CN101847831B - Power distribution cabinet - Google Patents
Power distribution cabinet Download PDFInfo
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- CN101847831B CN101847831B CN2010101764688A CN201010176468A CN101847831B CN 101847831 B CN101847831 B CN 101847831B CN 2010101764688 A CN2010101764688 A CN 2010101764688A CN 201010176468 A CN201010176468 A CN 201010176468A CN 101847831 B CN101847831 B CN 101847831B
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- 230000000087 stabilizing effect Effects 0.000 claims abstract description 66
- 230000002457 bidirectional effect Effects 0.000 claims description 41
- 230000005611 electricity Effects 0.000 claims description 27
- 238000012360 testing method Methods 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 7
- 238000005070 sampling Methods 0.000 claims description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 10
- 229910052710 silicon Inorganic materials 0.000 description 10
- 239000010703 silicon Substances 0.000 description 10
- 238000001514 detection method Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 238000004134 energy conservation Methods 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000003203 everyday effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000011897 real-time detection Methods 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005315 distribution function Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
Abstract
The invention discloses a power distribution cabinet, which comprises an incoming circuit breaker, a voltage-stabilizing power-saving module and a power distribution device. A power source is connected with the input end of the incoming circuit breaker; the output end of the incoming circuit breaker is connected with the input end of the voltage-stabilizing power-saving module; the output end of the voltage-stabilizing power-saving module is connected with the input end of the power distribution device; the power distribution cabinet can also comprises a bypass unit; and the power source is connected with the power distribution device by the incoming circuit breaker through the voltage-stabilizing power-saving module or the bypass unit. Compared with the conventional power distribution cabinet, the power distribution cabinet has the voltage stabilizing and power saving functions, can perform power-saving adjustment according to power supply voltage and power using time during use, stabilizes and purifies the electric power while completing power conservation and power distribution, improves power supply efficiency and better meets power distribution requirement.
Description
Technical field
The present invention relates to a kind of industrial electric power power distribution cabinet, relate in particular to a kind of electricity saving function power distribution cabinet of voltage stabilizing that has.
Background technology
Enter 21 century, the shortage of the energy and the pollution of environment are more and more serious to the influence of human economy and social sustainable development.Though vast territory and abundant resources in China, aboundresources, but still be the poor state of the energy, especially aspect energy utilization rate, owing to be subjected to the influence of factors such as fund, technology and energy prices, the energy utilization rate of China is more much lower than developed country.The energy more than 90% utilizes loss and waste in the process in exploitation, processing conversion, accumulating and terminal, particularly electric power and power equipment utilizes the aspect, though China's power industry development rapidly, but can not satisfy the needs of economic development and people's lives demand growth, so energy savings has been the task of top priority of power industry.Country also pays much attention to the management of energy-conservation this respect, has proposed the indication in per GDP energy consumption palpus in 2010 decline 20% in Eleventh Five-Year Plan, as the compulsory execution of energy-saving index.Present industrial power distribution cabinet only has basic electric power to be carried and distribution function, then considers very littlely aspect saves energy, and especially under different power voltage and electricity consumption period situation, power distribution cabinet can not be according to the working condition adjusting of economizing on electricity.
Summary of the invention
Goal of the invention: power distribution cabinet only has the deficiency of single distributing function in the prior art in order to overcome, and the invention provides a kind of electricity saving function power distribution cabinet of voltage stabilizing that has, and distribution and electricity-saving function are integrated in one.
Technical scheme: to achieve these goals, the technical solution used in the present invention is:
A kind of have an electricity saving function power distribution cabinet of voltage stabilizing, comprises lead-in circuit breaker, voltage stabilizing power-saving module and power distribution equipment; Power supply is connected with the input of described lead-in circuit breaker, and the output of described lead-in circuit breaker connects the input of described voltage stabilizing power-saving module, and the output of described voltage stabilizing power-saving module connects the input of described power distribution equipment.
Described power supply is three phase mains.
Described voltage stabilizing power-saving module can be made up of tapped isolating transformer, bidirectional triode thyristor module and the voltage stabilizing electricity-saving intelligent control unit of polytropic ratio, and described bidirectional triode thyristor module can be made up of a plurality of bidirectional triode thyristors.The output of described lead-in circuit breaker is connected with the former limit of described isolating transformer; The secondary of described isolating transformer is every all to have a plurality of taps according to different no-load voltage ratios, and each secondary tap connects a power utmost point of a bidirectional triode thyristor respectively; Another power utmost point corresponding to the bidirectional triode thyristor of same phase links together as output, and its output voltage and electric current can send voltage stabilizing electricity-saving intelligent control unit to by sampling feedback; The output of described bidirectional triode thyristor module connects the input of described power distribution equipment; Described control unit connects the control end of described bidirectional triode thyristor module, provides triggering signal to described bidirectional triode thyristor module.
The corresponding different no-load voltage ratios of a plurality of taps of the secondary of the tapped isolating transformer of described polytropic ratio, bidirectional triode thyristor by the conducting correspondence just can be selected corresponding transformer voltage ratio, can make output voltage stabilization like this in the scope of setting, to reach the function of voltage stabilizing economize on electricity.
Described power distribution equipment is provided with testing circuit, and output voltage and electric current are detected in real time, simultaneously input voltage is carried out zero passage and catches.The input of described control unit connects the output of described testing circuit, and described control unit carries out voltage stabilizing and economize on electricity control according to the real time detection signal of described testing circuit to Voltage stabilizing module.
Described voltage stabilizing power-saving module can adopt the two zero passage handoff techniques of electric current and voltage that bidirectional triode thyristor is carried out the voltage stabilizing switching controls, to realize the function of voltage stabilizing and economize on electricity.When the input voltage zero cross signal occurs, then judge whether to need to switch the no-load voltage ratio of current bidirectional triode thyristor module, switching current no-load voltage ratio if desired then detects the output current zero cross signal, switch when no-load voltage ratio appears then carrying out in the output current zero cross signal, namely the bidirectional triode thyristor module that needs are triggered provides triggering signal.So just can guarantee after the input voltage zero passage, be that controllable silicon makes electric current reduce to zero by afterflow, just illustrates that also controllable silicon turn-offs naturally.
Described power distribution cabinet can also comprise by-pass unit, described by-pass unit and the parallel connection of described voltage stabilizing power-saving module, and power supply is connected with power distribution equipment by voltage stabilizing power-saving module or by-pass unit through lead-in circuit breaker.Described control unit can select power supply to be connected with power distribution equipment through voltage stabilizing power-saving module or by-pass unit according to live signal.
Described power distribution cabinet can also comprise and showing and man-machine interface, the electric parameter that can show each distribution line, comprise each three-phase and single-phase voltage, electric current, power and power factor etc., can realize the man-machine communication by man-machine interface, power distribution cabinet is carried out menu control or Long-distance Control, perhaps carry out automatic or manual voltage stabilizing economize on electricity and distribution operation as required.Be conducive to like this electricity consumption situation is managed and allocates, in the power distribution cabinet course of work, just can directly obtain the electricity consumption data cases, realize the energy-conservation and distribution management of electricity consumption better.
Beneficial effect: provided by the invention have an electricity saving function power distribution cabinet of voltage stabilizing, compare existing power distribution cabinet and possessed voltage stabilizing and electricity-saving function, the two zero passage handoff techniques of electric current and voltage have been adopted in use, be in operation and avoided harmonic wave and discontinuous current phenomenon, when finishing economize on electricity and distribution, carry out the stable and purification of electric power, improve power supplying efficiency, satisfy the distribution demand better.
Description of drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of voltage stabilizing power-saving module;
Fig. 3 is the link subgraph of control unit single-chip microcomputer;
Fig. 4 is voltage zero-crossing detection circuit;
Fig. 5 is the current over-zero testing circuit;
Fig. 6 is the current sample modulate circuit;
Fig. 7 is Micro Controller Unit (MCU) driving silicon controlled drive circuit figure.
Embodiment
Below in conjunction with accompanying drawing the present invention is done further explanation.
Be illustrated in figure 1 as a kind of electricity saving function power distribution cabinet of voltage stabilizing that has, comprise lead-in circuit breaker, voltage stabilizing power-saving module, power distribution equipment, by-pass unit, demonstration and man-machine interface.Three phase mains (A phase, B phase and C phase) is connected with the input of described lead-in circuit breaker, the output of described lead-in circuit breaker connects the input of described voltage stabilizing power-saving module and the input of described by-pass unit, and the output of described voltage stabilizing power-saving module is connected the input of described power distribution equipment with the output of described by-pass unit.Three-phase electricity is connected with power distribution equipment by voltage stabilizing power-saving module or by-pass unit through lead-in circuit breaker.
Described demonstration and man-machine interface, the electric parameter that can show each distribution line, comprise each three-phase and single-phase voltage, electric current, power and power factor etc., can realize the man-machine communication by man-machine interface, power distribution cabinet is carried out menu control or Long-distance Control, perhaps carry out automatic or manual voltage stabilizing economize on electricity and distribution operation as required.Be conducive to like this electricity consumption situation is managed and allocates, in the power distribution cabinet course of work, just can directly obtain the electricity consumption data cases, realize the energy-conservation and distribution management of electricity consumption better.
Described by-pass unit is made of a bypass contactor in the present embodiment.
Described voltage stabilizing power-saving module is made up of tapped isolating transformer, bidirectional triode thyristor module and the voltage stabilizing electricity-saving intelligent control unit of polytropic ratio, and described bidirectional triode thyristor module is made up of a plurality of bidirectional triode thyristors.As shown in Figure 2, through the three-phase voltage A of lead-in circuit breaker phase, B is connected the former limit of the tapped isolating transformer of polytropic ratio mutually mutually respectively with C, its secondary is every to have a plurality of taps according to different no-load voltage ratios, tap corresponding to the A phase among the figure is designated as a1～an, tap corresponding to the B phase is designated as b1～bn, tap corresponding to the C phase is designated as c1～cn, each secondary tap connects a power utmost point of a bidirectional triode thyristor respectively, link together corresponding to another power utmost point of n the bidirectional triode thyristor of tap a1～an and to be designated as output terminals A O, linking together corresponding to another power utmost point of n the bidirectional triode thyristor of tap b1～bn is designated as output BO, and linking together corresponding to another power utmost point of n the bidirectional triode thyristor of tap c1～cn is designated as output CO.The output voltage of AO, BO and CO and electric current send voltage stabilizing electricity-saving intelligent control unit to by sampling feedback; The output of described bidirectional triode thyristor module, namely AO, BO are connected the input of described power distribution equipment with CO; Described voltage stabilizing electricity-saving intelligent control unit connects the control end of described bidirectional triode thyristor module, provides triggering signal to described bidirectional triode thyristor module.
The corresponding different no-load voltage ratios of a plurality of taps of the secondary of the tapped isolating transformer of described polytropic ratio, in the present embodiment, different no-load voltage ratios and corresponding different gear, the more big then gear of no-load voltage ratio is more high, output voltage is also just more big, bidirectional triode thyristor by the conducting correspondence just can be selected corresponding transformer voltage ratio, can make output voltage stabilization like this in the scope of setting, to reach the function of voltage stabilizing economize on electricity.
Described power distribution equipment is provided with testing circuit, and output voltage and electric current are detected in real time, simultaneously input voltage is carried out zero passage and catches.The input of described voltage stabilizing electricity-saving intelligent control unit connects the output of described testing circuit, voltage stabilizing electricity-saving intelligent control unit carries out voltage stabilizing and economize on electricity control according to the real time detection signal of described testing circuit to Voltage stabilizing module, perhaps directly selects by-pass unit to carry out distribution.
Described voltage stabilizing power-saving module can adopt the two zero passage handoff techniques of electric current and voltage that bidirectional triode thyristor is carried out the voltage stabilizing switching controls, to realize the function of voltage stabilizing and economize on electricity.When the three-phase input voltage zero cross signal occurs, judge whether to need to switch the gear of current bidirectional triode thyristor: do not need gearshift if judge, the controllable silicon that continues one-period conducting in the conducting is described, provide the conducting of conducting triggering signal corresponding bidirectional triode thyristor by voltage stabilizing economize on electricity control unit, make the bidirectional triode thyristor zero cross fired; Need gearshift if judge, will carry out the zero cross signal detection to current output current earlier (can not directly provide the conducting of conducting triggering signal required gearshift bidirectional triode thyristor, because being nature, the characteristic of controllable silicon itself turn-offs, if the bidirectional triode thyristor in original conducting before the bidirectional triode thyristor conducting of new conducting does not turn-off, then can cause the short circuit phenomenon of transformer secondary.), when appearring then carrying out in the output current zero cross signal, no-load voltage ratio switches, and namely the bidirectional triode thyristor module that needs are triggered provides triggering signal.So just can guarantee after the input voltage zero passage, be that controllable silicon makes electric current reduce to zero by afterflow, just illustrates that also controllable silicon turn-offs naturally.
Described voltage stabilizing electricity-saving intelligent control unit can be that core is finished the control to the voltage stabilizing power-saving module with single-chip microcomputer as shown in Figure 3.
Fig. 4 is voltage zero-crossing detection circuit, and UA is A phase voltage sampled signal, through voltage zero-crossing detection circuit, obtains the voltage zero-crossing signal of UA_Z, and voltage zero-crossing signal is delivered in the single-chip microcomputer of control unit shown in Figure 3.
Fig. 5 is the current over-zero testing circuit, and IA is A phase current sampling signal, and through the current over-zero testing circuit, anti-phase amplification earlier relatively obtains the current zero-crossing signal of IA_Z again, and current zero-crossing signal is delivered in the single-chip microcomputer of control unit shown in Figure 3.B is mutually identical with A with the current over-zero testing circuit of C phase mutually.
Fig. 6 is that electric current adopts modulate circuit, and IA is A phase current sampling signal, and can obtain amplitude through the current sample modulate circuit is that the analog signal IAC_AD of 0-3.3V delivers in the single-chip microcomputer of control unit shown in Figure 3 and carries out mould/number conversion.B is mutually identical with A with the current sample modulate circuit of C phase mutually.
Fig. 7 is the Micro Controller Unit (MCU) driving silicon controlled drive circuit figure of control unit, and the single-chip microcomputer signal triggers corresponding with it controllable silicon through overdrive circuit.As shown in Figure 7, drive triode BC337 from the Single-chip Controlling enable signal CTR_EN of control unit, power supply is provided for optocoupler TLP3052, RB2 ' links to each other with the R2 lower end, the drive control signal of sending for single-chip microcomputer is by the break-make of this signal controlling optocoupler U3 and U4, when optocoupler U3 and U4 are communicated with then its inner bidirectional triode thyristor conducting, if exist voltage between link B2 and the LOADB this moment, then B2G2 makes the bidirectional triode thyristor conducting among the SK2.Realize that control unit drives silicon controlled.
The voltage stabilizing power-saving module can carry out the voltage stabilizing power-saving running by following four kinds of working methods:
(1) time+voltage control: power distribution cabinet timing start-up every day and shutdown work and according to the automatic regulation stall control of the required voltage of voltage stabilizing economize on electricity operation;
(2) time is forced gear control: power distribution cabinet timing start-up every day and shutdown work and in a certain fixing gear operation;
(3) 24 hours voltage control: automatic regulation stall control runs without interruption power distribution cabinet continuously according to the required voltage of voltage stabilizing economize on electricity;
Forced gear control in (4) 24 hours: power distribution cabinet remains on a certain fixing gear operation always.
The voltage stabilizing power-saving module in the course of the work, the three-phase output voltage detection signal enters voltage stabilizing electricity-saving intelligent control unit through after conditioning, filtering and the mould/number conversion, the single-chip microcomputer of voltage stabilizing electricity-saving intelligent control unit calculates effective value to three-phase voltage and obtains 5 seconds slippage mean value, calculate the magnitude of voltage of each grade simultaneously according to the different transformation-ratio meters of transformer, gear is judged and moved according to corresponding working method, and conducting bidirectional triode thyristor as required.
Described lead-in circuit breaker adopts circuit breaker or miniature circuit breaker (being air switch), and power distribution equipment also adopts miniature circuit breaker that power load is carried out distribution.
The above only is preferred implementation of the present invention; be noted that for those skilled in the art; under the prerequisite that does not break away from the principle of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (2)
1. power distribution cabinet, described power distribution cabinet comprises lead-in circuit breaker, voltage stabilizing power-saving module, power distribution equipment and by-pass unit, it is characterized in that:
Power supply is connected with the input of described lead-in circuit breaker, and the output of described lead-in circuit breaker connects the input of described voltage stabilizing power-saving module, and the output of described voltage stabilizing power-saving module connects the input of described power distribution equipment;
Described voltage stabilizing power-saving module is made up of tapped isolating transformer, bidirectional triode thyristor module and the voltage stabilizing electricity-saving intelligent control unit of polytropic ratio, described bidirectional triode thyristor module is made up of a plurality of bidirectional triode thyristors, the output of described lead-in circuit breaker is connected with the former limit of described isolating transformer, the secondary of described isolating transformer connects the input of bidirectional triode thyristor module, described voltage stabilizing electricity-saving intelligent control unit connects the control end of described bidirectional triode thyristor module, and the output of described bidirectional triode thyristor module connects the input of described power distribution equipment;
The output of described lead-in circuit breaker also connects the input of described by-pass unit, and the output of described voltage stabilizing power-saving module also connects the output of described by-pass unit, makes described by-pass unit and the parallel connection of described voltage stabilizing power-saving module;
Described power distribution equipment is provided with the testing circuit that output voltage and output current are detected in real time, and the input of described voltage stabilizing electricity-saving intelligent control unit connects the output of described testing circuit; Described voltage stabilizing electricity-saving intelligent control unit adopts the two zero passage handoff techniques of electric current and voltage that the bidirectional triode thyristor module is carried out the voltage stabilizing switching controls;
Described output voltage and output current send voltage stabilizing electricity-saving intelligent control unit to by sampling feedback, voltage stabilizing electricity-saving intelligent control unit carries out voltage stabilizing and economize on electricity control according to the above-mentioned voltage and current signal that described testing circuit detects in real time to the voltage stabilizing power-saving module, perhaps directly selects by-pass unit to control.
2. power distribution cabinet according to claim 1 is characterized in that: described power distribution cabinet also comprises and showing and man-machine interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2010101764688A CN101847831B (en) | 2010-05-18 | 2010-05-18 | Power distribution cabinet |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010101764688A CN101847831B (en) | 2010-05-18 | 2010-05-18 | Power distribution cabinet |
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| CN101847831A CN101847831A (en) | 2010-09-29 |
| CN101847831B true CN101847831B (en) | 2013-08-28 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102457062A (en) * | 2010-11-01 | 2012-05-16 | 珠海科达信电子科技有限公司 | Multifunctional integrated power stabilizer |
| CN103094845B (en) * | 2011-11-04 | 2014-12-17 | 江苏普瑞特科技股份有限公司 | Intelligent power-saving inlet wire main cabinet |
| CN104810824A (en) * | 2014-01-26 | 2015-07-29 | 江苏普瑞特科技股份有限公司 | Electrified switching device for an energy-saving cabinet |
| CN105337285A (en) * | 2015-10-28 | 2016-02-17 | 安徽华特绿源节能环保科技有限公司 | Power supply system electromagnetic power-saving device |
| CN105375486A (en) * | 2015-11-17 | 2016-03-02 | 成都科创佳思科技有限公司 | Novel voltage stabilization power distribution system |
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| CN2160937Y (en) * | 1993-06-21 | 1994-04-06 | 舒正芳 | Multi-stage compensated ac electric power stabilizer |
| CN2826896Y (en) * | 2005-08-02 | 2006-10-11 | 青岛扬志环境能源技术设备有限公司 | Energy-saving power distribution cabinet |
| CN2865081Y (en) * | 2005-11-23 | 2007-01-31 | 林琳 | Low-voltage distribution cabinet with display control panel |
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Denomination of invention: Distribution cabinet Effective date of registration: 20200121 Granted publication date: 20130828 Pledgee: Bank of Communications Ltd. Wuxi branch Pledgor: JIANGYIN SFERE ELECTRIC Co.,Ltd. Registration number: Y2020320010004 |
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