspending at least one additional conductor cable between the power transmission towers ( 1 ), which is insulated with respect to the existing conductor cables;
suspending at least one additional conductor cable between the power transmission towers ( 1 ), which is in direct electrically conductive contact with an existing conductor cable exchanging at least one conductor cable having a first, smaller conductor cross section, for a conductor cable having a second, larger conductor cross section or having a higher conductivity;
exchanging at least one conductor cable comprising individual conductors which have a symmetrical cross section, for a conductor cable comprising individual conductors which have an asymmetrical cross section; and
at least partially changing the arrangement, interconnection, and insulation of the conductor cables of extra-high-voltage or high-voltage alternating-current transmission, to extra-high-voltage or high-voltage direct-current transmission.

2. The method as claimed in claim 1 , further comprising partial retrofitting the at least two power transmission towers ( 1 ) and the conductor cables suspended between them, from extra-high-voltage or high-voltage alternating-current transmission, to extra-high-voltage or high-voltage alternating-current transmission, and extra-high-voltage or high-voltage direct-current transmission.

3. The method as claimed in claim 1 , further comprising partial retrofitting the at least two power transmission towers ( 1 ) in such a way that conductor cables for different voltage levels are suspended between them.

4. The method as claimed in claim 1 , characterized in that at least one conductor cable is actively cooled for increasing the conductivity.

5. The method as claimed in claim 1 , further comprising: providing a structural reinforcement of at least one of the power transmission towers ( 1 ).

6. The method as claimed in claim 1 , further comprising: providing a foundation reinforcement of at least one of the power transmission towers ( 1 ).

7. The method as claimed in claim 1 , characterized in that an additional tower is erected between the at least two power transmission towers ( 1 ), which supports a portion of a weight of the conductor cables, whereby a support spacing of the at least two power transmission towers ( 1 ) is decreased.

Assignees

• Innogy Se

Inventors

• Bartminn Daniel
• Koch Friedrich
• Runge Jorn

Classifications

• E04H12/18

  movable or with movable sections, e.g. rotatable or telescopic · CPC title

• H02G7/00

  Overhead installations of electric lines or cables (installations of bus-bars H02G5/00) · CPC title

• H02G7/20 Primary

  Spatial arrangements or dispositions of lines or cables on poles, posts or towers · CPC title

• E04H9/16

  against adverse conditions, e.g. extreme climate, pests · CPC title

• H02G1/02 Primary

  for overhead lines or cables · CPC title