CN104505930A - Method for synchronously supplying power to large electrolytic aluminum series through two small power supplies and wiring structure - Google Patents
Method for synchronously supplying power to large electrolytic aluminum series through two small power supplies and wiring structure Download PDFInfo
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- CN104505930A CN104505930A CN201410846345.9A CN201410846345A CN104505930A CN 104505930 A CN104505930 A CN 104505930A CN 201410846345 A CN201410846345 A CN 201410846345A CN 104505930 A CN104505930 A CN 104505930A
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Abstract
The invention discloses a method for synchronously supplying power to a large electrolytic aluminum series through two small power supplies and a wiring structure. The method is that a backup rectifier unit is used as a common backup rectifier unit for two groups of power supply sections; when one rectifier unit of one group of power supply section is in overhauling, the common backup rectifier unit can be connected to the power supply section so as to ensure the demand of electrolytic bath on power. The method has the advantages that the purpose of supplying power to one large electrolytic aluminum series through the two small power supplies is achieved; additional rectifier unit is saved; the two power supply sections can play the role of the backup rectifier unit; therefore, the device investment is greatly saved; no space is increased; the changeover process and operation are convenient, so that special setup is saved; the requirement of power supply of the large electrolytic aluminum series can be met; the safety and reliability of use are ensured.
Description
Technical field
the present invention relates to a kind of two small power supplies simultaneously to method and the wiring construction of a Large Electrolytic Aluminium series power, belong to electrolytic aluminium factory Large Electrolytic Aluminium series power technical field.
Background technology
in the direct current electricity consumption of electrolytic aluminium factory Electrolytic Aluminum Series by multiple stage Rectification Power Factor parallel operation.Rectification Power Factor generally adopts N+1 mode to configure, and N+1 platform machine set technology parameter is completely the same, and any unit all can be used as unit for subsequent use; When wherein unit needs maintenance, remaining Rectification Power Factor also 100% can meet electrolytic series need for electricity, and whole Rectification Power Factor is by one group of Power supply, and one group of power supply comprises the using and the reserved two power supplys, and main electrical scheme is the double-bus form of band mother.But along with electrolysis series electric current is increasing, some electrolytic series production capacity even reaches more than 200kt/a, more than burden with power 320MW, and power supply voltage is at more than 110kV.When a power supply capacity is less than a Large Electrolytic Aluminium series required electric power, can be powered by two groups of power supplys, often organize power supply and comprise the using and the reserved two power supplys, main electrical scheme is the structure of two double-bus band mothers, comprises four sections of ac bus simultaneously.Often organize power supply to be respectively partial rectification unit and to power.Now, no matter a Rectification Power Factor for subsequent use is by that group Power supply, another group Rectification Power Factor that power supply is with will without Rectification Power Factor for subsequent use, if when having a Rectification Power Factor to need to overhaul without Rectification Power Factor side for subsequent use, this side power supply capacity will reduce, and when having the power supply of Rectification Power Factor side for subsequent use enough not large, electrolytic aluminium direct current need for electricity can not be met.If each Power supply section configures a Rectification Power Factor for subsequent use; then need the switch of an increase supply cell and proterctive equipment, voltage regulating rectifier transformer, two rectifier cabinets, a set of pure water cooling unit, four D.C. high-current switches, two direct-current measuring devices, two reverse current protection devices, a set of branch DC buss; and need the equipment of increase by 90 × 16 square metres that land used is installed, invest increase by more than 3,000 ten thousand yuan.
Summary of the invention
the object of the invention is to, there is provided a kind of two small power supplies simultaneously to method and the wiring construction of a Large Electrolytic Aluminium series power, Rectification Power Factor for subsequent use need not be increased, the effect that two groups of Power supply sections have unit for subsequent use can be played again, guaranteeing to reduce cost of investment in the reliable situation of power supply safety, thus overcoming the deficiencies in the prior art.
technical scheme of the present invention is achieved in that
method to a Large Electrolytic Aluminium series power while of a kind of two small power supplies of the present invention is that the method adopts a Rectification Power Factor for subsequent use, as the Rectification Power Factor public for subsequent use of two groups of Power supply sections; When wherein one group of Power supply section with a Rectification Power Factor maintenance time, public Rectification Power Factor for subsequent use just accesses this group Power supply section, ensures the need for electricity of electrolysis tank.
in preceding method, between two sections of two ac bus of described two groups of Power supply sections, increase by one section of two ac bus, the two ac bus of this section is connected with public Rectification Power Factor for subsequent use; One section that increases two ac bus is connected with two ac bus of two groups of Power supply sections respectively by four diverter switches; When two groups of Power supply sections any one section with a motor-generator set organize a performance maintenance time, by switching switch, public Rectification Power Factor for subsequent use being accessed this section, disconnecting the connection with another section of bus simultaneously.
in preceding method, describedly by circuit breaker or isolating switch, public Rectification Power Factor for subsequent use is accessed this section, disconnect the connection with another section of bus simultaneously, its handover operation process is: public Rectification Power Factor for subsequent use has a power failure, then first disconnect the block switch run and drop into the block switch being about to run again, public Rectification Power Factor for subsequent use is switched to the power-feed section of opposite side under unloaded condition from the power-feed section of side, transmission operation again after having switched.
of the present invention a kind of two small power supplies formed according to said method simultaneously to the wiring construction of a Large Electrolytic Aluminium series power be that this wiring construction comprises a-power supply group and B-source group; A-power supply group is connected with A section ac bus, and A section ac bus is connected with A Rectification Power Factor ac input end, and A Rectification Power Factor positive pole exports and is connected with positive bus-bar, and A Rectification Power Factor negative pole exports and is connected with negative busbar; B-source group is connected with B section ac bus, and B section ac bus is connected with B Rectification Power Factor ac input end, and B Rectification Power Factor positive pole exports and is connected with positive bus-bar, and B Rectification Power Factor negative pole exports and is connected with negative busbar; C section ac bus is provided with between A section ac bus and B section ac bus, C section ac bus is connected with public Rectification Power Factor ac input end for subsequent use, public Rectification Power Factor positive pole for subsequent use exports and is connected with positive bus-bar, and public Rectification Power Factor negative pole for subsequent use exports and is connected with negative busbar; Negative busbar is connected with the negative pole of Large Electrolytic Aluminium series, and positive bus-bar is connected with the positive pole of Large Electrolytic Aluminium series; C section ac bus two ends are connected with A section ac bus or B section ac bus through diverter switch respectively.
compared with prior art, present invention achieves the object that two small power supplies are powered to a large Electrolytic Aluminum Series simultaneously, technical scheme of the present invention, without the need to increasing Rectification Power Factor in addition, can play again the effect that two Power supply sections have Rectification Power Factor for subsequent use.Therefore, considerable equipment investment has been saved, also without the need to increasing floor space.Hand-over process operations of the present invention is convenient can meet the power reguirements of Large Electrolytic Aluminium series without the need to particular arrangement, safe and reliable in using.
Accompanying drawing explanation
fig. 1 is mode of connection schematic diagram of the present invention.
being labeled as in figure: 1-A power pack, 2-B power pack, 3-A section ac bus, 4-C section ac bus, 5-B section ac bus, 6-A Rectification Power Factor, the public Rectification Power Factor for subsequent use of 7-, 8-B Rectification Power Factor, 9-positive bus-bar, 10-negative busbar, 11-Large Electrolytic Aluminium series, 12-diverter switch.
Embodiment
below in conjunction with drawings and Examples, the present invention is described in further detail, but not as any limitation of the invention.
a kind of two small power supplies of the present invention are simultaneously to the method for a Large Electrolytic Aluminium series power, and as shown in Figure 1, the method adopts a Rectification Power Factor for subsequent use, as the Rectification Power Factor 7 public for subsequent use of two groups of Power supply sections; When wherein one group of Power supply section with a Rectification Power Factor maintenance time, public Rectification Power Factor 7 for subsequent use just accesses this group Power supply section, ensures the need for electricity of electrolysis tank.Concrete grammar is between two ac bus of two groups of Power supply sections, increase by one section of two ac bus, and the two ac bus of this section is connected with public Rectification Power Factor 7 for subsequent use; One section that increases two ac bus is connected with two ac bus of two groups of Power supply sections respectively by four diverter switches 12; When two groups of Power supply sections any one section with a Rectification Power Factor maintenance time, by diverter switch 12, public Rectification Power Factor 7 for subsequent use is accessed this section, disconnects the connection with another section of bus simultaneously.By circuit breaker or isolating switch, public Rectification Power Factor for subsequent use is accessed this section, disconnect the connection with another section of bus simultaneously, its handover operation process is: public Rectification Power Factor for subsequent use had a power failure, then first disconnect the block switch run and drop into the block switch being about to run again, Rectification Power Factor for subsequent use is switched to the power-feed section of opposite side under unloaded condition from the power-feed section of side, transmission operation again after having switched.
of the present invention a kind of two small power supplies formed according to said method are simultaneously to the wiring construction of a Large Electrolytic Aluminium series power, and as shown in Figure 1, this wiring construction comprises a-power supply group 1 and B-source group 2; A-power supply group 1 is connected with A section ac bus 3, and A section ac bus 3 is connected with A Rectification Power Factor 6 ac input end, and A Rectification Power Factor 6 positive pole exports and is connected with positive bus-bar 9, and A Rectification Power Factor 6 negative pole exports and is connected with negative busbar 10; B-source group 2 is connected with B section ac bus 5, and B section ac bus 5 is connected with B Rectification Power Factor 8 ac input end, and B Rectification Power Factor 8 positive pole exports and is connected with positive bus-bar 9, and B Rectification Power Factor 8 negative pole exports and is connected with negative busbar 10; C section ac bus 4 is provided with between A section ac bus 3 and B section ac bus 5, C section ac bus 4 is connected with public Rectification Power Factor 7 ac input end for subsequent use, public Rectification Power Factor for subsequent use 7 positive pole exports and is connected with positive bus-bar 9, and public Rectification Power Factor 7 negative pole for subsequent use exports and is connected with negative busbar 10; Negative busbar 10 is connected with the negative pole of Large Electrolytic Aluminium series 11, and positive bus-bar 9 is connected with the positive pole of Large Electrolytic Aluminium series 11; C section ac bus 4 two ends are connected with A section ac bus 3 and B section ac bus 5 through diverter switch 12 respectively.
Embodiment
when the electricity consumption of Large Electrolytic Aluminium series is greater than the power supply capacity of a small power supply, can as shown in Figure 1, adopt two small power supplies to be a Large Electrolytic Aluminium series power simultaneously.Adopt a unit for subsequent use own in the Rectification Power Factor of N+1 configuration, as the Rectification Power Factor public for subsequent use of two Power supply sections, therefore without the need to increasing Rectification Power Factor in addition.This example adopts two groups of Power supplies, often organizes power supply and comprises the using and the reserved two power supplys, so one has four power supplys.Main wiring mode is the structure of double-bus band mother, when certain power supply with unit one maintenance time, unit for subsequent use just accesses this mains side, still can make full use of the power supply capacity of this power supply, ensures the need for electricity of electrolysis tank.Specific practice is in the middle of four sections of buses of two Power supplies, increase by two sections of buses, increase bus section, busbar section and only connect the public for subsequent use unit of a unit as two Power supply sections, increase bus section, busbar section to be connected by four circuit breakers or isolating switch and other four sections of buses, mode of operation when this mode of connection switches unit for subsequent use is: public Rectification Power Factor for subsequent use had a power failure, then first disconnect the block switch run and drop into the block switch being about to run again, after unit for subsequent use is switched to opposite side from side under unloaded condition, unit for subsequent use transmission operation again, this operational mode makes the relaying protection of switching circuit breaker without the need to particular arrangement.This example solves two small power supplies and powers to a large Electrolytic Aluminum Series simultaneously, and do not increase unit for subsequent use, can play again two Power supply sections has unit for subsequent use.This patent investment reduction, power supply safety is reliable, easy to operate.
Claims (4)
1. two small power supplies are simultaneously to a method for a Large Electrolytic Aluminium series power, it is characterized in that: the method adopts a Rectification Power Factor for subsequent use, as the Rectification Power Factor public for subsequent use of two groups of Power supply sections; When wherein one group of Power supply section with a Rectification Power Factor maintenance time, public Rectification Power Factor for subsequent use just accesses this group Power supply section, ensures the need for electricity of electrolysis tank.
2. according to claim 1 two small power supplies simultaneously to the method for a Large Electrolytic Aluminium series power, it is characterized in that: between the ac bus of described two groups of Power supply sections (double-bus), increase by one section of (double-bus) ac bus, this section of ac bus is connected with public Rectification Power Factor for subsequent use; The one section of ac bus increased is connected with the ac bus of two groups of Power supply sections respectively by four block switches; When two groups of Power supply sections any one section with an any Rectification Power Factor maintenance time, by switching switch, public Rectification Power Factor for subsequent use being accessed this bus section, busbar section, disconnecting the connection with another section of bus simultaneously.
3. according to claim 2 two small power supplies simultaneously to the method for a Large Electrolytic Aluminium series power, it is characterized in that: describedly by circuit breaker or isolating switch, public Rectification Power Factor for subsequent use is accessed this bus section, busbar section, disconnect the connection with another section of bus simultaneously, its handover operation process is: public Rectification Power Factor for subsequent use had a power failure, then first disconnect the block switch run and drop into the block switch being about to run again, public Rectification Power Factor for subsequent use is switched to the power-feed section of opposite side under unloaded condition from the power-feed section of side, transmission operation again after having switched.
4. two small power supplies are simultaneously to a wiring construction for a Large Electrolytic Aluminium series power, it is characterized in that: comprise a-power supply group (1) and B-source group (2); A-power supply group (1) is connected with A section ac bus (3), A section ac bus (3) is connected with A Rectification Power Factor (6) ac input end, A Rectification Power Factor (6) positive pole exports and is connected with positive bus-bar (9), and A Rectification Power Factor (6) negative pole exports and is connected with negative busbar (10); B-source group (2) is connected with B section ac bus (5), B section ac bus (5) is connected with B Rectification Power Factor (8) ac input end, B Rectification Power Factor (8) positive pole exports and is connected with positive bus-bar (9), and B Rectification Power Factor (8) negative pole exports and is connected with negative busbar (10); C section ac bus (4) is provided with between A section ac bus (3) and B section ac bus (5), C section ac bus (4) is connected with public Rectification Power Factor for subsequent use (7) ac input end, public Rectification Power Factor for subsequent use (7) positive pole exports and is connected with positive bus-bar (9), and public Rectification Power Factor for subsequent use (7) negative pole exports and is connected with negative busbar (10); Negative busbar (10) is connected with the negative pole of Large Electrolytic Aluminium series (11), and positive bus-bar (9) is connected with the positive pole of Large Electrolytic Aluminium series (11); C section ac bus (4) two ends are connected with A section ac bus (3) or B section ac bus (5) through diverter switch (12) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410846345.9A CN104505930B (en) | 2014-12-31 | 2014-12-31 | Two groups of power supplys are simultaneously to the method and wiring construction of Large Electrolytic Aluminium series power |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410846345.9A CN104505930B (en) | 2014-12-31 | 2014-12-31 | Two groups of power supplys are simultaneously to the method and wiring construction of Large Electrolytic Aluminium series power |
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| CN104505930A true CN104505930A (en) | 2015-04-08 |
| CN104505930B CN104505930B (en) | 2017-09-12 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201367483Y (en) * | 2009-03-18 | 2009-12-23 | 贵阳铝镁设计研究院 | Electrolytic aluminum factory rectifier unit allocation structure |
| US20120025630A1 (en) * | 2010-07-28 | 2012-02-02 | Toshiba Tec Kabushiki Kaisha | Image forming apparatus |
| CN204271737U (en) * | 2014-12-31 | 2015-04-15 | 贵阳铝镁设计研究院有限公司 | Two small power supplies are simultaneously to the wiring construction of a Large Electrolytic Aluminium series power |
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2014
- 2014-12-31 CN CN201410846345.9A patent/CN104505930B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201367483Y (en) * | 2009-03-18 | 2009-12-23 | 贵阳铝镁设计研究院 | Electrolytic aluminum factory rectifier unit allocation structure |
| US20120025630A1 (en) * | 2010-07-28 | 2012-02-02 | Toshiba Tec Kabushiki Kaisha | Image forming apparatus |
| CN204271737U (en) * | 2014-12-31 | 2015-04-15 | 贵阳铝镁设计研究院有限公司 | Two small power supplies are simultaneously to the wiring construction of a Large Electrolytic Aluminium series power |
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| CN104505930B (en) | 2017-09-12 |
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