CN209016717U - Low-voltage network active unbalance compensation device - Google Patents
Low-voltage network active unbalance compensation device Download PDFInfo
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- CN209016717U CN209016717U CN201821626245.5U CN201821626245U CN209016717U CN 209016717 U CN209016717 U CN 209016717U CN 201821626245 U CN201821626245 U CN 201821626245U CN 209016717 U CN209016717 U CN 209016717U
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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
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E40/50—Arrangements for eliminating or reducing asymmetry in polyphase networks
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Abstract
The utility model provides low-voltage network active unbalance compensation device, including main controller, three-phase imbalance abatement modules, reactive compensation module, first Current Mutual Inductance component, second Current Mutual Inductance component, first Current Mutual Inductance component accesses in grid side three-phase line, second Current Mutual Inductance component and the first Current Mutual Inductance modules in parallel, the primary side of second Current Mutual Inductance component, secondary side respectively with three-phase imbalance abatement modules, main controller connection, main controller is connect with reactive compensation module, reactive compensation module connects between the secondary side and load-side of the first Current Mutual Inductance component.The utility model, which controls reactive compensation module by three-phase imbalance abatement modules and main controller, to be coordinated to compensate jointly, realize equipment power factor (PF) is too low be disturbed when, work can be continued to run, applicability, reliability and the stability for increasing three-phase imbalance improvement have the advantages that low, the not charged adjustment three-phase load of loss, three-phase current unbalance regulation effect are good, small in size.
Description
Technical field
The utility model relates to low-voltage network three-phase load unbalance Treatment process field more particularly to low-voltage networks
Active unbalance compensation device.
Background technique
Active unbalance compensation device be a kind of integrated modern test and control, power electronics, wireless telecommunications, automation control etc. first
The active unbalance controlling device being integrated into technology.At present in low-voltage network system, the more serious phenomenon of three-phase imbalance
It is primarily present in rural power grids area, this area is with a varied topography, radius of electricity supply is generally longer, user power utilization is idle, and content is larger, so
It is easy to appear phenomena such as power factor (PF) is too low, easily disturbed, three-phase imbalance module for compensating effect is influenced, keeps equipment normal
Work, reduces utilization rate of equipment and installations and use value, is not able to satisfy the increasingly developed demand in market.
Utility model content
For overcome the deficiencies in the prior art, the purpose of this utility model is to provide low-voltage network active unbalance benefits
Device is repaid, solving phenomena such as power factor (PF) in power grid is too low, easily disturbed influences three-phase imbalance module for compensating effect, makes to set
It is standby to can not work normally, the problem of reducing utilization rate of equipment and installations and use value, not being able to satisfy the increasingly developed demand in market.
The utility model provides low-voltage network active unbalance compensation device, including main controller, three-phase imbalance are administered
Module, reactive compensation module, the first Current Mutual Inductance component, the second Current Mutual Inductance component, the first Current Mutual Inductance component access
In grid side three-phase line, the primary side of the second Current Mutual Inductance component is connect with the primary side of the first Current Mutual Inductance component,
The secondary side of the second Current Mutual Inductance component is connect with the secondary side of the first Current Mutual Inductance component, the second Current Mutual Inductance group
The primary side of part is connect with the first current acquisition end of the three-phase imbalance abatement modules, the second Current Mutual Inductance component
Secondary side is connect with the second current acquisition end of the main controller, the second current acquisition end of the three-phase imbalance abatement modules
It is connect with the first current acquisition end of the main controller, the main controller is connect with the reactive compensation module, the idle benefit
Module is repaid to connect between the secondary side and load-side of the first Current Mutual Inductance component.
Further, the first Current Mutual Inductance component includes the first current transformer, the second current transformer, third electricity
Current transformer, first current transformer access in grid side A phase line, and second current transformer accesses grid side B
In phase line, in the third Current Mutual Inductance access grid side C phase line.
Further, the second Current Mutual Inductance component includes the 4th current transformer, the 5th current transformer, the 6th electricity
The primary side of current transformer, the 4th current transformer is connect with the primary side of the first current transformer, the 4th electric current
The secondary side of mutual inductor is connect with the secondary side of the first current transformer, the primary side of the 5th current transformer and the second electricity
The primary side of current transformer connects, and the secondary side of the 5th current transformer is connect with the secondary side of the second current transformer,
The primary side of 6th current transformer is connect with the primary side of third current transformer, and the two of the 6th current transformer
Secondary side is connect with the secondary side of third current transformer, and the 4th current transformer, the 5th current transformer, the 6th electric current are mutual
The primary side of sensor is connect with the first current acquisition end of the three-phase imbalance abatement modules, the 4th current transformer,
5th current transformer, the secondary side of the 6th current transformer are connect with the second current acquisition end of the main controller.
Further, the three-phase imbalance abatement modules are made of static reactive generator.
Further, the reactive compensation module include the first reactive power compensation circuit, the second reactive power compensation circuit, third without
Function compensation circuit, first reactive power compensation circuit connect between A phase line and B phase line, second reactive power compensation circuit
It connects between B phase line and C phase line, the third reactive power compensation circuit connects between A phase line and C phase line.
Further, first reactive power compensation circuit by sequentially connected first breaker of plastic casing, the first combination switch,
First reactor, first capacitor device ontology, second reactive power compensation circuit is by sequentially connected second breaker of plastic casing, second
Combination switch, the second reactor, the second capacitor body, the third reactive power compensation circuit are broken by sequentially connected third plastic housing
Road device, third combination switch, third reactor, third capacitor body, the third combination switch are connect with the main controller.
Further, the first capacitor device ontology, the second capacitor body, third capacitor body are by several capacitors
Device composition.
It further, further include the 4th breaker of plastic casing, the reactive compensation module passes through the 4th breaker of plastic casing
It accesses in three-phase line.
It further, further include Surge Protector, Surge Protector access institute in parallel with the reactive compensation module
State the 4th breaker of plastic casing.
Further, the main controller is DC863F idle compensating control.
Compared with prior art, the utility model has the beneficial effects that:
The utility model provides low-voltage network active unbalance compensation device, including main controller, three-phase imbalance are administered
Module, reactive compensation module, the first Current Mutual Inductance component, the second Current Mutual Inductance component, the first Current Mutual Inductance component access power grid
In the three-phase line of side, the primary side of the second Current Mutual Inductance component is connect with the primary side of the first Current Mutual Inductance component, the second electric current
The secondary side of mutual inductance component is connect with the secondary side of the first Current Mutual Inductance component, the primary side and three-phase of the second Current Mutual Inductance component
First current acquisition end of uneven abatement modules connects, the secondary side of the second Current Mutual Inductance component and the second electric current of main controller
Collection terminal connection, the second current acquisition end of three-phase imbalance abatement modules and the first current acquisition end of main controller connect, main
Control device is connect with reactive compensation module, and reactive compensation module connects between the secondary side and load-side of the first Current Mutual Inductance component.
The utility model, which controls reactive compensation module by three-phase imbalance abatement modules and main controller, to be coordinated to compensate jointly, real
Existing equipment power factor (PF) is too low be disturbed when, work can be continued to run, increase the applicability, reliable of three-phase imbalance improvement
Property and stability, have that low, not charged adjustment three-phase load, three-phase current unbalance regulation effect is lost is good, small in size excellent
Point.
The above description is merely an outline of the technical solution of the present invention, in order to better understand the skill of the utility model
Art means, and can be implemented in accordance with the contents of the specification, below on the preferred embodiment of the present invention and the accompanying drawings in detail
It describes in detail bright as after.Specific embodiment of the present utility model is shown in detail by following embodiment and its attached drawing.
Detailed description of the invention
Attached drawing described herein is used to provide a further understanding of the present invention, and is constituted part of this application,
The exemplary embodiment of the utility model and the description thereof are used to explain the utility model, does not constitute to the improper of the utility model
It limits.In the accompanying drawings:
Fig. 1 is that the low-voltage network active unbalance compensation device of the utility model runs signal in distribution network system
Figure；
Fig. 2 is the low-voltage network active unbalance compensation device operation schematic diagram of the utility model.
Specific embodiment
In the following, being described further in conjunction with attached drawing and specific embodiment to the utility model, it should be noted that
Under the premise of not colliding, it can be formed in any combination between various embodiments described below or between each technical characteristic new
Embodiment.
Low-voltage network active unbalance compensation device, as Figure 1-Figure 2, including main controller, three-phase imbalance are administered
Module, reactive compensation module, the first Current Mutual Inductance component, the second Current Mutual Inductance component, the first Current Mutual Inductance component access power grid
In the three-phase line of side, the primary side of the second Current Mutual Inductance component is connect with the primary side of the first Current Mutual Inductance component, the second electric current
The secondary side of mutual inductance component is connect with the secondary side of the first Current Mutual Inductance component, the primary side and three-phase of the second Current Mutual Inductance component
First current acquisition end of uneven abatement modules connects, the secondary side of the second Current Mutual Inductance component and the second electric current of main controller
Collection terminal connection, the second current acquisition end of three-phase imbalance abatement modules and the first current acquisition end of main controller connect, main
Control device is connect with reactive compensation module, and reactive compensation module connects between the secondary side and load-side of the first Current Mutual Inductance component.
Preferably, main controller is DC863F idle compensating control.Main controller (DC863F) is the control core of whole device, and three-phase is not
Balance abatement modules, reactive compensation module are executing agency, different from the distribution situation of load according to the capacity of distribution transformer
Can flexible choice three-phase imbalance abatement modules and reactive compensation module capacity.Main controller and three-phase imbalance abatement modules,
It is communicated to connect between reactive compensation module, progress information exchange, in Fig. 1, Us is distribution transformer voltage, and is is distribution transforming A phase electricity
Current on line side, il are distribution transforming A phase load side electric current, ic be the phase grid side exit distribution transforming A and distribution transforming A phase load side connecting part it
Between route electric current, current signal is acquired by current detection circuit in the present apparatus, and current signal is transferred to processor,
Rapidly extracting reactive current, equal, the phase phase by current follow-up control generation control signal control drive circuit output amplitude
Anti- compensation electric current offsets reactive current, improves system power factor, balance system three-phase current.
1TA is the first Current Mutual Inductance component in Fig. 2, and 1TA includes the first current transformer 1TAa, the second current transformer
1TAb, third current transformer 1TAc, the first current transformer 1TAa are accessed in grid side A phase line, the second current transformer
1TAb is accessed in grid side B phase line, and third Current Mutual Inductance 1TAc is accessed in grid side C phase line.L1 is A phase line, L2 B
Phase line, L3 are B phase line, i.e., L1, L2, L3 are three-phase line, it is noted that only illustrate three-phase in Fig. 2 with single line
Electric line, SVG are three-phase imbalance abatement modules, it is preferred that three-phase imbalance abatement modules are made of static reactive generator.
2TA is the second Current Mutual Inductance component, and 2TA includes the 4th current transformer 2TAa, the 5th current transformer 2TAb, and the 6th electric current is mutual
Sensor 2TAc；The primary side of 4th current transformer 2TAa is connect with the primary side of the first current transformer 1TAa, the 4th electric current
The secondary side of mutual inductor 2TAa is connect with the secondary side of the first current transformer 1TAa, the primary side of the 5th current transformer 2TAb
It is connect with the primary side of the second current transformer 1TAb, the secondary side and the second current transformer of the 5th current transformer 2TAb
The secondary side of 1TAb connects, and the primary side of the 6th current transformer 2TAc is connect with the primary side of third current transformer 1TAc,
The secondary side of 6th current transformer 2TAc is connect with the secondary side of third current transformer 1TAc, three-phase imbalance abatement modules
SVG, main controller respectively include 6 current acquisition ends, and 6 current acquisition ends include the A1 current acquisition end for acquiring A phase current, A2
Current acquisition end, B1 current acquisition end, the B2 current acquisition end of acquisition B phase current, the C1 current acquisition end of acquisition C phase current,
C2 current acquisition end, the primary side of the 4th current transformer 2TAa, the 5th current transformer 2TAb, the 6th current transformer 2TAc
It is connect with the A1 current acquisition end of three-phase imbalance abatement modules SVG, B1 current acquisition end, C1 current acquisition end, the 4th electric current
Mutual inductor 2TAa, the 5th current transformer 2TAb, the secondary side of the 6th current transformer 2TAc and the A2 current acquisition of main controller
End, B2 current acquisition end, the connection of C2 current acquisition end.The A2 current acquisition end of three-phase imbalance abatement modules SVG, B2 electric current are adopted
The A1 current acquisition end, B1 current acquisition end, C1 current acquisition end for collecting end, C2 current acquisition end and main controller connect.Pass through
One Current Mutual Inductance component 1TA is in parallel with the second Current Mutual Inductance component 2TA's, so that main controller and three-phase imbalance abatement modules
The acquisition electric current that SVG is received is the electric current of load-side, is no longer needed to the first Current Mutual Inductance component 1TA and the second Current Mutual Inductance group
The electric current of part 2TA acquisition is calculated, the current signal of the Current on Grid side based on the received three-phase imbalance abatement modules SVG
It is adjusted.
Reactive compensation module includes the first reactive power compensation circuit, the second reactive power compensation circuit, third reactive power compensation circuit, the
One reactive power compensation circuit connects between A phase line and B phase line, the second reactive power compensation circuit connect B phase line and C phase line it
Between, third reactive power compensation circuit connects between A phase line and C phase line.1FK is the first combination switch, 2FK second in Fig. 2
Combination switch, 3FK are third combination switch, and combination switch is tape relay thyristor combination switch in the present embodiment, and QF1 is
First breaker of plastic casing, QF2 are the second breaker of plastic casing, and QF3 is third breaker of plastic casing, and QF is the 4th breaker of plastic casing, 1L
For the first reactor, 2L is the second reactor, and 3L is third reactor, and 1C is first capacitor device ontology, and 2C is the second capacitor
Ontology, 3C are third capacitor body, it is noted that illustrate three-phase electricity route and any two-phase electricity into single line item in Fig. 2
Route.First reactive power compensation circuit is by sequentially connected first breaker of plastic casing QF1, the first combination switch 1FK, the first reactor
1L, first capacitor device ontology 1C, the second reactive power compensation circuit compound are opened by sequentially connected second breaker of plastic casing QF2, second
2FK, the second reactor 2L, the second capacitor body 2C are closed, third reactive power compensation circuit is by sequentially connected third plastic housing open circuit
Device QF3, third combination switch 3FK, third reactor 3L, third capacitor body 3C, it is the first reactive power compensation circuit, second idle
The intercommunication connection of compensation circuit, third reactive power compensation circuit, third combination switch 3FK are connect with main controller, and first is multiple
Combination switch 1FK acquires the electric current of first capacitor device ontology 1C, is controlled according to the electric current of first capacitor device ontology 1C, to first
Capacitor body 1C carries out overcurrent protection, and the second combination switch 2FK acquires the electric current of the second capacitor body 2C, according to the second electricity
The electric current of vessel 2C is controlled, and carries out overcurrent protection, third combination switch 3FK acquisition the to the second capacitor body 2C
The electric current of three capacitor body 3C is controlled according to the electric current of third capacitor body 3C, to third capacitor body 3C into
Row overcurrent protection.If first capacitor device ontology 1C, the second capacitor body 2C, third capacitor body 3C are by dry condenser group
At.Reactive compensation module is accessed in three-phase line by the 4th breaker of plastic casing QF.Improvement platform area power factor (PF) is too low and influences
To when the compensation of normal three-phase imbalance, main controller based on the received start to work by current control reactive compensation module, according to connecing
The current control reactive compensation module of receipts switching between A phase firewire, B phase firewire, C phase firewire, content that monitoring field is idle, and
Auto-action compensates, and realizes that three-phase imbalance module and reactive compensation module are worked in coordination work, and three-phase imbalance is increased
Suitable environment is administered, so that lower area of power factor (PF) can also continue to run work to the present apparatus at the scene, and makes backend load
Always switching keeps three-phase voltage balance to greatest extent, realizes three-phase balance in the highest phase of voltage.It is single administering
In the case that only three-phase imbalance or idle content are excessive, three-phase imbalance abatement modules can separate independent with reactive compensation module
Work, such field application is flexible for installation, and three-phase current unbalance is administered and reactive compensation effect is good.In three-phase imbalance
With power factor is too low exist simultaneously when, three-phase imbalance abatement modules are operated together with reactive compensation module, according to acquisition
Three-phase current carries out switching work as switching control parameter, substantially increases the utilization rate, reliability and stability of device,
The application range for increasing device adapts to the more complicated power distribution station of live power utilization environment.
In Fig. 2, SPD is Surge Protector, Surge Protector the 4th breaker of plastic casing of access in parallel with reactive compensation module
QF protects the surge of indirect thunder and lightning and direct effects of lightning or other instantaneous overvoltages.
The utility model provides low-voltage network active unbalance compensation device, including main controller, three-phase imbalance are administered
Module, reactive compensation module, the first Current Mutual Inductance component, the second Current Mutual Inductance component, the first Current Mutual Inductance component access power grid
In the three-phase line of side, the primary side of the second Current Mutual Inductance component is connect with the primary side of the first Current Mutual Inductance component, the second electric current
The secondary side of mutual inductance component is connect with the secondary side of the first Current Mutual Inductance component, the primary side and three-phase of the second Current Mutual Inductance component
First current acquisition end of uneven abatement modules connects, the secondary side of the second Current Mutual Inductance component and the second electric current of main controller
Collection terminal connection, the second current acquisition end of three-phase imbalance abatement modules and the first current acquisition end of main controller connect, main
Control device is connect with reactive compensation module, and reactive compensation module connects between the secondary side and load-side of the first Current Mutual Inductance component.
The utility model, which controls reactive compensation module by three-phase imbalance abatement modules and main controller, to be coordinated to compensate jointly, real
Existing equipment power factor (PF) is too low be disturbed when, work can be continued to run, increase the applicability, reliable of three-phase imbalance improvement
Property and stability, have that low, not charged adjustment three-phase load, three-phase current unbalance regulation effect is lost is good, small in size excellent
Point.
More than, the only preferred embodiment of the utility model not makees limit in any form to the utility model
System；The those of ordinary skill of all industry can be shown in by specification attached drawing and above and swimmingly implement the utility model；But
It is that all those skilled in the art are not departing within the scope of technical solutions of the utility model, utilizes disclosed above skill
Art content and the equivalent variations of a little variation, modification and evolution made, are the equivalent embodiment of the utility model；Meanwhile
The variation, modification and evolution etc. of all substantial technological any equivalent variationss to the above embodiments according to the utility model,
Within the protection scope for still falling within the technical solution of the utility model.
Claims (10)
1. low-voltage network active unbalance compensation device, it is characterised in that: including main controller, three-phase imbalance abatement modules,
Reactive compensation module, the first Current Mutual Inductance component, the second Current Mutual Inductance component, the first Current Mutual Inductance component access grid side
In three-phase line, the primary side of the second Current Mutual Inductance component is connect with the primary side of the first Current Mutual Inductance component, and described
The secondary side of two Current Mutual Inductance components is connect with the secondary side of the first Current Mutual Inductance component, and the one of the second Current Mutual Inductance component
Secondary side is connect with the first current acquisition end of the three-phase imbalance abatement modules, the secondary side of the second Current Mutual Inductance component
Connect with the second current acquisition end of the main controller, the second current acquisition end of the three-phase imbalance abatement modules with it is described
First current acquisition end of main controller connects, and the main controller is connect with the reactive compensation module, the reactive compensation module
It connects between the secondary side and load-side of the first Current Mutual Inductance component.
2. low-voltage network active unbalance compensation device as described in claim 1, it is characterised in that: first electric current is mutual
Feeling component includes the first current transformer, the second current transformer, third current transformer, the first current transformer access
In grid side A phase line, in the second current transformer access grid side B phase line, the third Current Mutual Inductance access electricity
In net side C phase line.
3. low-voltage network active unbalance compensation device as claimed in claim 2, it is characterised in that: second electric current is mutual
Feel component include the 4th current transformer, the 5th current transformer, the 6th current transformer, the one of the 4th current transformer
Secondary side is connect with the primary side of the first current transformer, the secondary side of the 4th current transformer and the first current transformer
Secondary side connection, the primary side of the 5th current transformer are connect with the primary side of the second current transformer, the 5th electricity
The secondary side of current transformer is connect with the secondary side of the second current transformer, the primary side and third of the 6th current transformer
The primary side of current transformer connects, and the secondary side of the 6th current transformer and the secondary side of third current transformer connect
Connect, the 4th current transformer, the 5th current transformer, the 6th current transformer primary side and the three-phase imbalance control
Manage the first current acquisition end connection of module, the 4th current transformer, the 5th current transformer, the 6th current transformer
Secondary side is connect with the second current acquisition end of the main controller.
4. low-voltage network active unbalance compensation device as claimed in claim 3, it is characterised in that: the three-phase imbalance
Abatement modules are made of static reactive generator.
5. low-voltage network active unbalance compensation device as described in claim 1, it is characterised in that: the reactive compensation mould
Block includes the first reactive power compensation circuit, the second reactive power compensation circuit, third reactive power compensation circuit, first reactive power compensation circuit
It connecing between A phase line and B phase line, second reactive power compensation circuit connects between B phase line and C phase line, and described
Three reactive power compensation circuits connect between A phase line and C phase line.
6. low-voltage network active unbalance compensation device as claimed in claim 5, it is characterised in that: the first idle benefit
Circuit is repaid by sequentially connected first breaker of plastic casing, the first combination switch, the first reactor, first capacitor device ontology, it is described
Second reactive power compensation circuit is by sequentially connected second breaker of plastic casing, the second combination switch, the second reactor, the second capacitor
Ontology, the third reactive power compensation circuit by sequentially connected third breaker of plastic casing, third combination switch, third reactor,
Third capacitor body, the third combination switch are connect with the main controller.
7. low-voltage network active unbalance compensation device as claimed in claim 6, it is characterised in that: the first capacitor device
If ontology, the second capacitor body, third capacitor body are made of dry condenser.
8. low-voltage network active unbalance compensation device as claimed in claim 6, it is characterised in that: further include the 4th plastic housing
Breaker, the reactive compensation module are accessed in three-phase line by the 4th breaker of plastic casing.
9. low-voltage network active unbalance compensation device as claimed in claim 8, it is characterised in that: further include surge protection
Device, Surge Protector access fourth breaker of plastic casing in parallel with the reactive compensation module.
10. low-voltage network active unbalance compensation device as described in any one of claims 1-9, it is characterised in that: institute
Stating main controller is DC863F idle compensating control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821626245.5U CN209016717U (en) | 2018-10-08 | 2018-10-08 | Low-voltage network active unbalance compensation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821626245.5U CN209016717U (en) | 2018-10-08 | 2018-10-08 | Low-voltage network active unbalance compensation device |
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| Publication Number | Publication Date |
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| CN209016717U true CN209016717U (en) | 2019-06-21 |
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ID=66837809
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| CN201821626245.5U Active CN209016717U (en) | 2018-10-08 | 2018-10-08 | Low-voltage network active unbalance compensation device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112305361A (en) * | 2020-11-06 | 2021-02-02 | 江苏省电力试验研究院有限公司 | Temperature rise test three-phase unbalanced current compensation system and control method |
| CN113746117A (en) * | 2021-09-15 | 2021-12-03 | 南方电网电力科技股份有限公司 | Unbalanced three-phase administers module and portable power source car |
-
2018
- 2018-10-08 CN CN201821626245.5U patent/CN209016717U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112305361A (en) * | 2020-11-06 | 2021-02-02 | 江苏省电力试验研究院有限公司 | Temperature rise test three-phase unbalanced current compensation system and control method |
| CN113746117A (en) * | 2021-09-15 | 2021-12-03 | 南方电网电力科技股份有限公司 | Unbalanced three-phase administers module and portable power source car |
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