CN201117417Y - Flow equalizing autotransformer and automatic pressure regulating three phase balancing electricity saver - Google Patents
Flow equalizing autotransformer and automatic pressure regulating three phase balancing electricity saver Download PDFInfo
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- CN201117417Y CN201117417Y CNU2007201831135U CN200720183113U CN201117417Y CN 201117417 Y CN201117417 Y CN 201117417Y CN U2007201831135 U CNU2007201831135 U CN U2007201831135U CN 200720183113 U CN200720183113 U CN 200720183113U CN 201117417 Y CN201117417 Y CN 201117417Y
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Abstract
The utility model relates to a current equalizing auto-transformer; each phase of winding consists of series windings, parallel windings and voltage-regulating windings; at least 3 parallel windings and 3 series windings of each phase of winding are arranged; each phase of winding is provided with a parallel winding and a series winding which are wound on the iron core of the same adjacent winding with the same turn number and in the opposite directions; the three phases of voltage regulating windings are respectively provided with voltage regulating taps; the voltage regulating tap of each phase of voltage regulating winding is connected with a voltage regulating contact. In an electricity economizer, the input and the output of the current equalizing auto-transformer are respectively connected with a voltage sensor; the input of the current equalizing auto-transformer is also connected with a current sensor; the voltage sensor and the current sensor are connected with a CPU control unit by AD conversion modules; the CPU control unit respectively controls the action of the voltage regulating contacts by an output control relay unit. The device can effectively balance three phases of current and voltage, and reduce the zero current.
Description
Technical field
But the utility model relates to a kind of in order to the current-sharing autotransformer of balanced three-phase voltage, electric current and the three-phase equilibrium electricity-saving appliance of automatic Regulation.
Background technology
At present used autotransformer generally all can only change voltage and not possess the effect of balance three-phase output voltage, electric current, and tri-phase unbalance factor is bigger, and the operate as normal to load causes adverse effect easily.In addition, low pressure on market economize on electricity product mainly is the economize on electricity that the concrete electrical appliance of adjustable speeds such as the blower fan that drives at low-tension motor, water pump, air compressor machine is implemented, and is not suitable for mixed load.Therefore inapplicable for numerous mixed load units such as industrial and mining enterprises, hotels, power savings is not obvious.
The utility model content
The purpose of this utility model is to provide a kind of current-sharing autotransformer, and it is simple in structure, be easy to make, and balance three-phase output voltage, electric current effectively, control surge and reduce the starting current and the no-load current of motor reduces the influence to load.
But another purpose of the present utility model provides a kind of three-phase equilibrium electricity-saving appliance of automatic Regulation, not only can the balance three-phase output voltage, electric current, and be applicable to mixed load economized on electricity that power savings is good.
The purpose of this utility model is achieved in that a kind of current-sharing autotransformer, comprise iron core, pressure regulation contactor and three phase windings, every phase winding constitutes by series connection winding, winding in parallel and pressure regulation winding, the number of winding in parallel in every phase winding and series connection winding all is at least 3 respectively, all have in every phase winding a winding in parallel and one series connection winding on the iron core of same adjacent winding and the equal turn numbers direction opposite, all have tap changer on the three phase voltage regulating winding respectively, the tap changer on every phase pressure regulation winding all links to each other with a pressure regulation contactor.
But a kind of three-phase equilibrium electricity-saving appliance that comprises the automatic Regulation of described current-sharing autotransformer, the input of this current-sharing autotransformer all links to each other with voltage sensor with output, the input of this current-sharing autotransformer also links to each other with a current sensor by current transformer, said voltage sensor all links to each other with the CPU control unit by the AD modular converter with current sensor, and the CPU control unit is controlled said each pressure regulation contactor action respectively by the output control relay unit.
Because the number of winding in parallel in the every phase winding of the utility model current-sharing autotransformer and series connection winding all is at least 3 respectively, all have in every phase winding a winding in parallel and one series connection winding on the iron core of same adjacent winding and the equal turn numbers direction opposite, this winding mode is similar to equalizing reactor, can make the current-sharing autotransformer when changing voltage, realize the purpose of balanced three-phase current and voltage, reduce zero-sequence current, reduce the using electricity system degree of unbalance.Because the series connection winding of this transformer is to be connected on continuous operation on the main circuit for a long time, promptly be equivalent to be connected on " reactor " in the circuit, and high order harmonic component is to be difficult to pass through " reactor ", so, this transformer can also filter a part of high order harmonic component, thereby improves capacity utilization, reduces the iron loss of power-equipment, reducing the supplementary load loss of transmission line, still is the buffer of electrical network surge and flickering simultaneously.This transformer device structure is simple, is easy to make, and balance three-phase output voltage, electric current effectively, control surge and reduce the starting current and the no-load current of motor reduces the influence to load, and is easy to use.
When the utility model electricity-saving appliance uses, gather the input voltage of current-sharing autotransformer and output voltage respectively and it is become voltage analog signal by voltage sensor, gather the input current of current-sharing autotransformer and it is become current analog signal by current transformer by current sensor, voltage analog signal and current analog signal carry out becoming digital signal after the analog-to-digital conversion through the AD modular converter, by CPU the digital signal of coming of sampling is in time handled judgement again, actual voltage value and predefined magnitude of voltage are compared, output signal is by the action of output control relay unit controls pressure regulation contactor then, because the pressure regulation contactor contacts with tap changer on the current-sharing autotransformer pressure regulation winding, the action of pressure regulation contactor just can change the total number of turns of current-sharing autotransformer excitation winding like this, thereby makes the approaching all the time setting voltage value of setting in advance of output voltage of electricity-saving appliance.The utility model is regulated superfluous voltage output ordinary telegram and is pressed by adjusting the balance of three-phase current and voltage, improves power factor, suppresses high order harmonic component, has tangible power savings, and general power saving rate is all about 8%～20%.This electricity-saving appliance is implemented economize on electricity at using electricity system, only needs the electricity-saving appliance of low-pressure end series connection at main transformer, and just all loads to this transformer rear end have all realized economize on electricity, simple installation, it is little to take up room, easy to maintenance, be applicable to the user of mixed load widely, have bigger customer group.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing.
Fig. 1 is the coil windings schematic diagram of the utility model current-sharing autotransformer;
Fig. 2 is the syndeton schematic diagram of the utility model electricity-saving appliance and autotransformer.
Embodiment
A kind of current-sharing autotransformer, as shown in Figure 1, comprise iron core, pressure regulation contactor and three phase winding A, B, C, every phase winding constitutes by series connection winding 1, winding in parallel 2 and pressure regulation winding 3, the number of winding in parallel 2 in every phase winding and series connection winding 1 all is at least 3 respectively, all have in every phase winding a winding 2 in parallel and series connection winding 1 on the iron core of same adjacent winding and the equal turn numbers direction opposite.This winding mode is similar to equalizing reactor, can make the current-sharing autotransformer when changing voltage, realizes the purpose of balanced three-phase current and voltage, reduces zero-sequence current, reduces the using electricity system degree of unbalance.All have tap changer on the three phase voltage regulating winding 3 respectively, the tap changer on every phase pressure regulation winding all links to each other with a pressure regulation contactor.
As shown in Figure 1, be example explanation mutually with A: A has 3 windings 2 in parallel and 3 series connection windings 1 mutually, a winding is all arranged around B mutually on the iron core in the winding 2 wherein in parallel and the winding 1 of connecting, and the equal turn numbers direction is opposite; Regulating winding 3 need not intersect, and just extracts several out and regulate taps on this winding, works respectively by instruction for contactor KM1-KM3, regulating the total number of turns of static exciter coil, thereby reaches the purpose of control output voltage.
But a kind of three-phase equilibrium electricity-saving appliance that comprises the automatic Regulation of described current-sharing autotransformer, as shown in Figure 2, the input of this current-sharing autotransformer all links to each other with voltage sensor with output, the input of this current-sharing autotransformer also links to each other with a current sensor by current transformer, said voltage sensor all links to each other with the CPU control unit by the AD modular converter with current sensor, and the CPU control unit is controlled said each pressure regulation contactor KM1-KMn respectively by the output control relay unit and moved respectively.
When this electricity-saving appliance uses, gather the input voltage of current-sharing autotransformer and output voltage respectively and it is become the 0-5V voltage analog signal by voltage sensor, gather the input current of current-sharing autotransformer and it is become current analog signal by current transformer by current sensor, voltage analog signal and current analog signal carry out becoming digital signal after the analog-to-digital conversion through the AD modular converter, by the CPU control unit data of coming of sampling are in time handled judgement again, actual voltage value and predefined magnitude of voltage are compared, output signal is moved respectively by each pressure regulation contactor KM1-KMn of output control relay unit controls then, because pressure regulation contactor KM1-KMn contacts with tap changer on the current-sharing autotransformer pressure regulation winding 3, pressure regulation contactor KM1-KMn action just can change the total number of turns of current-sharing autotransformer excitation winding like this, thereby makes the approaching all the time setting voltage value of setting in advance of output voltage of electricity-saving appliance.
In addition, the CPU control unit of this electricity-saving appliance is also connecting temperature sensor, LED display and alarm unit respectively, detects in real time by the temperature of temperature sensor to transformer.CPU in time shows the real time data (comprising voltage, electric current and temperature etc.) that sampling comes on LED display simultaneously.Alarm unit carries out power line carrier, PLC by power line, and the CPU control unit sends to alarm terminal to the data that sample by power carrier, and alarm terminal is analyzed the information of receiving, and data are shown, in case there is unusual condition in time to report to the police.
Claims (2)
1, a kind of current-sharing autotransformer, comprise iron core, pressure regulation contactor and three phase windings, every phase winding constitutes by series connection winding, winding in parallel and pressure regulation winding, it is characterized in that: the number of winding in parallel in every phase winding and series connection winding all is at least 3 respectively, all have in every phase winding a winding in parallel and one series connection winding on the iron core of same adjacent winding and the equal turn numbers direction opposite, all have tap changer on the three phase voltage regulating winding respectively, the tap changer on every phase pressure regulation winding all links to each other with a pressure regulation contactor.
But 2, a kind of three-phase equilibrium electricity-saving appliance that comprises the automatic Regulation of the described current-sharing autotransformer of claim 1, it is characterized in that: the input of this current-sharing autotransformer all links to each other with voltage sensor with output, the input of this current-sharing autotransformer also links to each other with a current sensor by current transformer, said voltage sensor all links to each other with the CPU control unit by the AD modular converter with current sensor, and the CPU control unit is controlled said each pressure regulation contactor action respectively by the output control relay unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201831135U CN201117417Y (en) | 2007-10-29 | 2007-10-29 | Flow equalizing autotransformer and automatic pressure regulating three phase balancing electricity saver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201831135U CN201117417Y (en) | 2007-10-29 | 2007-10-29 | Flow equalizing autotransformer and automatic pressure regulating three phase balancing electricity saver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201117417Y true CN201117417Y (en) | 2008-09-17 |
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ID=39991995
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201831135U Expired - Fee Related CN201117417Y (en) | 2007-10-29 | 2007-10-29 | Flow equalizing autotransformer and automatic pressure regulating three phase balancing electricity saver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201117417Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102545249A (en) * | 2012-03-07 | 2012-07-04 | 河北森蔚电气科技有限公司 | Dynamic balance energy system optimizing device |
| CN101777866B (en) * | 2009-01-12 | 2012-11-07 | 戴如宏 | High-voltage power-saving voltage regulator |
-
2007
- 2007-10-29 CN CNU2007201831135U patent/CN201117417Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101777866B (en) * | 2009-01-12 | 2012-11-07 | 戴如宏 | High-voltage power-saving voltage regulator |
| CN102545249A (en) * | 2012-03-07 | 2012-07-04 | 河北森蔚电气科技有限公司 | Dynamic balance energy system optimizing device |
| CN102545249B (en) * | 2012-03-07 | 2014-04-02 | 河北森蔚电气科技有限公司 | Dynamic balance energy system optimizing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080917 Termination date: 20101029 |