EP4259893A1 - Tour en treillis modulaire pour construire une ligne de transmission électrique aérienne à haute tension, avec agencement à usages multiples variable, son système modulaire et procédé de construction - Google Patents

Tour en treillis modulaire pour construire une ligne de transmission électrique aérienne à haute tension, avec agencement à usages multiples variable, son système modulaire et procédé de construction

Info

Publication number
EP4259893A1
EP4259893A1 EP21839258.7A EP21839258A EP4259893A1 EP 4259893 A1 EP4259893 A1 EP 4259893A1 EP 21839258 A EP21839258 A EP 21839258A EP 4259893 A1 EP4259893 A1 EP 4259893A1
Authority
EP
European Patent Office
Prior art keywords
crossarms
top portion
transverse
brackets
uprights
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP21839258.7A
Other languages
German (de)
English (en)
Inventor
Roberto SPEZIE
Piero MATLI
Maurizio CARBONE
Enrico DI VITO
Piero BERARDI
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Terna SpA
Original Assignee
Terna SpA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Terna SpA filed Critical Terna SpA
Publication of EP4259893A1 publication Critical patent/EP4259893A1/fr
Pending legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
    • E04H12/02—Structures made of specified materials
    • E04H12/08—Structures made of specified materials of metal
    • E04H12/10—Truss-like structures
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
    • E04H12/24—Cross arms

Definitions

  • the present invention relates to an innovative modular lattice tower to realize a high-voltage overhead transmission line with variable multi-purpose arrangement , where the term "high voltage” is to be understood as a range of voltage values defined by the standard of reference , in particular by EN 50341 - 1 , where this standard covers the design and reali zation of overhead electrical lines with rated voltage greater than I kV .
  • the present invention also relates to the correlated, and still innovative , modular system to reali ze the aforesaid lattice tower, capable of satis fying various configuration requirements with a minimum number of components .
  • the present invention relates to an innovative method to reali ze , or modi fy in situ, a modular lattice tower for high-voltage overhead power lines with variable multipurpose arrangement .
  • the Applicant in his capacity as a manager of a High Voltage (HV) Electricity Grid, has the need to reali ze and/or adapt high-voltage overhead lines that reach di f ferent types of territory and that allow the transmission of electricity at di f ferent transport voltages , also depending on the distances covered and on the electrical management of such portions of the Grid ( typically 66kV and 132- 150kV) , as well as to connect Active and Passive Users who request connection to the HV Electricity Grid, all in accordance with the best principles of economic and environmental sustainability of the works , finally facilitating, as far as possible , the construction of the HV supports , also with reference to the resilience of the electrical infrastructure .
  • HV High Voltage
  • reticular structures comprising a base anchored to a foundation structure , for example consisting of one or more reinforced concrete plinths embedded at least partially in the ground, and a lattice body ending with a portion of the structure (the so-called “pole head” , also referred to hereinafter simply as the "top portion” ) to which, by means of special reticular appendages ( transverse crossarms ) and chains of insulators or with insulating appendages ( insulating crossarms ) , the HV (high- voltage ) energy conductors are mechanically connected, constituting the three-phase HV line to be supported, which may be a three-conductor line , known as a "Simple Circuit” or SC, or a six-conductor line ( known as a "Double Circuit” or DC ) and which performs the functions of a double three- phase transport line for the transmission of electricity .
  • the "pole head” f inally culminates in one or more reticular
  • transverse crossarms e . g . made with a reticular structure , fixed transversely on the pole top portion, or they can depart directly from the pole head, forming insulating crossarms, also fixed transversely to the pole top portion.
  • the body and the top portion are generally realized as a single truncated-pyramidal reticular structure, the top of which, overlying the energy conductors and the relative support crossarms, receives a pointed end element, the so-called “earth wire peak”, pyramidal in shape, having a designed end vertex to which the ground wire is connected, also commonly referred to as the "ground line”.
  • the tower takes on different shapes and sizes, making the individual towers non-interchangeable and, often impossible to adapt in the case of switch to the configuration with insulating crossarms, switch from the lower 66kV to the higher 132-150kV voltage level, or when switching from the traditional crossarms to the insulating crossarms and, again, from the configuration for "plain” arrangement to the configuration for "mountain” arrangement, which differs in the vertical offset of the conductors.
  • Prefabricated towers that can be used for emergency repairs of an HV electrical transmission line are also known from WO2014/153962. These prefabricated towers are formed entirely by the mutual joining of self-supporting cubic reticular modules, mounted superimposed. Such prefabricated towers are relatively expensive, relatively unstable and are only suitable for temporary use, i.e. only for carrying out emergency repairs.
  • Aim of the present invention is therefore to overcome, or at least alleviate , the problems outlined above and to allow to reali ze the lattice towers relatively quickly and at low cost , especially for high-voltage overhead transmission lines , with variable multi-purpose arrangement , i . e . which are suitable to satis fy all types of use , particularly in the high-voltage field and essentially without modi fications or with minimal prior modifications of the body .
  • the invention relates to the modular system to reali ze a lattice tower, as well as to the HV lattice tower obtainable with the modular system of the invention, as well as to the method to reali ze , or modi fy in situ, a lattice tower for high-voltage overhead power lines , as defined in the appended claims .
  • the lattice tower of the present invention has a base , which can be anchored to the ground, a truncated-pyramidal body and a top portion configured to connect , in suspension rather than in tension, respective conductors of a high-voltage overhead electrical transmission line ;
  • the top portion is a single , reticular and rectilinear structure formed by at least four straight uprights of prefixed length and by a plurality of angles arranged transversely to the uprights connecting them in a vertical and parallel direction .
  • the top portion remains geometrically divided in order to define a recursive configuration of shape , in which the recursive configuration of the top portion is such as to :
  • the single top portion and the relative crossarms are suitable for creating a tower support with variable arrangement such as to implement different possible electrical geometries and thus have a multi-role solution that is:
  • the aforesaid multi-disciplinary feature of the lattice tower of the invention allows for adaptations and/or modifications even during operation of the power line.
  • the modular system of the invention also comprises a first set of transversal crossarms made of reticular structure and a second set of insulating transverse crossarms , of known type , which can be selectively fixed on opposite lateral transverse faces of the top portion, at di f ferent heights , for example in correspondence with single three-dimensional modules spaced vertically from each other by means of other three-dimensional modules without transverse crossarms .
  • the transverse crossarms of the first set are configured to selectively receive , at a first end thereof , opposite the body, first insulator suspension set or second insulator tension set for the support of the conductors .
  • the insulating transverse crossarms of the second set are configured to directly support the conductors of the HV power line at a first end thereof , opposite the body .
  • the first set of transverse crossarms in lattice structure then includes first crossarms identical to each other and having the same transverse overhang from the top portion and second crossarms , also generally identical to each other, having a transverse overhang from the top portion greater than that of the first crossarms .
  • each set of crossarms there is /are also provided one or more crossarms with increased transverse overhang; it is thus possible to modulate the type of obtainable tower, configuring the lattice for di f ferent rated voltage levels , for example a first voltage level at 66kV (first set of crossarms ) or a second level at 132 - 150kV ( second set of crossarms ) as well as for installation in the plain, where the conductors can be arranged at the same transverse distance (by virtue of the use of crossarms with the same transverse overhang) or for installation in the mountain, where the conductors underlying other conductors must be arranged transversely staggered from each other, so that adj acent conductors are not on the same vertical (by virtue of the use of one or more crossarms with an increased transverse overhang compared to the others ) .
  • the installation in the plain as well as in the mountain for the voltage level 132 - 150kV is also obtainable with the second set of insulating transverse crossarms , which are all identical to each other .
  • the modular system of the invention further comprises a set of first , second, third and fourth brackets selectively fixable to the top portion, each in correspondence of one or more of the three-dimensional modules in which it is divided to constrain lateral ly to the same a respective insulating transverse crossarm .
  • the first and second brackets are configured to be fixed at a higher attachment point of each insulating transverse crossarm at , respectively, a first and a second prefixed transversal distance from the top portion, the second prefixed distance being greater than the first prefixed distance .
  • first and second brackets are configured to extend overhanging from the top portion, the second brackets with an overhang greater than that of the first brackets .
  • the first and second brackets are formed by two angle elements , e . g . reticular, connected together at a first end thereof and connected at the other end to respectively an upper end and a lower end of a three-dimensional module so as to form with it , in an elevation frontal view, an isosceles triangle .
  • the third brackets are configured to be fixed to a lower attachment point of each transversal insulating crossarm in order to ensure its attachment to the tower at a third prefixed distance from the top portion, in pair with one second bracket bound to the upper end of the same insulating transverse crossarm .
  • the third brackets are configured to extend overhanging from the top portion with an overhang s lightly smaller than that of the second brackets and are formed by two angle elements , e . g . reticular, connected together at a first end thereof and connected at the other end thereof to respectively an upper end and a lower end of a three-dimensional module so as to form with it , in a front elevation view, a rectangular triangle .
  • the fourth brackets are configured to be fixed to a lower attachment point of each insulating transverse crossarm, in pair with a first bracket constrained to the upper end of the same insulating transverse crossarm .
  • the fourth brackets are constituted by attachment feet shaped like a U arranged hori zontally and facing the side opposite to the tower, fixed to a lower end of the three-dimensional modules .
  • transverse crossarms can be fixed to the three-dimensional modules of the top portion in alternately opposite lateral positions along the vertical of the tower for SC supports or in pair of crossarms placed at the same height from the ground, extending overhanging from both opposite sides of the top portion and which are arranged in pair below the other for DC supports , in correspondence of suitably configured three-dimensional modules .
  • the modular system according to the invention preferably also comprises respective attachment points for the transverse crossarms of the first and second set arranged in correspondence with the three-dimensional modules , preferably at an upper end, or top , and a lower end, or base , of each three-dimensional module .
  • the modular system comprises a set of three-dimensional reticular point-shaped end elements or earth wire peaks , of pyramidal shape and square base , configured to be fixed in an integral way to the top of the top portion and having at least two di f ferent heights , so as to selectively reali ze lattice towers for power lines of 135- 150kV with the earth wire peaks at higher height or 66kV with the earth wire peaks at lower height .
  • the three- dimensional modules can be configured to be reali zed in an integral way with each other so that the upper end of one module constitutes the lower end of another immediately overlying module .
  • Suitably bolted metal plates are preferably used to constrain the components of the three-dimensional modules together, i . e . the reticular structure and the transverse crossarms .
  • Figures 1 to 4 show di f ferent types of modular towers , i . e . Single-Circuit suspension and tension as well as Double-Circuit suspension and tension, all of which can be reali zed according to the gist of the invention, in particular by means of attachments of special reticular appendages represented with a thicker blackcoloured line ; the modular tower can thus be used in a versatile manner and in particular for the renewal of HV overhead power lines (with general reference to power lines from the 1920s to the 1950s ) , through an environmentally sustainable solution, either on a 66kV overhead line with Traditional Crossarms , or on a 132- 150kV overhead l ine with Traditional or Insulating Crossarms , as well as in the hypothesis of a line initially at 66kV that needs upgrading to a higher voltage level ( 132 - 150kV) , following the rationalisation of portions o f the electricity grid;
  • Figure 5 shows one of the modular towers which can be reali zed according to the present invention, shown without the relative crossarms ; the tower compri ses , in particular, a single reticular bearing structure , called top portion, with parallel faces , characteri zed by the repetitiveness of a parallelepiped shape ;
  • Figure 6 shows the respective top portions of the various types of tower considered, i . e . as a Single- or Double-Circuit , and with connection of the conductor in Suspension or Tension .
  • Figures 7 to 14 show, schematically and in a lateral elevation view, lattice towers for overhead power lines of the Single-Circuit type , according to the invention, for which, for simplicity of exposure , only an upper part of the body is shown in detail , including the top portion, and in which the components which can be selectively used from time to time are shown with a more marked line ;
  • Figure 15 shows , on an enlarged scale , the details A) , B ) , B' ) , C) and D) of the connection of traditional crossarms to the Single-Circuit towers referred to in Figures 7 to 14 ;
  • Figures 16 to 23 show, schematically and in a lateral elevation view, di f ferent types of lattice towers for overhead power lines of the Double-Circuit type , according to the invention, for which, for simplicity of exposure , only an upper part of the body is shown in detail , including the top portion, and in which the components which can be selectively used from time to time are shown with a more marked line ;
  • Figure 24 shows , on an enlarged scale , the details A' ) , B' ) , B" ) C ) , D) and D' ) of the connection of traditional crossarms to the Double-Circuit towers referred to in Figures 15 to 23 ;
  • Figures 25 to 28 show, schematically and in a lateral elevation view, respective types o f lattice tower for overhead power l ines with insulating crossarms , for which, for simplicity of exposure , only an upper part of the body is shown in detail , including the top portion, and in which the components which can be selectively used from time to time are shown with a more marked line ;
  • Figure 29 shows , on an enlarged scale , the details D) , E ) , F) , G) , H) and I ) of the connection of the insulating crossarms to the Single- and Double-Circuit towers referred to in Figures 25 to 28 ;
  • Figures 30 to 33 show, in schematic form, the operating instructions for carrying out the various trans formations and obtaining the towers referred to in the previous figures .
  • reference number 1 denotes a lattice tower for high-voltage (HV) overhead power lines having a lattice structure which can be anchored to the ground by means of , for example , a base 2 and a body 3 ending, at the side opposite to the base 2 , with a top portion 4 designed to connect , in suspension rather than in tension, respective conductors 5 o f a high-voltage overhead transmission line , known and not shown in detail for simplicity .
  • HV high-voltage
  • the top portion 4 of the lattice tower 1 is reali zed with the modular system according to the invention .
  • this modular system comprises , and is therefore defined by :
  • a truncated-pyramidal reticular structure 7 forming, in whole or in part , the body 3 ,
  • the straight uprights 36 are configured to be connected ( and are connected, in the tower 1 ) to each other with a plurality of angles 20 , 21 , 37 arranged transversely to the uprights and are configured to be fixed in a vertical direction V and parallel to each other on the first reticular structure 7 , so as to form a single straight reticular structure 38 of parallelepiped shape, overhanging the body 3 , which in turn is formed by the first truncated-pyramidal reticular structure 7 .
  • the uprights 36 and the respective transverse angles 20 , 21 37 are configured to give the reticular structure 38 defining the top portion 4 , a prefixed recursive configuration which, as a whole , forms a plurality of three- dimensional modules 8 identical to each other and arranged sequentially in the vertical direction V .
  • the three-dimensional modules 8 are reali zed by assembling the uprights 36 with :
  • the modules 8 in which the recursive geometry top portion 4 can ideally be divided can have a cubic or parallelepiped shape.
  • the modular system and thus also the tower, also comprises a set of known three-dimensional reticular pointshaped end elements 9b, 9c, known as "earth wire peaks" ( Figures 7 and 8) , of pyramidal shape and with square base.
  • the set of end elements 9b, 9c may comprise, for example, two (or more) different types of earth wire peaks, all configured to be fixed in an integral way with a respective three-dimensional module 8b arranged at the top of the top portion 4 and having at least two different heights, for example a "short" earth wire peaks 9b having a simple tetrahedral or reticular structure and an earth wire peak 9c, which is higher than the earth wire peak 9b and always having a reticular structure.
  • the height of the earth wire peaks 9b, 9c is chosen according to the rated electrical voltage of the HV overhead line, e.g. the shorter earth wire peaks 9b can be used on 66kV lines, while the taller earth wire peaks 9c can be used on 132-150kV lines.
  • the modular system also comprises a first set of transverse crossarms 10 and 11 made of reticular structure, for example, in a known way and therefore not described in detail, and which can be fixed laterally on opposite lateral transverse faces of the top portion 4.
  • Both types of transverse crossarms 10 and 11 of the first set are configured to selectively receive, at a first end 12 thereof, opposite the body 3, each a suspension insulator 13 (of known type) or tension insulators 14 (also of known type) for the support of the conductors 5.
  • the first crossarms 10 are identical to each other (in terms of electrical voltage level ) and have the same overhang or transverse overhang from the top portion 4 , while the second crossarms 11 have an overhang or transverse overhang from the top portion 4 greater than that of said first crossarms 10 .
  • crossarms 10 , 11 may be variously combined in number and arrangement on the same top portion 4 to obtain in a modular way di f ferent types of lattice towers 1 .
  • the modular system further comprises a second set of insulating transverse crossarms 15 ( Figures 25 and 26 ) , of known type , which can be fixed laterally, in the way that will be seen later, on the opposite transverse faces of the top portion 4 , which crossarms 15 are configured to support directly and in a known way, at a first end thereof 16 opposite the body 3 , the conductors 5 .
  • crossarms 15 together with further components of the modular system which will be described below, can be used in place of the crossarms 10 , 11 and the corresponding suspension 13 or tension 14 insulators , so their mounting on the top portion 4 is normally alternative to the use of the crossarms 10 , 11 .
  • the modular system according to the invention further comprises respective points or knots of attachment 18 for the transverse crossarms 10 , 11 of the first set and for the crossarms 15 of the second set .
  • the aforesaid points or knots of attachment 18 are conveniently arranged at the lower and upper end of the recursive shape identi fying the three-dimensional modules 8 .
  • the aforesaid points or knots of attachment 18 are arranged in the direction V between pairs of three- dimensional modules 8 .
  • the aforesaid points or knots of attachment 18 are in correspondence with the knots of the reticular structure 38 forming the sequence of individual three-dimensional modules 8 . It follows that said aforesaid points or knots o f attachment 18 are obtained as integral parts of the reticular structure 38 and of each module 8 and are configured in correspondence o f an upper end, or top 20 , and of a lower end, or base 21 , of each module 8 , so that at least part of ( or all ) the transverse crossarms 10 , 11 of the first set and the transverse crossarms 15 of the second set may be fixed to the reticular structure 38 o f the top portion 4 in correspondence of any of the three-dimensional modules 8 .
  • the reticular structure 38 also includes points or knots of attachment 19 , apt to form a second set of attachment points for the crossarms 11 , i . e . those with increased length with respect to the crossarms 10 ; said points or knots 19 are substantially allocated in the centre line of one or more modules 8 , i . e . formed arranged between their ends 20 and 21 , with the advantage of being able to fix crossarms , in particular the aforesaid crossarms 11 partly on a first module 8 and partly on another immediately overlying module 8 .
  • crossarms 10 , 11 can be fixed to the top portion 4 , at the height of di f ferent modules 8 of the reticular structure 38 in alternately opposite lateral pos itions to obtain SingleCircuit towers .
  • the crossarms 10 , 11 may be fixed on the top portion 4 and in pairs side by side , on the opposite transverse faces of a single module 8 and below, arranged at di f ferent heights , to obtain a Double-Circuit tower 1 .
  • the crossarms 10 and/or 11 extend overhanging from the opposite transverse faces , starting from both opposite sides of the top portion 4 and are arranged one below the other, in correspondence of three-dimensional modules 8 between which at least one three-dimensional module 8 without crossarms is preferably arranged, so as to be vertically spaced apart from each other by a prefixed and adj ustable quantity based on the number of modules 8 without crossarms 10 , 11 being reali zed .
  • the insulating crossarms 15 of the second set of crossarms can be mounted on the top portion 4 with configurations similar to that described for the crossarms 10 , 11 .
  • the modular system also comprises a set of first brackets 22 , second brackets 23 , third brackets 24 and fourth brackets 25 , each of which can be selectively fixed to the top portion 4 in correspondence of one or more of the three-dimensional modules 8 in which the top portion 4 is divided, in order to laterally bind to the same a respective insulating transversal crossarm 15 of the second set of transversal crossarms , which is thus connected to the top portion 4 , in correspondence of the modules 8 with interposition of a pair of brackets 22 , 25 or 23 , 24 .
  • the first and second brackets 22 , 23 are configured to be fixed to an upper attachment point 26 of each insulating transverse crossarm 15 at , respectively, a prefixed first and second transverse distance from the top portion 4 , the second prefixed distance being greater than the first prefixed distance .
  • first and second brackets 22 , 23 are formed, each, by two angle elements 27 and 28 , for example of the reticular type or made of profiles , connected to each other at their first end 29 and connected to respectively the upper end 20 and the lower end 21 of a three-dimensional module 8 so as to form with it, in an elevation frontal view, an isosceles triangle.
  • the angle elements 27, 28 are connected to the knots 18, which also connect together the three- dimensional module 8 to which the angle elements 27,28 are connected with two other modules 8, arranged above and below it, respectively.
  • the ends 29 are in turn connected by a knot 30, for example consisting of a side-by-side pair of bolted plates 31.
  • brackets 22 and 23 consists in the different length of angle elements 27,28, where shorter angle elements 27b, 28b are used for the bracket 22, and longer angle elements 27c, 28c are used for the bracket 23, so that the angle formed by the junction of the elements 27c, 28c (e.g. about 30°) is less than that formed by the junction of the elements 27b, 28b (slightly more than 90°) .
  • first and second brackets 22,23 are both configured to extend overhanging from the top portion 4, but the second brackets 23 with an overhang greater than that of the first brackets 22.
  • the third brackets 24 are configured to be fixed to a lower attachment point 32 of each insulating transverse crossarm 15 but at a third prefixed distance from the top portion 4, less than the second prefixed distance, in pair with a respective second bracket 23 constrained to the upper end 26 of a same insulating transverse crossarm 15.
  • the third brackets 24 are configured to extend overhanging from the top portion 4 with an overhang lower than that of the second brackets 23 and are formed by two angle elements 33, for example reticular or made as profiles, connected together at their first end 34, e.g. as the angle elements 27,28, and connected to the knots 18 of, respectively, the upper end 20 and the lower end 21 of a three-dimensional module 8, so as to form with it, in a front elevation view, a rectangular triangle.
  • two angle elements 33 for example reticular or made as profiles
  • brackets 23,24 having an overhang length greater than the brackets 22, allow the position of the lower insulating crossarm 15 (and consequently of the conductor 5 associated with it) to be offset laterally, allowing snow to fall more easily in mountain areas without overloading the conductors 5.
  • the fourth brackets 25 are also configured to be fixed to the lower attachment point 32 of each insulating transverse crossarm 15, but in pair with a respective first bracket 22 constrained to the upper end 26 of the same insulating transverse crossarm 15.
  • the fourth brackets 25 are made of elements shaped like a U arranged horizontally and facing the side opposite to the support 1, for example formed by a U-shaped profile 35, fixed to a corresponding knot 18 of the lower end 21 of the three-dimensional modules 8.
  • the uprights 36 and the transverse angles 20 , 21 , 37 forming the top portion 4 divided into the three- dimensional modules 8 are configured to be fixed in an integral way one with the other constrained between them and with the transverse crossarms 10 , 11 ( in a direct manner ) of the first set and with the insulating transverse crossarms 15 ( in an indirect manner ) of the second set through the knots 18 , for example made in a traditional manner with bolted metal plates .
  • the invention also extends to a method to reali ze a lattice tower for high-voltage overhead power lines having a lattice structure including a base 2 anchored to the ground and a body 3 ending, at the side opposite to the base 2 , with a top portion 4 designed to fasten respective conductors 5 of a high-voltage overhead electrical transmission line , comprising the following steps : reali zing a first truncated-pyramidal reticular structure 7 forming at least part of the body 3 ;
  • a second straight and parallelepiped-shaped reticular structure 38 overhanging the truncated-pyramidal body 7 and constituting almost all or all of the top portion 4 using four straight uprights 36 having a first fixed length, the straight uprights being configured to be connected to each other with a plurality of angles 20 , 21 and 37 arranged transversely to the uprights , and arranged to be fixed in a vertical direction V and parallel to each other on the first reticular structure 7 , so that the entire top portion 4 presents a prefixed recursive configuration forming a plurality of three-dimensional modules 8 identical to each other arranged sequentially in the vertical direction V; preferably, the number of modules 8 formed by the top portion 4 being smaller to reali ze a 66kV power line (by way of example ) and greater, so as to obtain a greater overall height of the top portion 4 , to reali ze a 132 - 150kV power line (by way of example ) ;
  • first set of transversal crossarms 10 , 11 made of reticular structure or a second set of insulating transverse crossarms 15 , the transversal crossarms of the first set being configured to selectively receive , at their first end 12 , opposite to the body, first insulator suspension set 13 or second insulator tension set 14 for the support of the conductors 5 ; and the insulating transverse crossarms 15 of the second set being configured to support at their first end 16 , opposite to the body, the conductors 5 ;
  • the transversal crossarms of the first and second set 10 , 11 or 15 being fixed on the top portion 4 at di f ferent heights and/or with di f ferent overhangs from the top portion, alternately or in pairs on both sides of the top portion, in order to selectively obtain a lattice tower for HV overhead power lines for di fferent rated voltage levels , rather than in Single-Circuit or Double-Circuit , as well as in plain or mountain configuration .
  • trans formation of the support in particular the trans formation of a 66kV SC tension support to a 150kV SC tension support , with plain and mountain crossarms .
  • the first operation includes dismantling the 66kV earth wire peak and replacing it with the new earth wire peak for 150kV voltage , also dismantling the body attachment plates .
  • the second operation includes dismantling the 66kV high, medium and low crossarms and in more detail the respective attachment plates ( knots 18 ) of the tie rods of the crossarms .
  • the 150kV high crossarm is placed and mounted one module 8 above where the 66kV voltage crossarm was located .
  • the plates for the attachment of the tie rods also act as a j oint for the earth wire peak .
  • the new attachment plate between the pole and the crossarm strut is also mounted .
  • the 150kV medium crossarm is placed and mounted in place of the 66kV medium crossarm .
  • Said 150kV medium crossarm includes new plates for tie rod attachment , which must replace the existing plates present on the body .
  • the 150kV low crossarm is placed and mounted in place of the 66kV low crossarm, replacing the existing tie rods attachment plates with the new tie rod attachment plates .
  • the existing bolts are replaced .
  • a fourth operation includes inserting the section rods at the level of the new high crossarm .
  • the first operation consists in dismantling the 66kV earth wire peak and replacing it with the new earth wire peak for 150 kV voltage .
  • the second operation includes dismantling the high, medium and low, 66kV crossarms , including the tie rod attachment plates ( knots 18 ) for the medium crossarm and low crossarm .
  • the tie rod plates for the high crossarm can remain in place .
  • a third operation concerns the 150kV high crossarm, which must be mounted two spans above where the high 66kV crossarm was located, whereas the 150kV medium crossarm must be mounted one span above the 66kV medium crossarm and the 150kV low crossarm must be mounted one span above the 66kV low crossarm .
  • the medium crossarm is supplied with new tie rod attachment plates which will have to replace the existing plates present on the body .
  • the old tie rod attachment plates for the 66kV cros sarm will need to be replaced with the new strut attachment plates for the new crossarm .
  • the fourth operation includes inserting the section rods at the level of the new medium and low crossarms .

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  • Suspension Of Electric Lines Or Cables (AREA)

Abstract

La présente invention concerne une tour en treillis pour lignes électriques aériennes à haute tension qui comprend une base ancrée au sol et un corps se terminant par une partie supérieure (4) conçue pour ancrer des conducteurs respectifs (5) d'une ligne électrique HT ; la partie supérieure (4) est composée d'un système modulaire (6) pour réaliser une structure réticulaire de forme parallélépipédique formée par au moins quatre montants droits et une pluralité d'angles agencés transversalement aux montants pour relier les montants entre eux en les fixant dans une direction verticale (V) et parallèles l'un à l'autre, de sorte que la partie supérieure (4) a une configuration récursive formant une pluralité de modules tridimensionnels (8) identiques les uns aux autres agencés séquentiellement dans la direction verticale (V) pour obtenir une tour en treillis de 66 kV et, avec l'ajout d'un module tridimensionnel indépendant supplémentaire, une tour en treillis 135/150 kV.
EP21839258.7A 2020-12-11 2021-12-10 Tour en treillis modulaire pour construire une ligne de transmission électrique aérienne à haute tension, avec agencement à usages multiples variable, son système modulaire et procédé de construction Pending EP4259893A1 (fr)

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IT202000030587 2020-12-11
PCT/IB2021/061573 WO2022123521A1 (fr) 2020-12-11 2021-12-10 Tour en treillis modulaire pour construire une ligne de transmission électrique aérienne à haute tension, avec agencement à usages multiples variable, son système modulaire et procédé de construction

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EP4259893A1 true EP4259893A1 (fr) 2023-10-18

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CN103452370B (zh) * 2012-10-25 2015-12-16 江苏神马电力股份有限公司 电网输电线用复合杆塔及其复合横担结构
CN104196303B (zh) * 2014-09-01 2019-01-08 江苏神马电力股份有限公司 输电塔
DE202015003670U1 (de) * 2015-05-22 2015-11-05 Cteam Consulting & Anlagenbau Gmbh Mast
CN106368495B (zh) * 2016-11-09 2018-09-07 国网浙江省电力公司绍兴供电公司 一种新型穿身直线窄基塔
CN107905614A (zh) * 2017-12-08 2018-04-13 国家电网公司 一种带避雷器的交流输电线路单回路直线塔
CN110566029A (zh) * 2019-08-26 2019-12-13 常州第一建筑集团有限公司 高耸钢塔架渐进式安装施工方法

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