CN107947191A - Reactive power compensator and mutual inductor detection device - Google Patents
Reactive power compensator and mutual inductor detection device Download PDFInfo
- Publication number
- CN107947191A CN107947191A CN201711309057.XA CN201711309057A CN107947191A CN 107947191 A CN107947191 A CN 107947191A CN 201711309057 A CN201711309057 A CN 201711309057A CN 107947191 A CN107947191 A CN 107947191A
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- lifting device
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- 238000001514 detection method Methods 0.000 title claims abstract description 59
- 239000003990 capacitor Substances 0.000 claims abstract description 39
- 238000004804 winding Methods 0.000 claims description 27
- 238000012544 monitoring process Methods 0.000 claims description 22
- 230000003068 static effect Effects 0.000 claims description 10
- 230000009466 transformation Effects 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 4
- 238000007689 inspection Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 2
- 230000035876 healing Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
- H02J3/1821—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators
-
- 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
Abstract
The present invention provides a kind of reactive power compensator and mutual inductor detection device, it is related to electrical equipment technical field.The electric energy of external power supply can be adjusted by pressure regulator, compensating unit is compensated using the reactance that tunable capacitor group can load pressure regulator, improves power factor during voltage regulator operation, can improve the voltage regulation result of pressure regulator.Larger electric current can also be obtained using the less pressure regulator of apparent energy, the electric current that current lifting device exports is met the needs of ct calibrating, reduces the consumption to electric energy, saves the energy.
Description
Technical field
The present invention relates to electrical equipment technical field, is detected in particular to a kind of reactive power compensator and mutual inductor
Equipment.
Background technology
At present, when examining and determine mutual inductor, it is necessary to provide larger detection electric current for mutual inductor, but existing laboratory
In power supply capacity it is limited, when needing larger electric current, can not meet the needs of electric current needed for examining and determine.
The content of the invention
In view of this, the present invention provides a kind of reactive power compensator and mutual inductor detection device, above-mentioned ask can be solved
Topic.
Technical solution provided by the invention is as follows：
A kind of reactive power compensator, including pressure regulator, monitoring unit, compensating unit and current lifting device, wherein：
The pressure regulator is connected with external power supply and the monitoring unit respectively, for the electricity inputted to the external power supply
It can be adjusted, and the electric energy after adjusting is exported to the current lifting device；
The monitoring unit is used for electric current, voltage and the power factor for detecting the pressure regulator output electric energy；
The compensating unit is connected with the output terminal of the monitoring unit, and it is adjustable adjustable which includes capacitance
Capacitance group, the compensating unit are used for the reactance for compensating the pressure regulator by the tunable capacitor group and loading；
The current lifting device is connected with the pressure regulator, for by the current transformation that the pressure regulator exports to predetermined current,
Export to external equipment.
Further, the pressure regulator includes tap-changing windings, and the input terminal of the tap-changing windings connects with the external power supply
Connect, the output terminal of the pressure regulator includes static contact and moving contact；
The monitoring unit includes voltage detection module, the voltage detection module respectively with the static contact and moving contact
Connection, for detecting the voltage of the pressure regulator output electric energy.
Further, the monitoring unit further includes current transformer, current detection module and power factor detection module,
Wherein：
One end of the first winding of the current transformer is connected with the moving contact, the current transformer once around
The other end of group is connected with the input terminal of the current lifting device；
One end of the current detection module is connected with one end of the secondary winding of the current transformer, the electric current inspection
The other end for surveying module is connected with a current input terminal of the power factor detection module, which is used to examine
Survey the electric current of the pressure regulator output electric energy；
Another current input terminal of the power factor detection module is another with the secondary winding of the current transformer
End connection, the voltage input end of the power factor detection module are connected with the input terminal of the current lifting device, power factor inspection
Survey the power factor that module is used to detect the pressure regulator output electric energy.
Further, the tunable capacitor group includes at least one tunable capacitor, at least one fixed capacity, at least one
Switch, wherein：
The tunable capacitor, fixed capacity form parallel circuit with after the corresponding switch series connection respectively, parallel connection electricity
Input terminal of the one end on road as the compensating unit, the output terminal of the other end of the parallel circuit as the compensating unit,
Input terminal of the input, output end of the compensating unit respectively with the current lifting device is connected.
Further, the input terminal of the current lifting device includes the first terminals and the second terminals, the power factor inspection
Surveying the voltage input end of module includes first voltage input terminal and second voltage input terminal, first terminals respectively with it is described
Static contact, first voltage input terminal are connected with the output terminal of the compensating unit, second terminals respectively with the electric current
The other end, the second voltage input terminal of the first winding of mutual inductor are connected with the input terminal of the compensating unit.
Further, the tunable capacitor includes being used for the tunable capacitor control terminal for receiving capacitance adjustment instruction, described to open
Closing includes being used for the switch control terminal for receiving switch order, which further includes control unit, wherein：
Described control unit is connected with the tunable capacitor control terminal and the switch control terminal respectively, for according to
Electric current, voltage and the power factor of the pressure regulator that monitoring unit detects output electric energy, the instruction of generation capacitance adjustment and
Switch order, to adjust the closure of the capacitance of the tunable capacitor and the switch or disconnection.
Further, the both ends of the primary side winding of the current lifting device are respectively as first terminals and the second wiring
End, the both ends of the vice-side winding of the current lifting device are connected with the external equipment respectively.
Further, the fixed capacity is self healing capacitor.
Further, the tunable capacitor is self healing capacitor.
Present invention also offers a kind of mutual inductor detection device, including above-mentioned reactive power compensator, mutual inductor detection is set
Standby to further include power-supply device, the power-supply device is used to provide electric energy for the reactive power compensator.
Reactive power compensator and detection device provided in an embodiment of the present invention, can be to the electricity of external power supply by pressure regulator
It can be adjusted, compensating unit is compensated using the reactance that tunable capacitor group can load pressure regulator, improves pressure regulator work
Power factor when making, can improve the voltage regulation result of pressure regulator.Using the less pressure regulator of apparent energy can also obtain compared with
Big electric current, allows the electric current that current lifting device exports to meet the needs of ct calibrating, reduces the consumption to electric energy, saves energy
Source.
To enable the above objects, features and advantages of the present invention to become apparent, preferred embodiment cited below particularly, and coordinate
Appended attached drawing, is described in detail below.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it will be appreciated that the following drawings illustrate only certain embodiments of the present invention, therefore be not construed as pair
The restriction of scope, for those of ordinary skill in the art, without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is a kind of schematic diagram of reactive power compensator provided in an embodiment of the present invention.
Fig. 2 is a kind of circuit diagram of reactive power compensator provided in an embodiment of the present invention.
Fig. 3 is the circuit diagram of another reactive power compensator provided in an embodiment of the present invention.
Fig. 4 is a kind of schematic diagram of mutual inductor detection device provided in an embodiment of the present invention.
Icon：10- reactive power compensators；101- pressure regulators；111- moving contacts；112- static contacts；102- monitoring unit；
121- voltage detection modules；122- current transformers；123- current detection modules；124- power factor detection modules；1241,
1242- current input terminals；103- compensating units；131- tunable capacitors；132- fixed capacities；133- is switched；104- current lifting devices；
The first terminals of 141-；The second terminals of 142-；105- control units；20- mutual inductor detection devices.
Embodiment
Below in conjunction with attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Ground describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.Usually exist
The component of the embodiment of the present invention described and illustrated in attached drawing can be arranged and designed with a variety of configurations herein.Cause
This, the detailed description of the embodiment of the present invention to providing in the accompanying drawings is not intended to limit claimed invention below
Scope, but it is merely representative of the selected embodiment of the present invention.Based on the embodiment of the present invention, those skilled in the art are not doing
Go out all other embodiments obtained on the premise of creative work, belong to the scope of protection of the invention.
It should be noted that：Similar label and letter represents similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined, then it further need not be defined and explained in subsequent attached drawing in a attached drawing.Meanwhile the present invention's
In description, term " first ", " second " etc. are only used for distinguishing description, and it is not intended that instruction or hint relative importance.
Inventor has found, when being detected to mutual inductor, to standard and can be tested electric current by pressure regulator, current lifting device
Mutual inductor provides electric current.In the calibrating of current transformer, load of the current lifting device as pressure regulator is inductive load, Ge Gejian
The conducting wire of measurement equipment connection also produces reactance due to being loaded with larger electric current in conducting process.This results in pressure regulator and bears
The power factor of load is very low, for example, in the calibrating to current transformer, generally requires electric current to rise to 12000A, this is just needed
The pressure regulator and its power supply of 120KVA.The finite capacity of common laboratory power supply, can not meet such current requirements, and detect
The pressure regulator of such large capacity will not be equipped with instrument.
In view of this, the embodiment of the present application provides a kind of reactive power compensator 10, as depicted in figs. 1 and 2, including pressure regulation
Device 101, monitoring unit 102, compensating unit 103 and current lifting device 104.
The pressure regulator 101 is connected with external power supply and the monitoring unit 102 respectively, for defeated to the external power supply
The voltage of the electric energy entered is adjusted.The pressure regulator 101 can include tap-changing windings, the input terminal of the tap-changing windings with it is described
External power supply connects, and the output terminal of the tap-changing windings can include static contact 112 and moving contact 111.By adjusting moving contact
111 position, can adjust the output electric energy of pressure regulator 101.The concrete model of pressure regulator 101 can be selected according to being actually needed
Select, the embodiment of the present application is not intended to limit the design parameter of pressure regulator 101.
The monitoring unit 102 is used to detect electric current, voltage and power factor that the pressure regulator 101 exports electric energy.It is logical
The various parameters that pressure regulator 101 exports electric energy can be detected in real time by crossing monitoring unit 102, and the adjusting for compensating unit 103 provides
Data are supported.
Detailed, the monitoring unit 102 includes voltage detection module 121, current transformer 122, current detection module
123 and power factor detection module 124, the voltage detection module 121 connect respectively with the static contact 112 and moving contact 111
Connect, the voltage of electric energy is exported for detecting the pressure regulator 101.Voltage detection module 121 can be mechanical or electronic type
Voltmeter, the model of voltmeter can be selected according to being actually needed, and the range and accuracy of detection of voltmeter can be according to detection need
Determine.It is understood that current transformer 122 can also be determined according to being actually needed, to meet the inspection under different scenes
Surveying needs.Current detection module 123 can be mechanical or electronic type ammeter, its specific accuracy of detection and detection range can
With definite according to being actually needed.Power factor detection module 124 can be power-factor meter, and the concrete model of power-factor meter can
With definite according to being actually needed, the embodiment of the present application is not intended to limit its design parameter.
One end of the first winding of the current transformer 122 is connected with the moving contact 111, the current transformer
The other end of 122 first winding is connected with the input terminal of the current lifting device 104.
One end of the current detection module 123 is connected with one end of the secondary winding of the current transformer 122, described
The other end of current detection module 123 is connected with a current input terminal 1241 of the power factor detection module 124, the electricity
Stream detection module 123 is used to detect the electric current that the pressure regulator 101 exports electric energy.
Another current input terminal 1242 of the power factor detection module 124 is secondary with the current transformer 122
The other end connection of winding, the voltage input end of the power factor detection module 124 and the input terminal of the current lifting device 104 connect
Connect, which is used to detect the power factor that the pressure regulator 101 exports electric energy.
The compensating unit 103 is connected with the output terminal of the monitoring unit 102, negative for compensating the pressure regulator 101
The reactance of load.Detailed, the compensating unit 103 includes at least one tunable capacitor 131, at least one fixed capacity 132, extremely
A few switch 133.
The tunable capacitor 131, fixed capacity 132 form parallel circuit with after the corresponding series connection of switch 133 respectively,
Input terminal of the one end of the parallel circuit as the compensating unit 103, the other end of the parallel circuit are single as the compensation
The output terminal of member 103, the input terminal of the input, output end of the compensating unit 103 respectively with the current lifting device 104 are connected.
In another embodiment, the tunable capacitor 131 includes being used to receive the adjustable of capacitance adjustment instruction
Capacity control end, the switch 133 includes being used for the switch control terminal for receiving switch order, as shown in figure 3, the reactive-load compensation fills
Put 10 and further include control unit 105.
Detailed, described control unit 105 is connected with the tunable capacitor control terminal and the switch control terminal respectively, is used
Electric current, voltage and the power factor of electric energy are exported in the pressure regulator 101 obtained according to the monitoring unit 102 detection, it is raw
Into capacitance adjustment instruction and switch order, to adjust the closure of the capacitance of the tunable capacitor 131 and the switch 133 or disconnected
Open.
The tunable capacitor control terminal of tunable capacitor 131 is after the capacitance adjustment signal of control unit 105 is received, it is possible to
The capacitance of tunable capacitor 131, is adjusted to the capacitance of instruction instruction by the particular content instructed according to capacitance adjustment.Compensation is single
Switch 133 in member 103, can be according to the particular content of switch order, by corresponding switch 133 after switch order is received
Closure, or corresponding switch 133 is disconnected, realize and different fixed capacity 132 or tunable capacitor 131 are linked into circuit
In, to realize various forms of capacity compensations.
By closing or disconnecting the switch 133 in compensating unit 103, the size of compensation capacity can be adjusted.Have in one kind
In body embodiment, the capacitance of the fixed capacity 132 can be to reduce successively, or can be by several fixed capacities
132 be divided into each fixed capacity 132 in some groups, every group capacitance it is identical, capacitance has certain gradient between group and group
Difference.The embodiment of the present application is not intended to limit the design parameter of fixed capacity 132 and tunable capacitor 131, can be selected according to being actually needed
With suitable fixed capacity 132 and tunable capacitor 131.
The current lifting device 104 is connected with the pressure regulator 101, for the current transformation that exports the pressure regulator 101 extremely
Predetermined current, exports to external equipment.
Detailed, the input terminal of the current lifting device 104 includes the first terminals 141 and the second terminals 142, the power
The voltage input end of factor detection module 124 includes first voltage input terminal and second voltage input terminal, first terminals
141 output terminal respectively with the static contact 112, first voltage input terminal and the compensating unit 103 is connected, and described second connects
The other end, second voltage input terminal and the compensating unit with the first winding of the current transformer 122 respectively of line end 142
103 input terminal connection.
The both ends of the primary side winding of the current lifting device 104 are respectively as 141 and second terminals of the first terminals
142, the both ends of the vice-side winding of the current lifting device 104 are connected with the external equipment respectively.
The course of work of above-mentioned reactive power compensator 10 is briefly described below.
When reactive power compensator 10 works, pressure regulator 101 is connected with external power supply, after powering on, pressure regulator 101
Output terminal can power to current lifting device 104.At this point it is possible to the reading by observing power factor detection module 124, obtains
Pressure regulator 101 exports the power factor of electric energy.Meanwhile by closing the different switches 133 in compensating unit 103, adjust pressure regulation
Device 101 exports the power factor of electric energy.When the power factor obtained by power factor detection module 124 is close to 1, will compensate
The switch 133 that tunable capacitor 131 is connected in unit 103 closes, and the capacitance of tunable capacitor 131 is finely adjusted, until power
Factor detection module 124 detects obtained power factor reading as 1 or close to 1.At this time, it is possible to by current lifting device 104 be outer
Portion's equipment provides required electric current.Further, it is also possible to the reading and current detection module 123 of recording voltage detection module 121
Reading.When the output terminal of current lifting device 104 provides high current to standard current transformer and subject current transformer, pressure regulator
101 load capacity is smaller, and pressure regulator 101 can be monitored in real time by the voltage detection module 121 and current detection module 123
Output capacity.
Reactive power compensator 10 provided by the embodiments of the present application, by pressure regulator 101 can to the electric energy of external power supply into
Row is adjusted, and compensating unit 103 is compensated using the reactance that 131 groups of tunable capacitor can load pressure regulator 101, improves pressure regulation
Power factor when device 101 works, can improve the voltage regulation result of pressure regulator 101.Use the less pressure regulator 101 of apparent energy
Larger electric current can also be obtained, the electric current that current lifting device 104 exports is met the needs of detecting current transformer, reduction pair
The consumption of electric energy, saves the energy.
As shown in figure 4, the embodiment of the present application additionally provides a kind of mutual inductor detection device 20, including above-mentioned reactive-load compensation dress
10 are put, which further includes power-supply device 21, and the power-supply device 21 is used to carry for the reactive power compensator
For electric energy.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the invention, for the skill of this area
For art personnel, the invention may be variously modified and varied.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should all be included in the protection scope of the present invention.It should be noted that：Similar label and letter exists
Similar terms is represented in following attached drawing, therefore, once being defined in a certain Xiang Yi attached drawing, is then not required in subsequent attached drawing
It is further defined and is explained.
The above description is merely a specific embodiment, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all be contained
Cover within protection scope of the present invention.Therefore, protection scope of the present invention answers the scope of the claims of being subject to.
Claims (10)
- A kind of 1. reactive power compensator, it is characterised in that including pressure regulator, monitoring unit, compensating unit and current lifting device, wherein：The pressure regulator is connected with external power supply and the monitoring unit respectively, for the electric energy that the external power supply inputs into Row is adjusted, and the electric energy after adjusting is exported to the current lifting device；The monitoring unit is used for electric current, voltage and the power factor for detecting the pressure regulator output electric energy；The compensating unit is connected with the output terminal of the monitoring unit, which includes the adjustable tunable capacitor of capacitance Group, the compensating unit are used for the reactance for compensating the pressure regulator by the tunable capacitor group and loading；The current lifting device is connected with the pressure regulator, for by the current transformation that the pressure regulator exports to predetermined current, output To external equipment.
- 2. reactive power compensator according to claim 1, it is characterised in that the pressure regulator includes tap-changing windings, described The input terminal of tap-changing windings is connected with the external power supply, and the output terminal of the pressure regulator includes static contact and moving contact；The monitoring unit includes voltage detection module, and the voltage detection module connects with the static contact and moving contact respectively Connect, for detecting the voltage of the pressure regulator output electric energy.
- 3. reactive power compensator according to claim 2, it is characterised in that the monitoring unit further includes Current Mutual Inductance Device, current detection module and power factor detection module, wherein：One end of the first winding of the current transformer is connected with the moving contact, the first winding of the current transformer The other end is connected with the input terminal of the current lifting device；One end of the current detection module is connected with one end of the secondary winding of the current transformer, the current detecting mould The other end of block is connected with a current input terminal of the power factor detection module, which is used to detect institute State the electric current of pressure regulator output electric energy；Another current input terminal of the power factor detection module and the other end of the secondary winding of the current transformer connect Connect, the voltage input end of the power factor detection module is connected with the input terminal of the current lifting device, power factor detection mould Block is used for the power factor for detecting the pressure regulator output electric energy.
- 4. reactive power compensator according to claim 3, it is characterised in that the tunable capacitor group include it is at least one can Capacitance, at least one fixed capacity, at least one switch are adjusted, wherein：The tunable capacitor, fixed capacity form parallel circuit with after the corresponding switch series connection respectively, the parallel circuit Input terminal of the one end as the compensating unit, the output terminal of the other end of the parallel circuit as the compensating unit are described Input terminal of the input, output end of compensating unit respectively with the current lifting device is connected.
- 5. reactive power compensator according to claim 4, it is characterised in that the input terminal of the current lifting device connects including first Line end and the second terminals, the voltage input end of the power factor detection module include first voltage input terminal and second voltage Input terminal, first terminals connect with the output terminal of the static contact, first voltage input terminal and the compensating unit respectively Connect, second terminals other end with the first winding of the current transformer, second voltage input terminal and described respectively The input terminal connection of compensating unit.
- 6. reactive power compensator according to claim 4, it is characterised in that the tunable capacitor includes being used to receive capacitance The tunable capacitor control terminal of regulating command, the switch include being used for the switch control terminal for receiving switch order, the reactive-load compensation Device further includes control unit, wherein：Described control unit is connected with the tunable capacitor control terminal and the switch control terminal respectively, for according to the monitoring Electric current, voltage and the power factor for the pressure regulator output electric energy that unit detects, the instruction of generation capacitance adjustment and switch Instruction, to adjust the closure of the capacitance of the tunable capacitor and the switch or disconnection.
- 7. reactive power compensator according to claim 5, it is characterised in that the both ends of the primary side winding of the current lifting device point Not Zuo Wei first terminals and the second terminals, the both ends of the vice-side winding of the current lifting device respectively with the external equipment Connection.
- 8. according to the reactive power compensator described in claim 4 to 7 any one, it is characterised in that the fixed capacity is certainly More formula capacitor.
- 9. according to the reactive power compensator described in claim 4 to 7 any one, it is characterised in that the tunable capacitor is certainly More formula capacitor.
- 10. a kind of mutual inductor detection device, it is characterised in that including the reactive-load compensation dress described in claim 1 to 9 any one Put, which further includes power-supply device, and the power-supply device is used to provide electric energy for the reactive power compensator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201711309057.XA CN107947191A (en) | 2017-12-11 | 2017-12-11 | Reactive power compensator and mutual inductor detection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711309057.XA CN107947191A (en) | 2017-12-11 | 2017-12-11 | Reactive power compensator and mutual inductor detection device |
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| CN107947191A true CN107947191A (en) | 2018-04-20 |
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| CN201711309057.XA Pending CN107947191A (en) | 2017-12-11 | 2017-12-11 | Reactive power compensator and mutual inductor detection device |
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Cited By (2)
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| CN111443323A (en) * | 2020-04-26 | 2020-07-24 | 国网福建省电力有限公司 | 30000A current transformer field mobile calibration system |
| WO2022042172A1 (en) * | 2020-08-25 | 2022-03-03 | 深圳市知用电子有限公司 | Attenuator and differential voltage probe |
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