Short-term and long-term combined electric iron tower building method

Abstract

The invention belongs to the field of electric power, and particularly relates to a short-term and long-term combined electric power iron tower building method, a strain iron tower is newly built in the early stage of short-term relocation and transformation, the strain iron tower is provided with multiple layers of cross arms, each layer of cross arms comprises two short-term wire lapping cross arms and long-term wire lapping cross arms, the short-term wire lapping cross arms and the long-term wire lapping cross arms are arranged in a crossed mode, and the short-term wire lapping cross arms and the long-term wire lapping cross arms are arranged in a staggered mode. During long-term relocation and reformation, a new tower is not needed, and butt joint and fire connection with an original line are directly carried out. According to the short-term and long-term combined electric iron tower building method, short-term switching and long-term reconstruction schemes of transformer substation lines are combined, repeated utilization of the towers of the lines under construction is considered, repeated tower erecting is avoided, related procedures of planning departments are reduced, and the construction period is shortened.

Description

Technical Field

[0001] The invention belongs to the electric power field, and in particular is a method for building an electric power tower combining short-term and long-term development. Background Art

[0002] As the economy continues to grow, there are more and more large-scale power grid projects. Some old substations can no longer meet the current needs of electricity growth. More and more old substations are being rebuilt in other places. At the same time, the station lines need to be relocated due to other projects. It is becoming increasingly difficult to coordinate the planning of the relocation work.

[0003] Most of the existing relocation methods are to select the entrance route of the new station, then interrupt the original line, and connect the new terminal tower with the old line. The advantages of this method are: conventional and simple; the disadvantages are: the station entrance lines are dense, the tower position is difficult to select, and the formalities and construction time are long. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a method for building a power tower that combines the short-term and long-term plans. The method combines the short-term switching and long-term reconstruction plans of substation lines, considers the reuse of pole towers under construction, avoids repeated tower erection, reduces relevant procedures of planning departments, and shortens the construction period.

[0005] The technical solution adopted by the present invention to solve the technical problem is:

[0006] The present invention provides a method for building an electric power tower combining short-term and long-term relocation. In the initial stage of short-term relocation, a new tension tower is built. The tension tower has multiple layers of cross arms, and each layer has two cross arms, which are short-term wiring cross arms and long-term wiring cross arms. The short-term wiring cross arms and long-term wiring cross arms are cross-arranged. In the long-term relocation, there is no need to build a new pole tower, and it can be directly connected to the original line for wiring.

[0007] Furthermore, the specific steps are:

[0008] Step 1: Select the location of the new terminal tower based on the short-term and long-term relocation path plans and the long-term planning location;

[0009] Step 2: Determine the target tower height, single-line diagram and specific installation angle;

[0010] Step 3: The target tower is assembled according to the four-sided crossarms, and the lines are hung according to the tower diagram. The lines are hung first according to the short-term cutting and modification path. After the substation is rebuilt at a different location, the overhead lines will be hung according to the long-term path.

[0011] Furthermore, the design wind speed and creepage distance are selected according to the wind speed, icing, dancing and pollution level in the line cutting area, and then the relevant parameters of the overhead conductor model, tension string model and insulator are calculated.

[0012] Furthermore, tower calculation software is used to calculate the jumper clearance to meet the requirements of strong winds, live working, wiring, internal overvoltage, and external overvoltage.

[0013] The advantages and positive effects of the present invention are:

[0014] The short-term and long-term combined power tower construction method of the present invention combines the short-term switching and long-term reconstruction plan of the substation line, considers the reuse of the line towers under construction, avoids repeated tower erection, reduces the relevant procedures of the planning department, and shortens the construction period. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the recent switching path position of the present invention;

[0016] Figure 2 This is a schematic diagram of the long-term cutting path position of the present invention;

[0017] Figure 3 This is a schematic diagram of the recent tower wiring of the present invention;

[0018] Figure 4 This is a schematic diagram of the long-term pole tower hanging line of the present invention. DETAILED DESCRIPTION

[0019] The present invention is further described in detail below through specific examples. The following examples are only illustrative and not restrictive, and the protection scope of the present invention cannot be limited thereto.

[0020] like Figure 1-Figure 4 As shown, the present invention proposes a method for erecting a power tower combining short-term and long-term plans. In the initial stage of short-term relocation, a new tension tower is built. The tension tower has multiple layers of cross arms, and each layer has two cross arms, which are short-term wiring cross arms and long-term wiring cross arms. The short-term wiring cross arms and long-term wiring cross arms are cross-arranged. In the long-term relocation, there is no need to build a new pole tower, and it can be directly connected to the original line for wiring.

[0021] The specific steps of the short-term and long-term combined power tower construction method of the present invention are:

[0022] Step 1: Select the location of the new terminal tower based on the short-term and long-term relocation path plans and the long-term planning location;

[0023] Step 2: Determine the target tower height, single-line diagram and specific installation angle;

[0024] Step 3: The target tower is assembled according to the four-sided crossarms, and the lines are hung according to the tower diagram. The lines are hung first according to the short-term cutting and modification path. After the substation is rebuilt at a different location, the overhead lines will be hung according to the long-term path.

[0025] Among them, the design wind speed and creepage distance are selected according to the wind speed, icing, dancing, and pollution level in the line cutting area, and then the relevant parameters of the overhead conductor model, tension string model, and insulator are calculated. The tower calculation software is used to calculate the jumper gap to meet the requirements of strong winds, live work, wiring, internal overvoltage, and external overvoltage.

[0026] like Figure 1 As shown, it is a schematic diagram of the position of the recent switching path of the present invention, and the green line represents the recent switching path.

[0027] like Figure 2 As shown, it is a schematic diagram of the position of the long-term switching path of the present invention, the blue line represents the long-term switching path, and the intersection of the long-term switching path and the short-term switching path is the tower setting point.

[0028] like Figure 3 As shown, it is a schematic diagram of the near-term pole tower hanging line of the present invention, which is hung on the near-term hanging line cross arm of the iron scaffolding.

[0029] like Figure 4 As shown, it is a schematic diagram of the future pole tower hanging line of the present invention, which is hung on the future hanging line cross arm of the iron rack.

[0030] The short-term and long-term combined power tower construction method of the present invention combines the short-term switching and long-term reconstruction plan of the substation line, considers the reuse of the line towers under construction, avoids repeated tower erection, reduces the relevant procedures of the planning department, and shortens the construction period.

[0031] The above description is only a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several modifications and improvements without departing from the inventive concept, which all belong to the protection scope of the present invention.

Claims

1. A method for building a power tower combining short-term and long-term development, characterized in that: In the early stage of the recent relocation, a new tension tower is built. The tension tower has multiple layers of cross arms. Each layer has two cross arms, which are the recent wiring cross arms and the long-term wiring cross arms. The recent wiring cross arms and the long-term wiring cross arms are cross-arranged. In the long-term relocation, there is no need to build a new pole tower and it can be directly connected to the original line for heating.

2. The method for building a power tower combining short-term and long-term development according to claim 1, characterized in that: The specific steps are: Step 1: Select the location of the new terminal tower based on the short-term and long-term relocation path plans and the long-term planning location; Step 2: Determine the target tower height, single-line diagram and specific installation angle; Step 3: The target tower is assembled according to the four-sided crossarms, and the lines are hung according to the tower diagram. The lines are hung first according to the short-term cutting and modification path. After the substation is rebuilt at a different location, the overhead lines will be hung according to the long-term path.

3. The method for building a power tower combining short-term and long-term development according to claim 2 is characterized in that: The design wind speed and creepage distance are selected according to the wind speed, icing, dancing and pollution level in the line cutting and modification area, and then the relevant parameters of the overhead conductor model, tension string model and insulator are calculated.

4. The method for building a power tower combining short-term and long-term construction according to claim 2, characterized in that: Using the tower calculation software, the jumper clearance is calculated to meet the requirements of strong winds, live working, wiring, internal overvoltage, and external overvoltage.

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