CN104300551B - Reactive power compensation device with passive filter function - Google Patents
Reactive power compensation device with passive filter function Download PDFInfo
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- CN104300551B CN104300551B CN201410535115.0A CN201410535115A CN104300551B CN 104300551 B CN104300551 B CN 104300551B CN 201410535115 A CN201410535115 A CN 201410535115A CN 104300551 B CN104300551 B CN 104300551B
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- Prior art keywords
- unit
- reactive power
- passive filtering
- reactive
- inductance
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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
- H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
- H02J3/1885—Arrangements for adjusting, eliminating or compensating reactive power in networks using rotating means, e.g. synchronous generators
-
- 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
-
- 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
Abstract
The invention discloses a reactive power compensation device with the passive filter function. The reactive power compensation device is used in a power grid bus and comprises a signal collecting device, a controller, a reactive power compensation unit and a passive filter unit. The signal collecting device is used for collecting signals and sending the signals to the controller. The reactive power compensation unit comprises a first inductance unit, a first movable unit and a first capacitance device. The first inductance unit comprises a first coil and a first iron core. The passive filter unit comprises a second inductance unit, a second movable unit and a second capacitance device. The second inductance unit comprises a second coil and a second iron core. The controller generates the reactive power compensation control amount and the passive filter control amount, and controls the first movable unit to adjust the length, in the first coil, of the first iron core, and the second movable unit to adjust the length, in the second coil, of the second iron core. The reactive power compensation device can carry out reactive power compensation and harmonic wave management at the same time, site installing space is reduced, and adjusting time is shortened.
Description
Technical field
The present invention relates to a kind of reactive power compensator with passive filtering function.
Background technology
Due to developing rapidly of Power Electronic Technique, electricity-saving lamp, computer, RHVC, rectifying installation and UPS are (no
Uninterruptible power) etc. the nonlinear power consumer of the opering characteristic of electric apparatus increasingly extensive, bring increasingly severe harmonic wave to disturb to electrical network, from
And affect the quality of power supply and decline.Inductive load substantial increase makes the power factor of user also increasingly decline, thus user side harmonic wave
Wave filter and reactive power compensator are more and more widely used.
As only carried out reactive-load compensation, because many power consumers have larger harmonic wave interference, reactive power compensator is just no
Method normal work：Electric current is exceeded, produce vibration and noise.Thus configure reactive power compensator and filtering in some electric field
Device, to solve harmonic wave interference.
But, the reactor that reactive power compensator generally used now is configured is 5%, 6%, 7% or 12%, 14%
, it is fixing, can not changed using scene.And, existing reactive power compensator does not have filter function, filtering
Device and reactive power compensator need to be respectively mounted, install and equipment relatively costly.
Content of the invention
The technical problem to be solved in the present invention is the idle benefit in order to overcome reactive power compensator in prior art to be provided
The amount of repaying is fixed it is impossible to adapt to live grid condition, and reactive-load compensation cannot provide the defect of filter function, provides one kind can fit
Answer electrical network, automatically adjust inductance parameters and there is the reactive power compensator of passive filtering function.
The present invention is to solve above-mentioned technical problem by following technical proposals：A kind of have the idle of passive filtering function
Compensation device, for electrical network bus, its feature is, described reactive power compensator include a signal pickup assembly, a controller,
One reactive compensation unit and a passive filtering unit,
Described signal pickup assembly is used for gathering the signal of described electrical network bus and sending described signal to described control
Device；
Described reactive compensation unit includes one first inductance unit, one first mobile unit and one first capacitive means,
Described first inductance unit includes a first coil and and is used in described first coil along the axial-movement of first coil
The first iron core；
Described passive filtering unit includes one second inductance unit, one second mobile unit and one second capacitive means,
Described second inductance unit includes one second coil and and is used in described second coil along the axial-movement of the second coil
The second iron core；
Described controller is used for according to described signal generation the control of reactive power compensating amount and passive filtering controlled quentity controlled variable, and according to institute
Stating the control of reactive power compensating amount controls described first mobile unit to adjust length in described first coil for described first iron core, root
Described second mobile unit is controlled to adjust length in described second coil for described second iron core according to described passive filtering controlled quentity controlled variable
Degree.
By the data acquisition to electrical network bus, can be collection voltages signal and flow through reactive compensation unit electric current letter
Number, reactive-load compensation amount and the passive filtering unit real-time regulation of reactive compensation unit offer are provided.Reactive compensation unit and
The inductance parameters of passive filtering unit, the reactive-load compensation amount that can provide are no longer changeless, can effectively adapt to existing
The installation environment of field.
By the signals collecting to electrical network bus, just can be analyzed using existing computational methods and computing chip and collect
Signal and thereby determine that power factor harmonic information, and then draw, reactive compensation unit needs to provide how many compensation rates
Demand could be met, the inductance parameters of passive filtering need to be adjusted to the requirement that how much can meet resonant frequency.
The reactive power compensator of the application can not only realize reactive-load compensation, and has passive filtering function, can be simultaneously
Carry out reactive-load compensation harmonic improvement.Decrease in-site installation space and debug time.Reactive-load compensation harmonic is administered can be each
Its duty of thing, does not interfere with each other respective independence.Respectively there is the protection circuit of itself.
It is preferred that described second capacitive means are connected with described second inductance unit, described passive filtering unit is parallel to
Described reactive compensation unit, the output end of passive filtering unit is connected with described electrical network bus by a fuse.
It is preferred that the capacitance that described first capacitive means provide is bigger than the capacitance that described second capacitive means provide extremely
Few an order of magnitude.
The order of magnitude refers to a series of 10 power, and that is, the ratio between the two neighboring order of magnitude is 10.By setting of above-mentioned capacitance
Put so that passive filtering unit does not produce impact to reactive compensation unit.
It is preferred that described first capacitive means include some capacitor cells parallel with one another, each capacitor cell is all corresponding
One numbering, described controller according to described the control of reactive power compensating amount screening described number and turn on filter out numbering corresponding to
Capacitor cell.
When described parallel connection refers to that capacitor cell constitutes loop, capacitor cell is parallel with one another.Each capacitor cell can be connected
One switch, described controller controls the conducting of described capacitor by controlling switch.Numbering institute after being selected by conducting is right
The capacitor cell answered, also confirms to need the quantity of the capacitor cell of conducting.
It is preferred that the excursion of the numerical value of inductance value of described first inductance unit is equal to 0.03C1～0.2C1, wherein
C1For the numerical value of the capacitance of described first capacitive means, excursion of the numerical value of inductance value of described second inductance unit etc.
In 0.02C2～0.2C2, wherein C2Numerical value for the capacitance of described second capacitive means.
By the setting to above-mentioned inductance value and capacitance, the harmonic wave can filter, avoided in most cases disturbs.
It is preferred that described signal includes voltage signal and the electric current letter through described reactive compensation unit of electrical network bus
Number.
Preferably described first iron core and described second iron core are microcrystallizing alloy iron core.
Microcrystallizing alloy is that a kind of metal grain is refined to micron-sized cast alloy materials, has the conjunction of this ultra micro crystal grain
Gold can show the comprehensive mechanical performance more excellent than other similar alloys and mechanical property, superpower stability and
Dimensional stability, fabulous antifriction quality and good wearability.The idle benefit of the application can be improved using microcrystallizing alloy iron core
Repay the performance of device.
It is preferred that described first mobile unit and described second mobile unit all include a synchronous motor, a gear and
One tooth bar engaging with described gear, on the rotor of described synchronous motor, described tooth bar is connected described gear with iron core, institute
State controller for controlling the synchronous motor of the first mobile unit to rotate to adjust the first iron according to described the control of reactive power compensating amount
Length in described first coil for the core, controls the synchronous motor rotation of the second mobile unit according to described passive filtering controlled quentity controlled variable
To adjust length in described second coil for second iron core.
Described tooth bar is connected with iron core, refers to that the tooth bar in the first mobile unit is connected with the first iron core, the second mobile list
Tooth bar in unit is connected with the second iron core.The axis (center line) of tooth bar and the axis of iron core can be described on the same line
Straight line is also the axis of coil.Using the cooperation of described gear and described tooth bar, the convert rotational motion of synchronous motor is become
Linear motion on described straight line.Described inductance controlled quentity controlled variable can be the rotation controlled quentity controlled variable to motor, by the control to motor
Complete the control of iron core length in coil, to adjust described inductance parameters.
It is preferred that described reactive power compensator also includes a display unit, described display unit is used for showing described idle
Compensating unit and/or the job information of described passive filtering unit.
It is preferred that described job information includes the current reactive-load compensation amount providing of reactive compensation unit, passive filtering unit
The harmonic frequency of work, the power factor of described electrical network bus, the harmonic information of described electrical network bus, the inductance ginseng of inductance unit
In the quantity of the capacitor cell being in work of number, the capacitance parameter of the first capacitive means or the first capacitive means and numbering one
Plant or several.
Described display unit shows multiple real time information, facilitates operating personnel to grasp field condition.For described reactive-load compensation
The installation of device, work provides convenient.
On the basis of meeting common sense in the field, above-mentioned each optimum condition, can be combined, obtain final product each preferable reality of the present invention
Example.
The positive effect of the present invention is：Not only reactive-load compensation can be carried out but also harmonic wave control can be carried out.Reactive-load compensation fills
Putting adjustable inductance value makes reactive power compensation circuit avoid the major harmonic frequency of electrical network.Passive filtering unit adjustable inductance value makes
Its resonant frequency is close with the major harmonic frequency of electrical network, so that the inductance through passive filtering unit for the major harmonic of electrical network and electricity
Hold flow direction the earth, thus administering to the harmonic wave of electrical network.Scene only needs to install " has the reactive-load compensation dress of passive filtering function
Put " cabinet can carry out reactive-load compensation harmonic improvement simultaneously.Decrease in-site installation space and debug time.Reactive-load compensation is harmonious
Ripple administer can each thing its duty, do not interfere with each other respective independence.Respectively there is the protection circuit of itself.
Brief description
Fig. 1 is the structural representation of the reactive power compensator of the embodiment of the present invention.
Fig. 2 is the structural representation of the first mobile unit of the embodiment of the present invention.
Specific embodiment
Further illustrate the present invention below by the mode of embodiment, but therefore do not limit the present invention to described reality
Apply among a scope.
Embodiment
Referring to Fig. 1, Fig. 2, the present embodiment provides a kind of reactive power compensator with passive filtering function, female for electrical network
Line 1, described reactive power compensator includes a signal pickup assembly 11, a controller 12, a display unit 15, a reactive-load compensation list
Unit and a passive filtering unit.
Described signal pickup assembly is used for gathering the signal of described electrical network bus 1 and sending described signal to described control
Device, described signal includes voltage signal and the current signal through described reactive power compensator of electrical network bus 1.
Described controller is used for according to described signal generation the control of reactive power compensating amount and passive filtering controlled quentity controlled variable.
Described reactive compensation unit includes one first inductance unit 13, one first mobile unit 14 and one first electric capacity dress
Put 16, described first inductance unit includes a first coil 131 and and is used in described first coil 131 along first coil
First iron core 132 of 131 axial-movement.
Described first capacitive means include some capacitor cells parallel with one another, all corresponding numbering of each capacitor cell,
Described controller according to described the control of reactive power compensating amount screening described number and turn on filter out numbering corresponding to electric capacity list
Unit.
The excursion of the numerical value of inductance value of described first inductance unit is equal to 0.03C1～0.2C1, wherein C1For described
The numerical value of the capacitance of the first capacitive means.0.03C1～0.2C1It is the adjustable range of the inductance value of the first inductance unit.
Described passive filtering unit includes one second inductance unit 17, one second mobile unit and one second capacitive means
18, described second inductance unit 17 includes one second coil and and is used in described second coil along the axis of the second coil
Second iron core of motion.
Described second capacitive means 18 are connected with described second inductance unit 17, and described passive filtering unit is parallel to described
Reactive compensation unit, the output end of passive filtering unit is connected with described electrical network bus by a fuse 19.
The excursion of the numerical value of inductance value of described second inductance unit is equal to 0.02C2～0.2C2, wherein C2For described
The numerical value of the capacitance of the second capacitive means 18.0.02C2～0.2C2It is the adjustable range of the inductance value of the second inductance unit.
Wherein, big 10 times of the capacitance that the capacitance that described first capacitive means provide provides than described second capacitive means
More than.
Described first mobile unit 14 and described second mobile unit all include a synchronous motor 141, a gear 142 and
The tooth bar 143 that one is engaged with described gear, described gear on the rotor 144 of described synchronous motor, described tooth bar 143 and iron
Core connects.What Fig. 2 represented is the structural representation of the first mobile unit 14, the structure of the second mobile unit and the in the present embodiment
One mobile unit is identical.
Described controller is additionally operable to control the synchronous motor rotation of the first mobile unit according to described the control of reactive power compensating amount
To adjust length in described first coil for first iron core 132, the second mobile list is controlled according to described passive filtering controlled quentity controlled variable
The synchronous motor of unit rotates to adjust length in described second coil for second iron core.
Described display unit is used for showing described reactive compensation unit and/or the job information of described passive filtering unit.
Described job information include the current reactive-load compensation amount providing of reactive compensation unit, passive filtering cell operation humorous
Wave frequency rate, the power factor of described electrical network bus, the harmonic information of described electrical network bus, the inductance parameters of inductance unit, first
The quantity of the capacitor cell being in work of the capacitance parameter of capacitive means or the first capacitive means.
The course of work of the present embodiment reactive power compensator is：
Reactive power compensator accesses electrical network bus, and signal pickup assembly 11 passes through voltage transformer 111 summation current transformer
The electric current and the mains voltage signal that flow through reactive compensation unit of 112 collection electrical network buses.And by described current signal and voltage
Signal transmission is to described controller.
Described controller analyzes described current signal and voltage signal, determines power factor harmonic information.Described control
Reactive-load compensation amount according to required for electrical network for the device and resonant frequency generate the control of reactive power compensating amount and passive filtering controlled quentity controlled variable.
Described controller is rotated into corresponding synchronous motor using the control of reactive power compensating amount or passive filtering controlled quentity controlled variable
Row control, synchronous motor be rotated through gear and tooth bar changes into the linear motion of described microcrystallizing alloy iron core, thus adjusting
Length in coil for the microcrystallizing alloy iron core.In the present embodiment, by the calculating to power factor harmonic information, need idle
The length that the iron core of compensating unit is in coil is 15mm, and under described length, the inductance parameters of the first inductance unit 13 can
Meet the demand of current electric grid, and the length that current first iron core is in coil is 5mm, then controller controls iron core to have been enter into the
The direction of one coil, mobile 10mm.And described synchronous motor iron core moves 1mm for each revolution, therefore in order that described first
Iron core moves 10mm along the direction entering first coil, and described controller controls described synchronous motor rotation 10 circle.And for no
The same reactive compensation unit of control mode of the iron core in the filter unit of source.
Described controller utilizes described the control of reactive power compensating amount to control described first capacitive means to turn on described capacitor cell
Quantity and specify numbering capacitor cell.In the present embodiment, need the capacitance parameter that 3 capacitor cells in parallel provide
Disclosure satisfy that the demand of current electric grid, and currently only numbering is 01 capacitor cell conducting, then controller controls numbering 02,03
Capacitor cell switch conduction.
The reactive power compensator with passive filtering function of the present embodiment not only can carry out reactive-load compensation but also can carry out harmonic wave
Administer.Reactive power compensator adjustable inductance value makes reactive power compensation circuit avoid the major harmonic frequency of electrical network.Passive filtering list
First adjustable inductance value makes its resonant frequency close with the major harmonic frequency of electrical network, so that the major harmonic of electrical network is through passive filter
The inductance of ripple unit and electric capacity flow direction the earth, thus administer to the harmonic wave of electrical network.Scene only needs to install " have passive filtering
The reactive power compensator of function " cabinet can carry out reactive-load compensation harmonic improvement simultaneously.Decrease in-site installation space and debugging
Time.Reactive-load compensation harmonic administer can each thing its duty, do not interfere with each other respective independence.Respectively there is the protection circuit of itself.
Although the foregoing describing the specific embodiment of the present invention, it will be appreciated by those of skill in the art that these
It is merely illustrative of, protection scope of the present invention is defined by the appended claims.Those skilled in the art is not carrying on the back
On the premise of the principle and essence of the present invention, various changes or modifications can be made to these embodiments, but these changes
Each fall within protection scope of the present invention with modification.
Claims (10)
1. a kind of reactive power compensator with passive filtering function, for electrical network bus it is characterised in that described reactive-load compensation
Device includes a signal pickup assembly, a controller, a reactive compensation unit and a passive filtering unit,
Described signal pickup assembly is used for gathering the signal of described electrical network bus and sending described signal to described controller；
Described reactive compensation unit includes one first inductance unit, one first mobile unit and one first capacitive means, described
First inductance unit include a first coil and be used in described first coil along first coil axial-movement the
One iron core；
Described passive filtering unit includes one second inductance unit, one second mobile unit and one second capacitive means, described
Second inductance unit include one second coil and be used in described second coil along the second coil axial-movement the
Two iron cores；
Described controller is used for according to described signal generation the control of reactive power compensating amount and passive filtering controlled quentity controlled variable, and according to described nothing
Work(compensates controlled quentity controlled variable and controls described first mobile unit to adjust length in described first coil for described first iron core, according to institute
Stating passive filtering controlled quentity controlled variable controls described second mobile unit to adjust length in described second coil for described second iron core.
2. there is the reactive power compensator of passive filtering function as claimed in claim 1 it is characterised in that described second electric capacity
Device is connected with described second inductance unit, and described passive filtering unit is parallel to described reactive compensation unit, passive filtering list
The output end of unit is connected with described electrical network bus by a fuse.
3. there is the reactive power compensator of passive filtering function as claimed in claim 2 it is characterised in that described first electric capacity
The capacitance that device provides at least one order of magnitude big than the capacitance that described second capacitive means provide.
4. there is the reactive power compensator of passive filtering function as claimed in claim 3 it is characterised in that described first electric capacity
Device includes some capacitor cells parallel with one another, all corresponding numbering of each capacitor cell, and described controller is according to described nothing
Work(compensation controlled quentity controlled variable screening is described to number and turns on the corresponding capacitor cell of the numbering filtering out.
5. there is the reactive power compensator of passive filtering function as claimed in claim 3 it is characterised in that described first inductance
The excursion of the numerical value of the inductance value of unit is equal to 0.03C1～0.2C1, wherein C1Capacitance for described first capacitive means
Numerical value, the excursion of the numerical value of inductance value of described second inductance unit is equal to 0.02C2～0.2C2, wherein C2For described
The numerical value of the capacitance of the second capacitive means.
6. there is the reactive power compensator of passive filtering function as claimed in claim 1 it is characterised in that described signal includes
The voltage signal of electrical network bus and the current signal through described reactive compensation unit.
7. there is the reactive power compensator of passive filtering function as claimed in claim 1 it is characterised in that described first iron core
It is microcrystallizing alloy iron core with described second iron core.
8. there is the reactive power compensator of passive filtering function as claimed in claim 1 it is characterised in that described first is mobile
Unit and described second mobile unit all include a synchronous motor, a gear and a tooth bar engaging with described gear, described
On the rotor of described synchronous motor, described tooth bar is connected gear with iron core, and described controller is used for according to described idle benefit
Repaying controlled quentity controlled variable controls the synchronous motor of the first mobile unit to rotate to adjust length in described first coil for first iron core, root
Rotate according to the synchronous motor that described passive filtering controlled quentity controlled variable controls the second mobile unit to adjust the second iron core in described second line
Length in circle.
9. there is the reactive power compensator of passive filtering function as claimed in claim 1 it is characterised in that described reactive-load compensation
Device also includes a display unit, and described display unit is used for showing described reactive compensation unit and/or described passive filtering list
The job information of unit.
10. there is the reactive power compensator of passive filtering function as claimed in claim 9 it is characterised in that described work is believed
Breath includes the current reactive-load compensation amount providing of reactive compensation unit, the harmonic frequency of passive filtering cell operation, described electrical network mother
The power factor of line, the harmonic information of described electrical network bus, the inductance parameters of inductance unit, the capacitance parameter of the first capacitive means
Or first capacitive means the quantity of the capacitor cell being in work and one or more of numbering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410535115.0A CN104300551B (en) | 2014-10-11 | 2014-10-11 | Reactive power compensation device with passive filter function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410535115.0A CN104300551B (en) | 2014-10-11 | 2014-10-11 | Reactive power compensation device with passive filter function |
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| CN104300551A CN104300551A (en) | 2015-01-21 |
| CN104300551B true CN104300551B (en) | 2017-02-15 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106329542A (en) * | 2015-07-10 | 2017-01-11 | 美登思电气（上海）有限公司 | Control method and system for reactive power compensation device |
| CN107240919A (en) * | 2017-06-21 | 2017-10-10 | 上海广吉电气有限公司 | Intelligent active filter |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200997531Y (en) * | 2006-12-26 | 2007-12-26 | 中冶南方工程技术有限公司 | Power-supply passive filter |
| CN200997530Y (en) * | 2006-12-26 | 2007-12-26 | 中冶南方工程技术有限公司 | Power-supply passive filter |
| CN101938130A (en) * | 2010-09-15 | 2011-01-05 | 哈尔滨工业大学 | High voltage filter and dynamic reactive power compensation control system combining PPF with TSC and control method thereof |
| CN204118752U (en) * | 2014-10-11 | 2015-01-21 | 上海致维自动化控制有限公司 | There is the reactive power compensator of passive filtering function |
-
2014
- 2014-10-11 CN CN201410535115.0A patent/CN104300551B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200997531Y (en) * | 2006-12-26 | 2007-12-26 | 中冶南方工程技术有限公司 | Power-supply passive filter |
| CN200997530Y (en) * | 2006-12-26 | 2007-12-26 | 中冶南方工程技术有限公司 | Power-supply passive filter |
| CN101938130A (en) * | 2010-09-15 | 2011-01-05 | 哈尔滨工业大学 | High voltage filter and dynamic reactive power compensation control system combining PPF with TSC and control method thereof |
| CN204118752U (en) * | 2014-10-11 | 2015-01-21 | 上海致维自动化控制有限公司 | There is the reactive power compensator of passive filtering function |
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