CN208571614U - A kind of single-phase reactive power compensator - Google Patents
A kind of single-phase reactive power compensator Download PDFInfo
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- CN208571614U CN208571614U CN201821222064.6U CN201821222064U CN208571614U CN 208571614 U CN208571614 U CN 208571614U CN 201821222064 U CN201821222064 U CN 201821222064U CN 208571614 U CN208571614 U CN 208571614U
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- 239000003990 capacitor Substances 0.000 claims abstract description 23
- 239000000126 substance Substances 0.000 claims description 4
- 230000007935 neutral effect Effects 0.000 abstract description 12
- 238000005516 engineering process Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 5
- 230000005540 biological transmission Effects 0.000 abstract description 4
- 238000003908 quality control method Methods 0.000 abstract description 2
- 230000006641 stabilisation Effects 0.000 abstract description 2
- 238000011105 stabilization Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 239000004020 conductor Substances 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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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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- 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
- Y02E40/50—Arrangements for eliminating or reducing asymmetry in polyphase networks
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Abstract
A kind of single-phase reactive power compensator belongs to electric power quality control technology field, including breaker of plastic casing, fastp-acting fuse, anti-parallel thyristor, single-phase series reactor, Monophase electric power capacitor, intelligent controller.Single-phase compensating unit is connected between the line voltage in three-phase electrical power system in the utility model, using single-phase independent control technology, it is the most reasonable between the compensation way of the single-phase electric devices being connected to three-phase electrical power system neutral voltage and effect, safe and reliable, compensation is quick and precisely, compensate switching one-time-reach-place, to improve power factor of electric network, improve electric energy source utilization rate, improvement quality of voltage, reduction electrical power trans mission/distribution system network loss, guarantee power system security stabilization, economical operation, there is good compensation effect.
Description
Technical field
The utility model belongs to electric power quality control technology field, especially relates to a kind of single-phase idle benefit
Repay device.
Background technique
Reactive power compensator is widely used in power grid, to improve power factor of electric network, reduce idle conveying, raising
Electric energy source utilization rate improves quality of voltage, sufficiently excavates equipment for power transmission and distribution capacity, increase active conveying, reduce electrical power trans mission/distribution system
Network loss, the safety and stability for guaranteeing electric system, economical operation.
Currently, there are two types of compensation ways for widely applied reactive power compensator: one is three-phase compensation mode, capacitor is adopted
It is controlled with delta connection three-phase, is compensated for three-phase equilibrium simultaneously；One is phase splitting compensation mode, capacitor is connect using star
Method three-phase independent control is compensated for three-phase imbalance.There is a kind of single-phase electricity consumption in a large amount of electrical equipment in factory and enterprise
Equipment, such as single-phase mash welder, the characteristics of this single-phase electric devices, are between the line voltage being connected in three-phase electrical power system, above-mentioned
Two kinds of compensation ways due to the single-phase electric devices connection that is compensated is inconsistent is unable to satisfy compensation demand, such as connect using star
It will cause neutral potential offset when method phase splitting compensation mode, certain phase voltage caused to increase, certain phase voltage reduces, at this time capacitor
Capacity changes, and compensation precision is affected, and especially when occurring serious uneven, capacitor operation is extremely unstable, reduces
The safe operation reliability of compensation device, hidden danger are larger.
Utility model content
The technical problem to be solved by the utility model is to provide a kind of single-phase reactive power compensators, for the prior art
In be unable to satisfy the technical issues of compensation of the single-phase electric devices being connected between three-phase electrical power system neutral voltage needs.
A kind of single-phase reactive power compensator, including breaker of plastic casing, fastp-acting fuse, anti-parallel thyristor, single-phase series
Reactor, Monophase electric power capacitor and intelligent controller,
The breaker of plastic casing is respectively connected with A phase, B phase and C phase three phase mains, and the leading-out terminal of breaker of plastic casing connects
Connect three single-phase compensating units, respectively A-B phase compensating unit, B-C phase compensating unit and C-A phase compensating unit；It is described single-phase
Compensating unit includes three compensation circuits；The compensation circuit is by fastp-acting fuse, anti-parallel thyristor, single-phase series reactor
It is connected in series with Monophase electric power capacitor；The intelligent controller respectively with A-B phase compensating unit, B-C phase compensating unit and
The connection of C-A phase compensating unit；
The A-B phase compensating unit is connected between A phase and B phase, and A phase power supply passes through fastp-acting fuse, inverse parallel crystalline substance lock
Pipe, single-phase series reactor and Monophase electric power capacitor are connect with B phase power supply；
The B-C phase compensating unit is connected between B phase and C phase, and B phase power supply passes through fastp-acting fuse, inverse parallel crystalline substance lock
Pipe, single-phase series reactor and Monophase electric power capacitor are connect with C phase power supply；
The C-A phase compensating unit is connected between C phase and A phase, and C phase power supply passes through fastp-acting fuse, inverse parallel crystalline substance lock
Pipe, single-phase series reactor and Monophase electric power capacitor are connect with A phase power supply.
Through the above design, the utility model can be brought the following benefits:
Single-phase compensating unit in the utility model is connected between the line voltage in three-phase electrical power system, using single-phase independence
Control technology closes the compensation way of the single-phase electric devices being connected to three-phase electrical power system neutral voltage and effect the most
Reason not will cause the phenomenon that neutral potential offset, neutral line current are excessive, transformer neutral conductor overheat is burnt, and have i.e.
It can be realized single-phase imbalance compensation, and can be realized the function of three-phase equilibrium compensation.
Utility model works are safe and reliable, compensate quick and precisely, switching one-time-reach-place compensated, to improve grid power
Factor improves electric energy source utilization rate, improves quality of voltage, reduce electrical power trans mission/distribution system network loss, guarantee power system security stabilization, warp
Ji operation, has good compensation effect.
Detailed description of the invention
The utility model is further described below in conjunction with the drawings and specific embodiments:
Fig. 1 is a kind of single-phase reactive power compensator electrical schematic diagram of the utility model.
1- breaker of plastic casing, 2- fastp-acting fuse, 3- anti-parallel thyristor, 4- single-phase series reactor, 5- are single-phase in figure
Power capacitor, 6- intelligent controller.
Specific embodiment
A kind of single-phase reactive power compensator, as shown in Figure 1, the device include breaker of plastic casing 1, fastp-acting fuse 2, it is anti-simultaneously
Join thyristor 3, single-phase series reactor 4, Monophase electric power capacitor 5, intelligent controller 6, the major loop of device is disconnected by plastic housing
Road device 1 is connected with three phase mains A phase, B phase and C, and the leading-out terminal of breaker of plastic casing 1 connects three single-phase compensating units, point
It Wei not A-B phase compensating unit, B-C phase compensating unit and C-A phase compensating unit；Each single-phase compensating unit includes three and compensates back
Road, each compensation circuit is by fastp-acting fuse 2, anti-parallel thyristor 3, single-phase series reactor 4 and Monophase electric power capacitor 5
Be connected in series and constitute, wherein A-B phase compensating unit is connected between A phase and B phase, A phase power supply by fastp-acting fuse 2, it is anti-simultaneously
Connection thyristor 3, single-phase series reactor 4 and Monophase electric power capacitor 5 are connected with B phase power supply, the connection of B-C phase compensating unit
Between B phase and C phase, B phase power supply passes through fastp-acting fuse 2, anti-parallel thyristor 3, single-phase series reactor 4 and single-phase electricity
Power capacitor 5 is connected with C phase power supply, and C-A phase compensating unit is connected between C phase and A phase, and C phase power supply passes through quick fuse
Device 2, anti-parallel thyristor 3, single-phase series reactor 4 and Monophase electric power capacitor 5 are connected with A phase power supply.
The utility model automatically tracks the power consumption parameter and change of each phase load in detection electricity system by intelligent controller 6
Change, collected voltage/current signals, is handled by the CPU that coupling technique and A/D switch technology are sent into intelligent controller 6
Device, CPU processor by Fast Fourier Transform (FFT) (FFT) analysis, operation, accurately calculate each phase of A/B/C power factor and
The reactive power of required compensation, and based on power factor controlling avoids throw in-of oscillation with Reactive Power Control, then with each phase
After the feeder number of compensating unit and the compensation capacity of control are compared operation, generate corresponding compensation policy sending switching and refer to
It enables, using single-phase independent control technology, the anti-parallel thyristor 3 triggered in single-phase compensating unit is connected, and disposably puts into each phase
Required compensation capacity.
When power load three-phase equilibrium, each mutually feeder number of the compensating unit of investment and compensation capacity are identical, that is, realize
Three-phase equilibrium compensation；When power load three-phase imbalance, each mutually feeder number of the compensating unit of investment and compensation capacity are not
Identical or only certain phase compensating unit work, that is, realize three-phase imbalance compensation.This compensation work mode either work
Make, without neutral point current, it is inclined not will cause neutral point potential in three-phase equilibrium compensation way or three-phase imbalance compensation way
It moves, the phenomenon that neutral line current is excessive, transformer neutral conductor overheat is burnt, between the list being connected to three-phase electrical power system neutral voltage
Phase electrical equipment, compensation way and effect are the most reasonable.
Anti-parallel thyristor 3 uses zero cross fired technology, can continuous frequent switching, when capacitor switching, which will not generate, gushes
Stream, eliminates transient process.The trigger circuit of anti-parallel thyristor 3 is connected with temperature control system, and temperature protection system can be
When operation overheating fault occurs in device, work is automatically exited from, device is avoided and continues to run the danger that accident occurs.With the anti-of phase
Parallel thyristors 3 are mounted on same radiator fin, avoid phase fault, keep layout in cabinet more scientific, beautiful.
Single-phase series reactor 4 and Monophase electric power capacitor 5 in single-phase compensating unit are adjusted by parameter, can be effective
Inhibition harmonic wave series parallel resonance, enable devices to safe and reliable work containing harmonic background.
Claims (1)
1. a kind of single-phase reactive power compensator, it is characterized in that: including breaker of plastic casing (1), fastp-acting fuse (2), inverse parallel crystalline substance
Brake tube (3), single-phase series reactor (4), Monophase electric power capacitor (5) and intelligent controller (6),
The breaker of plastic casing (1) is respectively connected with A phase, B phase and C phase three phase mains, the leading-out terminal of breaker of plastic casing (1)
Connect three single-phase compensating units, respectively A-B phase compensating unit, B-C phase compensating unit and C-A phase compensating unit；The list
Phase compensating unit includes three compensation circuits；The compensation circuit is by fastp-acting fuse (2), anti-parallel thyristor (3), single-phase string
Join reactor (4) and Monophase electric power capacitor (5) is connected in series；The intelligent controller (6) respectively with A-B phase compensating unit,
B-C phase compensating unit and the connection of C-A phase compensating unit；
The A-B phase compensating unit is connected between A phase and B phase, and A phase power supply passes through fastp-acting fuse (2), anti-parallel thyristor
(3), single-phase series reactor (4) and Monophase electric power capacitor (5) are connect with B phase power supply；
The B-C phase compensating unit is connected between B phase and C phase, and B phase power supply passes through fastp-acting fuse (2), anti-parallel thyristor
(3), single-phase series reactor (4) and Monophase electric power capacitor (5) are connect with C phase power supply；
The C-A phase compensating unit is connected between C phase and A phase, and C phase power supply passes through fastp-acting fuse (2), anti-parallel thyristor
(3), single-phase series reactor (4) and Monophase electric power capacitor (5) are connect with A phase power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821222064.6U CN208571614U (en) | 2018-07-31 | 2018-07-31 | A kind of single-phase reactive power compensator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821222064.6U CN208571614U (en) | 2018-07-31 | 2018-07-31 | A kind of single-phase reactive power compensator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208571614U true CN208571614U (en) | 2019-03-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821222064.6U Active CN208571614U (en) | 2018-07-31 | 2018-07-31 | A kind of single-phase reactive power compensator |
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| Country | Link |
|---|---|
| CN (1) | CN208571614U (en) |
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2018
- 2018-07-31 CN CN201821222064.6U patent/CN208571614U/en active Active
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