CN2927448Y - Low-voltage reactive compensator - Google Patents
Low-voltage reactive compensator Download PDFInfo
- Publication number
- CN2927448Y CN2927448Y CNU2006200890485U CN200620089048U CN2927448Y CN 2927448 Y CN2927448 Y CN 2927448Y CN U2006200890485 U CNU2006200890485 U CN U2006200890485U CN 200620089048 U CN200620089048 U CN 200620089048U CN 2927448 Y CN2927448 Y CN 2927448Y
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- China
- Prior art keywords
- reactive power
- compensation
- control circuit
- contact
- contactless
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000003990 capacitor Substances 0.000 abstract description 18
- 238000009434 installation Methods 0.000 abstract description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 230000002457 bidirectional effect Effects 0.000 description 4
- 229910000808 amorphous metal alloy Inorganic materials 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000004134 energy conservation Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000036760 body temperature Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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Classifications
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
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- Control Of Electrical Variables (AREA)
Abstract
The utility model relates to a low-voltage reactive power compensator, comprising a contactless reactive power compensation control circuit, a split phase contactless reactive power compensation control circuit and a contact reactive power compensation control circuit, and the control mode of automatic return is adopted to separate the reactive power compensator from the power supply in advance when the reactive power compensator is heated to the non-normal damage, when the temperature returns to normal, the reactive power compensator can be automatically operated. The utility model has the advantages of simple structure, reliable operation, power-saving, installation convenience, low cost, achievement of the reactive power dynamic compensation, avoidance of the damage of the capacitor because of the over-high voltage and high harmonic voltage and extension the period of usage of the capacitor.
Description
Technical field
The utility model belongs to the AC low-tension compensation technique, particularly a kind of low-pressure reactive compensation device.
Background technology
In order to improve the power factor of power consumption equipment, adopt power capacitor to compensate usually.The normal heating of compensation condenser can distribute in the course of the work, does not influence operate as normal.But, because the rising in short-term of line voltage especially contains under the situation of high order harmonic component pollution at electrical network, can make anxious poly-intensification of compensation condenser, cause abnormal damage.This is generally adopted fusing or breaks mode protection,, will cause compensation condenser to scrap and to work in case protect when moving.
Therefore, the utility model provides the circuit that a kind of employing can automatically involution control mode, when the compensation condenser heating does not reach its improper damages as yet, makes it break away from power supply in advance, treat that temperature is recovered normally after, put into operation automatically again.Make more compact structure, low, the long service life of cost.
The utility model content
The utility model is the problem of often damaging at the capacitor that reactive power compensator in the existing three-phase alternating current electrical network exists, a kind of have simple in structure, reliable operation, energy-conservation, easy for installation, low-pressure reactive compensation device that production cost is low are provided, realize reactive power dynamic compensation, can avoid the damage that capacitor caused because of overtension or higher harmonic voltage, prolong capacitor useful life.
The utility model comprises cabinet, change over switch, contactless reactive power compensation control circuit, phase-splitting is contactless reactive power compensation control circuit and reactive power compensation control circuit in contact is arranged, change over switch be arranged on cabinet above, contactless reactive power compensation control circuit, phase-splitting is contactless reactive power compensation control circuit and have contact reactive power compensation control circuit all to be arranged in the cabinet, and all be connected with change over switch respectively;
Described contactless reactive power compensation control circuit comprises alternating-current switch, the series connection over-zero trigger, reactor, the triangle compensation condenser, the series connection break contact, the triangle compensation condenser is that triangle connects, its contact is the U by reactor and alternating-current switch and three-phase alternating-current supply respectively, V, W is connected, the series connection over-zero trigger is connected in series between the zero line N and control end CK of power supply with the break contact of connecting, the bidirectional thyristor of described alternating-current switch is to adopt the cabinet of low-pressure reactive compensation device as radiator, the iron core of described reactor is the amorphous alloy iron core, and described series connection break contact is a heat-sensitive automatic circuit-breaker;
Described phase-splitting is contactless, and the reactive power compensation control circuit comprises alternating-current switch, reactor, over-zero trigger in parallel, star compensation electrical equipment, break contact in parallel, three-phase alternating-current supply U, V, W, be connected with an end of star compensation condenser with reactor by alternating-current switch respectively, the other end of star compensation condenser all is connected with the common port of break contact in parallel, and be connected with the zero line N of power supply, break contact in parallel is respectively by over-zero trigger in parallel and control end CK1, CK2, CK3 connects, the bidirectional thyristor of described alternating-current switch is to adopt the cabinet of low-pressure reactive compensation device as radiator, the iron core of described reactor is the amorphous alloy iron core, and described break contact in parallel is a heat-sensitive automatic circuit-breaker;
Described have contact reactive power compensation control circuit to comprise reactor, triangle compensation condenser, series connection break contact, A.C. contactor, the triangle compensation condenser is that triangle connects, its contact is connected with U, V, the W of three-phase alternating-current supply with A.C. contactor by reactor respectively, one end of series connection break contact is connected with power supply U by the coil of A.C. contactor, the other end is connected with control end CK, the iron core of described reactor is the amorphous alloy iron core, and described series connection break contact is a heat-sensitive automatic circuit-breaker.
The utlity model has simple in structure, reliable operation, energy-conservation, easy for installation, advantage such as production cost is low, realize reactive power dynamic compensation, can avoid the damage that capacitor caused because of overtension or higher harmonic voltage, prolong capacitor useful life.
Description of drawings
Fig. 1 is the contactless reactive power compensation control of a utility model electrical schematic diagram;
Fig. 2 is the contactless reactive power compensation control of a utility model phase-splitting electrical schematic diagram;
Fig. 3 is that the utility model has contact reactive power compensation control electrical schematic diagram;
Among the figure: 1 alternating-current switch, 2 series connection over-zero triggers, 3 reactors, 4 triangle compensation condensers, 5 series connection break contacts, 6 over-zero triggers in parallel, 7 star compensation condensers, 8 break contacts in parallel, 9 A.C. contactors.
Embodiment
In conjunction with example the technical solution of the utility model is described further.
As shown in the figure, a kind of low-pressure reactive compensation device comprises cabinet, change over switch, contactless reactive power compensation control circuit, phase-splitting is contactless reactive power compensation control circuit and reactive power compensation control circuit in contact is arranged.Change over switch be arranged on cabinet above, contactless reactive power compensation control circuit, phase-splitting is contactless reactive power compensation control circuit and have contact reactive power compensation control circuit all to be arranged in the cabinet, and all be connected respectively with change over switch.
As shown in Figure 1, contactless reactive power compensation control circuit comprises alternating-current switch 1, series connection over-zero trigger 2, reactor 3, triangle compensation condenser 4, series connection break contact 5.Triangle compensation condenser 4 is made up of three capacitor C1, C2, C3, and end to end triangularity, its contact is connected with three reactor L1, L2 of reactor 3, the end of L3 respectively, and the other end is connected with U, V, the W of three-phase alternating-current supply by three bidirectional thyristor V1, V2, the V3 of alternating-current switch 1.Series connection over-zero trigger 2 is connected in series between the zero line N and control end CK of power supply with the break contact 5 of connecting.Series connection break contact 5 is composed in series by three heat-sensitive automatic circuit-breaker ST1, ST2, ST3.This circuit is applicable to the frequent reactive power compensation of fling-cut system fast, can realize that just three capacitor C1, C2 to compensation condenser 4, the temperature of C3 protect automatically.
As shown in Figure 2, the contactless reactive power compensation control circuit of phase-splitting comprises alternating-current switch 1, reactor 3, over-zero trigger in parallel 6, star compensation condenser 7, break contact in parallel 8.Three-phase alternating-current supply U, V, W are connected with three capacitor C1, C2, C3 of star compensation condenser 7 through three reactor L1, L2, the L3 of reactor 3 by three bidirectional thyristor V1, V2, the V3 of alternating-current switch 1 respectively.Three capacitor C1, C2 of star compensation condenser 7, the common port of C3 are connected with three heat-sensitive automatic circuit-breaker ST1, ST2 of break contact 8 in parallel, the common port of ST3, and are connected with the zero line N of power supply.Break contact 8 in parallel is connected with control end CK1, CK2, CK3 by over-zero trigger 6 in parallel respectively.This circuit is applicable to the phase splitting compensation of unbalanced threephase load, can realize that just three capacitor C1, C2 to compensation condenser 7, the temperature of C3 protect automatically.
As shown in Figure 3, there is contact reactive power compensation control circuit to comprise reactor 3, triangle compensation condenser 4, series connection break contact 5, A.C. contactor 9.Triangle compensation condenser 4 is made up of three capacitor C1, C2, C3, and end to end triangularity, its contact is connected with three reactor L1, L2 of reactor 3, the end of L3 respectively, and its other end is connected with U, V, the W of three-phase alternating-current supply by three normally opened contact KM of A.C. contactor 9.Series connection break contact 5 is composed in series by three heat-sensitive automatic circuit-breaker ST1, ST2, ST3, and the one end is connected with power supply U by the coil of A.C. contactor 9, and the other end is connected with control end CK.This circuit is applicable to static reactive power compensation, can realize that just three capacitor C1, C2 to compensation condenser 4, the temperature of C3 protect automatically.
Three heat-sensitive automatic circuit-breaker ST1, ST2, the ST3 of series connection break contact 5 or break contact in parallel 8 experience three capacitor C1, C2 of triangle compensation condenser 4 or star compensation condenser 7, the temperature of C3 fuse respectively.When certain capacitor body temperature reaches the operating value of heat-sensitive automatic circuit-breaker, the just automatic disconnection of its break contact, make the outage of alternating-current switch or A.C. contactor, thereby this road compensation condenser is cut out, then Fa Re capacitor body begins cooling, when its temperature was reduced to the resetting value of heat-sensitive automatic circuit-breaker, its break contact is auto-closing just, made control circuit recover normal.
Claims (4)
1, a kind of low-pressure reactive compensation device, it is characterized in that, comprise cabinet, change over switch, contactless reactive power compensation control circuit, phase-splitting is contactless reactive power compensation control circuit and reactive power compensation control circuit in contact is arranged, change over switch be arranged on cabinet above, contactless reactive power compensation control circuit, phase-splitting is contactless reactive power compensation control circuit and have contact reactive power compensation control circuit all to be arranged in the cabinet, and be connected with change over switch respectively.
2, a kind of low-pressure reactive compensation device as claimed in claim 1, it is characterized in that, described contactless reactive power compensation control circuit comprises alternating-current switch, series connection over-zero trigger, reactor, triangle compensation condenser, series connection break contact, the triangle compensation condenser is that triangle connects, its contact is connected with three-phase alternating-current supply U, V, W with alternating-current switch by reactor respectively, and the series connection over-zero trigger is connected in series between the zero line N and control end CK of power supply with the break contact of connecting.
3, a kind of low-pressure reactive compensation device as claimed in claim 1, it is characterized in that, described phase-splitting is contactless, and the reactive power compensation control circuit comprises alternating-current switch, reactor, over-zero trigger in parallel, star compensation electrical equipment, break contact in parallel, three-phase alternating-current supply U, V, W is connected with an end of star compensation condenser with reactor by alternating-current switch respectively, the other end of star compensation condenser all is connected with the common port of break contact in parallel, and be connected with the zero line N of power supply, break contact in parallel is respectively by over-zero trigger in parallel and control end CK1, CK2, CK3 connects.
4, a kind of low-pressure reactive compensation device as claimed in claim 1, it is characterized in that, described have contact reactive power compensation control circuit to comprise reactor, triangle compensation condenser, series connection break contact, A.C. contactor, the triangle compensation condenser is that triangle connects, its contact is connected with U, V, the W of three-phase alternating-current supply with A.C. contactor by reactor respectively, one end of series connection break contact is connected with power supply U by the coil of A.C. contactor, and the other end is connected with control end CK.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200890485U CN2927448Y (en) | 2006-01-20 | 2006-01-20 | Low-voltage reactive compensator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200890485U CN2927448Y (en) | 2006-01-20 | 2006-01-20 | Low-voltage reactive compensator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2927448Y true CN2927448Y (en) | 2007-07-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006200890485U Expired - Fee Related CN2927448Y (en) | 2006-01-20 | 2006-01-20 | Low-voltage reactive compensator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2927448Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105406478A (en) * | 2015-12-01 | 2016-03-16 | 盛隆电气集团有限公司 | Anti-harmonic co-compensation reactive compensation module, equipment and method |
| CN107947188A (en) * | 2017-11-30 | 2018-04-20 | 营口康辉石化有限公司 | Low pressure static reactive power compensator |
-
2006
- 2006-01-20 CN CNU2006200890485U patent/CN2927448Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105406478A (en) * | 2015-12-01 | 2016-03-16 | 盛隆电气集团有限公司 | Anti-harmonic co-compensation reactive compensation module, equipment and method |
| CN107947188A (en) * | 2017-11-30 | 2018-04-20 | 营口康辉石化有限公司 | Low pressure static reactive power compensator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHENYANG DINGSHENG ZHONGBEI MECHANICAL AND ELECTR Free format text: FORMER OWNER: SHI RUNBO; PATENTEE Effective date: 20080222 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20080222 Address after: -2, lakeside garden, No. 183, five South Road, Heping District, Liaoning, Shenyang Province, D-1-26-1, 110006 Patentee after: Shenyang Dingsheng Zhongbei Electromechanical Equipment Co., Ltd. Address before: No. 6, 311 Haikou street, Heping District, Liaoning, Shenyang: 110006 Co-patentee before: Liu Xuebao Patentee before: Stone lubricant Co-patentee before: Shi Bi |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070725 Termination date: 20150120 |
|
| EXPY | Termination of patent right or utility model |