CN2431582Y - Automatic voltage step compensator - Google Patents
Automatic voltage step compensator Download PDFInfo
- Publication number
- CN2431582Y CN2431582Y CN 00218299 CN00218299U CN2431582Y CN 2431582 Y CN2431582 Y CN 2431582Y CN 00218299 CN00218299 CN 00218299 CN 00218299 U CN00218299 U CN 00218299U CN 2431582 Y CN2431582 Y CN 2431582Y
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- voltage
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- elementary winding
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Abstract
The utility model relates to an automatic voltage step compensator. The utility model is characterized in that the automatic voltage step compensator comprises at least one compensation transformer and a plurality of alternating current contactors which are connected with the compensation transformer. The compensation transformer comprises two primary windings which are uniform completely and a secondary winding which is connected in series with a phase wire loop of a low-voltage network, and contacts of the alternating current contactors are connected with the primary windings. The voltage regulating process of each phase is completed by adopting the compensation transformer. When the voltage is lower than the lowest permitted voltage, the automatic voltage step compensator can compensate the voltage by upgrading automatically; when the voltage is higher than the highest permitted voltage, the automatic voltage step compensator can compensate the voltage by degrading automatically; when the voltage is within the allowed range, the automatic voltage step compensator has no gradation and also has no degradation. The purpose of acting automatically the proper compensation at the right and left of the rated voltage is reached.
Description
The utility model relates to a kind of voltage self-checking device, relates in particular to a kind of automatic grading compensation device of voltage of the voltage that automatically adjusts among a small circle.
In low voltage power distribution network, generally all exist the situation of voltage deviation consuming device rated voltage.The amplitude of voltage deviation rated voltage with season and day and night electric load change, be generally ± 10%, some area is up to 20%.And the change in voltage scope that consuming device allows is generally ± 5%, some, then requires in ± 3% as illumination etc. the consuming device of voltage-sensitive.Voltage is undesired, and the lighter influences the serviceable life of electrical equipment, and weight person will burn electrical equipment, even the expansion that also can cause the accident.Low voltage power distribution network is the 380V/220 volt in China, and voltage is undesired except influencing industrial and mining enterprises' electricity consumption, also relates to the safety of huge numbers of families' household electrical appliance.Therefore, in low voltage power distribution network, the change in voltage scope being exceeded the area of rated voltage ± 5%, take the local an amount of compensation of voltage, is the simplest, economy, effective measures.
Present existing automatic pressure regulating device, a kind of is that the link position that changes tap in the high-pressure side of power transformer automatically carries out pressure regulation.Another kind is to seal in compensating coil in low voltage power distribution network, and utilizes servomotor drive brush to change bucking voltage in exposed winding surface slip.Though above dual mode all can reach the effect of pressure regulation, operational reliability is all lower, and cost is higher.
The purpose of this utility model is exactly the shortcoming that has voltage compensator now in order to overcome, and a kind of automatic grading compensation device of voltage of about rated voltage, doing an amount of compensation that aims at that proposes.
The purpose of this utility model is achieved in that the automatic grading compensation device of voltage, is characterized in, comprising: the compensator transformer and a plurality of A.C. contactors that are connected with this compensator transformer that are serially connected in the phase line loop of low-voltage network; Described compensator transformer comprises: two identical elementary windings and are serially connected in the secondary winding of the line loop mutually of low-voltage network; Described each A.C. contactor has a contact to be connected with elementary winding.
The automatic grading compensation device of above-mentioned voltage, wherein, the A.C. contactor that one compensator transformer of described and the line loop mutually that is serially connected in low-voltage network connects has seven, and a contact and the elementary winding ways of connecting of each A.C. contactor are: a contact of first A.C. contactor is connected between the input end of the output terminal of the first elementary winding and the second elementary winding; Between the input end end of the same name that a contact of second A.C. contactor is connected two elementary windings; Between the output terminal end of the same name that a contact of the 3rd A.C. contactor is connected two elementary windings; A contact of the 4th A.C. contactor is connected between the output terminal and phase line of the second elementary winding; A contact of the 5th A.C. contactor is connected between the input end and phase line of the first elementary winding; A contact of the 6th A.C. contactor is connected between the output terminal and the neutral line of the second elementary winding; A contact of the 7th A.C. contactor is connected between the input end and the neutral line of the first elementary winding.
Because the utility model has adopted above structure, every process of finishing pressure regulation by a compensator transformer, when voltage is lower than minimum permission voltage, the utility model can rise the one-level bucking voltage automatically, if after rising a step voltage, occur voltage again and be lower than minimum permission voltage condition, then can rise the one-level bucking voltage automatically again; When voltage was higher than maximum permissible voltage, the one-level bucking voltage can fall in the utility model automatically, if after falling a step voltage, occur the situation that voltage is higher than maximum permissible voltage again, then can fall the one-level bucking voltage automatically again; When voltage did not hang down also not high (voltage within the range of permission), the utility model did not rise yet and does not fall, and was referred to as meaning " leading directly to ".That is to say the utlity model has and rise second gear, fall second gear and lead directly to five grades of voltage regulation functions of level.
The concrete structure of this practicality is further provided by following embodiment machine accompanying drawing.
Fig. 1 is the electrical block diagram of a kind of embodiment of the utility model.
See also accompanying drawing.This is to be the circuit structure that example is carried out pressure regulation with the single-phase voltage.Comprise: the compensator transformer and a plurality of A.C. contactors that are connected with this compensator transformer that are serially connected in the phase line loop of low-voltage network; Described compensator transformer comprises: two identical elementary winding 1-1,1-2 and are serially connected in the secondary winding 2 of the L of line loop mutually of low-voltage network; Described each A.C. contactor K respectively has a contact to be connected with elementary winding.N is the neutral line.
The secondary winding of compensator transformer seals in the phase line loop of low-voltage network, and the front of secondary winding is a power end, also claims input end, and the back of secondary winding is a load end, also claims output terminal.The electric power of the elementary winding of compensator transformer is by obtaining in the low-voltage network, it should be the phase voltage of network, in China is 220 volts, be to return low voltage power distribution network behind the electric power of bucking voltage through step-down, power consumption only is the open circuit loss and the load loss of compensator transformer itself, because maximum bucking voltage is generally rated voltage ± 10%, so the capacity of compensator transformer only is 10% of a distribution capacity, therefore, the loss of compensator transformer proportion in distribution capacity own is minimum.As the efficient in compensator transformer is 0.95, then loss is 1-0.95=0.05, for distribution capacity, be 0.005 then, that is to say, the efficient of the automatic grading compensation device of voltage can reach 99.5% (1-0.005), if the normal the utility model of voltage is in " lead directly to " grade, or when only compensating 1 grade, the loss of compensator transformer is littler, efficient can be higher, and efficient can reach more than 99.5% thus.
The utility model can be realized five grades of voltage regulation functions by contactor K.According to electrical principles, output voltage U
2With input voltage U
1Exist following relation:
U
2=U
1±ΔU
Δ U is a bucking voltage.It is relevant with the connected mode of the elementary winding of compensator transformer.As two elementary windings in series being connected the phase voltage of back forward access networks, then can obtain a bucking voltage with network phase voltage homophase, be referred to as to call a unit positive bucking voltage, if oppositely access then obtains a reverse compensation voltage.In addition, as with the phase voltage of access network forward or backwards after two elementary winding parallel connections, then can obtain two unit positives or reverse compensation voltage.If two elementary windings are access network not, and makes it short circuit, then bucking voltage is zero, i.e. U
2=U
1The utility model promptly is to have determined five kinds of connected mode states with contactor according to above-mentioned principle,
The automatic grading compensation device of the utility model voltage, wherein, the A.C. contactor that one compensator transformer of described and the line loop mutually that is serially connected in low-voltage network connects has seven, and a contact and the elementary winding ways of connecting of each A.C. contactor are: the contact 1K-1 of the first A.C. contactor K1 is connected between the input end of the output terminal of the first elementary winding 1-1 and the second elementary winding 1-2; Between the input end end of the same name that the contact 2K-1 of the second A.C. contactor K2 is connected two elementary windings; Between the output terminal end of the same name that the contact 3K-1 of the 3rd A.C. contactor K3 is connected two elementary windings; The contact 4K-1 of the 4th A.C. contactor K4 is connected between the output terminal and phase line of the second elementary winding; The contact 5K-1 of the 5th A.C. contactor K5 is connected between the input end and phase line of the first elementary winding; The contact 6K-1 of the 6th A.C. contactor K6 is connected between the output terminal and the neutral line of the second elementary winding; The contact 7K-1 of the 7th A.C. contactor K7 is connected between the input end and the neutral line of the first elementary winding.
The utility model can be finished following action:
1, straight-through shelves: K1～K3 action, K4～K7 is failure to actuate.This moment 1K-1,2K-1,3K-1 Third Mate main contact closure makes elementary winding short circuit; 4K-1,5K-1,6K-1, four pairs of main contacts of 7K-1 disconnect, and make not access network of elementary winding, so bucking voltage is zero, are referred to as meaning " straight-through shelves ".
2, I shelves: K1 action is fallen, 1K-1 main contacts closure, and K2, K3 are failure to actuate, 2K-1, the 3K-1 main contacts disconnects, and elementary windings in series connects; K5, K6 action, 5K-1,6K-1 main contact closure; K4, K7 are failure to actuate, 4K-1, and the 7K-1 main contacts disconnects.Make elementary winding forward access network phase voltage, obtain a unit positive bucking voltage on secondary winding, output voltage is referred to as meaning " falling the I shelves " than the low unit bucking voltage of input voltage.
3, fall the II level: be that with the difference of above-mentioned two actions K1 is failure to actuate, the 1K-1 main contacts disconnects; K2, K3 action, 2K-1,3K-1 main contacts closure.Elementary winding changes over and is connected in parallel.Get two unit positive bucking voltages on the secondary winding, output voltage is referred to as meaning " falling the II level " than low two the unit bucking voltages of input voltage.
4, rise the I shelves: be that with the difference of above-mentioned action K5, K6 are failure to actuate, 5K-1, the 6K-1 main contacts disconnects; K4, K7 action, 4K-1,7K-1 main contacts closure.Make the anti-phase access network phase voltage of elementary winding, obtain a unit reverse compensation voltage on secondary winding, output voltage is referred to as meaning " rising the I shelves " than the high unit bucking voltage of input voltage.
5, rise the II shelves: be with the difference of above-mentioned action that elementary winding changes over by connecting and be connected in parallel, be that K1 is failure to actuate, the 1K-1 main contacts disconnects, K2, K3 action, 2K-1, therefore 3K-1 main contacts closure obtains two reverse compensation voltages on secondary winding, output voltage is referred to as meaning " rising the II shelves " than the individual unit of input voltage Senior Two bucking voltage.
The switching of A.C. contactor is to be undertaken by the instruction of output voltage, as long as output voltage exceeds the highest Minimum Acceptable Value of setting, the switching by contactor makes it to return within the permissible value.The handoff procedure of gearshift is finished in 2 cycles (40ms).The technology that automaticallyes switch is a prior art, and the utility model is no longer narrated.
If the utility model uses the occasion in three-phase electricity, as long as then with serial connection one compensator transformer and connected each A.C. contactor in every phase electrical network phase line, its operating principle is identical with use in single phase poaer supply, so do not describe in detail.
The utility model is simple in structure, uses reliably, and the voltage that can move certainly about rated voltage compensates in right amount.
Claims (2)
1, the automatic grading compensation device of voltage is characterized in that, comprising: the compensator transformer and a plurality of A.C. contactors that are connected with this compensator transformer that are serially connected in the phase line loop of low-voltage network; Described compensator transformer comprises: two identical elementary windings and are serially connected in the secondary winding of the line loop mutually of low-voltage network; Described each A.C. contactor has a contact to be connected with elementary winding.
2, the automatic grading compensation device of voltage according to claim 1, it is characterized in that, the A.C. contactor that one compensator transformer of described and the line loop mutually that is serially connected in low-voltage network connects has seven, and a contact and the elementary winding ways of connecting of each A.C. contactor are: a contact of first A.C. contactor is connected between the input end of the output terminal of the first elementary winding and the second elementary winding; Between the input end end of the same name that a contact of second A.C. contactor is connected two elementary windings; Between the output terminal end of the same name that a contact of the 3rd A.C. contactor is connected two elementary windings; A contact of the 4th A.C. contactor is connected between the output terminal and phase line of the second elementary winding; A contact of the 5th A.C. contactor is connected between the input end and phase line of the first elementary winding; A contact of the 6th A.C. contactor is connected between the output terminal and the neutral line of the second elementary winding; A contact of the 7th A.C. contactor is connected between the input end and the neutral line of the first elementary winding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00218299 CN2431582Y (en) | 2000-07-06 | 2000-07-06 | Automatic voltage step compensator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00218299 CN2431582Y (en) | 2000-07-06 | 2000-07-06 | Automatic voltage step compensator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2431582Y true CN2431582Y (en) | 2001-05-23 |
Family
ID=33583710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00218299 Expired - Lifetime CN2431582Y (en) | 2000-07-06 | 2000-07-06 | Automatic voltage step compensator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2431582Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009079900A1 (en) * | 2007-12-10 | 2009-07-02 | Yue Zhang | High-voltage power supply for a static-precipitator |
| CN1833262B (en) * | 2003-05-30 | 2012-03-28 | Adcdsl系统公司 | Input voltage sense circuit in a line powered network element |
| CN103427662A (en) * | 2012-05-16 | 2013-12-04 | 上海鑫扬电器有限公司 | 35 KV step-down transformer with grading compensation and automatic voltage adjusting functions |
| CN103699162A (en) * | 2013-11-30 | 2014-04-02 | 刘建平 | Zigzag phase shifting voltage regulating transformer |
-
2000
- 2000-07-06 CN CN 00218299 patent/CN2431582Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1833262B (en) * | 2003-05-30 | 2012-03-28 | Adcdsl系统公司 | Input voltage sense circuit in a line powered network element |
| WO2009079900A1 (en) * | 2007-12-10 | 2009-07-02 | Yue Zhang | High-voltage power supply for a static-precipitator |
| CN101653746B (en) * | 2007-12-10 | 2012-05-30 | 张跃 | High-voltage power supply of electrostatic dust collector |
| CN103427662A (en) * | 2012-05-16 | 2013-12-04 | 上海鑫扬电器有限公司 | 35 KV step-down transformer with grading compensation and automatic voltage adjusting functions |
| CN103699162A (en) * | 2013-11-30 | 2014-04-02 | 刘建平 | Zigzag phase shifting voltage regulating transformer |
| CN103699162B (en) * | 2013-11-30 | 2015-05-20 | 刘建平 | Zigzag phase shifting voltage regulating transformer |
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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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20010523 |