Method for reducing deicing jump degree of overhead ground wire in mechanical deicing process
By determining the dividing point according to the gear distance during the mechanical deicing process of the overhead ground line, and obtaining the ice thickness and unevenness, the appropriate dividing point is selected as the deicing operation point, which solves the problem of deicing jump phenomenon and reduces the ground risk. Damage to lines and towers is eliminated, and operation and maintenance efficiency is improved.
Patent Information
- Application Number
- CN202411688669.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-25
- Publication Date
- 2025-01-24
AI Technical Summary
The prior art is difficult to effectively reduce the phenomenon of deicing and jumping during mechanical deicing of overhead ground wires, resulting in problems such as wear, deformation and fracture of ground wires.
By determining the dividing point according to the gear distance, the equivalent ice coating thickness and ice coating unevenness of the overhead ground line at the dividing point are obtained, the method of reducing the degree of deicing jump is determined, and the appropriate dividing point is selected as the mechanical deicing operation point.
It effectively reduces the degree of de-icing jump during mechanical de-icing of overhead ground wires, prevents wear, deformation and fracture of ground wires and towers, and improves the safety and efficiency of operation and maintenance.
Smart Images
Figure BDA0005150303740000041
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of deicing jump suppression in the mechanical deicing process of an overhead ground wire, and in particular relates to a method for reducing the deicing jump degree in the mechanical deicing process of an overhead ground wire. Background Art
[0002] At present, it is difficult to effectively de-ice overhead ground wires using anti-icing methods.
[0003] Mechanical deicing has a wide application prospect in overhead ground wires; however, the deicing jump phenomenon generated during mechanical deicing has not been well considered, and a corresponding suppression method has not been proposed. Therefore, it is necessary to provide a method to reduce the deicing jump during the mechanical deicing process of overhead ground wires. Summary of the invention
[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and to provide a method for reducing the degree of ice shedding jump during the mechanical deicing process of an overhead ground wire, thereby solving the problems in the above-mentioned background technology.
[0005] The object of the present invention is achieved as follows: a method for reducing the degree of de-icing jumps during the mechanical de-icing process of an overhead ground wire, comprising: a first step, determining a split point according to the gear span; a second step, obtaining the equivalent ice thickness of the overhead ground wire at the split point; a third step, obtaining the unevenness of ice coating on the overhead ground wire; and a fourth step, determining the degree of de-icing jumps during the mechanical de-icing process of the overhead ground wire according to the unevenness of ice coating on the overhead ground wire. The method created by the present invention can prevent mechanical damage such as wear, deformation, and fracture of the overhead ground wire itself and the pole tower caused by de-icing jumps caused by mechanical de-icing of the overhead ground wire.
[0006] Furthermore, the first step includes setting the split point to x i ,
[0007] If 0≤L≤500m, L represents the overhead ground wire span, δd represents the height difference, and the height difference is rounded down to obtain the segmentation factor x; if L>500m, the segmentation factor x is rounded down to l / 5, l represents the length of one overhead ground wire; the segmentation point x i Determine as follows:
[0008] 1) Take l / 2 as the starting point x0, extend x / 2 to the suspension points on both sides of the overhead ground wire, and get points x1 and x2 respectively, where x1 is on the left side of x0 and x2 is on the right side of x0;
[0009] 2) Take x1 as the starting point and move towards the left hanging point of the overhead ground wire, and divide all the line segments between x1 and the left hanging point of the overhead ground wire with x as the interval. Each division point is recorded as x. 2i+1 (i ≥ 1, and i ∈ N*);
[0010] 3) Take x2 as the starting point and move toward the right suspension point of the overhead ground wire, and divide all the line segments between x2 and the left suspension point of the overhead ground wire at intervals of x. Each division point is recorded as x. 2i (i≥1, and i∈N*).
[0011] The second step includes obtaining the segmentation point x i The equivalent ice thickness of the overhead ground wire at (i≥0, and i∈N) is calculated as d i (i≥0, and i∈N).
[0012] The third step includes setting the unevenness of ice coating on the overhead ground wire to η i , η i =d i / d0(i≥0, and i∈N).
[0013] The fourth step comprises selecting n i When the value is 1, the corresponding split point x0 is the first mechanical deicing operation point. i The values that are not 1 are arranged from large to small, and η is taken in the corresponding order. i Corresponding to the split point x i , choose the split point x i With x i-2 (If i-2<0, the value is zero) The midpoint is used as the deicing point for subsequent mechanical operations.
[0014] The beneficial effects of the present invention are as follows: preventing mechanical damage such as wear, deformation, and fracture of the overhead ground wire itself and the pole tower caused by mechanical deicing of the overhead ground wire, thereby facilitating front-line operation and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] none DETAILED DESCRIPTION
[0016] Example 1
[0017] This embodiment discloses a method for reducing the degree of de-icing jumps during the mechanical de-icing process of an overhead ground wire, which includes: a first step, determining a split point according to the gear span; a second step, obtaining the equivalent ice thickness of the overhead ground wire at the split point; a third step, obtaining the unevenness of ice coating on the overhead ground wire; and a fourth step, determining the degree of de-icing jumps during the mechanical de-icing process of the overhead ground wire according to the unevenness of ice coating on the overhead ground wire. The method created by the present invention can prevent mechanical damage such as wear, deformation, and fracture of the overhead ground wire itself and the tower caused by de-icing jumps caused by mechanical de-icing of the overhead ground wire.
[0018] Step 1: Determine the split point x according to the gear spacing i (i≥0, and i∈N):
[0019] If 0≤L≤500m, L represents the overhead ground wire span, δd represents the height difference, and the height difference is rounded down to obtain the segmentation factor x; if L>500m, the segmentation factor x is rounded down to l / 5, l represents the length of one overhead ground wire; the segmentation point x i Determine as follows:
[0020] 1) Take l / 2 as the starting point x0, extend x / 2 to the suspension points on both sides of the overhead ground wire, and get points x1 and x2 respectively, where x1 is on the left side of x0 and x2 is on the right side of x0;
[0021] 2) Take x1 as the starting point and move towards the left hanging point of the overhead ground wire, and divide all the line segments between x1 and the left hanging point of the overhead ground wire with x as the interval. Each division point is recorded as x. 2i+1 (i ≥ 1, and i ∈ N*);
[0022] 3) Take x2 as the starting point and move toward the right suspension point of the overhead ground wire, and divide all the line segments between x2 and the left suspension point of the overhead ground wire at intervals of x. Each division point is recorded as x. 2i (i ≥ 1, and i ∈ N*);
[0023] Step 2: Get the split point x i The equivalent ice thickness of the overhead ground wire at (i≥0, and i∈N) is calculated as d i (i ≥ 0, and i ∈ N);
[0024] Step 3: Obtaining the uneven ice coverage of overhead ground wires η i :
[0025] η i =d i / d0(i≥0, and i∈N)
[0026] Step 4: According to the uneven ice coverage of overhead ground wire η i Determine a method to reduce the degree of ice jump during the mechanical de-icing process of overhead ground wires:
[0027] 1) Select η i When it is 1, the corresponding split point x0 is the first mechanical deicing operation point;
[0028] 2) Set all η i The values that are not 1 are arranged from large to small, and η is taken in the corresponding order. i Corresponding to the split point x i , choose the split point x i With x i-2 (If i-2<0, its value is zero) The midpoint is used as the deicing point for subsequent mechanical operations.
[0029] Example 2
[0030] This embodiment discloses a method for reducing the degree of de-icing jumps during the mechanical de-icing process of an overhead ground wire, which includes: a first step, determining a split point according to the gear span; a second step, obtaining the equivalent ice thickness of the overhead ground wire at the split point; a third step, obtaining the unevenness of ice coating on the overhead ground wire; and a fourth step, determining the degree of de-icing jumps during the mechanical de-icing process of the overhead ground wire according to the unevenness of ice coating on the overhead ground wire. The method created by the present invention can prevent mechanical damage such as wear, deformation, and fracture of the overhead ground wire itself and the tower caused by de-icing jumps caused by mechanical de-icing of the overhead ground wire.
[0031] Take the electromagnetic pulse deicing of a GJ50 ice-covered ground line as an example:
[0032] Step 1: Determine the split point x according to the gear spacing i (i≥0, and i∈N):
[0033] The line span is 385m, the height difference is 25.3m, and the segmentation factor x is 25m;
[0034] 1) Take the starting point x0, which is 192.5m away from the suspension points on both sides, and extend 12.5m to the suspension points on both sides of the overhead ground wire to get points x1 and x2, where x1 is on the left side of x0 and x2 is on the right side of x0;
[0035] 2) Starting from x1 and heading towards the left hanging point of the overhead ground wire, divide all the line sections between x1 and the left hanging point of the overhead ground wire into equal parts at intervals of 25m, and count them as x1, x3, x5, x7, x9, x10, x11, x12, x13, x14, x15, x16, x17, x18, x19, x20, x21, x22, x23, x2 11 、x 13 ;
[0036] 3) Starting from x2, in the direction of the right suspension point of the overhead ground wire, all line sections between x1 and the left suspension point of the overhead ground wire are evenly divided at intervals of 25m, and counted as x2, x4, x6, x8, x9, x10, x11, x12, x13, x14, x15, x16, x17, x18, x19, x20, x30, x41, x50, x 10 、x 12 、x 14 ;
[0037] Step 2: Get the split point x i The equivalent ice thickness of the overhead ground wire at (i≥0, and i∈N) is calculated as d1~d 14 The calculation results are shown in Table 1;
[0038] Table 1d i With η i
[0039]
[0040] Step 3: Obtaining the uneven ice coverage of overhead ground wires η i , η i =d i / d0(i≥0, and i∈N), the calculation results are shown in Table 1;
[0041] Step 4: According to the uneven ice coverage of overhead ground wire η i Determine a method to reduce the degree of ice jump during the mechanical de-icing process of overhead ground wires:
[0042] The first mechanical deicing operation is selected at x0, the second operation is selected at the midpoint of x0 and x2; the third operation is selected at the midpoint of x0 and x1; the fourth operation is selected at the midpoint of x3 and x1; the fifth operation is selected at the midpoint of x2 and x4; the sixth operation is selected at the midpoint of x6 and x4; the seventh operation is selected at the midpoint of x5 and x3; the eighth operation is selected at the midpoint of x7 and x5; the ninth operation is selected at the midpoint of x8 and x6; the tenth operation is selected at the midpoint of x9 and x7; the eleventh operation is selected at x 10 and x8 midpoint; the eleventh assignment is at x 12 With x 10 Midpoint; The twelfth assignment is at x 11 and x9 midpoint; the thirteenth assignment is to choose 13 With x 11 Midpoint; The 14th assignment is at x 14 With x 12 At the midpoint.
[0043] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.
Claims
1. A method for reducing the degree of ice shedding jump during the mechanical deicing process of an overhead ground wire, characterized in that: include: The first step is to determine the split point according to the gear spacing; Step 2: Obtain the equivalent ice thickness of the overhead ground wire at the split point; Step 3: Obtain the uneven ice coverage of the overhead ground wire; Step 4: Determine the degree of ice shedding jump during the mechanical de-icing process of the overhead ground wire based on the uneven ice coverage of the overhead ground wire.
2. The method for reducing the degree of ice shedding jump during the mechanical deicing process of overhead ground wire according to claim 1 is characterized in that: The first step involves setting the split point to x i , If 0≤L≤500m, L represents the overhead ground wire span, δd represents the height difference, and the height difference is rounded down to obtain the segmentation factor x; if L>500m, the segmentation factor x is rounded down to l / 5, l represents the length of one overhead ground wire; the segmentation point x i Determine as follows: 1) Take l / 2 as the starting point x0, extend x / 2 to the suspension points on both sides of the overhead ground wire, and get points x1 and x2 respectively, where x1 is on the left side of x0 and x2 is on the right side of x0; 2) Take x1 as the starting point and move towards the left hanging point of the overhead ground wire, and divide all the line segments between x1 and the left hanging point of the overhead ground wire with x as the interval. Each division point is recorded as x. 2i+1 (i ≥ 1, and i ∈ N*); 3) Take x2 as the starting point and move towards the right suspension point of the overhead ground wire, and divide all the line segments between x2 and the left suspension point of the overhead ground wire with x as the interval. Each division point is recorded as x. 2i (i≥1, and i∈N*).
3. The method for reducing the degree of ice shedding jump during the mechanical deicing process of overhead ground wire according to claim 2 is characterized in that: The second step includes obtaining the segmentation point x i The equivalent ice thickness of the overhead ground wire at (i≥0, and i∈N) is calculated as d i (i≥0, and i∈N).
4. The method for reducing the degree of ice shedding jump during the mechanical deicing process of overhead ground wire according to claim 3 is characterized in that: The third step includes setting the unevenness of ice coating on the overhead ground wire to η i , η i =d i / d0(i≥0, and i∈N).
5. The method for reducing the degree of ice shedding jump during the mechanical deicing process of overhead ground wire according to claim 4, characterized in that: The fourth step comprises selecting n i When the value is 1, the corresponding split point x0 is the first mechanical deicing operation point. i The values that are not 1 are arranged from large to small, and η is taken in the corresponding order. i Corresponding to the split point x i , choose the split point x i With x i-2 (If i-2<0, the value is zero) The midpoint is used as the deicing point for subsequent mechanical operations.