CN101593611A - The module winding general transformer of negative electric weight can neutralize - Google Patents
The module winding general transformer of negative electric weight can neutralize Download PDFInfo
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- CN101593611A CN101593611A CNA2008101133715A CN200810113371A CN101593611A CN 101593611 A CN101593611 A CN 101593611A CN A2008101133715 A CNA2008101133715 A CN A2008101133715A CN 200810113371 A CN200810113371 A CN 200810113371A CN 101593611 A CN101593611 A CN 101593611A
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Abstract
Low power factor, harmonic wave, negative-sequence current etc. are the negative electric weight in the electric power system, usually with element in parallel compensate, filtering, adjustment.More economical method be load with some compensate other loads, with some other loads that neutralize of loading, so the more general-purpose transformer of outlet will become the industry leading role.Dry-type transformer adopts poured with epoxy resin technology more, but many secondary winding mould technical difficulty height that outlet is more, and the winding construction complexity of casting complete, the easily explosion of energising back, the present invention is divided into plurality of modules with integrated poured winding, each module is simple structure, is convenient to Mould Machining and product is heat-resisting, and discloses the module winding general transformer method for designing of the negative electric weight that can neutralize.The principle of the invention is clear, and is simple in structure, and the reliability height is with low cost, than integrated poured transformer bigger area of dissipation is arranged, and is convenient to realize producing in enormous quantities.The present invention can be static and be adjusted load condition on transformer self and the bus dynamically, and can provide the adjustment resource to the system of upper level according to the requirement of power supply department.
Description
Technical field
The present invention relates to the general-purpose transformer design and production method.
Background technology
Low power factor, harmonic wave, negative-sequence current etc. are the negative electric weight in the electric power system, usually with elements such as shunt capacitance inductance compensate, filtering, adjustment.More economical method be load with some compensate other loads, with some other loads that neutralize of loading.The more general-purpose transformer of outlet will become the industry leading role.
General-purpose transformer has entered the high reliability technology New Times, and dry-type transformer adopts the poured with epoxy resin new technology more.But many secondary winding mould technical difficulty height that outlet is more, and the winding construction complexity of casting complete, the easily explosion of energising back urgently needs new method to solve this difficult problem.
Summary of the invention
The present invention is divided into plurality of modules with integrated poured winding, and each module is simple structure, is convenient to Mould Machining and product is heat-resisting.And the module winding general transformer method for designing of the negative electric weight that can neutralize disclosed.
To achieve these goals, the present invention has adopted following technical scheme.
1, forms by iron core, insulating part, securing member and former limit winding, secondary winding.Former limit winding can be made into integral module, also can be made into plurality of segments winding module, is assembled into integral body when treating general assembly.The secondary winding can be made into integral body, also can be made into some single secondary winding modules, is assembled into integral body when treating general assembly.But this transformer former limit module and secondary module paper tinsel around or wire-wound, successively gluing or module the cast.It is whole that but the former and deputy limit of this transformer module gluing becomes, but also crimping is whole.
The method of winding parameter design is:
1) each electric weight of the former limit of transformer such as power factor, harmonic wave, negative phase-sequence etc. keep higher quality.Approach is: the electric energy of obtaining of balance is wanted in each load that is connected in the transformer secondary.If there is load need obtain the electric current of hysteresis, then the several secondary of transformer certain or certain draw leading current (as phase shift) and its neutralization.If there is rectified load to produce high order harmonic component, transformer then arranges certain or certain several secondary by phase shift, produces the effect reduction harmonic wave of many wave heads power taking jointly.If there is asymmetric load to produce negative-sequence current, transformer is then arranged complementary secondary current and its neutralization, and the energy that draws is presented back or another secondary of feed-in to load output or time-delay.If certain load changes, the function that some secondary of transformer also has switching, adjusts.
2) each electric weight on the bus of living in of the former limit of transformer such as power factor, harmonic wave, negative phase-sequence etc. keep higher quality.Approach is: the electric energy of obtaining of balance is wanted in each load that is connected in the former limit of transformer bus of living in.If there is load need obtain the electric current of hysteresis on the bus, then the several secondary of transformer certain or certain must be got leading current (as phase shift) and its neutralization.If there is on the bus rectified load to produce high order harmonic component, transformer then arranges certain or certain several secondary by phase shift, produces the effect reduction harmonic wave of many wave heads power taking jointly.If there is asymmetric load to produce negative-sequence current on the bus, transformer is then arranged complementary secondary current and its neutralization, and the energy that draws is presented back or another secondary of feed-in to load output or time-delay.If load changes on the bus, the function that some secondary of transformer also has switching, adjusts.
3) each electric weight on the bus of living in of the former limit of transformer such as power factor, harmonic wave, negative phase-sequence etc. become the adjustment resource of upper level electric power system for the upper level electric power system keeps net value.
According to field requirement system of selection 1) or method 2) or method 3).
2, this transformer can be used for the preposition isolating transformer of units in series high voltage frequency conversion device.The negative electric weight that other loads on each unit or its high voltage bus produce can be neutralized.1) each unit that is connected in transformer is that rectified load produces high order harmonic component, and transformer is by the average phase shift of each secondary, and the effect that produces the power taking of many wave heads jointly reduces harmonic wave.The function that some secondary of transformer also has switching, adjusts is tackled each unit load inequality.2) electric energy of obtaining of balance is wanted in each load that is connected in the former limit of transformer bus of living in.If there is load need obtain the electric current of hysteresis on the bus, then the several secondary of transformer certain or certain must be got leading current (as phase shift) and its neutralization.If there is on the bus rectified load to produce high order harmonic component, transformer then arranges certain or certain several secondary by phase shift, produces the effect reduction harmonic wave of many wave heads power taking jointly.If there is asymmetric load to produce negative-sequence current on the bus, transformer is then arranged complementary secondary current and its neutralization.The function that some secondary of transformer also has switching, adjusts, load changes on the reply bus.3) each electric weight on the bus of living in of the former limit of transformer such as power factor, harmonic wave, negative phase-sequence etc. become the adjustment resource of upper level electric power system for the upper level electric power system keeps net value.
3, this transformer is used for the former limit of neutralizing transformer negative phase-sequence electric weight.Asymmetric load produces negative-sequence current, and transformer is arranged complementary secondary current and its neutralization, and the energy that draws is presented back or another secondary of feed-in to load output or time-delay.Control draw energy, to load output, time-delay present back, the work of another secondary of feed-in born by control unit.Control unit is made up of controlled rectification bridge, energy-storage travelling wave tube, inverter bridge, as need not to export or the work of another secondary of feed-in, then the no-reverse change bridge.
4, former limit winding can be made into integral module, also can be made into plurality of segments winding module, is assembled into integral body when treating general assembly.The segmentation winding need carry out mutual mechanical connection and electrical connection, and mechanical connection can be established and cooperate (concentric reducer) end to end, and electrical connection need be established splice insulation.
5, but the module crimping of the former and deputy limit of this transformer is whole.Former and deputy limit module can be for ease of installing the stay pre-groove.Between the module of former limit, can establish cushion block between the secondary module.
The principle of the invention is clear, and is simple in structure, and the reliability height is with low cost, than integrated poured transformer bigger area of dissipation is arranged, and is convenient to realize producing in enormous quantities.Provide brand-new means to reactive power compensation, filtering harmonic wave, removal negative-sequence current.
Description of drawings
Fig. 1 is the vertical throwing face schematic diagram of integrated poured winding.
Fig. 2 is the vertical throwing face schematic diagram of the former limit of the present invention winding module.
Fig. 3 is the vertical throwing face schematic diagram of secondary winding module of the present invention.
Fig. 4 is a concentric reducer module diagram of the present invention.
Fig. 5 is two concentric reducer modules of the present invention connection diagram.
Fig. 6 is the former and deputy limit of a present invention module, and stay and cushion block assembling schematic diagram.
Fig. 7 is stay of the present invention and cushion block assembling schematic diagram.
Fig. 8 is the insulation system schematic diagram that two modules of the present invention are electrically connected
Fig. 9 is the present invention's former and deputy limit module and stay cross sectional representation.
Figure 10 is six groups of former and deputy limits of the present invention module, reaches stay and cushion block and is assembled into whole schematic diagram.
Figure 11 is the winding connection diagram that the present invention produces Phasing.
Figure 12 is a control unit principle schematic of the present invention.
Figure 13 is the control unit principle schematic of no-output function of the present invention.
Figure 14 be no-output function of the present invention the control unit energy storage, present back oscillogram.
Embodiment
Specify the present invention module winding general transformer embodiment of negative electric weight that can neutralize below in conjunction with accompanying drawing, but the invention is not restricted to following each embodiment.
Fig. 1 is the vertical throwing face schematic diagram of integrated poured winding.1 is former limit winding, and 2 is the secondary winding, and 3 is outlet terminal, and all the other are the epoxy casting thing.
Fig. 2 is the vertical throwing face schematic diagram of the former limit of the present invention winding module.
Fig. 3 is the vertical throwing face schematic diagram of secondary winding module of the present invention.
Fig. 4 is a concentric reducer module diagram of the present invention.
Fig. 5 is two concentric reducer modules of the present invention connection diagram.
Fig. 6 is the former and deputy limit of a present invention module, and stay and cushion block assembling schematic diagram, and 4 is cushion block, and 5 is stay.
Fig. 7 is stay of the present invention and cushion block assembling schematic diagram, and 4 is cushion block, and 5 is stay.
Fig. 8 is the insulation system schematic diagram that two modules of the present invention are electrically connected, and 6 are the lead-out wire insulation, and 7 is lead-out wire conductor and welding thing, and 8 is insulating case, injects insulating cement in the cover.
Fig. 9 is the present invention's former and deputy limit module and stay cross sectional representation, and 5 is stay.
Figure 10 is six groups of former and deputy limits of the present invention module, reaches stay and cushion block and is assembled into whole schematic diagram.
Figure 11 is the winding connection diagram that the present invention produces Phasing, and 9,10 is winding.
Figure 12 is a control unit principle schematic of the present invention, and 11 is the electronic power switch element, and 12 is the inductive energy storage element.
Figure 13 is the control unit principle schematic of no-output function of the present invention, and 11 is the electronic power switch element, and 12 is the inductive energy storage element.
Figure 14 be no-output function of the present invention the control unit energy storage, present back oscillogram.1 series is source waveform, and 2 series are target waveform, and 3 series are for adjusting waveform.Time 0---60 are the energy storage stage, the time 61---, 120 were the stage of presenting back.Shown that certain phase current moves the process of any electrical degree, is used for adjusting negative-sequence current.
Is example below in conjunction with accompanying drawing with the preposition isolating transformer of units in series high voltage frequency conversion device, and can the neutralize manufacturing and the course of work of module winding general transformer of negative electric weight of the present invention is described.
Suppose 6 kilovolts of units in series high voltage frequency conversion devices, 1000 kilovolt-amperes, 15 power cells.200 kilovolt-amperes of rectified loads are arranged, 200 kilovolt-amperes of hysteresis 30 degree current loadings on 6 kilovolts of buses.Upper level electric power system requirement provides neutralization hysteresis 20 to spend the adjustment resource of 200 kilovolt-amperes of current loadings.
As not considering the situation of other loads of bus, 15 unit are divided into five groups, and every group of transformer secondary phase shift (Figure 11) 12 degree can be formed 30 wave head ways to take power and overcome the high order harmonic component that self rectified load causes.
Consider the situation of other loads of bus, 15 unit are divided into five groups, and two kinds of loads have occupied 0 degree and lagged behind two positions of 30 degree on the bus.15 power cells connect transformer secondary phase shift (Figure 11) and are arranged as leading 30 degree, leading 20 degree, and leading 10 degree, 10 degree that lag behind, five groups of 20 degree lag behind.
According to above-mentioned design, make former limit module (Fig. 2) and secondary module (Fig. 3), press-fit into complete machine according to Fig. 4 to Figure 10.
Can change with induction-motor load during high voltage converter work, other loads also can change on the bus.We can utilize each unit load difference control of high voltage converter, leading 30 degree secondary element keeps track hysteresis, 30 degree current loadings.The bus imbalance that the load proportion scalable rectified load of change " two groups of leading 20 degree, hysteresis 20 degree " and " two groups of leading 10 degree, hysteresis 10 degree " fluctuates and causes.
If be thought of as the upper level electric power system, provide the adjustment resource of 200 kilovolt-amperes of neutralization hysteresis 20 degree current loadings.15 power cells connect the phase shift of transformer secondary and are arranged as leading 30 degree, leading 25 degree, and leading 15 degree, 10 degree that lag behind, five groups of 20 degree lag behind.
The present invention can be static and be adjusted load condition on transformer self and the bus dynamically, and can provide the adjustment resource to the system of upper level according to the requirement of power supply department.
Claims (5)
1, can the neutralize module winding general transformer of negative electric weight is characterized in that: be made up of iron core, insulating part, securing member and former limit winding, secondary winding.Former limit winding can be made into integral module, also can be made into plurality of segments winding module, is assembled into integral body when treating general assembly.The secondary winding can be made into integral body, also can be made into some single secondary winding modules, is assembled into integral body when treating general assembly.But this transformer former limit module and secondary module paper tinsel around or wire-wound, successively gluing or module the cast.It is whole that but the former and deputy limit of this transformer module gluing becomes, but also crimping is whole.
The method of winding parameter design is:
1) each electric weight of the former limit of transformer such as power factor, harmonic wave, negative phase-sequence etc. keep higher quality.Approach is: the electric energy of obtaining of balance is wanted in each load that is connected in the transformer secondary.If there is load need obtain the electric current of hysteresis, then the several secondary of transformer certain or certain draw leading current (as phase shift) and its neutralization.If there is rectified load to produce high order harmonic component, transformer then arranges certain or certain several secondary by phase shift, produces the effect reduction harmonic wave of many wave heads power taking jointly.If there is asymmetric load to produce negative-sequence current, transformer is then arranged complementary secondary current and its neutralization, and the energy that draws is presented back or another secondary of feed-in to load output or time-delay.If certain load changes, the function that some secondary of transformer also has switching, adjusts.
2) each electric weight on the bus of living in of the former limit of transformer such as power factor, harmonic wave, negative phase-sequence etc. keep higher quality.Approach is: the electric energy of obtaining of balance is wanted in each load that is connected in the former limit of transformer bus of living in.If there is load need obtain the electric current of hysteresis on the bus, then the several secondary of transformer certain or certain must be got leading current (as phase shift) and its neutralization.If there is on the bus rectified load to produce high order harmonic component, transformer then arranges certain or certain several secondary by phase shift, produces the effect reduction harmonic wave of many wave heads power taking jointly.If there is asymmetric load to produce negative-sequence current on the bus, transformer is then arranged complementary secondary current and its neutralization, and the energy that draws is presented back or another secondary of feed-in to load output or time-delay.If load changes on the bus, the function that some secondary of transformer also has switching, adjusts.
3) each electric weight on the bus of living in of the former limit of transformer such as power factor, harmonic wave, negative phase-sequence etc. become the adjustment resource of upper level electric power system for the upper level electric power system keeps net value.
According to field requirement system of selection 1) or method 2) or method 3).
2, according to the module winding general transformer of the described negative electric weight that neutralizes of claim 1, it is characterized in that: this transformer can be used for the preposition isolating transformer of units in series high voltage frequency conversion device.The negative electric weight that other loads on each unit or its high voltage bus produce can be neutralized.1) each unit that is connected in transformer is that rectified load produces high order harmonic component, and transformer is by the average phase shift of each secondary, and the effect that produces the power taking of many wave heads jointly reduces harmonic wave.The function that some secondary of transformer also has switching, adjusts is tackled each unit load inequality.2) electric energy of obtaining of balance is wanted in each load that is connected in the former limit of transformer bus of living in.If there is load need obtain the electric current of hysteresis on the bus, then the several secondary of transformer certain or certain must be got leading current (as phase shift) and its neutralization.If there is on the bus rectified load to produce high order harmonic component, transformer then arranges certain or certain several secondary by phase shift, produces the effect reduction harmonic wave of many wave heads power taking jointly.If there is asymmetric load to produce negative-sequence current on the bus, transformer is then arranged complementary secondary current and its neutralization.The function that some secondary of transformer also has switching, adjusts, load changes on the reply bus.3) each electric weight on the bus of living in of the former limit of transformer such as power factor, harmonic wave, negative phase-sequence etc. become the adjustment resource of upper level electric power system for the upper level electric power system keeps net value.
3, according to the module winding general transformer of the described negative electric weight that neutralizes of claim 1, it is characterized in that: this transformer is used for the former limit of neutralizing transformer negative phase-sequence electric weight.Asymmetric load produces negative-sequence current, and transformer is arranged complementary secondary current and its neutralization, and the energy that draws is presented back or another secondary of feed-in to load output or time-delay.Control draw energy, to load output, time-delay present back, the work of another secondary of feed-in born by control unit.Control unit is made up of controlled rectification bridge, energy-storage travelling wave tube, inverter bridge, as need not to export or the work of another secondary of feed-in, then the no-reverse change bridge.
4, according to the module winding general transformer of the described negative electric weight that neutralizes of claim 1, it is characterized in that: former limit winding can be made into integral module, also can be made into plurality of segments winding module, is assembled into integral body when treating general assembly.The segmentation winding need carry out mutual mechanical connection and electrical connection, and mechanical connection can be established and cooperate (concentric reducer) end to end, and electrical connection need be established splice insulation.
5, according to the module winding general transformer of the described negative electric weight that neutralizes of claim 1, it is characterized in that: but the module crimping of the former and deputy limit of this transformer is for whole.Former and deputy limit module can be for ease of installing the stay pre-groove.Between the module of former limit, can establish cushion block between the secondary module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101133715A CN101593611A (en) | 2008-05-29 | 2008-05-29 | The module winding general transformer of negative electric weight can neutralize |
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|---|---|---|---|
| CNA2008101133715A CN101593611A (en) | 2008-05-29 | 2008-05-29 | The module winding general transformer of negative electric weight can neutralize |
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| CN101593611A true CN101593611A (en) | 2009-12-02 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102201282A (en) * | 2010-03-26 | 2011-09-28 | 株式会社日立产机系统 | Coil transformer composed of unit configuration |
| CN102568776A (en) * | 2011-12-29 | 2012-07-11 | 保定天威集团(江苏)五洲变压器有限公司 | Spiral winding transformer |
| CN106373757A (en) * | 2016-11-08 | 2017-02-01 | 江苏宝亨新电气有限公司 | Combined transformer high-voltage coil |
| CN106373758B (en) * | 2016-11-08 | 2018-08-17 | 江苏宝亨新电气有限公司 | A kind of transformer high-voltage coil and the mold for manufacturing the coil |
| CN112217408A (en) * | 2020-09-30 | 2021-01-12 | 阳光电源股份有限公司 | Cascaded multi-port converter and three-phase medium-voltage input system |
| CN112719809A (en) * | 2020-12-24 | 2021-04-30 | 苏州工业园区星德胜电机有限公司 | Production process and installation method of large-inclination-angle turbine |
| CN114063492A (en) * | 2021-09-30 | 2022-02-18 | 科华数据股份有限公司 | Energy-saving control method and device for power supply system rectifier module and storage medium |
-
2008
- 2008-05-29 CN CNA2008101133715A patent/CN101593611A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102201282A (en) * | 2010-03-26 | 2011-09-28 | 株式会社日立产机系统 | Coil transformer composed of unit configuration |
| CN103400688A (en) * | 2010-03-26 | 2013-11-20 | 株式会社日立产机系统 | Coil transformer composed of unit configuration |
| CN102568776A (en) * | 2011-12-29 | 2012-07-11 | 保定天威集团(江苏)五洲变压器有限公司 | Spiral winding transformer |
| CN106373757A (en) * | 2016-11-08 | 2017-02-01 | 江苏宝亨新电气有限公司 | Combined transformer high-voltage coil |
| CN106373758B (en) * | 2016-11-08 | 2018-08-17 | 江苏宝亨新电气有限公司 | A kind of transformer high-voltage coil and the mold for manufacturing the coil |
| CN112217408A (en) * | 2020-09-30 | 2021-01-12 | 阳光电源股份有限公司 | Cascaded multi-port converter and three-phase medium-voltage input system |
| CN112719809A (en) * | 2020-12-24 | 2021-04-30 | 苏州工业园区星德胜电机有限公司 | Production process and installation method of large-inclination-angle turbine |
| CN114063492A (en) * | 2021-09-30 | 2022-02-18 | 科华数据股份有限公司 | Energy-saving control method and device for power supply system rectifier module and storage medium |
| CN114063492B (en) * | 2021-09-30 | 2024-04-19 | 科华数据股份有限公司 | Energy-saving control method, control device and storage medium for power supply system rectifying module |
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Open date: 20091202 |