CN209232535U - A kind of high voltage large capcity shock type transformer being installed on hydropower station tail water platform - Google Patents
A kind of high voltage large capcity shock type transformer being installed on hydropower station tail water platform Download PDFInfo
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- CN209232535U CN209232535U CN201821824811.3U CN201821824811U CN209232535U CN 209232535 U CN209232535 U CN 209232535U CN 201821824811 U CN201821824811 U CN 201821824811U CN 209232535 U CN209232535 U CN 209232535U
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Abstract
The utility model relates to transformer technology fields, in particular to a kind of high voltage large capcity shock type transformer for being installed on hydropower station tail water platform, analysis is measured to the vibration characteristics of power station scene draft tube deck first, Analysis of Vibration Characteristic is carried out to the Transformer Modeling just set, compare draft tube deck and transformer vibration characteristics, on the one hand resonance problem is avoided the occurrence of, on the other hand the response that analysis transformer is vibrated by draft tube deck, the reinforcement of structure antivibration is carried out to transformer, guarantees transformer reliability service.In addition transformer online monitoring system, the operation conditions of real-time monitoring transformer, further ensures reliability.
Description
Technical field
The present invention relates to transformer technology field, in particular to a kind of high voltage great Rong for being installed on hydropower station tail water platform
Measure shock type transformer.
Background technique
Transformer is mounted in bank base by previous large hydropower station construction mostly, and the generating set of transformer is then mounted on
On the draft tube deck of dam, bank base and draft tube deck distance are farther out, it is therefore desirable to will be in bank base by a large amount of cable and bus
Transformer be connected with the generating set on draft tube deck, such arrangement bus corridor occupied area is larger, will investment it is big
The construction investment and operating expenses of amount, and connection type is complicated between each electrical equipment, connects bus material cost and power station
Long-term running load loss is larger.For this problem, if transformer is also mounted on draft tube deck, so that transformer
It is got close to its generating set distance, then can greatly save civil engineering, cable connection length and load loss, but since draft tube deck shakes
Move larger, the transformer of conventional design is mounted on draft tube deck due to being influenced by sustained vibration, not can guarantee safe and reliable fortune
At this moment row just needs to design a kind of shock type transformer for being mounted on hydropower station tail water platform.
Summary of the invention
The problem to be solved in the present invention is to overcome the shortcomings of background technique, provides a kind of hydropower station tail water platform of being installed on
High voltage, large capacity shock type transformer.
The present invention is achieved through the following technical solutions:
A kind of high voltage large capcity shock type transformer being installed on hydropower station tail water platform, including transformer, the change
Depressor eigentone is not identical or not close as draft tube deck eigentone；Transformer is influenced by draft tube deck vibration
Position more outstanding has reinforced structure, and reinforced structure is influenced position more outstanding by draft tube deck vibration for increasing
Fastness and stability.
It further, further include on-line monitoring system, the transformer online monitoring system includes: vibrated in transformer
Installation vibration monitoring probe in position more outstanding is influenced, it is affected by vibration more prominent that vibration monitoring probe obtains transformer in real time
The vibration signal at position out；Oil outlet and oil inlet are reserved respectively in the middle part of the oil tank wall of transformer and lower part, wherein going out
Hydraulic fluid port and oil inlet are separately connected oil chromatography monitoring device, and oil chromatography monitoring device carries out the oily condition of Transformer real
When monitor；Partial discharge monitoring probe, partial discharge monitoring probe are installed respectively close to the position of high pressure A phase and high pressure C phase on the transformer
The insulation performance of real-time monitoring inside transformer；Installation casing dielectric loss monitoring device is set at the raising seat of transformer, casing is situated between
Damage monitoring device real-time monitoring bushing shell for transformer operation conditions；Vibration monitoring probe, oil chromatography monitoring device, partial discharge monitoring probe
Pass through optical cable with casing dielectric loss monitoring device monitoring signals are transferred in the background analysis software of backstage computer.
Further, the transformer eigentone passes through the inside body of electromagnetism calculation optimization Design of Transformer
Or/and fuel tank attachment is arranged to obtain.
Preferably, the reinforced structure is included in solid between oil pipe and transformer upper fuel tank above transformer cooling device
Surely it connects support tube, be fixedly connected with a bracket between cooling device lower raft and transformer lower part fuel tank tank wall, in transformation
Device increases and connects corner strap between seat and flange, and the support standing tree of inside transformer lead thickeies, quantity increases, and shortens cantilever beam
The length of wooden piece increases the quantity of iron core circle stay, increases the binding quantity of polyester belt, the flange quantity in the company's of reduction tracheae,
Lengthen single even one of the length of tracheae and the quantity for increasing its fixed point or a variety of.
Preferably, transformer position more outstanding affected by vibration includes the raising seat, transformer of transformer
Oil tank wall, the oil conservator bracket of transformer, the pedestal of transformer, the cooling device side wall of transformer and one or more in top
A position.
The invention also includes a kind of high voltage large capcity shock type design of transformer sides for being installed on hydropower station tail water platform
Method, comprising the following steps:
(1) draft tube deck and transformer eigentone are analyzed: using vibration test equipment measurement analysis power station tail
The vibration characteristics of horizontal platform obtains draft tube deck eigentone；Transformer threedimensional model is established using Pro/E software, it will
Transformer threedimensional model, which is imported into finite element software Patran/Nastran, carries out finite element analysis, analyzes the vibration of transformer
Characteristic obtains transformer eigentone；
(2) draft tube deck and transformer resonance are avoided: the design of electromagnetism calculation optimization being carried out to transformer, electromagnetism is calculated
Corresponding transformer arrangement structure carries out modeling analysis, is arranged and is adjusted by multiple structure, the intrinsic vibration frequency of Design of Transformer
Rate, which is staggered, can generate the vibration frequency of resonance with draft tube deck eigentone, while by the eigentone of transformer
It reduces；
(3) it analyzes position outstanding affected by vibration: finite element analysis is carried out to transformer, study transformer by tail water
The dynamic response that platform sustained vibration influences utilizes Pro/E software and finite element software Patran/ according to dynamic response
Nastran carries out chanical strength analysis and Calculation of Fatigue Strength to transformer device structure, analysis obtain transformer it is affected by vibration compared with
For position outstanding；
(4) transformer device structure reinforcement: to analyzing the transformer portion more outstanding affected by vibration obtained in step (3)
Position carries out structural strengthening, increases the fastness and stability at position more outstanding affected by vibration.
As prioritization scheme of the invention, the on-line monitoring of transformer is further comprised in the method for the present invention: in backstage computer
Background analysis software in more outstanding position affected by vibration to transformer vibration signal real-time monitoring, transformer is transported
Oily condition in row carry out real-time monitoring, to the insulation performance real-time monitoring of inside transformer, to bushing shell for transformer operation conditions
Real-time monitoring.
The beneficial effects of the present invention are: transformer of the invention meets for being mounted on large hydropower station draft tube deck
The safe operation of transformer under draft tube deck sustained vibration operating condition, be greatly saved the construction of hydropower stations and cost of investment and after
The running wastage of phase.
Detailed description of the invention
Fig. 1 is the draft tube deck vibrational waveform figure of measurement of the embodiment of the present invention.
Fig. 2 is the draft tube deck rumble spectrum figure of measurement of the embodiment of the present invention.
Fig. 3 is transformer of embodiment of the present invention three-dimensional entity model and grid dividing figure.
Fig. 4 is the 17th first order mode figure of transformer of the embodiment of the present invention.
Fig. 5 is the 18th first order mode figure of transformer of the embodiment of the present invention.
Fig. 6 is the 19th first order mode figure of transformer of the embodiment of the present invention.
Fig. 7 is the 20th first order mode figure of transformer of the embodiment of the present invention.
Fig. 8 is cooling device of embodiment of the present invention reinforced structure figure.
Fig. 9 is that the embodiment of the present invention increases seat reinforced structure figure.
In figure, 1 bracket, 2 support tubes, 3 brackets, 4 cooling devices, 5 corner straps, 6 increase seat, 7 flanges.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those skilled in the art are not having
Every other embodiment obtained under the premise of creative work is made, shall fall within the protection scope of the present invention.In the present invention
Description in, it should be noted that the orientation or positional relationship of the instructions such as term "inner", "outside", "upper", "lower", "front", "rear"
For positional relationship based on the figure, it is merely for convenience of description of the present invention and simplification of the description, rather than indication or suggestion institute
The device or element of finger must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to this hair
Bright limitation.
The present invention includes the high voltage being mounted on draft tube deck, high-power transformer, the intrinsic vibration of the transformer
Frequency is not identical or not close as draft tube deck eigentone, avoids generating resonance between transformer and draft tube deck.Tail
Horizontal platform eigentone show that the eigentone of transformer passes through Pro/E by vibration test equipment measurement analysis
Software carries out three-dimensional modeling to transformer, and transformer threedimensional model is imported into finite element software Patran/Nastran and is carried out
Finite element analysis obtains, is then become by the inside body of electromagnetism calculation optimization Design of Transformer, fuel tank attachment arrangement etc.
The eigentone of depressor not only makes the eigentone of transformer not generate resonance with draft tube deck, will also become
The intrinsic frequency of depressor controls relatively low, chooses minimum eigentone design and is preferred.
Transformer of the invention is influenced position more outstanding with reinforced structure by draft tube deck vibration, and reinforced structure is used
The fastness and stability at position more outstanding are influenced by draft tube deck vibration in increase.Under the reinforced structure may include
One or more of column, but not limited to this: it is solid between oil pipe and transformer upper fuel tank above transformer cooling device 4
Surely support tube 2 is connected, a bracket 3 is fixedly connected between 4 lower raft of cooling device and transformer lower part fuel tank tank wall, it is such as attached
Shown in Fig. 8, conventional transformer is only linked together by bracket 1 with transformer in the middle part of cooling device 4, and the present embodiment is becoming
Reinforced structure is done between depressor and cooling device 4, this reinforced structure to be connected as one between transformer and cooling device 4
It is whole, form a firm frame；It is fixedly connected with corner strap 5 between power transformer enclosure 6 and flange 7, reinforce flange 7 and rises
Bonding strength between dais wall guarantees the stability for increasing seat 6, as shown in Fig. 9；The support standing tree of inside transformer lead
It thickeies, quantity increases；Shorten the length of cantilever beam wooden piece；Increase the quantity of iron core circle stay；Increase the binding quantity of polyester belt；
Flange quantity in the company's of reduction tracheae；It lengthens the single even length of tracheae and increases the quantity of its fixed point.Above-mentioned reinforced structure
Selected according to the actual situation, it is to be understood that in addition to above-mentioned reinforced structure, other positions or other for increasing by tail
The reinforced structure of fastness and stability that horizontal platform vibration influences position more outstanding is within the scope of the invention.
The transformer of the present embodiment further includes an on-line monitoring system, the on-line monitoring system include: transformer by
Vibration influences more position outstanding installation vibration monitoring probe, vibration monitoring probe obtain in real time transformer it is affected by vibration compared with
For the vibration signal at position outstanding.Transformer position more outstanding affected by vibration by sunykatuib analysis transformer by
Draft tube deck vibrates the dynamic response influenced and obtains, the storage of raising seat 6, the oil tank wall of transformer, transformer including transformer
Oil Tank bracket, the pedestal of transformer, the cooling device side wall of transformer and one or more positions in top.The present embodiment is only
It is to list part position more outstanding affected by vibration that may be present, specific position more outstanding affected by vibration
Depending on analysis test result.In addition to this, the middle part of the oil tank wall of transformer and lower part respectively reserve oil outlet and into
Hydraulic fluid port, wherein oil outlet and oil inlet are separately connected oil chromatography monitoring device, and oil chromatography monitoring device is to Transformer
Oily condition carries out real-time monitoring；Partial discharge monitoring probe is installed in the position close to high pressure A phase and high pressure C phase respectively on the transformer,
The insulation performance of partial discharge monitoring probe real-time monitoring inside transformer；In 6 position of raising seat of transformer installation casing dielectric loss prison
Survey device, casing dielectric loss monitoring device real-time monitoring bushing shell for transformer operation conditions；Vibration monitoring probe, oil chromatography monitoring dress
It sets, partial discharge monitoring probe and casing dielectric loss monitoring device pass through the background analysis that monitoring signals are transferred to backstage computer by optical cable
In software.The above-mentioned on-line monitoring system for collectively constituting transformer of the present invention.
A kind of high voltage large capcity shock type design of transformer method being installed on hydropower station tail water platform, including following step
It is rapid:
(1) draft tube deck and transformer eigentone are analyzed
Draft tube deck is carried out using the EN3600 multi-channel portable Vibration-Measuring System that Beijing Inventec Appliances company produces
Live vibration-testing analyzes the vibratory response situation of draft tube deck, analyzes draft tube deck eigentone and vibration characteristics, vibration
Dynamic signal is obtained using piezoelectric acceleration sensor (model EN060), signal sampling frequencies 8192Hz.It is obtained by field measurement
Draft tube deck vibratory response measurement analysis result as shown in figure 1 and 2.
Analysis of Vibration Characteristic is carried out to Transformer Modeling, three-dimensional drawing software is utilized according to the engineering drawing of main transformer
Pro/E establishes the threedimensional model of transformer, and transformer threedimensional model is imported into finite element software Patran/Nastran
Finite element analysis is carried out, transformer eigentone and vibration characteristics are analyzed.Tank material elasticity modulus is set as 2.1 × 105
MPa, Poisson's ratio 0.29, density are 7.8 × 10-6 kg/mm3.Grid dividing is carried out to cabinet using tetrahedron element, is carried out
Dynamic analysis obtain transformer device structure computation model and key position bending vibation mode picture as shown in figs. 3-7.
(2) draft tube deck and transformer resonance are avoided
It is flat according to the tail water of the transformer eigentone vibration data and field measurement analyzed in above-mentioned steps (one)
Platform eigentone vibration data, the vibration data of the two is compared, and transformer eigentone is put down with tail water
The eigentone of platform is staggered, i.e., so that transformer eigentone and the eigentone of draft tube deck it is not identical or
It is not close, to avoid there is the generation of resonance problem.In addition to this, also the control of transformer eigentone to be existed as far as possible
Lower level will realize the adjustment to transformer eigentone, need to by continuous calculating transformer electromagnetism numerical procedure,
The design of electromagnetism calculation optimization is carried out to transformer, the corresponding transformer arrangement structure of electromagnetism numerical procedure is subjected to modeling analysis,
It is arranged and is adjusted by multiple structure, selection is optimized to inside transformer body and fuel tank attachment arrangement etc., is changed with this
Transformer eigentone.Transformer electromagnetism numerical procedure and the design of electromagnetism calculation optimization are common skills known in this field
Art no longer excessively repeats here.
(3) position outstanding affected by vibration is analyzed
The vibration acceleration and rumble spectrum work in draft tube deck vibration data that in-site measurement in step (1) is analyzed
For driving source input transformer, finite element analysis is carried out to transformer, analysis transformer is influenced by draft tube deck sustained vibration
Dynamic response；According to the dynamic response that transformer is influenced by draft tube deck sustained vibration, Pro/E software and finite element software are utilized
Patran/Nastran carries out chanical strength analysis and Calculation of Fatigue Strength to transformer device structure, show that transformer is affected by vibration
Position more outstanding.
(4) transformer device structure reinforcement: to analyzing the transformer portion more outstanding affected by vibration obtained in step (3)
Position carries out structural strengthening, increases the fastness and stability at position more outstanding affected by vibration.Need to which position into
Row structural strengthening determines based on the analysis results, below only for example, for example, if 4 support construction of cooling device of transformer
It is affected by vibration more prominent, then it needs to reinforce it, increases reinforced structure, generally conventional transformer is only at middle part by transformation
Be fixed between device and cooling device 4 by bracket 1, this example can above transformer cooling device 4 oil pipe and transformation
Support tube 2 is fixedly connected between device upper fuel tank, it is fixed between 4 lower raft of cooling device and transformer lower part fuel tank tank wall
A bracket 3 is connected, as shown in Fig. 8, has done reinforced structure between transformer and cooling device 4, this reinforced structure to become
It is connected as an entirety between depressor and cooling device 4, forms a firm frame；For another example, in power transformer enclosure 6 and method
It is fixedly connected with corner strap 5 between orchid 7, reinforce flange 7 and increases the bonding strength between seat wall, guarantees the stability for increasing seat 6；
There are also the support standing tree thickening of inside transformer lead, quantity is increased, shorten the length of cantilever beam wooden piece, increases iron core circle support
The quantity of item increases the binding quantity of polyester belt, the flange quantity in the company's of reduction tracheae, lengthens the single even length of tracheae and increasing
Add some structural strengthening measures of quantity of its fixed point etc., the present embodiment is it is not possible that all possible structural strengthening of exhaustion is arranged
Apply, therefore structural strengthening is much not limited to above-mentioned some measures, if it is existing can increase it is affected by vibration more outstanding
The structural strengthening measure of the fastness and stability at position is within the scope of the invention.
(5) transformer online monitoring
The vibration signal at more outstanding position affected by vibration to transformer in the background analysis software of backstage computer
Real-time monitoring carries out real-time monitoring, the insulation performance of real-time monitoring inside transformer, in real time to the oily condition of Transformer
Monitor bushing shell for transformer operation conditions.On-line monitoring system is above-mentioned it is stated that being not repeated herein.Pass through background analysis software
It is convenient to switch over observation analysis from the background, by each monitoring signals comparative analysis, each parameter of transformer station high-voltage side bus is obtained, it is comprehensive
Inside transformer operation conditions is monitored, finds what the abnormal vibration point and inside transformer that occur on transformer were likely to occur in time
Deteriorate sign, avoid the generation of transformer problem situation, guarantees such special transformer safe and reliable operation.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Ability
The those of ordinary skill in domain it is understood that it can still modify to technical solution illustrated in the above embodiments, or
Equivalent replacement of some of the technical features；And these are modified or replaceed, and do not make the essence of corresponding technical solution de-
Spirit and scope from technical solution of various embodiments of the present invention.
Claims (5)
1. a kind of high voltage large capcity shock type transformer for being installed on hydropower station tail water platform, including transformer, feature exist
In: the transformer eigentone is not identical or not close as draft tube deck eigentone；Transformer is flat by tail water
Platform vibration, which influences position more outstanding, has reinforced structure, and reinforced structure is influenced more to dash forward for increasing by draft tube deck vibration
The fastness and stability at position out.
2. the high voltage large capcity shock type transformer according to claim 1 for being installed on hydropower station tail water platform, special
Sign is: further including on-line monitoring system, the transformer online monitoring system includes: affected by vibration more prominent in transformer
Position installation vibration monitoring probe out, vibration monitoring probe obtain transformer position more outstanding affected by vibration in real time
Vibration signal；Oil outlet and oil inlet, wherein oil outlet and oil inlet are reserved respectively in the middle part of the oil tank wall of transformer and lower part
Mouth is separately connected oil chromatography monitoring device, and oil chromatography monitoring device carries out real-time monitoring to the oily condition of Transformer；?
Partial discharge monitoring probe is installed respectively close to the position of high pressure A phase and high pressure C phase on transformer, partial discharge monitoring probe real-time monitoring becomes
Insulation performance inside depressor；Casing dielectric loss monitoring device, casing dielectric loss monitoring dress are installed in raising seat (6) position of transformer
Set real-time monitoring bushing shell for transformer operation conditions；Vibration monitoring probe, oil chromatography monitoring device, partial discharge monitoring probe and casing are situated between
Damage monitoring device passes through optical cable and monitoring signals is transferred in the background analysis software of backstage computer.
3. the high voltage large capcity shock type transformer according to claim 1 or 2 for being installed on hydropower station tail water platform,
Be characterized in that: the transformer eigentone passes through the inside body or/and fuel tank of electromagnetism calculation optimization Design of Transformer
Attachment is arranged to obtain.
4. the high voltage large capcity shock type transformer according to claim 1 or 2 for being installed on hydropower station tail water platform,
Be characterized in that: the reinforced structure is included in fixed between oil pipe and transformer upper fuel tank above transformer cooling device (4)
Connection support tube (2) is fixedly connected with a bracket (3) between cooling device (4) lower raft and transformer lower part fuel tank tank wall,
Corner strap (5) are connected between power transformer enclosure (6) and flange (7), the support standing tree thickening of inside transformer lead, quantity
Increase, shorten the length of cantilever beam wooden piece, increases the quantity of iron core circle stay, increase the binding quantity of polyester belt, the company's of reduction gas
Flange quantity in pipe lengthens single even one of the length of tracheae and the quantity for increasing its fixed point or a variety of.
5. the high voltage large capcity shock type transformer according to claim 2 for being installed on hydropower station tail water platform, special
Sign is: transformer position more outstanding affected by vibration includes the fuel tank of the raising seat (6) of transformer, transformer
Wall, the oil conservator bracket of transformer, the pedestal of transformer, the cooling device side wall of transformer and one or more portions in top
Position.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821824811.3U CN209232535U (en) | 2018-11-07 | 2018-11-07 | A kind of high voltage large capcity shock type transformer being installed on hydropower station tail water platform |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821824811.3U CN209232535U (en) | 2018-11-07 | 2018-11-07 | A kind of high voltage large capcity shock type transformer being installed on hydropower station tail water platform |
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| CN209232535U true CN209232535U (en) | 2019-08-09 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109346268A (en) * | 2018-11-07 | 2019-02-15 | 山东泰开变压器有限公司 | A kind of high voltage large capcity shock type transformer being installed on hydropower station tail water platform and design method |
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2018
- 2018-11-07 CN CN201821824811.3U patent/CN209232535U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109346268A (en) * | 2018-11-07 | 2019-02-15 | 山东泰开变压器有限公司 | A kind of high voltage large capcity shock type transformer being installed on hydropower station tail water platform and design method |
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