CN2276680Y - Reactive power compensating gear - Google Patents
Reactive power compensating gear Download PDFInfo
- Publication number
- CN2276680Y CN2276680Y CN 96213705 CN96213705U CN2276680Y CN 2276680 Y CN2276680 Y CN 2276680Y CN 96213705 CN96213705 CN 96213705 CN 96213705 U CN96213705 U CN 96213705U CN 2276680 Y CN2276680 Y CN 2276680Y
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- CN
- China
- Prior art keywords
- compensator
- compensation
- electric capacity
- weighting
- reactive power
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- Expired - Fee Related
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Abstract
The utility model discloses a reactive power compensating device use for the electricity supplying and distribution. The utility model is composed of a servo compensator, a weighted capacitance compensation device, a large step capacitor set, a controller, etc., wherein, the servo compensator is composed of a voltage regulator or an autotransformer, a capacitor, and a servo electric mechanism; the weighted capacitance compensation device is composed of a plurality of capacitors, and the large step capacitor set is composed of a plurality of capacitor sets; the average power factor can controlled at more than 0.99, and the fluctuation amount is not more than 0.04. the utility model has the advantages of simple structure and low cost. The system inductive reactive power approaches zero in one way only by the capacitance compensation, and the reactive power changing frequency of the electricity supplying and distributing system can be decreased to the minimal level. The utility model is suitable for various electric devices, power consuming enterprises, and changing and distributing stations.
Description
The utility model relates to the reactive power compensating apparatus that a kind of confession, distribution system are used.
Reactive power to electrical network or power equipment compensates, and the raising power factor is energy-conservation and improves the important means of power supply quality.Present China electrical network is low voltage electric network especially, and power factor is lower, causes the waste of the energy and power supply unit, and therefore, improving power factor is the energy-conservation important method of taping the latent power.And existing silent oscillation capacitor compensation equipment, from control method have manually, electronic controller controls several classes such as Single-chip Controlling.Actuator is for waiting ladder capacitor switching, and thyristor controlled reactor is followed the tracks of compensation.Its controller generally adopts the input and the excision of power factor or reactive power, reactive current mode control compensation electric capacity, can not realize following the tracks of fast and level and smooth compensation.And with the compensation method of thyristor controlled reactor, cost height, shock-resistant poor is big to Disturbance in Power Net.
The purpose of this utility model is to provide a kind of the have confession of compensator, the reactive power compensating apparatus that distribution system is used, and can reach quick tracking and level and smooth compensation, and simple in structure, efficient is high, working stability is reliable.
Be achieved in that by the compensator on the bus that is connected on compensation arrangement order of the present utility model, big ladder electric capacity, the controller of fine setting of control compensation device and the many groups of control capacitor switching switch constitutes, compensator is servo compensator or weighting capacitive compensator, wherein: servo compensator is made up of voltage regulator (2) and electric capacity (3) and servomotor (4), the voltage regulator input connects the bus (1) of compensation arrangement, output voltage regulator connects capacitor (3), and the voltage regulator main shaft connects with servo motor shaft; The weighting capacitive compensator constitutes by some electric capacity (5) are in parallel, and electric capacity is by the bus (1) of fuse connection compensation arrangement, the bus of compensation arrangement (1).Voltage regulator can be single-phase or devices such as three-phase regulator or cluster head autotransformer, and electric capacity (3) is made of single group or multiple unit capacitor, and the maximum compensation rate of servo compensator is more than or equal to one group big ladder capacitance compensation amount.The weighting capacitance of weighting capacitive compensator is pressed binary system 2
nOr the electric capacity composition of weights such as many groups, n=0,1,2,3, the minimum capacity of the compensation of weighting capacitive compensator should be more than or equal to one group big ladder capacitance compensation capacity.
The reactive power compensation device that adopts the utility model to provide, under the low situation of power factor of electric network, can be according to different operating modes with by the bucking-out system capacity, select different compensation ways, realize accurately level and smooth compensation, dynamic tracking is fast, makes electric power system power factor all-the-time stable at 0.99 height value, and undulate quantity is no more than 0.04.Only make the idle uniaxially of system perception trend towards zero device and can make that idle exchange frequency is reduced to floor level in the electric power system, and cost is low, simple in structure by capacitive compensation.
Below in conjunction with accompanying drawing the utility model is done further narration.
Fig. 1 is the servo compensator schematic diagram
Fig. 2 is a weighting capacitive compensator schematic diagram
Fig. 3 is the utility model electrical block diagram
With reference to Fig. 1, Fig. 2, Fig. 3, the compensator that is attempted by on the bus (1) of compensation arrangement can be servo compensator or weighting capacitive compensator, servo compensator is by voltage regulator (2) and electric capacity (3) and servomotor (4) formation, and voltage regulator can be single-phase or device electric capacity (3) such as three-phase regulator or big many taps of capacity autotransformer are organized or organized electric capacity more and form by single.The weighting capacitive compensator is formed in parallel by four groups of electric capacity (5), big ladder electric capacity (6) is made of some groups of electric capacity, controller (7) is finished confession, the collection of distribution system state parameter, calculating, analysis, control, for the idle variation of system very fast and frequent enterprise and power equipment, the switching that carries out big ladder electric capacity is finished and is owed to mend coarse adjustment, carry out the track smoothing compensation with servo compensator, realize idle fine setting.Unhappy to the idle variation of system, but frequent relatively operating mode, adopt the big ladder electric capacity of many groups to carry out switching and finish and owe to mend coarse adjustment, follow the tracks of compensation with the weighting compensation, the fine setting that the realization system is idle has realized the degree of regulation height, and tracking response is fast, and big merit compensation is thoroughly.
Under the certain situation of frequency, one group of fixing electric capacity to what send for, distribution system idlely is: Q=V
2/ X
c, as constant X
cWhen constant, square being directly proportional of idle amount Q and the voltage U that is added in the electric capacity two ends, realize idle trace adjusting by pressure regulation to the servo compensator continuously smooth, and tight tracking in real time is for, variation that distribution system is idle, this only by capacitive compensation make confession, the distribution system perception is idle single-phasely trends towards zero.
The weighting capacitive compensator can be realized meticulous compensation and the High Power Factor compensation when little load, selects by certain weights, selects several group capacitors, by making up different weights electric capacity and carrying out switching, reaches the purpose of meticulous compensation.The one, weights are 2
nBe binary combination, n is a weighting capacitive compensator capacitance group number, and by 8,4,2, four groups of electric capacity of 1KVar are formed, and its control resolution can reach 1KVar.The 2nd, weights are big ladder electric capacity 1/n, and n is a weighting capacitive compensator capacitance group number, and promptly resolution is Q
D/ nKV ar, Q
DBe the capacity of big one group of electric capacity of ladder, this weighting capacitive compensator is suitable for jumbo steady load, cooperates with big ladder electric capacity, realizes the two loop nesting formula compensation of large and small ladder, and the compensation of little ladder is inclusive within the compensation of Dan Zuda ladder.
Claims (3)
1, the reactive power compensation device used of a kind of confession, distribution, by the compensator on the bus that is connected on compensation arrangement, big ladder electric capacity, the controller of fine setting of control compensation device and the many groups of control capacitor switching switch constitutes, it is characterized in that: compensator is servo compensator or weighting capacitive compensator, wherein: a, servo compensator is made up of voltage regulator (2) and electric capacity (3) and servomotor (4), the voltage regulator input connects the bus (1) of compensation arrangement, output voltage regulator connects capacitor (3), and the voltage regulator main shaft connects with servo motor shaft; B, the weighting capacitive compensator constitutes by some electric capacity (5) are in parallel, and electric capacity connects the bus (1) of compensation arrangement by fuse and switch.
2, according to the described reactive power compensation device of claim 1, it is characterized in that: voltage regulator can be single-phase or devices such as three-phase regulator or many taps autotransformer, electric capacity (3) is made of single group or multiple unit capacitor, and the maximum compensation capacity of servo compensator is more than or equal to one group big ladder capacitance compensation amount.
3, according to the described reactive power compensation device of claim 1, it is characterized in that: the weighting capacitance of weighting capacitive compensator is pressed binary system 2
nOr many groups equate that the electric capacity of weights form, n=0,1,2,3, the minimum capacity of the compensation capacity of weighting capacitive compensator should greater than, equal one group big ladder capacitance compensation capacity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96213705 CN2276680Y (en) | 1996-06-17 | 1996-06-17 | Reactive power compensating gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96213705 CN2276680Y (en) | 1996-06-17 | 1996-06-17 | Reactive power compensating gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2276680Y true CN2276680Y (en) | 1998-03-18 |
Family
ID=33895980
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96213705 Expired - Fee Related CN2276680Y (en) | 1996-06-17 | 1996-06-17 | Reactive power compensating gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2276680Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6956305B2 (en) | 2001-03-30 | 2005-10-18 | Mitsubishi Denki Kabushiki Kaisha | Voltage fluctuation compensating apparatus |
| WO2007033599A1 (en) * | 2005-09-26 | 2007-03-29 | Ruitian Su | A customer intelligent reactive power automatic compensation energy-saved device |
| CN100342611C (en) * | 2001-03-30 | 2007-10-10 | 三菱电机株式会社 | Voltage variation compensator |
| CN101630846B (en) * | 2009-08-21 | 2012-01-11 | 福州同溢联创电气有限公司 | Low-voltage reactive power compensation switching device |
| CN113410849A (en) * | 2021-05-31 | 2021-09-17 | 上海好创机电工程有限公司 | Binary algorithm-based reactive compensation non-difference optimization method and device |
-
1996
- 1996-06-17 CN CN 96213705 patent/CN2276680Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6956305B2 (en) | 2001-03-30 | 2005-10-18 | Mitsubishi Denki Kabushiki Kaisha | Voltage fluctuation compensating apparatus |
| CN100342611C (en) * | 2001-03-30 | 2007-10-10 | 三菱电机株式会社 | Voltage variation compensator |
| WO2007033599A1 (en) * | 2005-09-26 | 2007-03-29 | Ruitian Su | A customer intelligent reactive power automatic compensation energy-saved device |
| US7872453B2 (en) | 2005-09-26 | 2011-01-18 | Ruitian Su | Customer intelligent reactive power automatic compensation energy-saved device |
| CN101630846B (en) * | 2009-08-21 | 2012-01-11 | 福州同溢联创电气有限公司 | Low-voltage reactive power compensation switching device |
| CN113410849A (en) * | 2021-05-31 | 2021-09-17 | 上海好创机电工程有限公司 | Binary algorithm-based reactive compensation non-difference optimization method and device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |