CN113252277A - Mechanical response test device and method for transformer substation down lead capable of simulating wind load - Google Patents
Mechanical response test device and method for transformer substation down lead capable of simulating wind load Download PDFInfo
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- CN113252277A CN113252277A CN202110567021.1A CN202110567021A CN113252277A CN 113252277 A CN113252277 A CN 113252277A CN 202110567021 A CN202110567021 A CN 202110567021A CN 113252277 A CN113252277 A CN 113252277A
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- downlead
- steel wire
- down lead
- fixed pulley
- hanging plate
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- 238000012360 testing method Methods 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title description 2
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 26
- 239000010959 steel Substances 0.000 claims abstract description 26
- 239000004020 conductor Substances 0.000 claims abstract description 21
- 238000009434 installation Methods 0.000 claims abstract description 15
- 238000010998 test method Methods 0.000 claims abstract description 6
- 238000004088 simulation Methods 0.000 claims abstract description 3
- 238000013461 design Methods 0.000 abstract description 6
- 238000011156 evaluation Methods 0.000 abstract description 3
- 238000005457 optimization Methods 0.000 abstract description 2
- 238000004364 calculation method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
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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
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- 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 transformer substation down lead for simulating wind load, and provides a simulation test reference test data for the optimization design or the evaluation of the operation stability of the down lead. Simulating an in-station span line of a transformer substation by using a down conductor upper end hanging plate on a gantry hanging rack cross beam, simulating a high-voltage equipment terminal plate by using a down conductor lower end hanging plate connected to an earth anchor plate, and connecting a down conductor between the down conductor upper end hanging plate and the down conductor 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 beam of the fixed pulley installation ladder-shaped vertical frame, steel wire cable clamps are arranged on a down lead at intervals, one end of a steel wire cable is connected with the steel wire cable clamps, and the other end of the 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) equivalently simulating the wind load by using a hollow cylinder weight, and reading the degree of the resistance strain gauge adhered to the down lead so as to obtain 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 transformer substation down lead capable of simulating wind load.
Background
In a transformer substation project, a down lead system of primary equipment of a transformer substation is an indispensable important component 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 terminal board; the in-station crossover wire is connected with the down lead through a T-shaped wire clamp, the other end of the down lead is connected with a high-voltage equipment terminal board through an equipment wire clamp, the high-voltage equipment terminal board is arranged at the top end of the 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 the high-voltage equipment body, and the sealed high-voltage sleeve is filled with insulating gas or insulating oil to play an insulating role; when the overall structure of the down-lead system is unreasonable, the down-lead system generates large stress on the terminal board of the high-voltage equipment under the action of outdoor wind load and device offset load, so that the terminal board of the high-voltage equipment is damaged or broken, the high-voltage bushing is sealed and fails, the insulating property and equipment failure are lost, and hidden dangers are brought 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 conductor system is designed according to the stress bearing capacity of a high-voltage terminal board, but no related stress calculation formula exists at present, a design experience value is generally adopted for estimation in the design, the error of stress estimation is large, and the stress condition of a high-voltage equipment terminal cannot be comprehensively and truly reflected, so that a down conductor system mechanical test device capable of simulating the load action and the assembly deviation working condition is designed, and the down conductor optimal design and the operation stability evaluation have a good reference value.
Disclosure of Invention
The invention provides a mechanical response test device and a mechanical response test method for a transformer substation down lead for simulating wind load, and provides a simulation test reference test data for the optimization design or the evaluation of operation stability of the down lead.
The invention solves the technical problems by the following technical scheme:
the general concept of the invention is: simulating an in-station span line of a transformer substation by using a down conductor upper end hanging plate on a gantry hanging rack cross beam, simulating a high-voltage equipment terminal plate by using a down conductor lower end hanging plate connected to an earth anchor plate, and connecting a down conductor between the down conductor upper end hanging plate and the down conductor 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 beam of the fixed pulley installation ladder-shaped vertical frame, steel wire cable clamps are arranged on a down lead at intervals, one end of a steel wire cable is connected with the steel wire cable clamps, and the other end of the 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) equivalently simulating the wind load by using a hollow cylinder weight, and reading the degree of the resistance strain gauge adhered to the down lead so as to obtain test data.
A mechanical response test device for a transformer substation downlead simulating wind load comprises a gantry hanger, a fixed pulley installation trapezoidal vertical frame and a downlead, wherein a frame type box-shaped beam is arranged on the gantry hanger, a ground anchor plate is fixedly arranged on the ground below the frame type box-shaped beam, the fixed pulley installation trapezoidal vertical frame is fixedly arranged on the front side of the gantry hanger, a resistance strain gauge is pasted on the downlead, a downlead upper end hanging plate is connected to the center of the lower bottom surface of the frame type box-shaped beam, a downlead upper end sub-plate is connected to the downlead upper end hanging plate, the downlead upper end sub-plate is connected with the downlead, the lower end of the downlead is connected with a downlead lower end sub-plate, the downlead lower end hanging plate is connected to the downlead lower end hanging plate, and the lower end of the downlead is connected to the ground anchor plate; the down lead is provided with down lead traction frames at intervals, the fixed pulleys are arranged on the step beam of the fixed pulley installation trapezoidal vertical frame, one end of the steel wire inhaul cable is connected to the down lead traction frames, and the other end of the steel wire inhaul cable is connected with the hollow cylindrical weights through the fixed pulleys.
The downlead traction frame comprises preceding rectangular splint and the rectangular splint in back, and preceding rectangular splint link together through two splint fastening bolt with the rectangular splint in back, and rectangular splint all are provided with a pair of steel wire cable and pass the hole in the front with the rectangular splint in back, and steel wire cable's tip links together with the fastener after passing through the hole from a pair of steel wire cable in proper order.
A test method of a mechanical response test device of a transformer substation down lead for simulating wind load is characterized in that distributed wind load is converted into a plurality of equivalent concentrated loads, the equivalent concentrated loads are replaced by hollow cylindrical weights, and wind loads borne by different parts of the down lead are reflected by the hollow cylindrical weights connected with steel wire inhaul cables on a down lead traction frame corresponding to the corresponding parts; and reading the degree of the resistance strain gauge stuck on the down lead.
The testing device is efficient and rapid in operation and high in measurement accuracy, and can be used for testing the mechanical characteristics and the deformation rule of the assembly deviation of various transformer substation down-lead systems.
Drawings
FIG. 1 is a schematic structural view 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 connection relation diagram between the lower terminal plate 7 and the lower end hanging plate 3 of the down conductor of the invention;
FIG. 4 is a schematic view of the structure of the hollow cylindrical weight 13 of the present invention;
fig. 5 is a schematic structural view of the wire clamp 19 of the present invention.
Detailed Description
The invention is described in detail below with reference to the accompanying drawings:
a mechanical response test device for a transformer substation down lead simulating wind load comprises a gantry hanging frame 1, a fixed pulley installation trapezoidal vertical frame 10 and a down lead 14, 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 trapezoidal vertical frame 10 is fixedly arranged on the front side of the gantry hanging frame 1, a resistance strain gauge is stuck on the down lead 14, the middle of the lower bottom surface of the frame type box-shaped beam 2 is connected with a down lead upper end hanging plate 3, the upper end sub-plate 6 of the down lead is connected to the upper end hanging plate 3 of the down lead, the down lead 14 is connected to the upper end sub-plate 6 of the down lead, the lower end of the down lead 14 is connected to the lower end sub-plate 7 of the down lead, the lower end sub-plate 7 of the down lead is connected to the lower end hanging plate 5 of the down lead, and the lower end hanging plate 5 of the down lead is connected to the ground anchor plate 4; the down lead 14 is provided with down lead traction frames 8 at intervals, the step beam 11 of the fixed pulley installation trapezoidal vertical frame 10 is provided with a fixed pulley 12, one end of a steel wire inhaul cable 9 is connected to the down lead traction frames 8, and the other end of the steel wire inhaul cable 9 is connected with a hollow cylinder weight 13 after passing through the fixed pulley 12.
The downlead traction frame 8 comprises preceding rectangular splint 15 and the rectangular splint 18 in back, and preceding rectangular splint 15 links together through two splint fastening bolt 16 with the rectangular splint 18 in back, and rectangular splint 15 all is provided with a pair of steel wire cable and passes hole 17 in the front with the rectangular splint 18 in back, and the tip of steel wire cable 9 links together with fastener 19 after passing hole 17 from a pair of steel wire cable in proper order.
A test method of a mechanical response test device of a transformer substation down lead for simulating wind load is characterized in that distributed wind load is converted into a plurality of equivalent concentrated loads, the equivalent concentrated loads are replaced by hollow cylindrical weights 13, wind loads borne by different parts of a down lead 14 are reflected by the hollow cylindrical weights 13 connected with steel wire inhaul cables 9 on a down lead traction frame 8 corresponding to the corresponding parts; the degree of the resistance gauge attached to the down lead 14 is read.
Claims (3)
1. A mechanical response test device for a transformer substation downlead simulating wind load comprises a gantry hanger (1), a fixed pulley installation trapezoidal vertical frame (10) and a downlead (14), wherein a frame-type box-shaped beam (2) is arranged on the gantry hanger (1), a ground anchor plate (4) is fixedly arranged on the ground below the frame-type box-shaped beam (2), the fixed pulley installation trapezoidal vertical frame (10) is fixedly arranged on the front side of the gantry hanger (1), a resistance strain gauge is adhered on the downlead (14), the mechanical response test device is characterized in that 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 end hanging plate (6) is connected to the downlead upper end hanging plate (3), the downlead (14) is connected to the downlead upper end hanging plate (6), and the lower end of the downlead (14) is connected to the downlead lower end (7), the lower end sub-plate (7) of the down lead is connected with a lower end hanging plate (5) of the down lead, and the lower end hanging plate (5) of the down lead is connected with the ground anchor plate (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 beam (11) of the fixed pulley installation trapezoidal vertical frame (10), one end of the steel wire inhaul cable (9) is connected to the down lead traction frame (8), and the other end of the steel wire inhaul cable (9) is connected with the hollow cylindrical weight (13) after passing through the fixed pulley (12).
2. The mechanical response test device of transformer substation downlead of simulation wind load of claim 1, characterized in that, downlead traction frame (8) comprises preceding rectangular splint (15) and back rectangular splint (18), preceding rectangular splint (15) link together through two splint fastening bolts (16) with back rectangular splint (18), preceding rectangular splint (15) and back rectangular splint (18) all are provided with a pair of steel wire cable and pass hole (17), the tip of steel wire cable (9) links together with fastener (19) after passing through hole (17) from a pair of steel wire cable in proper order.
3. The test method of the mechanical response test device for the down conductor of the transformer substation simulating the wind load is characterized in that the distributed wind load is converted into a plurality of equivalent concentrated loads, the equivalent concentrated loads are replaced by hollow cylindrical weights (13), the wind load borne by different parts of the down conductor (14) is reflected by the hollow cylindrical weights (13) connected with steel wire inhaul cables (9) on the down conductor traction frame (8) corresponding to the corresponding parts; the degree of the resistance strain gauge attached to the down lead (14) is read.
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 |
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| Publication Number | Publication Date |
|---|---|
| CN113252277A true CN113252277A (en) | 2021-08-13 |
| CN113252277B CN113252277B (en) | 2024-06-25 |
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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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Citations (8)
| 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 |
| CN1353808A (en) * | 1999-06-03 | 2002-06-12 | R·鲁维利有限公司 | System for measuring loadings in structure, measuring unit and measuring sensor |
| CN102305683A (en) * | 2011-07-25 | 2012-01-04 | 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 |
| CN110752570A (en) * | 2019-10-30 | 2020-02-04 | 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 |
| 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 |
| 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 |
-
2021
- 2021-05-24 CN CN202110567021.1A patent/CN113252277B/en active Active
Patent Citations (8)
| 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 |
| CN1353808A (en) * | 1999-06-03 | 2002-06-12 | R·鲁维利有限公司 | System for measuring loadings in structure, measuring unit and measuring sensor |
| CN102305683A (en) * | 2011-07-25 | 2012-01-04 | 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 |
| CN110752570A (en) * | 2019-10-30 | 2020-02-04 | 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 |
| 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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| Title |
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| 吕中宾;谢凯;张习卓;张博;张猛;: "特高压变电站引下线及连接金具系统力学特性分析", 高压电器, no. 09, 16 September 2017 (2017-09-16), pages 36 - 43 * |
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| CN113252277B (en) | 2024-06-25 |
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