CN209389720U - A kind of no-load transformer automatic reactive compensator - Google Patents
A kind of no-load transformer automatic reactive compensator Download PDFInfo
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- CN209389720U CN209389720U CN201920304040.3U CN201920304040U CN209389720U CN 209389720 U CN209389720 U CN 209389720U CN 201920304040 U CN201920304040 U CN 201920304040U CN 209389720 U CN209389720 U CN 209389720U
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- sampled current
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- 239000003990 capacitor Substances 0.000 claims abstract description 70
- 238000005070 sampling Methods 0.000 claims abstract description 9
- 238000005259 measurement Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000005611 electricity Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 2
- CUZMQPZYCDIHQL-VCTVXEGHSA-L calcium;(2s)-1-[(2s)-3-[(2r)-2-(cyclohexanecarbonylamino)propanoyl]sulfanyl-2-methylpropanoyl]pyrrolidine-2-carboxylate Chemical compound [Ca+2].N([C@H](C)C(=O)SC[C@@H](C)C(=O)N1[C@@H](CCC1)C([O-])=O)C(=O)C1CCCCC1.N([C@H](C)C(=O)SC[C@@H](C)C(=O)N1[C@@H](CCC1)C([O-])=O)C(=O)C1CCCCC1 CUZMQPZYCDIHQL-VCTVXEGHSA-L 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000009466 transformation Effects 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 kind of no-load transformer automatic reactive compensators, it include: a sampled current transformer, one single-phase alternating current-direct current digital display ammeter, three sampled current transformers, three miniature circuit breakers, three capacitor switching Special contactors, three reactors and three capacitors, wherein, the B of sampled current transformer and charge circuit is connected in series, the sampling input terminal of single-phase alternating current-direct current digital display ammeter is connected with the secondary side of sampled current transformer, normally opened auxiliary contact are connected with the closing coil of capacitor switching Special contactor, miniature circuit breaker, capacitor switching Special contactor, reactor, capacitor is sequentially connected in series to form three capacitor branches, three capacitor branches are connected with the primary connection end of three sampled current transformers.The utility model has the beneficial effect that the reactive power consumed from power grid when can reduce no-load transformer, improves business electrical power factor, reduces idle fine, saves enterprise's production cost.
Description
Technical field
The utility model relates to a kind of devices, and in particular to a kind of no-load transformer automatic reactive compensator belongs to electricity
Gas equipment technical field.
Background technique
Enterprise typically matches corresponding transformer when going into operation according to the total load capacity of the enterprise, but
In actual use, often due to peak load shifting, production dull season, legal festivals and holidays etc., will cause no-load transformer operation.By
It in the sampling of low-pressure reactive compensation is completed in the low-voltage cabinet of power distribution room, so the power factor that power-factor meter is shown is low
Press the realtime power factor of side.Common reactive power compensator is controlled by detecting the power factor size of low-pressure side
, when transformer is in idle running, the electric current of low-pressure side is 0, power factor 1, the capacitor affirmative of low-voltage compensation cabinet
Will not put into, thus cause it is idle consumed by transformer itself cannot be compensated, need to be drawn from power grid excessive idle
Power, this has resulted in power factor and has failed, and can then generate the idle electricity charge.It is unloaded for the electricity consumption enterprise of massive quantity power supply and measurement
Few then thousands of members are imposed a fine in the electricity charge of period monthly, and more then tens of thousands of members improve the production cost of enterprise.
If the idle electricity consumption fine of power supply bureau can be effectively reduced, certain economic interests can be created for enterprise, together
When be also that enterprise advocates an energy-saving and environment-friendly effective measure.
Utility model content
To solve the deficiencies in the prior art, when can reduce no-load transformer the purpose of this utility model is to provide one kind
The reactive power consumed from power grid, to improve the no-load transformer automatic reactive compensator of business electrical power factor.
In order to achieve the above objectives, the utility model adopts the following technical solutions:
A kind of no-load transformer automatic reactive compensator characterized by comprising sampled current transformer, one
A single-phase alternating current-direct current digital display ammeter, three sampled current transformers, three miniature circuit breakers, three capacitor switchings are dedicated connects
Tentaculum, three reactors and three capacitors, in which:
The B of sampled current transformer and charge circuit is connected in series；
The sampling input terminal of single-phase alternating current-direct current digital display ammeter is connected with the secondary side of sampled current transformer, normally opened auxiliary
It connects with the closing coil of three capacitor switching Special contactors contact；
Three sampled current transformers are connected with the ammeter of every phase；
Three capacitor switching Special contactors are connected with three miniature circuit breakers, and three reactors and three capacitors are thrown
Special contactor series connection is cut, three capacitors are connected with three reactors, form three capacitor branches, three miniature circuit breakers
Disengaging line end be these three capacitor branches end of incoming cables；
It connects with the primary connection end of three sampled current transformers the end of incoming cables of three capacitor branches.
No-load transformer automatic reactive compensator above-mentioned, which is characterized in that further include: lightning rod, aforementioned lightning rod
The end of incoming cables of one end Jie capacitor branches, other end ground connection.
No-load transformer automatic reactive compensator above-mentioned, which is characterized in that further include: signal lamp, power supply and three
Capacitor switching Special contactor respectively connects a signal lamp.
No-load transformer automatic reactive compensator above-mentioned, which is characterized in that aforementioned sampled current transformer used
It is open-type sampled current transformer.
No-load transformer automatic reactive compensator above-mentioned, which is characterized in that aforementioned open-type sampled current transformer
Measurement accuracy be 0.5 grade.
No-load transformer automatic reactive compensator above-mentioned, which is characterized in that aforementioned single-phase alternating current-direct current digital display ammeter
Using the single-phase alternating current-direct current digital display ammeter of model ZYX96A-I.
The utility model has the beneficial effect that no-load transformer automatic reactive compensator provided by the utility model,
Because being added to three secondary capacitors in low-pressure side, when no-load transformer, examined by high-precision sampled current transformer
The electric current for surveying low-pressure side, when electric current is less than a certain setting value (such as 1A), the auxiliary of single-phase alternating current-direct current digital display intelligent ammeter
Normally opened contact becomes normally-closed contact, connects capacitor switching Special contactor, puts into capacitor, is according to the determination of the capacity of transformer
No to put into 3 group capacitors, the capacitor for being not required to investment only needs the miniature circuit breaker of the branch to disconnect, when load is slow
When slow recovery, when the electric current of low-pressure side is greater than a certain setting value (such as 10A), the auxiliary of single-phase alternating current-direct current digital display intelligent ammeter
Normally-closed contact becomes normally opened contact, and breaking capacitance device switching Special contactor cuts off capacitor, so no-load transformer can be reduced
When the reactive power that is consumed from power grid reduce idle fine to improve business electrical power factor, save the production of enterprise
Cost.
Detailed description of the invention
Fig. 1 is the composition schematic diagram of no-load transformer automatic reactive compensator provided by the utility model；
Fig. 2 is the structure of a specific embodiment of no-load transformer automatic reactive compensator provided by the utility model
Schematic diagram；
Fig. 3 is the right view of the no-load transformer automatic reactive compensator in Fig. 2.
The meaning of appended drawing reference in figure: the single-phase alternating current-direct current digital display ammeter of 1- cabinet, 2-, 3- arrester, 4- sampling current
Mutual inductor, 5- miniature circuit breaker, 6- capacitor switching Special contactor, 7- reactor, 8- capacitor.
Specific embodiment
Specific introduce is made to the utility model below in conjunction with the drawings and specific embodiments.
Referring to Fig.1, no-load transformer automatic reactive compensator provided by the utility model includes: that a sampling current is mutual
Sensor LHb, single-phase alternating current-direct current digital display ammeter PA, three sampled current transformers (are denoted as sampled current transformer respectively
TA1, sampled current transformer TA2, sampled current transformer TA3), three miniature circuit breakers (be denoted as miniature circuit breaker respectively
QF1, miniature circuit breaker QF2, miniature circuit breaker QF3), three capacitor switching Special contactors (be denoted as capacitor switching respectively
Special contactor KM1, capacitor switching Special contactor KM2, capacitor switching Special contactor KM), three reactors (respectively
Be denoted as reactor DL1, reactor DL2, reactor DL3) and three capacitors (be denoted as capacitor C1, capacitor C2, capacitor respectively
Device C3).
We introduce the connection relationship between these devices below.
The B of sampled current transformer LHb and charge circuit is connected in series.Sampled current transformer LHb preferably uses open-type
Sampled current transformer, measurement accuracy are 0.5 grade.
The sampling input terminal of single-phase alternating current-direct current digital display ammeter PA is connected with the secondary side of sampled current transformer LHb, often
Auxiliary contact are opened to connect with the closing coil of three capacitor switching Special contactor KM.Single-phase alternating current-direct current digital display ammeter PA is excellent
Choosing uses the single-phase alternating current-direct current digital display ammeter of model ZYX96A-I.
The ammeter of sampled current transformer TA1, sampled current transformer TA2 and sampled current transformer TA3 and every phase
Series connection.
Capacitor switching Special contactor KM1 connects with miniature circuit breaker QF1, and reactor DL1 and capacitor switching are dedicated
Contactor KM1 series connection, capacitor C1 connect with reactor DL1, this four devices in series form first capacitor branches, small-sized
The disengaging line end of circuit breaker Q F1 is the end of incoming cables of this capacitor branches, and the end of incoming cables is primary with sampled current transformer TA1's
Terminals series connection.
Capacitor switching Special contactor KM2 connects with miniature circuit breaker QF2, and reactor DL2 and capacitor switching are dedicated
Contactor KM2 series connection, capacitor C2 connect with reactor DL2, this four devices in series form second capacitor branches, small-sized
The disengaging line end of circuit breaker Q F2 is the end of incoming cables of this capacitor branches, and the end of incoming cables is primary with sampled current transformer TA2's
Terminals series connection.
Capacitor switching Special contactor KM3 connects with miniature circuit breaker QF3, and reactor DL3 and capacitor switching are dedicated
Contactor KM3 series connection, capacitor C3 connect with reactor DL3, this four devices in series form third capacitor branches, small-sized
The disengaging line end of circuit breaker Q F3 is the end of incoming cables of this capacitor branches, and the end of incoming cables is primary with sampled current transformer TA3's
Terminals series connection.
As a preferred solution, no-load transformer automatic reactive compensator provided by the utility model further include:
The end of incoming cables of mono- end Jie capacitor branches of lightning rod FV, lightning rod FV, other end ground connection.
As a preferred solution, no-load transformer automatic reactive compensator provided by the utility model further include:
Signal lamp, power supply, capacitor switching Special contactor KM1, capacitor switching Special contactor KM2 and capacitor switching is dedicated connects
Tentaculum KM3 respectively connects a signal lamp.
One specific embodiment of no-load transformer automatic reactive compensator provided by the utility model is as shown in Figure 2.
Fig. 3 is the right view of the no-load transformer automatic reactive compensator in Fig. 2.
Referring to Fig.1, no-load transformer automatic reactive compensator provided by the utility model, certainly in no-load transformer
The principle of dynamic reactive compensation is as follows:
When no-load transformer, the electric current of low-pressure side is detected by high-precision sampled current transformer, when electric current is less than
When a certain setting value (such as 1A), the auxiliary normally opened contact of single-phase alternating current-direct current digital display intelligent ammeter becomes normally-closed contact, connects electricity
Container switching Special contactor puts into capacitor, determines whether to 3 group capacitors of investment according to the capacity of transformer, is not required to throw
The capacitor entered only needs the miniature circuit breaker of the branch to disconnect；
When load slowly restores, when the electric current of low-pressure side is greater than a certain setting value (such as 10A), single-phase alternating current-direct current digital display
The auxiliary normally-closed contact of intelligent amperemeter becomes normally opened contact, and breaking capacitance device switching Special contactor cuts off capacitor, so energy
The reactive power consumed from power grid when enough reducing no-load transformer reduces idle penalize to improve business electrical power factor
Money saves the production cost of enterprise.
It should be noted that above-described embodiment does not limit the utility model in any form, it is all to use equivalent replacement or wait
The mode technical solution obtained for imitating transformation, all falls in the protection scope of the utility model.
Claims (6)
1. a kind of no-load transformer automatic reactive compensator characterized by comprising a sampled current transformer, one
Single-phase alternating current-direct current digital display ammeter, three sampled current transformers, three miniature circuit breakers, three dedicated contacts of capacitor switching
Device, three reactors and three capacitors, in which:
The B of sampled current transformer and charge circuit is connected in series；
The sampling input terminal of single-phase alternating current-direct current digital display ammeter is connected with the secondary side of sampled current transformer, normally opened auxiliary contact
It connects with the closing coil of three capacitor switching Special contactors；
Three sampled current transformers are connected with the ammeter of every phase；
Three capacitor switching Special contactors are connected with three miniature circuit breakers, and three reactors and three capacitor switchings are special
Connected with contactor, three capacitors are connected with three reactors, form three capacitor branches, three miniature circuit breakers into
Leading-out terminal is the end of incoming cables of these three capacitor branches；
It connects with the primary connection end of three sampled current transformers the end of incoming cables of three capacitor branches.
2. no-load transformer automatic reactive compensator according to claim 1, which is characterized in that further include: lightning rod,
The end of incoming cables of the one end Jie capacitor branches of lightning rod, other end ground connection.
3. no-load transformer automatic reactive compensator according to claim 1, which is characterized in that further include: signal lamp,
Power supply and three capacitor switching Special contactors respectively connect a signal lamp.
4. no-load transformer automatic reactive compensator according to claim 1, which is characterized in that the sampling current is mutual
Sensor is using open-type sampled current transformer.
5. no-load transformer automatic reactive compensator according to claim 4, which is characterized in that the open-type sampling
The measurement accuracy of current transformer is 0.5 grade.
6. no-load transformer automatic reactive compensator according to claim 1, which is characterized in that the single-phase alternating current-direct current
Digital display ammeter using model ZYX96A-I single-phase alternating current-direct current digital display ammeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920304040.3U CN209389720U (en) | 2019-03-11 | 2019-03-11 | A kind of no-load transformer automatic reactive compensator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920304040.3U CN209389720U (en) | 2019-03-11 | 2019-03-11 | A kind of no-load transformer automatic reactive compensator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209389720U true CN209389720U (en) | 2019-09-13 |
Family
ID=67854698
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920304040.3U Expired - Fee Related CN209389720U (en) | 2019-03-11 | 2019-03-11 | A kind of no-load transformer automatic reactive compensator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209389720U (en) |
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2019
- 2019-03-11 CN CN201920304040.3U patent/CN209389720U/en not_active Expired - Fee Related
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Granted publication date: 20190913 |