CN109274111A - A kind of three-phase imbalance automatic regulating system - Google Patents
A kind of three-phase imbalance automatic regulating system Download PDFInfo
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- CN109274111A CN109274111A CN201811443955.9A CN201811443955A CN109274111A CN 109274111 A CN109274111 A CN 109274111A CN 201811443955 A CN201811443955 A CN 201811443955A CN 109274111 A CN109274111 A CN 109274111A
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Classifications
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- 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
- H02J3/26—Arrangements for eliminating or reducing asymmetry in polyphase networks
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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
The present invention provides a kind of three-phase imbalance automatic regulating system, it include: to set the sequentially connected power supply of source side, core control panel module and the first wireless communication module, the sequentially connected load of user side, sample circuit module, second wireless communication module and reversing switch module, the three-phase current signal of user's lateral load is acquired by sample circuit module, three-phase current signal is transmitted to core control panel module through the wireless communication of the second wireless communication module and the first wireless communication module, core control panel module analysis simultaneously handles three-phase current signal generation reversing switch control command, reversing switch control command is transmitted to reversing switch module through the first wireless communication module and the second wireless communication module again, so that reversing switch module carries out commutation operation.Three-phase imbalance automatic regulating system of the invention distributed can automatically adjust three alternate burden with power equilibrium assignments, avoid larger the shoving in the generation of load switching moment, and charge and carry out commutation operation.
Description
Technical field
The invention belongs to power grid three-phase imbalance technical field more particularly to a kind of active three-phase imbalance automatic adjustment systems
System.
Background technique
Three-phase imbalance problem is suggested already as one of power quality problem, but specific three-phase imbalance is to electricity
The harm of Force system bring has much, great loss can be brought to system, the research of this respect is still short of, and with electricity
The development and application of the new and high technologies such as power electronics and communication, the reason of making electric power networks three-phase imbalance, more develop to complicating.
Fast-developing three-phase imbalance compensation method and device are mainly power electronics type and phase-change switch type three-phase imbalance at present
Controlling device.
Wherein, power electronics formula three-phase imbalance controlling device, with IGBT (insulated gate bipolar transistor) switch for core
The reactive power compensation unit of the heart realizes a kind of totally digitilized electric power of transformation of electrical energy using advanced PWM pulse modulation technology
Electronic device.Three-phase four-wire system is generally used, quickly and effectively dynamic passive compensation can be carried out for fluctuating load, to voltage
Fluctuation is compensated with flickering, load unbalanced, power factor, harmonic wave, is being effectively improved power quality.But there are itself to damage for it
The drawbacks such as consumption height, noise and harmonic pollution.
Summary of the invention
The purpose of the present invention is to provide a kind of three-phase imbalance automatic regulating systems, being capable of distributed automatic adjustment three-phase
Between burden with power equilibrium assignment, avoid load switching moment generate it is larger shoving, avoid the long-term running loss of thyristor,
And it charges and carries out commutation operation.
In order to solve the above technical problems, the present invention provides a kind of three-phase imbalance automatic regulating systems, comprising: be set to
The sequentially connected power supply in electric power system power source side, core control panel module and the first wireless communication module, are set to power train
The sequentially connected load of user side of uniting, sample circuit module, the second wireless communication module and reversing switch module, the sampling
Circuit module acquires the three-phase current signal of load described in user side, and is sent to described the through second wireless communication module
One wireless communication module, the core control panel module receive the three-phase current letter of the first wireless communication module transmission
Number, and reversing switch control command is calculated, first wireless communication module send the reversing switch control command to
Second wireless communication module, the reversing switch module receive the reversing switch control command and carry out commutation operation with
Realize that the three-phase imbalance of load described in user side is adjusted.
According to embodiment of the present invention, the sample circuit module includes current transformer, described for acquiring
The three-phase current signal of load.
According to another implementation of the invention, the core control panel module is also used to be believed according to the three-phase current
The tri-phase unbalance factor of load described in user side number is calculated, it is described if the tri-phase unbalance factor is more than preset threshold
Reversing switch control command is calculated in core control panel module.
According to another implementation of the invention, the reversing switch module includes multiple reversing switches, the commutation
Switch control order includes the switch-mode regulation target phase value of corresponding multiple reversing switches.
According to another implementation of the invention, the three-phase imbalance automatic regulating system further includes being set to power supply
The IGBT on-off circuit module and drive circuit module of side, the IGBT on-off circuit module are connect with the power supply, and through institute
Drive circuit module is stated to connect with the core control panel module.
According to another implementation of the invention, when the tri-phase unbalance factor is adjusted within preset threshold, institute
Core control panel module is stated to be also used to calculate the power factor of the power supply and judge the power supply according to the power factor
Reactive power characteristic；
If the reactive power characteristic is inductive reactive power, the core control panel module is by controlling the drive circuit module
The IGBT on-off circuit module is driven to carry out capacitive current compensation to the power supply；
If the reactive power characteristic is capacitive reactive power, the core control panel module is by controlling the drive circuit module
The IGBT on-off circuit module is driven to carry out inductance current compensation to the power supply.
According to another implementation of the invention, the core control panel module is also used to be believed according to the three-phase current
The value for number calculating each harmonic component, drives the IGBT on-off circuit module to described by controlling the drive circuit module
Power supply carries out harmonic component current compensation.
According to another implementation of the invention, the three-phase imbalance automatic regulating system further includes interactive interface mould
Block, for carrying out data interaction and display with the core control panel module.
According to another implementation of the invention, the core control panel module includes that DSP processing unit and FPGA are patrolled
Processing unit is collected, the DSP processing unit is used to carry out the three-phase current signal calculation processing and generates control signal, described
Fpga logic processing unit is for carrying out logical operation process.
According to another implementation of the invention, first wireless communication module and the second wireless communication module are also used
In the data of transmission are encrypted and/or are decrypted.
Beneficial effects of the present invention:
The three-phase imbalance automatic regulating system of the embodiment of the present invention includes: to be set to the sequentially connected electricity in electric power system power source side
Source, core control panel module and the first wireless communication module are set to the sequentially connected load in power system customer side, sampling
Circuit module, the second wireless communication module and reversing switch module are acquired by sample circuit module and are loaded described in user side
Three-phase current signal, through the wireless communication of the second wireless communication module and the first wireless communication module transmit three-phase current signal
To core control panel module, core control panel module analysis simultaneously handles three-phase current signal generation reversing switch control command, then
It is secondary to transmit reversing switch control command to reversing switch module through the first wireless communication module and the second wireless communication module, so that
Reversing switch module is carried out commutation operation and is adjusted with the three-phase imbalance for realizing load described in user side.The three of the embodiment of the present invention
Mutually uneven automatic regulating system distributed can automatically adjust three alternate burden with power equilibrium assignments, avoid in load switching wink
Between generate it is larger shove, avoid the long-term running loss of thyristor, and charge carry out commutation operation.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, needed in being described below to the embodiment of the present invention
Attached drawing to be used is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention,
For those of ordinary skill in the art, without any creative labor, it can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is a kind of structural schematic diagram of one embodiment of three-phase imbalance automatic regulating system of the invention；
Fig. 2 is a kind of structural schematic diagram of another embodiment of three-phase imbalance automatic regulating system of the invention；
Fig. 3 is a kind of schematic diagram of one embodiment of three-phase imbalance automatic regulating system of the invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are some of the embodiments of the present invention, instead of all the embodiments.Based on this hair
Embodiment in bright, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, shall fall within the protection scope of the present invention.
As shown in Figure 1, the embodiment of the invention provides a kind of three-phase imbalance automatic regulating systems 100, comprising: be set to
The sequentially connected power supply 10 in electric power system power source side, core control panel module 20 and the first wireless communication module 30, are set to
The sequentially connected load 40 in power system customer side, sample circuit module 50, the second wireless communication module 60 and reversing switch
Module 70, the sample circuit module 50 acquire the three-phase current signal of load 40 described in user side, and wireless through described second
Communication module 60 is sent to first wireless communication module 30, and the core control panel module 20 receives first channel radio
Believe the three-phase current signal that module 30 transmits, and reversing switch control command is calculated, first radio communication mold
Block 30 sends the reversing switch control command to second wireless communication module 60, and the reversing switch module 70 receives institute
It states reversing switch control command and carries out commutation operation and adjusted with the three-phase imbalance for realizing load 40 described in user side.
The three-phase imbalance automatic regulating system of the embodiment of the present invention includes: to be set to electric power system power source side to be sequentially connected
Power supply, core control panel module and the first wireless communication module, be set to power system customer side it is sequentially connected load,
Sample circuit module, the second wireless communication module and reversing switch module are acquired described in user side by sample circuit module
The three-phase current signal of load transmits three-phase current through the wireless communication of the second wireless communication module and the first wireless communication module
To core control panel module, core control panel module analysis simultaneously handles three-phase current signal and generates reversing switch control life signal
It enables, transmits reversing switch control command to reversing switch mould through the first wireless communication module and the second wireless communication module again
Block, so that reversing switch module is carried out commutation operation and adjusted with the three-phase imbalance for realizing load described in user side.The present invention is real
The three-phase imbalance automatic regulating system for applying example distributed can automatically adjust three alternate burden with power equilibrium assignments, avoid negative
Larger the shoving of lotus switching moment generation, avoids the long-term running loss of thyristor, and charges and carry out commutation operation.
Optionally, the load and power supply of the three-phase imbalance automatic regulating system of the embodiment of the present invention all can be
AC single phase power supply or three-phase ac power supply.
As one for example, as shown in figure 3, the sample circuit module 50 of the embodiment of the present invention includes that electric current is mutual
Sensor 51, for acquiring the three-phase current signal of the load.
As another for example, the core control panel module 20 of the embodiment of the present invention is also used to according to described three
The tri-phase unbalance factor of load 40 described in user side is calculated in phase current signal, if the tri-phase unbalance factor is more than default
Reversing switch control command is calculated in threshold value, the core control panel module 20.
As another for example, as shown in figure 3, the reversing switch module 70 of the embodiment of the present invention includes multiple
Reversing switch 71, the reversing switch control command include the switch-mode regulation target phase of corresponding multiple reversing switches 71
Value.
As another for example, as shown in Fig. 2, the three-phase imbalance automatic regulating system of the embodiment of the present invention
100 further include the IGBT on-off circuit module 80 and drive circuit module 90 for being set to source side, the IGBT switching circuit mould
Block 80 is connect with the power supply 10, and is connect through the drive circuit module 90 with the core control panel module 20.
As another for example, as shown in Fig. 2, the embodiment of the present invention when the tri-phase unbalance factor be adjusted to it is default
When within threshold value, the core control panel module 20 be also used to calculate the power factor of the power supply 10 and according to the power because
Number judges the reactive power characteristic of the power supply 10；
If the reactive power characteristic is core control panel module 20 described in inductive reactive power by controlling the driving circuit mould
Block 90 drives the IGBT on-off circuit module 80 to carry out capacitive current compensation to the power supply 10；
If the reactive power characteristic is capacitive reactive power, the core control panel module 20 is by controlling the driving circuit mould
Block 90 drives the IGBT on-off circuit module 80 to carry out inductance current compensation to the power supply 10.
The three-phase imbalance automatic regulating system of the embodiment of the present invention is adjusted to preset threshold or less in tri-phase unbalance factor
Afterwards, core control panel module calculates power factor and judges reactive power characteristic, for example inductive reactive power, then compensates capacity current；
For example capacitive reactive power then compensates inductance current.After the completion of core control panel module calculates and judges to current value, pass through driving electricity
Road module drive IGBT on-off circuit module generates capacity current or inductance current and carries out reactive compensation to power supply, improve power because
Number.The three-phase imbalance automatic regulating system of the embodiment of the present invention can carry out quickly and effectively dynamic nothing for the fluctuation of load
Function compensation, improves the stability of electric system.
As another for example, as shown in Fig. 2, the core control panel module 20 of the embodiment of the present invention is also used to
The value that each harmonic component is calculated according to the three-phase current signal is driven described by the control drive circuit module 90
IGBT on-off circuit module 80 carries out harmonic component current compensation to the power supply.The three-phase imbalance of the embodiment of the present invention is automatic
For regulating system after reactive compensation reaches requirement, core control panel module calculates the value of each harmonic component, passes through driving circuit
Module drive IGBT on-off circuit module generates the current signal opposite with harmonic component and supply-injected side, humorous to eliminate each time
Wave component.The three-phase imbalance automatic regulating system of the embodiment of the present invention can compensate power factor, be effectively improved electricity
Energy quality, according to the practical harmonic content size at scene, fast automatic tracking compensation reaches and drops to own loss, reduce noise, subtract
Few harmonic pollution etc..
As another for example, as shown in Fig. 2, the three-phase imbalance automatic regulating system of the embodiment of the present invention
100 further include interactive interface module 91, for carrying out data interaction and display with the core control panel module 20.
Optionally, the core control panel module of the three-phase imbalance automatic regulating system of the embodiment of the present invention includes
RS232 interface, for being communicated with the interactive interface module.
As another for example, as shown in figure 3, the core control panel module 20 of the embodiment of the present invention includes
DSP processing unit 21 and fpga logic processing unit 22, the DSP processing unit 21 are used to carry out the three-phase current signal
Calculation processing generates control signal, and the fpga logic processing unit 22 is for carrying out logical operation process.The embodiment of the present invention
The core control panel module of three-phase imbalance automatic regulating system use DSP+FPGA structure, DSP processing unit is completed from adopting
Collector module obtains analog signal amount, and load module and storing data, and fpga logic circuit unit completes core board
Logic function and PWM function control IO and failure protection function.
As another for example, first wireless communication module 30 of the embodiment of the present invention and the second wireless communication
Module 60 is also used to that the data of transmission are encrypted and/or decrypted.First wireless communication module of the embodiment of the present invention and
Two wireless communication modules can carry out encryption and decryption, the safety of improve data transfer to the data of transmission.
The embodiment of the present invention is described with above attached drawing, but the invention is not limited to above-mentioned specific
Embodiment, the above mentioned embodiment is only schematical, rather than restrictive, those skilled in the art
Under the inspiration of the present invention, without breaking away from the scope protected by the purposes and claims of the present invention, it can also make very much
Form belongs within protection of the invention sets.
Claims (10)
1. a kind of three-phase imbalance automatic regulating system characterized by comprising be set to electric power system power source side and be sequentially connected
Power supply, core control panel module and the first wireless communication module, be set to power system customer side it is sequentially connected load,
Sample circuit module, the second wireless communication module and reversing switch module, the sample circuit module acquire described in user side
The three-phase current signal of load, and first wireless communication module, the core are sent to through second wireless communication module
Heart control plate module receives the three-phase current signal of the first wireless communication module transmission, and reversing switch is calculated
Control command, the first wireless communication module transmission reversing switch control command to second wireless communication module,
The reversing switch module receives the reversing switch control command and carries out commutation operation to realize load described in user side
Three-phase imbalance is adjusted.
2. three-phase imbalance automatic regulating system according to claim 1, which is characterized in that the sample circuit module packet
Current transformer is included, for acquiring the three-phase current signal of the load.
3. three-phase imbalance automatic regulating system according to claim 1, which is characterized in that the core control panel module
It is also used to be calculated the tri-phase unbalance factor of load described in user side according to the three-phase current signal, if the three-phase is not
The degree of balance is more than preset threshold, and reversing switch control command is calculated in the core control panel module.
4. three-phase imbalance automatic regulating system according to claim 3, which is characterized in that the reversing switch module packet
Multiple reversing switches are included, the reversing switch control command includes the switch-mode regulation target phase of corresponding multiple reversing switches
Value.
5. three-phase imbalance automatic regulating system according to claim 3, which is characterized in that the three-phase imbalance is automatic
Regulating system further includes being set to the IGBT on-off circuit module and drive circuit module of source side, the IGBT switching circuit mould
Block is connect with the power supply, and is connect through the drive circuit module with the core control panel module.
6. three-phase imbalance automatic regulating system according to claim 5, which is characterized in that when the tri-phase unbalance factor
When being adjusted within preset threshold, the core control panel module is also used to calculate the power factor of the power supply and according to described
Power factor judges the reactive power characteristic of the power supply；
If the reactive power characteristic is inductive reactive power, the core control panel module is by controlling the drive circuit module
The IGBT on-off circuit module is driven to carry out capacitive current compensation to the power supply；
If the reactive power characteristic is capacitive reactive power, the core control panel module is by controlling the drive circuit module
The IGBT on-off circuit module is driven to carry out inductance current compensation to the power supply.
7. three-phase imbalance automatic regulating system according to claim 6, which is characterized in that the core control panel module
It is also used to calculate the value of each harmonic component according to the three-phase current signal, drives institute by controlling the drive circuit module
It states IGBT on-off circuit module and harmonic component current compensation is carried out to the power supply.
8. -7 any three-phase imbalance automatic regulating system according to claim 1, which is characterized in that the three-phase is uneven
The automatic regulating system that weighs further includes interactive interface module, for carrying out data interaction and display with the core control panel module.
9. -7 any three-phase imbalance automatic regulating system according to claim 1, which is characterized in that the core control
Plate module includes DSP processing unit and fpga logic processing unit, and the DSP processing unit is used for the three-phase current signal
It carries out calculation processing and generates control signal, the fpga logic processing unit is for carrying out logical operation process.
10. -7 any three-phase imbalance automatic regulating system according to claim 1, which is characterized in that first nothing
Line communication module and the second wireless communication module are also used to that the data of transmission are encrypted and/or decrypted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811443955.9A CN109274111A (en) | 2018-11-29 | 2018-11-29 | A kind of three-phase imbalance automatic regulating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811443955.9A CN109274111A (en) | 2018-11-29 | 2018-11-29 | A kind of three-phase imbalance automatic regulating system |
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| Publication Number | Publication Date |
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| CN109274111A true CN109274111A (en) | 2019-01-25 |
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ID=65186376
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| CN201811443955.9A Withdrawn CN109274111A (en) | 2018-11-29 | 2018-11-29 | A kind of three-phase imbalance automatic regulating system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113659596A (en) * | 2021-08-31 | 2021-11-16 | 贵州电网有限责任公司 | Low-voltage phase modulation system |
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| CN201594745U (en) * | 2010-01-12 | 2010-09-29 | 成都盛翔航天科技开发有限责任公司 | Three-phase current balancer |
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| CN107086591A (en) * | 2017-04-25 | 2017-08-22 | 武汉大学 | A kind of three-phase imbalance adjuster based on reactive-load compensation and intelligent commutation |
| CN207218249U (en) * | 2017-05-10 | 2018-04-10 | 广西云涌科技有限公司 | A kind of intelligent balance pressure regulation harmonic elimination comprehensive treatment device |
| WO2018064929A1 (en) * | 2016-10-09 | 2018-04-12 | 国网江苏省电力公司扬州供电公司 | Three-phase load balancing control method and system |
| CN208955670U (en) * | 2018-11-29 | 2019-06-07 | 上海光维电力科技有限公司 | A kind of three-phase imbalance automatic regulating system |
-
2018
- 2018-11-29 CN CN201811443955.9A patent/CN109274111A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201594745U (en) * | 2010-01-12 | 2010-09-29 | 成都盛翔航天科技开发有限责任公司 | Three-phase current balancer |
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| CN107086591A (en) * | 2017-04-25 | 2017-08-22 | 武汉大学 | A kind of three-phase imbalance adjuster based on reactive-load compensation and intelligent commutation |
| CN207218249U (en) * | 2017-05-10 | 2018-04-10 | 广西云涌科技有限公司 | A kind of intelligent balance pressure regulation harmonic elimination comprehensive treatment device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113659596A (en) * | 2021-08-31 | 2021-11-16 | 贵州电网有限责任公司 | Low-voltage phase modulation system |
| CN113659596B (en) * | 2021-08-31 | 2024-04-23 | 贵州电网有限责任公司 | Low-voltage phase modulation system |
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