CN106936135A - A kind of harmonics and reactive compensation apparatus and system - Google Patents
A kind of harmonics and reactive compensation apparatus and system Download PDFInfo
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- CN106936135A CN106936135A CN201710266911.2A CN201710266911A CN106936135A CN 106936135 A CN106936135 A CN 106936135A CN 201710266911 A CN201710266911 A CN 201710266911A CN 106936135 A CN106936135 A CN 106936135A
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- reactive compensation
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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
- H02J3/01—Arrangements for reducing harmonics or ripples
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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
- H02J3/18—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
- H02J3/1835—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators with stepless control
- H02J3/1842—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators with stepless control wherein at least one reactive element is actively controlled by a bridge converter, e.g. active filters
- H02J3/1857—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators with stepless control wherein at least one reactive element is actively controlled by a bridge converter, e.g. active filters wherein such bridge converter is a multilevel converter
-
- 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
-
- 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
- Y02E40/40—Arrangements for reducing harmonics
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Electrical Variables (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention provides a kind of harmonics and reactive compensation apparatus and system, device includes current operator module, and the current instantaneous value for obtaining load calculates harmonics and reactive compensation current information, and generate compensating current control signal according to current instantaneous value；Current tracking control module, for receiving compensating current control signal, and is processed compensating current control signal, and the first drive signal and the second drive signal are generated respectively；Compensation electric current generation module, including the first current transformer and the second current transformer in parallel, first current transformer and the second current transformer are respectively used to receive the first drive signal and the second drive signal, and the first drive signal and the second drive signal are processed respectively, generation compensation electric current；Compensation electric current is used for the harmonic wave of the load and idle compensates；The apparatus structure is simple, and highly reliable, intermodule coupling is strong.
Description
Technical field
The present invention relates to the harmonics and reactive compensation technical field loaded in network system, more particularly to a kind of harmonic wave and nothing
Reactive power compensation installations and system.
Background technology
If lacking reactive power in power system, the normal startup for loading can produce influence.In power system
A large amount of loads, such as asynchronous motor, electric induction furnace, Large Copacity rectifying installation and electric locomotive all shows as in operation
Perception which increases the energy loss in supply line, it is necessary to consume substantial amounts of reactive power, reduces quality of voltage, together
When reactive current also reduce hair, defeated, power supply unit effective rate of utilization, for power consumer, low power factor can increase
Plus electric cost expenditure, increase transformer loss, increase production cost.For load, because load capacity is big, if without big
Type reactive power source is supported, and easily causes low voltage even collapse of voltage.
Additionally, the harmonic wave that non-linear element is produced in load, influences load normal work, acceleration equipment is aging, and shortening sets
Standby service life, interference is produced to miscellaneous equipment around.
The content of the invention
It is an object of the invention to be directed in above-mentioned power system of the prior art lack reactive power, harmonic effects bear
Carry the problem of normal work, it is proposed that a kind of harmonics and reactive compensation apparatus and system.
On the one hand, the present invention provides a kind of harmonics and reactive compensation device, including:
Current operator module, the current instantaneous value for obtaining load, harmonic wave and nothing are calculated according to the current instantaneous value
Work(compensates current information, and generates compensating current control signal；
Current tracking control module, for receiving the compensating current control signal, and believes the compensating current control
Number processed, the first drive signal and the second drive signal are generated respectively；
Compensation electric current generation module, including in parallel the first current transformer and the second current transformer, first current transformer and the
Two current transformers are respectively used to receive first drive signal and the second drive signal, respectively to first drive signal and the
Two driving signal is processed, generation compensation electric current, and the compensation electric current is used for the harmonic wave of the load and idle mends
Repay.
Further, the current operator module includes random access memory, the first digital signal processor and second
Digital signal processor, first digital signal processor and the second digital signal processor are entered by random access memory
Row data interaction.
Further, first digital signal processor is TMS320C32 chips；Second digital signal processor
It is TMS320F240 chips.
Further, the current tracking control module includes signal receiving circuit, triangular-wave generator, first comparator
And second comparator, the signal receiving circuit is used to receive the compensating current control signal, the triangular-wave generator
For providing triangular wave, the compensating current control signal is generated respectively after being processed through the first comparator and the second comparator
First drive signal and the second drive signal.
Further, the compensation device also includes being connected to the current tracking control module and compensation electric current life
Into the drive module between module, the working condition for controlling first current transformer and the second current transformer.
Further, the drive module includes power module, main drive circuit and protection module, the power module
For being that the main drive circuit and the protection module are powered, the protection module is used to obtain the first current transformer and the second change
The running parameter of device is flowed, the main drive circuit is used for the first current transformer and the second unsteady flow according to the operating parameter control
The working condition of device.
Further, first current transformer and the second current transformer are three phase full bridge voltage PWM converter.
Further, described device also includes relay module, for the load and harmonics and reactive compensation dress
Putting carries out relay protection.
Further, described device also includes display module, the work for showing the harmonics and reactive compensation device
State.
On the other hand, the present invention also provides a kind of harmonics and reactive compensation system, including above-mentioned harmonics and reactive compensation
Device, also including electric power system and load, the electric power system and the load are by power network connection, the harmonic wave and idle benefit
Repay device and be arranged at load end.
A kind of harmonics and reactive compensation apparatus and system that the present invention is provided, at least including following beneficial effect：
(1) simple structure, highly reliable, intermodule coupling is strong, and compensation electric current generation module uses two current transformers, carries
The power output of the device high, improves system equivalent switching frequency, and then improve compensation effect, and power device is opened
Closing efficiency can effectively be reduced；
(2) current operator module uses two digital signal processors, and operational capability is strong, low cost, easy to use, calculates
Accuracy is high；
(3) setting of drive module, can be according to its work of the operating parameter control of the first current transformer and the second current transformer
State, when occur excessively stream or too high temperature when can turn off the first current transformer and the second current transformer, prevent the first current transformer and
Second current transformer is damaged, and effectively improves the reliability and security of the harmonics and reactive compensation device；
(4) setting of relay module, further increases the safety and reliability of device, meets wanting for safety in production
Ask；
(5) setting of display module, can user get more information about the working condition of the harmonics and reactive compensation device,
The convenience that raising is used.
Brief description of the drawings
A kind of structural representation of embodiment of harmonics and reactive compensation device that Fig. 1 is provided for the present invention.
A kind of structural representation of embodiment of current operator module in the harmonics and reactive compensation device that Fig. 2 is provided for the present invention
Figure.
A kind of structural representation of embodiment of current following module in the harmonics and reactive compensation device that Fig. 3 is provided for the present invention
Figure.
The structural representation of the harmonics and reactive compensation device another kind embodiment that Fig. 4 is provided for the present invention.
A kind of structural representation of embodiment of drive module in the harmonics and reactive compensation device that Fig. 5 is provided for the present invention.
A kind of circuit of embodiment of electric current generation module is compensated in the harmonics and reactive compensation device that Fig. 6 is provided for the present invention
Figure.
A kind of structural representation of embodiment of relay module in the harmonics and reactive compensation device that Fig. 7 is provided for the present invention.
A kind of structural representation of embodiment of harmonics and reactive compensation system that Fig. 8 is provided for the present invention.
Specific embodiment
The present invention provides a kind of harmonics and reactive compensation apparatus and system, to make the purpose of the present invention, technical scheme and effect
Fruit is clearer, clear and definite, and the present invention is described in more detail for the embodiment that develops simultaneously referring to the drawings.It should be appreciated that this place
The specific embodiment of description is only used to explain the present invention, is not intended to limit the present invention.
With reference to Fig. 1, the present embodiment provides a kind of harmonics and reactive compensation device, including:
Current operator module 101, for obtain load current instantaneous value, according to the current instantaneous value calculate harmonic wave and
Reactive-load compensation current information, and generate compensating current control signal；
Current tracking control module 102, for receiving the compensating current control signal, and to the compensating current control
Signal is processed, and the first drive signal and the second drive signal are generated respectively；
Compensation electric current generation module 103, including the first current transformer and the second current transformer in parallel, first current transformer and
Second current transformer is respectively used to receive first drive signal and the second drive signal, respectively to first drive signal and
Second drive signal is processed, generation compensation electric current, and the compensation electric current is used for the harmonic wave of the load and idle carries out
Compensation.
Specifically, current operator module 101 obtain load current instantaneous value, according to the current instantaneous value calculate harmonic wave and
The information of reactive-load compensation electric current, and compensating current control signal is generated, the compensating current control signal is humorous comprising needs compensation
Ripple and reactive-load compensation current information；Current tracking control module 102 receives the compensating current control signal, and to the compensation electric current
Control signal is changed accordingly, enhanced processing, and the first drive signal and the second drive signal are generated respectively；Compensation electric current life
The first drive signal and the second drive signal are received into module 103, and by the first current transformer and the second current transformer pair in parallel
First drive signal and the second drive signal are processed, and generation compensation electric current, the compensation electric current needs the humorous of compensation with load
Ripple and reactive current is equal in magnitude and opposite in phase, can cancel out each other, so as to complete harmonic wave to loading and reactive power
Compensation.
The harmonics and reactive compensation device that the present embodiment is provided, calculating acquisition is carried out by the current instantaneous value for obtaining load
Compensation electric current, to the harmonic wave that loads and it is idle compensate, simple structure is highly reliable, and intermodule coupling is strong, compensates electric current
Generation module uses two current transformers, improves the power output of the device, improves system equivalent switching frequency, and then improve
Compensation effect, and the switch efficiency of power device can be reduced effectively.
As one kind preferred embodiment, with reference to Fig. 2, in the harmonics and reactive compensation device that the present embodiment is provided, electricity
Stream computing module 101 includes the numeral of the 1011, first digital signal processor of random access memory (dual port RAM) 1012 and second
Signal processor 1013, the first digital signal processor 1012 and the second digital signal processor 1013 pass through random access memory
Device 1011 carries out data interaction.
As one kind preferred embodiment, the first digital signal processor 1012 is TMS320C32 chips；Second numeral
Signal processor 1013 is TMS320F240 chips.
Wherein TMS320C32 chips (32 floating types), for Floating-point Computation and data processing；TMS320F240 chips,
For data acquisition and substantial amounts of logical operation and control.Both are carried out by the random access memory of a piece of 16k × 16bit
Number is exchanged.TMS320C32 chips operational capability is strong, but resource and I/O interfaces are less in piece, and logic processing capability is weak, and
TMS320F240 chip contrasts, aboundresources in piece, low cost, I/O is easy to use, but verification essence in its 16 fixed point
Degree and speed have certain limitations, therefore both combinations can give full play to the advantage of both chips.
The calculating of the current component such as harmonic wave and reactive power uses the computational methods of the harmonic current based on Fourier transform,
The method can only make the Fourier transform of corresponding number of times according to the requirement compensated to specific subharmonic of user, so that
Simplify and calculate.According to the difference of sine and cosine initial phase, can obtain fundamental wave reactive power and fundamental active component, such as sampling be with it is defeated
Enter sinusoidal signal synchronization, then the inverse fourier transform of fundamental wave cosine then corresponds to reactive-load compensation electric current.To be carried out to harmonic wave
Full compensation, available current signal subtracts fundametal compoment and obtains harmonic current compensation instruction；To compensation harmonic and idle, can be with negative
Load current signal subtracts fundamental active component and is compensated current-order.
The core of current operator module 101 is to detect the harmonic component in load current, and Harmonic currents detection will be direct
Have influence on the compensation performance of device.The common detection methods of harmonic current have-are based on the p-q algorithms of instantaneous reactive power theory
With DFT/FFT algorithms.P-q algorithms based on instantaneous reactive power theory are a kind of indirect detection algorithms, and the algorithm is because by three
Mutually unification is accounted for, therefore with dynamic responding speed faster, having the disadvantage cannot between its response speed and accuracy of detection
Take into account, coordinate transform is computationally intensive, it is impossible to specifying subharmonic to detect.DFT/FFT algorithms (DFT and fast
Fast Fourier transform) there is accuracy of detection very high and fundamental wave and specified subharmonic can be detected, but the algorithm
The time delay of primitive period can be caused, and cannot be distinguished by that fundamental positive sequence is active, fundamental positive sequence is idle, fundamental wave using the algorithm
Negative phase-sequence, is in this way applied to and slowly varying load is compensated.
The detection algorithm of current operator module 101 in the present embodiment is on the basis of DFT algorithms by introducing DC side electric current
Predictive factor is realized.First use traditional electric current detecting method, using the sampled data in last cycle calculate fundamental wave or
It is to specify subharmonic, then compares the value of DC side electric current current sampling point and the value of the last cycle sampled point, it is possible to draws
The change multiple of electric current, completes the dynamic detection of current fundamental wave or specified subharmonic.The algorithm has DFT and p-q algorithms
Flexibility, but overcome DFT need a time delay shortcoming for power frequency period, while again have explicit physical meaning the characteristics of,
Using the algorithm can be easily and fast detect fundamental wave, fundamental wave reactive power, fundamental active, fundamental positive sequence, fundamental wave negative sequence, fundamental wave
Positive sequence is active and each harmonic, and the algorithm is realized simple, it is easy to program, and Detection results are very well, are harmonics and reactive compensation
Device meets different compensation purposes there is provided Reliable guarantee.After using new harmonic electric current DFT algorithms, make system detectio harmonic wave
The rapidity of electric current, accuracy are greatly improved, and existing algorithm can make the dynamic response time of Active Power Filter-APF be less than 1ms.
As one kind preferred embodiment, with reference to Fig. 3, in the harmonics and reactive compensation device that the present embodiment is provided,
Current tracking control module 102 includes signal receiving circuit 1021, triangular-wave generator 1022, first comparator 1023 and the
Two comparators 1024, signal receiving circuit 1021 is used to receive compensating current control signal, and triangular-wave generator is used to load three
Angle ripple, compensating current control signal generates the first driving respectively after being processed through 1023 and second comparator of first comparator 1024 believes
Number and the second drive signal.
First drive signal and the second drive signal are pwm signal.
As one kind preferred embodiment, with reference to Fig. 4, the harmonics and reactive compensation device that the present embodiment is provided also includes
The drive module 104 between current tracking control module 102 and compensation electric current generation module 103 is connected to, for controlling first
The working condition of current transformer and the second current transformer.
As one kind preferred embodiment, with reference to Fig. 5, drive module includes power module 1041, main drive circuit
1042 and protection module 1043, power module 1041 is used to be that main drive circuit 1042 and protection module 1043 are powered, and protects
Module 1043 is used to obtain the running parameter of the first current transformer and the second current transformer, and main drive circuit 1042 is used to be joined according to work
The working condition of the current transformer of numerical control system first and the second current transformer.
The running parameter of the first current transformer and the second current transformer includes but is not limited to operating temperature, operating current etc., works as phase
The running parameter of pass exceedes predetermined threshold value, then main drive circuit 1042 controls the first current transformer and the shut-off of the second current transformer, stops
Work.
The setting of drive module 104, can be according to its work of the operating parameter control of the first current transformer and the second current transformer
State, when occur excessively stream or too high temperature when can turn off the first current transformer and the second current transformer, prevent the first current transformer and
Second current transformer is damaged, and effectively improves the reliability and security of the harmonics and reactive compensation device.
With reference to the circuit of the compensation electric current generation module 103 in the harmonics and reactive compensation device that Fig. 6, the present embodiment are provided
Figure, including the first current transformer, the second current transformer, and peripheral circuit, wherein the first current transformer and the second current transformer are three-phase
Full-bridge voltage type PWM converter.Peripheral circuit include breaker KM1 and KM2, switch QA1, resistance R1, R2, R3, R4, R5, R6,
R7, R8, R9, R10, electric capacity C1C2, C3C4, C5C6, C7, C8, C9, C1 ' C2 ', C3 ' C4 ', C5 ' C6 ', C7 ', C8 ', C9 ', electricity
Sense L1, L2, L3, L1 ', L2 ', L3 ', spool SC1, SC2, SC3, SC4, SC5, SC6, lightning protection component F1, F2, F3, F4 etc..
First current transformer and the public one group of DC filter capacitor bus of the second current transformer, it is directly in parallel by reactor
Together, using doubleization method, the first current transformer and the second current transformer track same compensating current control signal, and respectively
Using itself different carried-based PWM PWM drive signals, i.e. the first drive signal and the second drive signal, two paths of signals exists
180 degree (i.e. phase-shifting carrier wave control) is differed in phase, carrying for whole power output is on the one hand so realized by double convertor
Height, meanwhile, system equivalent switching frequency is improve, and then compensation effect is improve, and cause the switch of power device IGBT
Frequency is greatly lowered.
As one kind preferred embodiment, with reference to Fig. 4, the harmonics and reactive compensation device that the present embodiment is provided also includes
Relay module 105, for carrying out relay protection to load harmonic and reactive power compensator.
With reference to Fig. 7, relay module 105 includes power supply module 1051 and relay control module 1052, wherein power supply module
1051 are used to be module for power supply, including enter line transformer, alternating current filter, Switching Power Supply, power panel, lightning protection component and periphery electricity
Road etc., enters line transformer for 400V/220V, for line voltage step-down to be used, prevent Switching Power Supply under hyperbaric environment not
Can normally use, be additionally operable to be isolated with power network in addition.Alternating current filter is used to be filtered primary voltage, it is ensured that switch
The steady operation of power supply, lightning protection component is used to prevent thunderbolt, increases the security of device.Relay control module 1052 is used for when hair
During raw failure, the connection of cut-out harmonics and reactive compensation device and power network, and transmit fault-signal.
The setting of relay module 105, further increases the safety and reliability of device, meets wanting for safety in production
Ask.
With reference to Fig. 4, the harmonics and reactive compensation device that the present embodiment is provided also includes display module 106, for showing
State the working condition of harmonics and reactive compensation device.
Specifically, display module uses liquid crystal display control panel, can show power network three-phase voltage, wave filter output three-phase
Electric current (RMS), output current wave；By panel operation, harmonic compensation number of times can be set；Can to equipment operation and malfunction
Real-time monitoring is recorded.
The setting of display module, can user get more information about the working condition of the harmonics and reactive compensation device, carry
The convenience that height is used.
With reference to Fig. 8, the present embodiment provides a kind of harmonics and reactive compensation system, including harmonics and reactive compensation device 201,
Also include electric power system 202 and load 203, electric power system 202 and load 203 are connected by power network, harmonics and reactive compensation dress
Put 202 and be arranged at load end.
To sum up, the harmonics and reactive compensation apparatus and system that the present invention is provided, at least including following beneficial effect：
(1) simple structure, highly reliable, intermodule coupling is strong, and compensation electric current generation module uses two current transformers, carries
The power output of the device high, improves system equivalent switching frequency, and then improve compensation effect, and power device is opened
Closing efficiency can effectively be reduced；
(2) current operator module uses two digital signal processors, and operational capability is strong, low cost, easy to use, calculates
Accuracy is high；
(3) setting of drive module, can be according to its work of the operating parameter control of the first current transformer and the second current transformer
State, when occur excessively stream or too high temperature when can turn off the first current transformer and the second current transformer, prevent the first current transformer and
Second current transformer is damaged, and effectively improves the reliability and security of the harmonics and reactive compensation device；
(4) setting of relay module, further increases the safety and reliability of device, meets wanting for safety in production
Ask；
(5) setting of display module, can user get more information about the working condition of the harmonics and reactive compensation device,
The convenience that raising is used.
It should be appreciated that for those of ordinary skills, can according to the above description be improved or converted,
And all these modifications and variations should all belong to the protection domain of appended claims of the present invention.
Claims (10)
1. a kind of harmonics and reactive compensation device, it is characterised in that including:
Current operator module, the current instantaneous value for obtaining load, harmonic wave and idle benefit are calculated according to the current instantaneous value
Current information is repaid, and generates compensating current control signal；
Current tracking control module, for receiving the compensating current control signal, and enters to the compensating current control signal
Row treatment, generates the first drive signal and the second drive signal respectively；
Compensation electric current generation module, including the first current transformer and the second current transformer in parallel, first current transformer and second become
Stream device is respectively used to receive first drive signal and the second drive signal, and first drive signal and second are driven respectively
Dynamic signal is processed, generation compensation electric current, and the compensation electric current is used for the harmonic wave of the load and idle compensates.
2. harmonics and reactive compensation device according to claim 1, it is characterised in that the current operator module include with
Machine access memory, the first digital signal processor and the second digital signal processor, first digital signal processor and
Second digital signal processor carries out data interaction by random access memory.
3. harmonics and reactive compensation device according to claim 2, it is characterised in that first digital signal processor
It is TMS320C32 chips；Second digital signal processor is TMS320F240 chips.
4. harmonics and reactive compensation device according to claim 1, it is characterised in that the current tracking control module bag
Signal receiving circuit, triangular-wave generator, first comparator and the second comparator are included, the signal receiving circuit is used to receive
The compensating current control signal, the triangular-wave generator is used to provide triangular wave, and the compensating current control signal is through institute
The first drive signal and the second drive signal are generated respectively after stating first comparator and the treatment of the second comparator.
5. harmonics and reactive compensation device according to claim 1, it is characterised in that the compensation device also includes connection
Drive module between the current tracking control module and the compensation electric current generation module, for controlling described first to become
The working condition of stream device and the second current transformer.
6. harmonics and reactive compensation device according to claim 5, it is characterised in that the drive module includes power supply mould
Block, main drive circuit and protection module, the power module are used to be powered for the drive circuit and the protection module, institute
State protection module is used for according to for obtaining the running parameter of the first current transformer and the second current transformer, the main drive circuit
The working condition of the first current transformer and the second current transformer described in operating parameter control.
7. harmonics and reactive compensation device according to claim 1, it is characterised in that first current transformer and second becomes
Stream device is three phase full bridge voltage PWM converter.
8. harmonics and reactive compensation device according to claim 1, it is characterised in that described device also includes relay mould
Block, for carrying out relay protection to the load and the harmonics and reactive compensation device.
9. harmonics and reactive compensation device according to claim 1, it is characterised in that described device also includes display mould
Block, the working condition for showing the harmonics and reactive compensation device.
10. a kind of harmonics and reactive compensation system, it is characterised in that including harmonic wave and nothing as described in claim 1-9 is any
Reactive power compensation installations, also including electric power system and load, the electric power system and the load are connected by power network, the harmonic wave and
Reactive power compensator is arranged at load end.
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| CN201710266911.2A CN106936135A (en) | 2017-04-21 | 2017-04-21 | A kind of harmonics and reactive compensation apparatus and system |
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| CN201710266911.2A CN106936135A (en) | 2017-04-21 | 2017-04-21 | A kind of harmonics and reactive compensation apparatus and system |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103532155A (en) * | 2013-10-29 | 2014-01-22 | 山东华天电气有限公司 | Centrally-controlled multi-module static synchronous compensator and control method thereof |
| CN203553951U (en) * | 2013-10-28 | 2014-04-16 | 辽阳鸿飞电器制造(集团)有限公司 | Static reactive compensation generator based on current sine |
| CN103997040A (en) * | 2014-05-09 | 2014-08-20 | 安徽振兴科技股份有限公司 | Method for improving harmonic wave treatment and reactive compensation effects of active power filter |
| CN104135004A (en) * | 2014-08-12 | 2014-11-05 | 四川威德能源科技有限公司 | Active harmonic management device |
| CN105244881A (en) * | 2015-10-23 | 2016-01-13 | 北京星航机电装备有限公司 | Active power filter compensation policy and device |
-
2017
- 2017-04-21 CN CN201710266911.2A patent/CN106936135A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203553951U (en) * | 2013-10-28 | 2014-04-16 | 辽阳鸿飞电器制造(集团)有限公司 | Static reactive compensation generator based on current sine |
| CN103532155A (en) * | 2013-10-29 | 2014-01-22 | 山东华天电气有限公司 | Centrally-controlled multi-module static synchronous compensator and control method thereof |
| CN103997040A (en) * | 2014-05-09 | 2014-08-20 | 安徽振兴科技股份有限公司 | Method for improving harmonic wave treatment and reactive compensation effects of active power filter |
| CN104135004A (en) * | 2014-08-12 | 2014-11-05 | 四川威德能源科技有限公司 | Active harmonic management device |
| CN105244881A (en) * | 2015-10-23 | 2016-01-13 | 北京星航机电装备有限公司 | Active power filter compensation policy and device |
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