CN113252277B - Mechanical response test device and test method for substation downlead simulating wind load - Google Patents
Mechanical response test device and test method for substation downlead simulating wind load Download PDFInfo
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- CN113252277B CN113252277B CN202110567021.1A CN202110567021A CN113252277B CN 113252277 B CN113252277 B CN 113252277B CN 202110567021 A CN202110567021 A CN 202110567021A CN 113252277 B CN113252277 B CN 113252277B
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- downlead
- lead
- steel wire
- frame
- fixed pulley
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- 238000012360 testing method Methods 0.000 title claims abstract description 21
- 238000010998 test method Methods 0.000 title claims abstract description 8
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 26
- 239000010959 steel Substances 0.000 claims abstract description 26
- 238000009434 installation Methods 0.000 claims abstract description 13
- 230000000149 penetrating effect Effects 0.000 claims description 8
- 238000000034 method Methods 0.000 claims 1
- 239000004020 conductor Substances 0.000 abstract description 20
- 238000013461 design Methods 0.000 abstract description 6
- 238000004088 simulation Methods 0.000 abstract description 4
- 238000011156 evaluation Methods 0.000 abstract description 3
- 238000005457 optimization Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/16—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge
- G01B7/18—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge using change in resistance
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
- G01L1/22—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
- G01M9/06—Measuring arrangements specially adapted for aerodynamic testing
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The invention discloses a mechanical response test device and a mechanical response test method for a down conductor of a transformer substation for simulating wind load, and provides reference test data for simulation test for the optimization design or the evaluation of operation stability of the down conductor. Simulating an in-station span of a transformer substation by using a down-lead upper end hanging plate on a gantry hanging frame beam, simulating a high-voltage equipment terminal plate by using a down-lead lower end hanging plate connected to a ground anchor plate, and connecting the down-lead between the down-lead upper end hanging plate and the down-lead lower end hanging plate; the front side of the gantry hanging frame is provided with a fixed pulley installation ladder-shaped vertical frame, fixed pulleys are arranged on each step of cross beams of the fixed pulley installation ladder-shaped vertical frame, steel wire cable clamps are arranged on the down-lead wires at intervals, one end of each steel wire cable is connected with each steel wire cable clamp, and the other end of each steel wire cable is connected with a hollow cylinder weight through the fixed pulley on the fixed pulley installation ladder-shaped vertical frame; and (3) equivalent simulation wind load by using a hollow cylinder weight, and reading the degree of a resistance strain gauge stuck on the down lead, thereby obtaining test data.
Description
Technical Field
The invention relates to a test device, in particular to a mechanical response test device and a test method for a down conductor of a transformer substation for simulating wind load.
Background
In the transformer substation engineering, a down conductor system of primary equipment of a transformer substation is an indispensable important component part in the transformer substation; the down-lead system comprises a T-shaped wire clamp, a connecting wire, a spacer, an equipment wire clamp and a high-voltage equipment wiring terminal board; the in-station cross wire is connected with the down wire through a T-shaped wire clamp, the other end of the down wire is connected with a high-voltage equipment wiring terminal board through an equipment wire clamp, the high-voltage equipment terminal board is arranged at the top end of a high-voltage sleeve and seals the top end of the high-voltage sleeve, a conductor is arranged in the sealed high-voltage sleeve, the upper end of the conductor is electrically connected with the high-voltage equipment terminal board, the lower end of the conductor is electrically connected with a high-voltage equipment body, and insulating gas or insulating oil is filled in the sealed high-voltage sleeve to play a role in insulation; when the overall structure of the down conductor system is unreasonable, under the action of outdoor wind load and device offset load, the down conductor system can generate larger stress on the terminal board of the high-voltage equipment, so that the terminal board is damaged or broken, the sealing of the high-voltage sleeve is invalid, the insulation performance is lost, and the equipment is faulty, thereby bringing hidden danger to the working safety and the power supply reliability of the system.
At present, in the design of an electrical primary system of a transformer substation, the structure of a down-lead system is designed according to the stress bearing capacity of a high-voltage terminal board, but no related stress calculation formula exists at present, the design is generally carried out by adopting a design experience value, the error of stress estimation is larger, and the stress condition of a terminal of high-voltage equipment cannot be comprehensively and truly reflected, so that the down-lead system mechanical test device capable of simulating the load effect and the assembly offset working condition is designed, and has good reference value for the down-lead optimization design and the operation stability evaluation.
Disclosure of Invention
The invention provides a mechanical response test device and a mechanical response test method for a down conductor of a transformer substation for simulating wind load, and provides reference test data for simulation test for the optimization design or the evaluation of operation stability of the down conductor.
The invention solves the technical problems by the following technical proposal:
The general conception of the invention is that: simulating an in-station span of a transformer substation by using a down-lead upper end hanging plate on a gantry hanging frame beam, simulating a high-voltage equipment terminal plate by using a down-lead lower end hanging plate connected to a ground anchor plate, and connecting the down-lead between the down-lead upper end hanging plate and the down-lead lower end hanging plate; the front side of the gantry hanging frame is provided with a fixed pulley installation ladder-shaped vertical frame, fixed pulleys are arranged on each step of cross beams of the fixed pulley installation ladder-shaped vertical frame, steel wire cable clamps are arranged on the down-lead wires at intervals, one end of each steel wire cable is connected with each steel wire cable clamp, and the other end of each steel wire cable is connected with a hollow cylinder weight through the fixed pulley on the fixed pulley installation ladder-shaped vertical frame; and (3) equivalent simulation wind load by using a hollow cylinder weight, and reading the degree of a resistance strain gauge stuck on the down lead, thereby obtaining test data.
The utility model provides a simulated wind load's transformer substation downlead mechanics response test device, including the longmen stores pylon, the fixed pulley installs trapezoidal grudging post, the downlead, be provided with frame-type box crossbeam on the longmen stores pylon, on the ground below the frame-type box crossbeam, fixedly provided with ground anchor plate, the fixed pulley installs trapezoidal grudging post and fixedly provided with the front side of longmen stores pylon, it has the resistance strain gauge to paste on the downlead, be connected with the downlead upper end link in lower bottom surface central authorities of frame-type box crossbeam, be connected with the downlead upper terminal block on the downlead upper terminal block, be connected with the downlead on the downlead upper terminal block, the lower extreme of downlead is connected with the downlead lower terminal block, be connected with the downlead lower terminal link on the downlead lower terminal block, the downlead lower terminal link is connected on ground anchor plate; the down-lead traction frame is arranged on the down-lead at intervals, the fixed pulley is arranged on the step cross beam of the fixed pulley installation ladder-shaped vertical frame, one end of the steel wire inhaul cable is connected to the down-lead traction frame, and the other end of the steel wire inhaul cable is connected with the hollow cylinder weight through the fixed pulley.
The down-lead traction frame is composed of a front strip clamping plate and a rear strip clamping plate, the front strip clamping plate is connected with the rear strip clamping plate through two clamping plate fastening bolts, a pair of steel wire rope penetrating holes are formed in the front strip clamping plate and the rear strip clamping plate, and the end parts of the steel wire ropes are connected with the wire clamps after penetrating through the pair of steel wire rope penetrating holes in sequence.
A test method of a mechanical response test device for a down conductor of a transformer substation for simulating wind load is characterized in that distributed wind load is converted into a plurality of equivalent concentrated loads, the plurality of equivalent concentrated loads are replaced by hollow cylinder weights, wind loads borne by different parts of the down conductor are reflected by the hollow cylinder weights connected with steel wire inhaul cables on a down conductor traction frame corresponding to the corresponding parts; and reading the degree of the resistance strain gauge stuck on the down conductor.
The test device is efficient and quick to operate, high in measurement accuracy, and can be used for testing mechanical characteristics and deformation rules of assembly deviations of various transformer substation downlead systems.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
fig. 2 is a schematic structural view of the down conductor traction frame 8 of the present invention;
Fig. 3 is a diagram showing a connection relationship between the down-lead upper end hanging plate 3 and the down-lead lower terminal plate 7 of the present invention;
fig. 4 is a schematic structural view of the hollow cylinder weight 13 of the present invention;
fig. 5 is a schematic view of the structure of the wire clamp 19 of the present invention.
Detailed Description
The invention is described in detail below with reference to the attached drawing figures:
The utility model provides a simulated wind load's transformer substation downlead mechanics response test device, including longmen stores pylon 1, fixed pulley installation trapezoidal grudging post 10, downlead 14, be provided with frame type box crossbeam 2 on longmen stores pylon 1, on the ground of frame type box crossbeam 2 below, fixedly provided with ground anchor board 4, fixed pulley installation trapezoidal grudging post 10 is fixed to the front side of longmen stores pylon 1, paste the resistance strain gauge on downlead 14, be connected with downlead upper end link 3 in the lower bottom surface central authorities of frame type box crossbeam 2, be connected with downlead upper terminal board 6 on downlead upper end link 3, be connected with downlead 14 on downlead upper terminal board 6, the lower extreme of downlead 14 is connected with downlead lower terminal board 7, be connected with downlead lower terminal link 5 on downlead lower terminal board 7, downlead lower terminal link 5 is connected on ground anchor board 4; the down-lead traction frame 8 is arranged on the down-lead 14 at intervals, the fixed pulley 12 is arranged on the step cross beam 11 of the fixed pulley installation ladder-shaped vertical frame 10, one end of the steel wire guy rope 9 is connected to the down-lead traction frame 8, and the other end of the steel wire guy rope 9 is connected with the hollow cylinder weight 13 after passing through the fixed pulley 12.
The down-lead traction frame 8 is composed of a front strip clamping plate 15 and a rear strip clamping plate 18, the front strip clamping plate 15 and the rear strip clamping plate 18 are connected together through two clamping plate fastening bolts 16, a pair of steel wire rope penetrating holes 17 are formed in the front strip clamping plate 15 and the rear strip clamping plate 18, and the end parts of the steel wire ropes 9 are connected with a wire clamp 19 after penetrating through the pair of steel wire rope penetrating holes 17 in sequence.
The test method of the mechanical response test device of the down conductor of the transformer substation for simulating wind load is characterized in that the distributed wind load is converted into a plurality of equivalent concentrated loads, the plurality of equivalent concentrated loads are replaced by hollow cylinder weights 13, the wind loads born by different parts of the down conductor 14 are reflected by the hollow cylinder weights 13 connected with the steel wire inhaul cables 9 on the down conductor traction frame 8 corresponding to the corresponding parts; the degree of the resistance strain gauge stuck on the down conductor 14 is read.
Claims (1)
1. The test method of the mechanical response test device of the transformer substation downlead simulating wind load is carried out by the mechanical response test device of the transformer substation downlead simulating wind load, and comprises a gantry hanging frame (1), a fixed pulley installation ladder-shaped stand (10) and a downlead (14), wherein a frame-type box-shaped beam (2) is arranged on the gantry hanging frame (1), a ground anchor plate (4) is fixedly arranged on the ground below the frame-type box-shaped beam (2), a fixed pulley installation ladder-shaped stand (10) is fixedly arranged on the front side of the gantry hanging frame (1), a resistance strain gauge is stuck on the downlead (14), a downlead upper end hanging plate (3) is connected to the center of the lower bottom surface of the frame-type box-shaped beam (2), a downlead upper terminal plate (6) is connected to the downlead upper terminal plate (6), a downlead lower terminal plate (7) is connected to the lower end of the downlead (14), and a downlead upper terminal plate (7) is connected to the lower terminal plate (5) and the downlead lower terminal plate (5) is connected to the lower terminal plate (5); the down-lead traction frame (8) is arranged on the down-lead (14) at intervals, the fixed pulley (12) is arranged on the step cross beam (11) of the fixed pulley installation ladder-shaped vertical frame (10), one end of the steel wire guy cable (9) is connected to the down-lead traction frame (8), and the other end of the steel wire guy cable (9) is connected with the hollow cylinder weight (13) through the fixed pulley (12); the down-lead traction frame (8) consists of a front strip clamping plate (15) and a rear strip clamping plate (18), wherein the front strip clamping plate (15) and the rear strip clamping plate (18) are connected together through two clamping plate fastening bolts (16), a pair of steel wire inhaul cable penetrating holes (17) are formed in each of the front strip clamping plate (15) and the rear strip clamping plate (18), and the end parts of the steel wire inhaul cables (9) are sequentially penetrated through the pair of steel wire inhaul cable penetrating holes (17) and then connected with the wire clamps (19); the method is characterized in that distributed wind load is converted into a plurality of equivalent concentrated loads, the equivalent concentrated loads are replaced by hollow cylinder weights (13), wind loads borne by different parts of a down-lead wire (14) are reflected by the hollow cylinder weights (13) connected with steel wire inhaul cables (9) on a down-lead wire traction frame (8) corresponding to the corresponding parts; and reading the degree of the resistance strain gauge stuck on the down lead (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110567021.1A CN113252277B (en) | 2021-05-24 | 2021-05-24 | Mechanical response test device and test method for substation downlead simulating wind load |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110567021.1A CN113252277B (en) | 2021-05-24 | 2021-05-24 | Mechanical response test device and test method for substation downlead simulating wind load |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113252277A CN113252277A (en) | 2021-08-13 |
| CN113252277B true CN113252277B (en) | 2024-06-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110567021.1A Active CN113252277B (en) | 2021-05-24 | 2021-05-24 | Mechanical response test device and test method for substation downlead simulating wind load |
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| CN (1) | CN113252277B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114370989A (en) * | 2021-12-29 | 2022-04-19 | 中船重工中南装备有限责任公司 | Device for simulating uniform wind load distribution and using method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN215262332U (en) * | 2021-05-24 | 2021-12-21 | 中国能源建设集团山西省电力勘测设计院有限公司 | Mechanical response test device for transformer substation down lead capable of simulating wind load |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB590707A (en) * | 1945-01-03 | 1947-07-25 | Boulton Aircraft Ltd | Improvements in and relating to apparatus for determining stresses produced in aircraft by aerodynamic loads sustained during flight |
| RU2096882C1 (en) * | 1995-11-17 | 1997-11-20 | Георгий Викторович Подпоркин | Power transmission line with pulse lightning arrester |
| FI107193B (en) * | 1999-06-03 | 2001-06-15 | Rouvari Oy R | Measuring probe |
| CN102305683B (en) * | 2011-07-25 | 2012-11-14 | 国家电网公司 | Method and system for determining load of upper hanging points on downlead in substation |
| JP2014007902A (en) * | 2012-06-26 | 2014-01-16 | Chugoku Electric Power Co Inc:The | High voltage drop wire edge line support |
| CN111829702A (en) * | 2019-04-18 | 2020-10-27 | 中国电力科学研究院有限公司 | Method and device for measuring wind load acting force of connecting hardware fitting at lower end of down lead |
| CN110752570B (en) * | 2019-10-30 | 2024-06-25 | 中国能源建设集团山西省电力勘测设计院有限公司 | Inlet wire structure of 500kV transformer substation with extremely small inlet wire span |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN215262332U (en) * | 2021-05-24 | 2021-12-21 | 中国能源建设集团山西省电力勘测设计院有限公司 | Mechanical response test device for transformer substation down lead capable of simulating wind load |
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| CN113252277A (en) | 2021-08-13 |
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