CN108389688A - Mining multifunctional combinations of voltages formula mobile substation - Google Patents
Mining multifunctional combinations of voltages formula mobile substation Download PDFInfo
- Publication number
- CN108389688A CN108389688A CN201810082356.2A CN201810082356A CN108389688A CN 108389688 A CN108389688 A CN 108389688A CN 201810082356 A CN201810082356 A CN 201810082356A CN 108389688 A CN108389688 A CN 108389688A
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- China
- Prior art keywords
- iron core
- winding
- transformer
- side switch
- pressure winding
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/02—Casings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/02—Casings
- H01F27/025—Constructional details relating to cooling
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/24—Magnetic cores
- H01F27/245—Magnetic cores made from sheets, e.g. grain-oriented
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2823—Wires
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/327—Encapsulating or impregnating
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/33—Arrangements for noise damping
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
- H01F27/341—Preventing or reducing no-load losses or reactive currents
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/40—Structural association with built-in electric component, e.g. fuse
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F29/00—Variable transformers or inductances not covered by group H01F21/00
- H01F29/02—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Coils Of Transformers For General Uses (AREA)
Abstract
The present invention relates to a kind of mining multifunctional combinations of voltages formula mobile substations, including transformer, explosion-proof casing and high side switch and low-side switch, transformer is mounted in explosion-proof casing, in the both sides of explosion-proof casing, high side switch is installed in installation respectively, low-side switch, the transformer is dual output transformer, including iron core and coil windings, the coil windings being arranged on the outside of iron core are three winding structure, coil windings include low pressure winding, middle pressure winding, high-voltage winding, it is sequentially arranged middle pressure winding on the outside of iron core, low pressure winding, high-voltage winding, along radial arrangement.The beneficial effects of the present invention are：The present invention can achieve the purpose that underground coal mine working face supply voltage while export 660V and 1140V, and effectively reduce mine electric cost, meet environmentally friendly, energy saving, the efficient production requirement of coal mine, be suitble to promote the use of.
Description
Technical field
The invention belongs to mining substation's technical fields more particularly to a kind of mining multifunctional combinations of voltages formula to move power transformation
It stands.
Background technology
With the continuous improvement of coal production Mechanization Level, in installed capacity, voltage class and safety protection function side
Face is just gradually replaced by flame-proof mine movable transformer pack (abbreviation mobile substation, similarly hereinafter).New technology, new process, green wood
Material is constantly applied to mobile substation, just develops at present towards large capacity, high voltage, intensive, the intelligentized direction of protection.
660V power supply systems will gradually be replaced by more efficient 1140V systems under existing well.Currently, underground coal mine low pressure
Equipment supply voltage majority uses 660V, and as more and more electrical equipments are upgraded to 1140V power supplies, this just needs to increase defeated
Go out the supply transformer of 1140V voltages.Two transformers use simultaneously, disadvantage is that：1, equipment investment is high；2, it occupies
Space is big；3, relocation equipment is slow, and face propulsion speed is slow；4, installation maintenance amount headlight disadvantage.It is this to be divided by two transformers
Indescribably the power supply mode for 1140V and 660V voltages has been unable to meet mine working face and is wanted to intensive and automation development
It asks.
Invention content
The technical problem to be solved by the present invention is to：It solves in the prior art to provide 1140V respectively by two transformers
With the power supply problem of 660V voltages, and it is low to provide a kind of equipment investment, occupies little space, safe and efficient mining multifunctional voltage
Assembled moving substation is suitble to promote the use of.
The present invention be solve the problems, such as it is set forth above used by technical solution be：
A kind of mining multifunctional combinations of voltages formula mobile substation, including transformer 1, explosion-proof casing 2 and high side switch 3 and low
Press side switch 4, transformer 1 be mounted on explosion-proof casing 2 in, explosion-proof casing 2 both sides installation respectively installation high side switch 3,
Low-side switch 4, the transformer 1 are dual output transformer, including iron core 5 and coil windings 6, are arranged outside iron core 5
The coil windings 6 of side are three winding structure, and coil windings 6 include low pressure winding, middle pressure winding, high-voltage winding, on the outside of iron core 5 according to
Winding, low pressure winding, high-voltage winding are pressed in secondary arrangement, along radial arrangement.
The low pressure winding, middle pressure winding, high-voltage winding are all made of star-like connection.
The iron core 5 uses three-phase three-limb stacked structure, larger 5 diameter of iron core is selected, with there are certain appearances
Measure nargin.
The iron core 5 selects high quality and low cost grain orientation cold-reduced silicon sheet.
The iron core 5 uses 45 degree of ladder full bias seam structures, using five ladder stepping snips and monolithic lamination process,
The magnetic flux distribution for improving seam crossing reduces the vibrational energy of iron core.Iron core carries out integrated curing process, significantly reduces
No-load current and iron core noise make the mining explosion-proof transformer no-load loss of dual output obtain effective control.
The iron core column and iron yoke of the iron core 5 are circle.
The explosion-proof casing 2, using oval all-wave line flameproof enclosure structure form, rationally designing reduces complete machine height
Degree, continous way press wave technique, reduce complete machine height, improve explosion insulation performance, which has excellent radiation performance, mechanical strength
Height, it is compact-sized the features such as.
The low-side switch 4 contains two-way circuit, can individually be controlled per road current supply circuit.
The low pressure winding, middle pressure winding are two layers of distribution.
The low-side switch 4 respectively carries out 660V and 1140V current supply circuits using two-way vacuum circuit breaker circuit
The error protections such as overload, short circuit, electric leakage, earth leakage search/lockout, overvoltage, under-voltage can be controlled individually per road current supply circuit.
Invention additionally discloses a kind of production methods of mining multifunctional combinations of voltages formula mobile substation, including walk as follows
Suddenly：
1）By investigating the equipment voltage and load condition of domestic main mine working face, in conjunction with electrical equipment demand factor and work(
Rate factor determines mining multifunctional combinations of voltages formula mobile substation performance parameter and determines the reliability requirement of performance parameter；
2）The design of three winding coil：Reasonably select line gauge；Select larger iron core diameter, umber of turn is reduced, in design, low pressure
Winding construction is changed to the form of two layers of distribution by three layers of distribution of the number of turns；Low pressure winding is designed as two conducting wires and around and two
Conducting wire is in the axial direction；
3）The design of dual output iron core：Iron core uses three-phase three-limb stacked structure, larger iron core diameter is selected, to stay
There is certain Capacity Margin, high quality and low cost grain orientation cold-reduced silicon sheet, iron core is selected to use 45 degree of ladder full bias seam knots
Structure improves the magnetic flux distribution of seam crossing using five ladder stepping snips and monolithic lamination process, reduces the vibrational energy of iron core
Amount, iron core carry out integrated curing process, significantly reduce no-load current and iron core noise, make mining multifunctional combinations of voltages formula
Mobile substation no-load loss has obtained effective control；
4）The optimization design of all-wave line explosion-proof casing：The optimization design of all-wave line explosion-proof casing, transformer is using oval all-wave
Line flameproof enclosure structure form, the structure have excellent radiation performance, high mechanical strength, it is compact-sized the features such as, twin voltage is defeated
It is circle to go out the iron core column of transformer core and iron yoke, after design, highly with the common long round section iron core of length ratio
Increase, the width of transformer device core three-phase windings is bigger than the length and width of common transformer device core, according to device core size, closes
Reason selection radius and straightway proportional sizes, make full use of large-diameter circular radian, so that fixed angle iron position is preferably minimized, reach shell
The purpose that body height reduces.
The beneficial effects of the present invention are：The present invention can reach underground coal mine working face supply voltage and meanwhile export 660V and
The purpose of 1140V, and mine electric cost is effectively reduced, meet environmentally friendly, energy saving, the efficient production requirement of coal mine, is suitble to promote
It uses.
Description of the drawings
Fig. 1 is the structural schematic diagram of the present invention；
Fig. 2 is dual output low pressure winding two layers of distribution schematic diagram of the number of turns；
Fig. 3 is device core body diagram；
Fig. 4 is transformer device cored structure schematic diagram.
Wherein, 1- transformers, 2- explosion-proof casings, 3- high side switch, 4- low-side switch, 5- iron cores, 6- coil windings.
Specific implementation mode
With reference to embodiment, the present invention will be further described.
Embodiment 1, referring to Fig.1-4, a kind of mining multifunctional combinations of voltages formula movement described in present embodiment become
Power station, including transformer 1, explosion-proof casing 2 and high side switch 3 and low-side switch 4, transformer 1 are mounted on explosion-proof casing 2
Interior, in the both sides of explosion-proof casing 2, high side switch 3, low-side switch 4 are installed in installation respectively, and the transformer 1 is that twin voltage is defeated
Go out transformer, including iron core 5 and coil windings 6, the coil windings 6 being arranged in 5 outside of iron core are three winding structure, coil windings
6 include low pressure winding, middle pressure winding, high-voltage winding, and 5 outside of iron core is sequentially arranged middle pressure winding, low pressure winding, high-voltage winding,
Along radial arrangement.
The low pressure winding, middle pressure winding, high-voltage winding are all made of star-like connection.
The iron core 5 uses three-phase three-limb stacked structure, larger 5 diameter of iron core is selected, with there are certain appearances
Measure nargin.
The iron core 5 selects high quality and low cost grain orientation cold-reduced silicon sheet.
The iron core 5 uses 45 degree of ladder full bias seam structures, using five ladder stepping snips and monolithic lamination process,
The magnetic flux distribution for improving seam crossing reduces the vibrational energy of iron core.Iron core carries out integrated curing process, significantly reduces
No-load current and iron core noise make the mining explosion-proof transformer no-load loss of dual output obtain effective control.
The iron core column and iron yoke of the iron core 5 are circle.
The explosion-proof casing 2, using oval all-wave line flameproof enclosure structure form, rationally designing reduces complete machine height
Degree, continous way press wave technique, reduce complete machine height, improve explosion insulation performance, which has excellent radiation performance, mechanical strength
Height, it is compact-sized the features such as.
The low-side switch 4 contains two-way circuit, can individually be controlled per road current supply circuit.
The low pressure winding, middle pressure winding are two layers of distribution.
The low-side switch 4 respectively carries out 660V and 1140V current supply circuits using two-way vacuum circuit breaker circuit
The error protections such as overload, short circuit, electric leakage, earth leakage search/lockout, overvoltage, under-voltage can be controlled individually per road current supply circuit.
Embodiment 2, the present invention is by investigating the equipment voltage and load condition of domestic main mine working face, in conjunction with electricity consumption
Equipment demand factor and power factor determine mining multifunctional combinations of voltages formula mobile substation.
According to multifunction combined transformer 1140V and the technology requirement used at the same time of 660V dual output voltages, it is different from
Previous two-winding transformer, the transformer must have three high pressure, middle pressure, low pressure windings.Transformer three winding along it is radial according to
It is secondary from inside to outside, be ranked sequentially by middle pressure, low pressure, high-voltage winding.This structure will necessarily increase the radial size of winding, increase
Impedance voltage, make its be more than specified in GB8286-2010 4% standard.Therefore the increasing of the radial size of winding is reduced as far as possible
Add.
3 kinds of radial sizes of method control winding are used in the present invention.
1. reasonably selecting line gauge；
2. the larger iron core diameter of selection, umber of turn are reduced, in design, low pressure winding structure is changed to two layers by three layers of distribution of the number of turns
The form of distribution；
3. low pressure winding is designed as two conducting wires and around and two conducting wires are in the axial direction.
The above design has the following advantages：
1. the radial size of winding reduces 20%, transformer overall width is effectively reduced；
2. low pressure winding axial height can be made to reduce a conductor width, transformer height is reduced；
3. reducing conductor length, load loss is reduced；
4. coil-winding process need not replace, labor intensity is reduced, is improved labor efficiency.
The transformer winding connections are that Y, y0, y0, three windings are star-like connection.In order to avoid middle pressure, low pressure winding
Pigtail splice all top draw, by it is middle pressure winding head and pigtail connection be placed on lower part draw, in order to ensure y0 when
The head of middle pressure winding and tail portion sequence are exchanged and are drawn by clock phase.
For solve three winding coil working when electric field and magnetic field environment it is more complex, the dipping lacquer quality and dipping lacquer thickness of coil
It must be strict with, this project selects VPI technique of vacuum pressure for dipping electrical, formulates three winding coil impregnation technology flow, and carry out
Twice of vacuum pressure impregnation, to improve the quality of dipping lacquer.
Since the dual output FLP drill transformer has two kinds of output voltages of 1140V and 660V simultaneously, in iron core
The oepration at full load situation of two kinds of voltage is considered in the selection in section.Iron core use three-phase three-limb stacked structure, select compared with
Big iron core diameter, with there are certain Capacity Margins.Select high quality and low cost grain orientation cold-reduced silicon sheet.Iron core uses 45
Degree ladder full bias seam structure improves the magnetic flux distribution of seam crossing, subtracts using five ladder stepping snips and monolithic lamination process
The vibrational energy of iron core is lacked.Iron core carries out integrated curing process, significantly reduces no-load current and iron core noise, makes mining
Multifunctional electric assembled moving substation no-load loss has obtained effective control.
For transformer using oval all-wave line flameproof enclosure structure form, which has excellent radiation performance, machinery strong
Degree is high, it is compact-sized the features such as.The iron core column and iron yoke of dual output transformer core are circle, after design, highly and
Length increased than common long round section iron core, and the width of transformer device core three-phase windings is longer than common transformer device core
Degree and width are big.According to device core sizes, radius and straightway proportional sizes are reasonably selected, large-diameter circular radian is made full use of,
So that fixed angle iron position is preferably minimized, achievees the purpose that body height reduction.
Mesolow side of the present invention switch contains two-way vacuum circuit breaker circuit, respectively to 660V and 1140V current supply circuits into
Row error protection can be controlled individually per road current supply circuit.The event such as respective overload, under-voltage, short-circuit is provided with per road current supply circuit
Hinder detection unit, when certain loop load breaks down, protection, each circuit are realized by cutting off the vacuum circuit breaker in the circuit
Overvoltage, low-voltage value, main circuit current is adjusted can be by display screen pair with Protection parameters such as earth leakage search/lockout, working values
Parameter in control program is configured to complete.
In conclusion new type mining multifunctional electric assembled moving substation is, it can be achieved that following target：
1, product can export 660V and 1140V supply voltages simultaneously, meet underground coal mine working face power supply system different voltages etc.
The demand of grade equipment power supply.
2, realize that two transformers of replacement provide the target of production, effectively reduce equipment purchase cost and safeguard at
This, reduces mine coal cost of winning.
3, it is calculated by rational iron core and winding construction design, effectively reduction no-load loss and load loss, reduction is made an uproar
Sound enhances equipment resistance to shorting and conveyance capacity.
4, it is switched by step down side and realizes the completely self-contained power supply of two-way and protection system, realize maintenance repair dimension
When shield, function that two groups of current supply circuits are independent of each other.
Specific embodiments of the present invention are not construed as limiting the invention, every similar structure using the present invention and change
Change, is within the scope of the invention.
Claims (7)
1. a kind of mining multifunctional combinations of voltages formula mobile substation, it is characterised in that：Including transformer（1）, explosion-proof casing（2）
And high side switch（3）And low-side switch（4）, transformer（1）Mounted on explosion-proof casing（2）It is interior, in explosion-proof casing（2）Two
High side switch is installed in side installation respectively（3）, low-side switch（4）, the transformer（1）For dual output transformer, packet
Include iron core（5）And coil windings（6）, it is arranged in iron core（5）The coil windings in outside（6）For three winding structure, coil windings（6）
Including low pressure winding, middle pressure winding, high-voltage winding, iron core（5）Outside is sequentially arranged middle pressure winding, low pressure winding, high-voltage winding,
Along radial arrangement.
2. a kind of mining multifunctional combinations of voltages formula mobile substation as described in claim 1, it is characterised in that：Described is low
Pressure winding, middle pressure winding, high-voltage winding are all made of star-like connection.
3. a kind of mining multifunctional combinations of voltages formula mobile substation as claimed in claim 2, it is characterised in that：The iron
Core（5）Using three-phase three-limb stacked structure, larger iron core is selected（5）Diameter, with there are certain Capacity Margins.
4. a kind of mining multifunctional combinations of voltages formula mobile substation as claimed in claim 3, it is characterised in that：The iron
Core（5）Select high quality and low cost grain orientation cold-reduced silicon sheet.
5. a kind of mining multifunctional combinations of voltages formula mobile substation as claimed in claim 4, it is characterised in that：The iron
Core（5）Iron core column and iron yoke be circle.
6. a kind of mining multifunctional combinations of voltages formula mobile substation as described in claim 1, it is characterised in that：It is described every
Quick-fried shell（2）, using oval all-wave line flameproof enclosure structure form.
7. a kind of mining multifunctional combinations of voltages formula mobile substation as described in claim 1, it is characterised in that：Described is low
Press side switch（4）Containing two-way circuit, can individually be controlled per road current supply circuit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810082356.2A CN108389688A (en) | 2018-01-29 | 2018-01-29 | Mining multifunctional combinations of voltages formula mobile substation |
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Application publication date: 20180810 |