CN112670063A - Noise reduction method for 330kV high-voltage reactor compensation station - Google Patents
Noise reduction method for 330kV high-voltage reactor compensation station Download PDFInfo
- Publication number
- CN112670063A CN112670063A CN202011440110.1A CN202011440110A CN112670063A CN 112670063 A CN112670063 A CN 112670063A CN 202011440110 A CN202011440110 A CN 202011440110A CN 112670063 A CN112670063 A CN 112670063A
- Authority
- CN
- China
- Prior art keywords
- voltage reactor
- compensation station
- noise reduction
- reactor
- additionally arranged
- 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
Links
- 230000009467 reduction Effects 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 23
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 41
- 238000004519 manufacturing process Methods 0.000 claims abstract description 8
- 239000011087 paperboard Substances 0.000 claims abstract description 8
- 238000009413 insulation Methods 0.000 claims description 5
- 235000000396 iron Nutrition 0.000 claims description 3
- 238000005192 partition Methods 0.000 claims description 2
- 230000003014 reinforcing effect Effects 0.000 claims description 2
- 230000004888 barrier function Effects 0.000 claims 1
- 239000003921 oil Substances 0.000 description 18
- 229910000976 Electrical steel Inorganic materials 0.000 description 9
- 229910052742 iron Inorganic materials 0.000 description 8
- 238000004804 winding Methods 0.000 description 8
- 230000005291 magnetic effect Effects 0.000 description 5
- 238000003825 pressing Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000004364 calculation method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000010008 shearing Methods 0.000 description 3
- 239000002023 wood Substances 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 230000008719 thickening Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000872 buffer Substances 0.000 description 1
- 210000001520 comb Anatomy 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000003302 ferromagnetic material Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Landscapes
- Regulation Of General Use Transformers (AREA)
Abstract
The invention discloses a noise reduction method for a 330kV high-voltage reactor compensation station, which comprises the following steps: manufacturing an iron core in a 330kV high-voltage reactor by adopting a six-level fully-inclined seam; a rubber pad is additionally arranged between a pad foot and the bottom of the tank in the 330kV high-voltage reactor; a soft rubber pad is additionally arranged on a positioning back-pressure nail in a 330kV high-voltage reactor; a vibration reduction rubber mat is additionally arranged on a radiator support in a 330kV high-voltage reactor; a vibration reduction insulating paperboard is additionally arranged at the fixed position of the body and the box cover of the 330kV high-voltage reactor, and an enclosure structure is adopted for the 330kV high-voltage reactor; the method can realize the noise reduction of the 330kV high-voltage reactor compensation station.
Description
Technical Field
The invention relates to a noise reduction method, in particular to a noise reduction method for a 330kV high-voltage reactor compensation station.
Background
The high-voltage reactor compensation station mainly aims at solving the problem of reactive compensation of 330kV line changing to the ground in the east axis region of Western 'an'. The noise during the operation of the compensation station is mainly due to the electromagnetic noise generated by the reactor and to the aerodynamic noise generated by the cooling fan. The noise of the compensation station is mainly medium and low frequency, and the sound pressure value is generally 60-80 dB (A). Because the compensation station is located in the city of western ann, how to reduce the influence of the noise of the high-voltage reactor on the surrounding environment becomes one of the key tasks of the engineering construction.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a noise reduction method for a 330kV high-voltage reactor compensation station, which can realize the noise reduction of the 330kV high-voltage reactor compensation station.
In order to achieve the purpose, the noise reduction method for the 330kV high-voltage reactor compensation station comprises the following steps:
manufacturing an iron core in a 330kV high-voltage reactor by adopting a six-level fully-inclined seam;
a rubber pad is additionally arranged between a pad foot and the bottom of the tank in the 330kV high-voltage reactor;
a soft rubber pad is additionally arranged on a positioning back-pressure nail in a 330kV high-voltage reactor;
a vibration reduction rubber mat is additionally arranged on a radiator support in a 330kV high-voltage reactor;
a vibration reduction insulating paperboard is additionally arranged at the fixed position of the body positioning and the box cover of the 330kV high-voltage reactor;
and enclosing the high-voltage reactor by a partition plate and a box body in the 330kV compensation station.
The thickness of the rubber pad is 30 mm.
The thickness of an oil tank in the 330kV high-voltage reactor is 200 mm.
The length, width and height of an oil tank in the 330kV high-voltage reactor are 5100mm, 1850mm and 2155mm respectively.
The material of the oil tank is Q235A.
The wall thickness of the tank was 10 mm.
Reinforcing irons are welded at the positions of four corners of the oil tank.
The method also comprises the step of controlling the manufacturing process of the 330kV high-voltage reactor so as to reduce the noise of the 330kV high-voltage reactor.
The invention has the following beneficial effects:
in the noise reduction method for the 330kV high-voltage reactor compensation station, during specific operation, an iron core in the 330kV high-voltage reactor is manufactured by adopting a six-stage fully-inclined seam; a rubber pad is additionally arranged between a pad foot and the bottom of the tank in the 330kV high-voltage reactor; a soft rubber pad is additionally arranged on a positioning back-pressure nail in the 330kV high-voltage reactor, and a vibration-damping rubber pad is additionally arranged on a radiator support in the 330kV high-voltage reactor; the vibration reduction insulating paper board is additionally arranged at the fixed position of the body and the box cover of the 330kV high-voltage reactor to reduce the noise of the 330kV high-voltage reactor, and the vibration reduction insulating paper board is convenient and simple to operate and convenient to popularize and apply.
Drawings
FIG. 1 is a schematic diagram of a noise generation mechanism of a high-voltage reactor;
FIG. 2 is a schematic view of a stem lead angle;
fig. 3 is a schematic diagram of the core dimensions.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings:
the noise reduction method of the 330kV high-voltage reactor of the compensation station comprises the following specific processes:
the high-voltage reactor noise has three sound sources, namely an iron core, a winding and a cooler, namely the sum of the noise caused by no-load, load and a cooling system.
The noise generated by the iron core is mainly caused by the fact that the size of the silicon steel sheet is slightly changed under the action of the alternating magnetic field. Because the variation cycle of magnetostriction is half of the power supply frequency, and the vibration of the high-voltage reactor body caused by magnetostriction is based on twice the power supply frequency, the vibration of the silicon steel sheet is mainly caused by the magnetostriction characteristic of the ferromagnetic material.
The reason why the winding vibrates is that the current generates electromagnetic force in the winding, and the leakage magnetic field can also make the structural member vibrate. The electromagnetic force (and vibration amplitude) is proportional to the square of the current, while the emitted acoustic power is proportional to the square of the vibration amplitude. Thus, the emitted acoustic power has a clear relationship with the load current. The noise generation mechanism of the high-voltage reactor is schematically shown in figure 1.
Therefore, the noise reduction of the high-voltage reactor is mainly divided into two parts of noise reduction design and manufacturing process control of the high-voltage reactor.
1) Noise reduction design of high-voltage reactor of compensation station
2) The iron core adopts six-stage fully-inclined seams, and a schematic diagram of a local angle is shown in figure 2;
the iron core adopts a 45-degree fully-inclined seam to reduce the magnetostriction at the corner of the iron core, and the noise of the iron core can be reduced by about 4 dB.
12) Electromagnetic calculation tries to reduce the proportion of Hw/phi D, and when the ratio is reduced by 10%, the noise is reduced by 6dB, and the magnetic flux density is reduced to 1.65T.
And (3) simply calculating the magnetic density: BS 45e t; e t ═ 95.455V/turn; s-2603.3 cm2；B＝1.65T
13) A rubber pad is added between the foot pad and the bottom of the box, and the thickness needs to be increased to 30 mm.
14) The rigid connection mode of the foot pad part is improved, the rigid connection is changed into elastic connection by adding the rubber pad, and the noise can be reduced by 2-3 dB.
15) The positioning back pressure nail is provided with a soft rubber cushion.
16) In the operation process, the high-voltage reactor body is rigidly connected with the high-voltage reactor oil tank to generate vibration, and the purpose of adding the rubber mat is to improve rigid connection, enable flexible connection and reduce noise.
17) The thickening of oil tank wall adopts little flute oil tank, and the flute interval will be little, and minimum to 425mm, the thickening of oil tank case lid to place the reinforced iron, the oil tank is thick for 200mm, and the material is steel sheet Q235A, and tank wall 10mm is thick, and flute interval 500mm respectively welds 4 reinforced irons in the oil tank four corners.
18) The radiator support adds and subtracts the cushion that shakes.
19) The fixed position of the transformer body and the tank cover is provided with an insulation paper board for increasing and decreasing vibration so as to reduce rigid vibration between the transformer body and the oil tank, and the insulation paper board mainly buffers and damps vibration.
110) Note that the length, width and height size ratio of the oil tank cannot be integral multiple, and the oil tank of the product is long: 5100mm wide: 1850mm high: 2155mm, the size ratio is not an integer multiple.
111) Calculating the natural vibration of 75-125 Hz, 175-225 Hz, 275-325 Hz and 375-425 Hz, and taking the multiple of 100 frequencies.
The size of the iron core is reasonably calculated, so that the natural frequency of the iron core avoids the frequency band range of the fundamental frequency and the second, third and fourth high frequencies of magnetostrictive vibration, and the noise rise caused by resonance is prevented. A schematic of the core dimensions is shown in fig. 3.
Natural frequency of iron core
Wherein d is1＝d2＝590，Hw＝1165，
KC＝0.84
F is then0＝1.08×0.84×0.000383×105＝34.76Hz；
The natural frequency of the iron core is 34.76Hz, obviously the frequency band range is avoided, and the noise rise phenomenon caused by resonance is effectively controlled.
2) Control of manufacturing process of high-voltage reactor of compensation station
21) The silicon steel sheet is brushed with double H-shaped glue, the upper iron yoke is not coated, and the specific parameters are shown in Table 1.
TABLE 1
The brush double-H glue mainly enables all levels of iron core sheets to be more compact, and the iron core sheets are integrated, so that the phenomenon that vibration and noise are generated due to the fact that the iron core sheets are not compact is avoided.
22) The pressing force of the clamping piece is properly increased and controlled to be about 1.5, and the cushion block needs to be additionally provided with a regulating paperboard to ensure the pressing.
Clamping an iron yoke: the empirical coefficient of clamping force is selected to be 1.5kg/cm2In the manufacturing process, the iron yoke is clamped for 4 times according to the size of the iron yoke, the oil pressure of the oil jack is calculated to be 21.5MPa according to a calculation formula, and the iron yoke is clamped by using the auxiliary clamp and the oil jack; the core column clamping calculation method is to clamp the core column with the iron yoke, the core column is clamped for 3 times, and the oil pressure of the oil jack is 10.4 MPa. The main purpose is to increase the fastening force of the iron core, make the stress of the iron core uniform and keep the iron core sheet straight.
23) And blanking the iron core at a new shearing line to control burrs.
The process is guaranteed: the silicon steel sheet longitudinal shearing line cutter is used for grinding the cutter irregularly, the precision of the cutter is guaranteed, the cutter is set before blanking, the gap between two cutter sets is 0.015mm, the end jumping is smaller than 0.01mm, burrs after the cutter is sheared are guaranteed to be below 0.01mm, the width, the burrs and the straightness of the silicon steel sheet are measured when the silicon steel sheet is longitudinally sheared to be 1-1.5m, the measured burrs are below 0.01mm, and the sheet width error is 0-0.2 mm. And entering a normal state after the standard is met, and measuring burr and width errors every 300 meters. The method is characterized in that imported Alston transverse shearing is adopted for blanking, the equipment is high in precision, after 3-4 pieces of blanking are carried out, the size and burrs of the silicon steel sheet are measured, the deviation of a long side is 0- +0.50, the deviation of a short side is 0- + 1, and the burrs are less than 0.01 mm.
24) The axial pressing force of the coil needs to be large, vertical winding and tight winding are adopted, the radial pre-degree of the coil needs to be small, and the rigidity of the coil is improved.
All coils are wound on a vertical winding machine and an adjustable winding die. The wire adopts the winding displacement device of pressing of taking the gasbag device when the coil is coiled, combs, arranges the wire, guarantees the tension when the wire is coiled through the pressure of adjustment gasbag, controls the coil radial, reaches the design requirement.
The effective breadth of a single coil pressed and mounted on a press plate of a 2000kN coil press is 2.5 m multiplied by 2.5 m, the safety and reliability of the press mounting of the coil are guaranteed, the center of the coil is aligned with the center of a bottom plate of the press during the press mounting of the coil, and laminated wood cushion blocks are additionally arranged and mounted on the upper and lower cushion blocks of the coil.
25) The end part of the iron core is pressed tightly, the density of the cushion blocks is increased, the gap of the cushion blocks is reduced, and the insulation thickness of the clamping piece is increased by 1 mm.
The normal product has 20 wood cushion blocks, and the invention uses 36 wood cushion blocks, so that the quantity of the cushion blocks is increased, the iron core is uniformly stressed and is more compact; the insulation of the clamping piece is increased to 24mm, so that the iron core is more compact and the noise is reduced.
26) The section of the iron core is as positive as possible, the filling rate is improved, the yoke is enlarged, and the width of the final-stage sheet is widened; and observing a paint film of the iron core sheet, wherein the paint film is good, and taking the silicon steel sheet with good material and high performance, and lightly taking and placing. The magnetic density can be reduced by righting the cross section, the noise is reduced, and the silicon steel sheet cannot be thrown at will, so that the internal structure of the device can be changed, and the operation is carried out according to the process requirements.
Claims (8)
1. A noise reduction method for a 330kV high-voltage reactor compensation station is characterized by comprising the following steps:
manufacturing an iron core in a high-voltage reactor of a 330kV compensation station by adopting a six-level fully-inclined seam;
a rubber pad is additionally arranged between a pad foot and the bottom of a box in a high-voltage reactor of a 330kV compensation station;
a soft rubber pad is additionally arranged on a positioning back-pressure nail in a high-voltage reactor of a 330kV compensation station;
a vibration reduction rubber mat is additionally arranged on a radiator support in a high-voltage reactor of a 330kV compensation station;
a vibration reduction insulating paperboard is additionally arranged at the fixed position of the middle body and the box cover of the high-voltage reactor of the 330kV compensation station;
and enclosing the high-voltage reactor by a partition plate and a box body in the 330kV compensation station.
2. The noise reduction method for the high-voltage reactor of the middle 330kV compensation station according to claim 1, wherein the thickness of the rubber pad is 30 mm.
3. The method for reducing the noise of the high-voltage reactor in the 330kV compensation station as claimed in claim 1, wherein the thickness of an oil tank in the 330kV high-voltage reactor is 200 mm.
4. The noise reduction method for the high-voltage reactor in the 330kV compensation station as claimed in claim 1, wherein the oil tank is made of Q235A.
5. The noise reduction method for the high-voltage reactor of the 330kV compensation station according to claim 1, wherein the wall thickness of the oil tank is 10 mm.
6. The noise reduction method for the high-voltage reactor of the 330kV compensation station according to claim 1, wherein reinforcing irons are welded at four corners of the oil tank.
7. The noise reduction method for the high-voltage reactor of the 330kV compensation station according to claim 1, further comprising controlling a manufacturing process of the 330kV high-voltage reactor to reduce noise of the 330kV high-voltage reactor.
8. According to the claim 1, the sound insulation barrier is additionally arranged around the reactor in the 330kV compensation station.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011440110.1A CN112670063A (en) | 2020-12-10 | 2020-12-10 | Noise reduction method for 330kV high-voltage reactor compensation station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011440110.1A CN112670063A (en) | 2020-12-10 | 2020-12-10 | Noise reduction method for 330kV high-voltage reactor compensation station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112670063A true CN112670063A (en) | 2021-04-16 |
Family
ID=75401947
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011440110.1A Pending CN112670063A (en) | 2020-12-10 | 2020-12-10 | Noise reduction method for 330kV high-voltage reactor compensation station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112670063A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201311819Y (en) * | 2008-12-19 | 2009-09-16 | 湖南湘能变压器有限责任公司 | Low-noise amorphous alloy transformer |
| CN201508744U (en) * | 2009-05-19 | 2010-06-16 | 中电电气集团有限公司 | Positioning structure below transformer body of groove-type lower oil saving tank |
| CN202217569U (en) * | 2011-09-22 | 2012-05-09 | 江西钱江电气有限责任公司 | Device for connecting transformer oil tank and tank cover |
| CN202434294U (en) * | 2011-12-11 | 2012-09-12 | 保定天威集团有限公司 | Upper positioning device for flat-top oil tank of transformer |
| CN205542322U (en) * | 2016-04-21 | 2016-08-31 | 山东晨宇电气股份有限公司 | Green intelligent VX of high -speed heavy load hookup traction transformer |
| CN206610720U (en) * | 2017-03-09 | 2017-11-03 | 红河红变电气有限公司 | A kind of dry-type transformer |
| CN110911119A (en) * | 2019-11-28 | 2020-03-24 | 利锐特电气有限公司 | Novel energy-saving transformer |
| CN110993276A (en) * | 2019-12-22 | 2020-04-10 | 天威保变(合肥)变压器有限公司 | Transformer capable of reducing noise |
| CN210956347U (en) * | 2018-12-10 | 2020-07-07 | 阳光电源股份有限公司 | Reactor device |
-
2020
- 2020-12-10 CN CN202011440110.1A patent/CN112670063A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201311819Y (en) * | 2008-12-19 | 2009-09-16 | 湖南湘能变压器有限责任公司 | Low-noise amorphous alloy transformer |
| CN201508744U (en) * | 2009-05-19 | 2010-06-16 | 中电电气集团有限公司 | Positioning structure below transformer body of groove-type lower oil saving tank |
| CN202217569U (en) * | 2011-09-22 | 2012-05-09 | 江西钱江电气有限责任公司 | Device for connecting transformer oil tank and tank cover |
| CN202434294U (en) * | 2011-12-11 | 2012-09-12 | 保定天威集团有限公司 | Upper positioning device for flat-top oil tank of transformer |
| CN205542322U (en) * | 2016-04-21 | 2016-08-31 | 山东晨宇电气股份有限公司 | Green intelligent VX of high -speed heavy load hookup traction transformer |
| CN206610720U (en) * | 2017-03-09 | 2017-11-03 | 红河红变电气有限公司 | A kind of dry-type transformer |
| CN210956347U (en) * | 2018-12-10 | 2020-07-07 | 阳光电源股份有限公司 | Reactor device |
| CN110911119A (en) * | 2019-11-28 | 2020-03-24 | 利锐特电气有限公司 | Novel energy-saving transformer |
| CN110993276A (en) * | 2019-12-22 | 2020-04-10 | 天威保变(合肥)变压器有限公司 | Transformer capable of reducing noise |
Non-Patent Citations (2)
| Title |
|---|
| 实用机电节能技术手册编辑委员会: "《实用机电节能技术手册》", 30 June 1997, 机械工业出版社 * |
| 辽宁省电机工程学会: "《电机工程新技术文集》", 31 January 2006, 中国电力出版社 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2014061154A1 (en) | Inverter device, transformer, and transformer manufacturing method | |
| US20200266692A1 (en) | High Force And Low Noise Linear Fine-Tooth Motor | |
| JPS58143510A (en) | Stationally induction electric apparatus | |
| KR20210107768A (en) | Grain-oriented electrical steel sheet and its manufacturing method | |
| US3436707A (en) | Electrical inductive apparatus with clamping and air-gap adjusting frame | |
| CN112670063A (en) | Noise reduction method for 330kV high-voltage reactor compensation station | |
| US7292127B2 (en) | Transformer | |
| WO2023160961A1 (en) | A transformer arrangement | |
| JPH08111322A (en) | Low noise transformer and reactor core | |
| CN210015772U (en) | Sound insulation transformer iron core | |
| JP7365120B2 (en) | stationary induction equipment | |
| Corin et al. | Grades Layout Impact ON Performance Of Mixed Grade Magnetic Cores | |
| JPS61256614A (en) | Low-noise transformer | |
| Solanki | Transformer Noise | |
| CN102227787B (en) | Induction device | |
| JP2006013294A (en) | Reactor | |
| JPH03135007A (en) | Iron core of direct-current reactor | |
| JP3243611U (en) | low noise transformer | |
| CN206657709U (en) | One kind reduces amorphous alloy transformer noise casing | |
| Liu et al. | Investigation on the AMDT Core Model Resonance Characteristics by Harmonic Response Analysis | |
| JPH05101943A (en) | Three-phase wound core | |
| JP2013211335A (en) | Composite magnetic core, reactor and power supply unit | |
| KR20230130858A (en) | Transformer | |
| KR20230130861A (en) | Transformer | |
| JPH04116813A (en) | Reactor using iron core with gap |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210416 |