CN205178274U - Manual reactive power compensator cabinet of power transformer - Google Patents
Manual reactive power compensator cabinet of power transformer Download PDFInfo
- Publication number
- CN205178274U CN205178274U CN201520967534.1U CN201520967534U CN205178274U CN 205178274 U CN205178274 U CN 205178274U CN 201520967534 U CN201520967534 U CN 201520967534U CN 205178274 U CN205178274 U CN 205178274U
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- power
- power transformer
- switch
- live wire
- contactor
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- 239000003990 capacitor Substances 0.000 claims abstract description 27
- 230000005540 biological transmission Effects 0.000 description 4
- 230000005611 electricity Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
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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Abstract
The utility model discloses a manual reactive power compensator cabinet of power transformer, including the cabinet body and reactive compensation circuit part, the reactive compensation circuit part includes major loop and control circuit, the major loop includes cutoff switch, is no less than 1 power capacitor and is no less than 1 electrothermal relay, cutoff switch and live wire series connection behind power capacitor and electrothermal relay's the thermal element difference one -to -one series connection, are connected with the live wire again, control circuit includes combination switch and is no less than 1 ac contactor, combination switch and ac contactor's coil pin one -to -one series connection, and the back corresponds and connects on the live wire zero line. The utility model discloses can calculate suitable capacitance value according to the difference of power transformer behavior, power capacitor quantity that the switching is suitable, in effectual control capacitance switching frequency, greatly increased the life of condenser.
Description
Technical field
The utility model relates to a kind of reactive power compensator, particularly relates to the manual reactive compensation cabinet of a kind of power transformer.
Background technology
In process of production, as long as use as the inductive loads such as motor will produce corresponding reactive power.Reactive current, reactive power occupy the capacity of generating, transmission of electricity, power consumption equipment, the useful capacity of power equipment is reduced, investment increases, and reactive current is on generating, transmission of electricity, power consumption equipment, form thermal losses, become reactive loss, make the efficiency reduction of generating, transmission of electricity, power consumption equipment, moreover the loss of reactive power, the electric cost expenditure rolling up enterprise that also can be extra.But reactive current, reactive power are the inherent characteristics of generating, transmission of electricity, power consumption equipment, can not remove, can only adopt the mode that electric capacitor compensates, therefore, all use the method for reactive power compensation in our most production.
The problem of the reactive power compensation of power transformer, be will faced by a difficult problem.Nowadays the method that reactive power compensation is conventional mainly contains auto-compensation and compensates manually.These two kinds of compensation ways respectively have quality, for usually single power transformer, although the installation of auto-compensation capacitor box saves manpower, but because its cost is high, and capacitor switching is too frequent in production run, make power capacitor have the shortcomings such as fragile, cost performance is not high.
Summary of the invention
The technical problems to be solved in the utility model is to provide a kind of manual reactive compensation cabinet of power transformer, can the frequency of effective control capacitance switching, promotes the useful life etc. of capacitor.
For solving the problems of the technologies described above, the utility model adopts following technical scheme:
The manual reactive compensation cabinet of a kind of power transformer, comprise cabinet and reactive power compensation circuit part, described reactive power compensation circuit part comprises major loop and control loop; Described major loop comprises disconnect, be no less than the power capacitor of 1 and be no less than the thermal relay of 1; Described disconnect is connected with live wire serial connection, and the thermal element of described power capacitor and described thermal relay after one_to_one corresponding is connected in series respectively, then is connected with live wire; Described control loop comprises unit switch and is no less than the A.C. contactor of 1, and the coil pin one_to_one corresponding of described unit switch and described A.C. contactor is connected in series, and rear correspondence is connected on Live line Zero line.
Preferably, every bar line that the thermal element of described thermal relay is connected with live wire is equipped with safeties, plays protective circuit.
Preferably, between the main contacts switch of the A.C. contactor of the described control loop thermal element that is connected to the thermal relay of described major loop and safeties.
Preferably, between described unit switch and live wire, safeties are connected with; Described thermal relay normally closed interlock correspondence be connected to described A.C. contactor coil pin and zero line between.
Preferably, described safeties are fuse.
Preferably, described control loop also comprises the knife switch that is no less than 1 and is no less than 1 indicator light, described knife switch and described A.C. contactor connect into auxiliary contact normal open switch, described auxiliary contact normal open switch and described indicator light one_to_one corresponding are connected in series, described in be connected in series after knife switch and indicator light be connected in parallel between live wire and zero line.
Preferably, be connected with an indicator light between described live wire and zero line, during circuit working, can carry out decision circuitry by indicator light may Problems existing.
Preferably, described thermal relay, A.C. contactor, power capacitor, knife switch, the indicator light quantity that connects of contacting with knife switch are consistent, ensure relation one to one.
Preferably, described power capacitor is three-phase capacitor.
The beneficial effects of the utility model are:
1. the utility model according to the difference of power transformer working condition, can calculate suitable capacitance, and the power capacitor quantity that switching is suitable, while effective control capacitance switching frequency, considerably increases the useful life of capacitor.
2. the utility model is compared with automatic switching, and artificial switching capacitor box also has the advantages such as low, the easy installation of cost, structure are simple, resources conservation, safety and environmental protection.
Figure of description
Fig. 1 is main loop circuit figure of the present utility model;
Fig. 2 is control loop circuit diagram of the present utility model.
Embodiment
Below in conjunction with drawings and Examples, embodiment of the present utility model is described in further detail.
Embodiment 1: the manual reactive compensation cabinet of a kind of power transformer, comprises cabinet and reactive power compensation circuit part, and cabinet is regulator cubicle, and reactive power compensation circuit part comprises major loop and control loop, see Fig. 1, Fig. 2; Major loop comprises 1 disconnect QS, three-phase shape power capacitor CN1-CN5, thermal relay FR1-FR5 and fuse FU1 ~ FU15; This reactive power compensation circuit part has three live wires L1, L2 and L3 and a zero line N, disconnect QS to be connected on live wire L1, L2 and L3, as urgent tripper; Three pins of three-phase power capacitor CN1 are corresponding with three pins of thermal element one end of thermal relay FR1 respectively to be connected, and three pins of the thermal element other end of thermal relay FR1 are connected with live wire L1, L2 and L3 respectively respectively by fuse FU1, fuse FU2, fuse FU3; In like manner, three-phase shape power capacitor CN2-CN5, thermal relay FR2-FR5 are connected on live wire L1, L2 and L3 with fuse FU4 ~ FU15 with identical connected mode correspondence; Wherein fuse FU1 ~ FU15 plays protective circuit, and when circuit is by larger current, fuse open circuit, plays a protective role.
Control loop comprises unit switch Q1, A.C. contactor KM1-KM5, fuse FR16, knife switch KM1 〞-KM5 〞 and indicator light LAMP1-LAMP8, unit switch Q1 model is LW5D-16, after the coil pin one_to_one corresponding of unit switch Q1 and A.C. contactor KM1-KM5 is connected in series, unit switch Q1 is connected with live wire L1 by fuse FR16, and the coil pin of A.C. contactor KM1-KM5 is corresponding to be respectively connected with zero line N by the normally closed interlock FR1 '-FR5 ' of thermal relay FR1-FR5; Knife switch KM1 〞-KM5 〞 is corresponding with A.C. contactor KM1-KM5 connects into auxiliary contact normal open switch, knife switch KM1 〞-KM5 〞 and indicator light LAMP1-LAMP5 one_to_one corresponding are connected in series, and the knife switch KM1 〞-KM5 〞 after series connection and indicator light LAMP1-LAMP5 is connected in parallel between live wire L3 and zero line N; Be connected to indicator light LAMP6-LAMP8 between live wire L1, L2 and L3 and zero line N, indicator light LAMP6-LAMP8 plays indicative function, and whether live wire L1 or live wire L2 or live wire L3 goes wrong, and can be judged by the light and shade of indicator light; Between the thermal element that the main contacts K switch M1 '-KM5 ' of A.C. contactor KM1-KM5 is connected to major loop thermal relay FR1-FR5 and fuse FU1 ~ FU15; Wherein, fuse FR16 plays protective circuit effect, prevents electric current in circuit excessive.
The working method of the manual reactive compensation cabinet of this power transformer is: when circuit ON, manual rotation unit switch, the switch of some on unit switch is opened according to the need of work of power transformer, connect corresponding A.C. contactor, the main contacts switch of simultaneously corresponding A.C. contactor closes, the three-phase shape power capacitor place in circuit of A.C. contactor main contacts switch place circuit, realizes the switching of electric capacity; The auxiliary contact switch of A.C. contactor is also corresponding closed simultaneously, and connect indicator light corresponding with it, when a certain group capacitor breaks down, thermal relay FR action, can disconnect the major loop of this group three-phase shape power capacitor, and indicator light extinguishes.
In conjunction with the accompanying drawings and embodiments execution mode of the present utility model is elaborated above, but the utility model is not limited to above-mentioned execution mode, in the ken that those of ordinary skill in the art possess, can also carry out changing or changing under the prerequisite not departing from the utility model aim.
Claims (9)
1. the manual reactive compensation cabinet of power transformer, is characterized by: comprise cabinet and reactive power compensation circuit part, and described reactive power compensation circuit part comprises major loop and control loop; Described major loop comprises disconnect, be no less than the power capacitor of 1 and be no less than the thermal relay of 1; Described disconnect is connected with live wire serial connection, and the thermal element of described power capacitor and described thermal relay after one_to_one corresponding is connected in series respectively, then is connected with live wire; Described control loop comprises unit switch and is no less than the A.C. contactor of 1, and after the coil pin one_to_one corresponding of described unit switch and described A.C. contactor is connected in series, correspondence is connected on Live line Zero line.
2. the manual reactive compensation cabinet of power transformer according to claim 1, is characterized by: on every bar line that the thermal element of described thermal relay is connected with live wire, be equipped with safeties.
3. the manual reactive compensation cabinet of power transformer according to claim 2, is characterized by: between the thermal element that the main contacts switch of the A.C. contactor of described control loop is connected to the thermal relay of described major loop and safeties.
4. the manual reactive compensation cabinet of power transformer according to claim 1, is characterized by: between described unit switch and live wire, be connected with safeties; Described thermal relay normally closed interlock correspondence be connected to described A.C. contactor coil pin and zero line between.
5. the manual reactive compensation cabinet of the power transformer according to claim 2 or 4, is characterized by: described safeties are fuse.
6. the manual reactive compensation cabinet of power transformer according to claim 1, it is characterized by: described control loop also comprises the knife switch that is no less than 1 and is no less than 1 indicator light, described knife switch and described A.C. contactor connect into auxiliary contact normal open switch, described auxiliary contact normal open switch and described indicator light one_to_one corresponding are connected in series, described in be connected in series after knife switch and indicator light be connected in parallel between live wire and zero line.
7. the manual reactive compensation cabinet of power transformer according to claim 6, is characterized by: be connected with an indicator light between described live wire and zero line.
8. the manual reactive compensation cabinet of power transformer according to claim 6, is characterized by: described thermal relay, A.C. contactor, power capacitor, knife switch, the indicator light quantity that connects of contacting with knife switch are consistent.
9. the manual reactive compensation cabinet of power transformer according to claim 1, is characterized by: described power capacitor is three-phase capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520967534.1U CN205178274U (en) | 2015-11-30 | 2015-11-30 | Manual reactive power compensator cabinet of power transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520967534.1U CN205178274U (en) | 2015-11-30 | 2015-11-30 | Manual reactive power compensator cabinet of power transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205178274U true CN205178274U (en) | 2016-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520967534.1U Expired - Fee Related CN205178274U (en) | 2015-11-30 | 2015-11-30 | Manual reactive power compensator cabinet of power transformer |
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| Country | Link |
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| CN (1) | CN205178274U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108023357A (en) * | 2016-11-20 | 2018-05-11 | 国网江西省电力公司赣东北供电分公司 | A kind of new reactive power automatic compensation device |
-
2015
- 2015-11-30 CN CN201520967534.1U patent/CN205178274U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108023357A (en) * | 2016-11-20 | 2018-05-11 | 国网江西省电力公司赣东北供电分公司 | A kind of new reactive power automatic compensation device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160420 Termination date: 20191130 |