CN105958511A - Low-voltage dynamic reactive power compensation device - Google Patents
Low-voltage dynamic reactive power compensation device Download PDFInfo
- Publication number
- CN105958511A CN105958511A CN201610533909.2A CN201610533909A CN105958511A CN 105958511 A CN105958511 A CN 105958511A CN 201610533909 A CN201610533909 A CN 201610533909A CN 105958511 A CN105958511 A CN 105958511A
- Authority
- CN
- China
- Prior art keywords
- switching element
- acquisition module
- capacitor
- connects
- processor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
-
- 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
Abstract
The invention discloses a low-voltage dynamic reactive power compensation device, which comprises a controller, a switching element and a capacitor bank, wherein the controller is connected with the switching element and is used for controlling on or off of the switching element; the capacitor bank is connected with a three-phase power grid by a three-phase capacitor; the switching element is connected to a wire inlet end of the capacitor bank in series; the switching element is used for controlling on or off of the capacitor bank; the switching element is two anti-parallel thyristors; a signal collection module collects information in the power grid, transmits the collected information to a processor for processing, and then controls the capacitor bank to carry out power compensation on the power grid through a pulse output module; and a capacitor detection module can detect the working state of the capacitor bank in real time, so that power compensation is more stable and reliable.
Description
Technical field
The present invention relates to electrical equipment technical field, particularly to a kind of low-voltage dynamic reactive power compensation.
Background technology
The economy of Operation of Electric Systems and the quality of power supply have great relation, reactive power with reactive power
It is indispensable in power system.Due in electrical network and the reactive power loss of substantial amounts of inductive load, this
Just require that power system provides enough reactive powers, if reactive power deficiency will make under line voltage
Fall, the quality of power supply can not be guaranteed.
Summary of the invention
The technical problem to be solved in the present invention is to provide and a kind of can provide enough reactive factors for electrical network
Low-voltage dynamic reactive power compensation.
In order to solve above-mentioned technical problem, the technical scheme is that a kind of low voltage dynamic reactive-power compensation dress
Putting, including controller, switching element and Capacitor banks, the former described switching element of described control machine connects,
For controlling the break-make of switching element；Described Capacitor banks uses three-phase capacitor to be connected with three phase network, institute
Stating switching element and be connected on the end of incoming cables of described Capacitor banks, described switching element is used for controlling described capacitor
The break-make of group；Described switching element is two antiparallel IGCTs.
Further, described controller includes processor, signal acquisition module, pulse output module and electric capacity
Detection module, described signal acquisition module is connected with described processor, and the information of collection is delivered to described place
In reason device, described pulse processing module is connected with described processor, for controlling the break-make of switching element, institute
State capacitive detection module and connect described processor, for the duty of sensing capacitor group.
Further, described signal acquisition module includes voltage acquisition module, current acquisition module and electrical network
Frequency acquisition module, described voltage acquisition module, described current acquisition module and described mains frequency gather mould
The input of block arranges in electrical network phase line, and described outfan is connected on described processor.
A kind of low-voltage dynamic reactive power compensation, it is characterised in that: described electricity
Net frequency acquisition module includes connecting the voltage transformer on electrical network, and input connects described voltage transformer
The difference amplifier of outfan, input connects the zero-crossing detector of the outfan of described difference amplifier, institute
The outfan stating zero-crossing detector connects processor.
Further, described capacitive detection module includes two photoisolators in parallel, and two in parallel
The anode of one of them light emitting diode of photoisolator connects the Capacitor banks needing detection, another photoelectricity
The negative electrode of the light emitting diode of isolator connects the Capacitor banks needing detection, with the light-emitting diodes being connected negative electrode
The colelctor electrode of the triode that pipe coordinates connects DC source, and its emitter stage connects the sun of another light emitting diode
Pole connects the colelctor electrode of the audion that Capacitor banks coordinates, and this colelctor electrode is also connected with this Capacitor banks, with anode
Connecting the grounded emitter of the triode of the light emitting diode cooperation of Capacitor banks, described diode connects electric capacity
Being in series with resistance on the connecting line of device group, described resistor in parallel has capacitor.
Further, described processor is also associated with real time clock circuit, in time providing for processor
Between parameter.
Further, described pulse output module connects the driving electricity having for driving capacitor group switching
Road.
What the employing technique scheme present invention obtained has the beneficial effect that signal acquisition module is to the letter in electrical network
Breath is acquired, after processing in the information conveyance of collection to processor, through pulse output module control
Capacitor banks processed carries out power back-off to electrical network, and capacitive detection module can sensing capacitor group in real time
Duty so that power back-off is more stable, more reliable.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to enforcement
In example or description of the prior art, the required accompanying drawing used is briefly described, it should be apparent that, describe below
In accompanying drawing be only some embodiments of the present invention, for those of ordinary skill in the art, do not paying
On the premise of going out creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of a kind of low-voltage dynamic reactive power compensation of the present invention.
In figure: 1-switching element, 2-Capacitor banks, 3-processor, 4-signal acquisition module, 5-pulse are defeated
Go out module, 6-drive circuit, 7-capacitive detection module, 8-real time clock circuit.
Detailed description of the invention
Below in conjunction with the accompanying drawings the detailed description of the invention of the present invention is described further.At this it should be noted that
The explanation of these embodiments is adapted to assist in and understands the present invention, but be not intended that limitation of the invention.
As long as additionally, technical characteristic involved in each embodiment of invention described below is the most not
The conflict of composition just can be mutually combined.
In conjunction with accompanying drawing 1, the present invention is further described, make person of ordinary skill in the field preferably implement
The present invention, embodiment of the present invention one low-voltage dynamic reactive power compensation, including controller, switching element 1
With Capacitor banks 2, control the former switching element of machine 1 and connect, for controlling the break-make of switching element 1；Electric capacity
Device group 2 uses three-phase capacitor to be connected with three phase network, and switching element 1 is connected on the inlet wire of Capacitor banks 2
End, switching element 1 is for controlling the break-make of Capacitor banks 2；Switching element 1 is two antiparallel brilliant locks
Pipe.
Embodiment of the present invention controller includes processor 3, signal acquisition module 4, pulse output module 5 and electricity
Holding detection module 7, signal acquisition module 4 is connected with processor 3, and the information of collection is delivered to processor 3
In, pulse processing module is connected with processor 3, for controlling the break-make of switching element 1, capacitance detecting mould
Block 7 connects processor 3, for the duty of sensing capacitor group 2.It is also associated with on processor 3 in real time
Clock circuit 8, for providing time parameter for processor 3；Connect on pulse output module 5 and have for driving
The drive circuit 6 of Capacitor banks 2 switching.
Embodiment of the present invention signal acquisition module 4 includes voltage acquisition module, current acquisition module and electrical network frequency
Rate acquisition module, the input of voltage acquisition module, current acquisition module and mains frequency acquisition module is arranged
In electrical network phase line, outfan is connected on processor 3；Mains frequency acquisition module includes connecting on electrical network
Voltage transformer, input connects the difference amplifier of the outfan of voltage transformer, and input connects difference
The zero-crossing detector of the outfan of amplifier, the outfan of zero-crossing detector connects processor 3.
Embodiment of the present invention capacitive detection module 7 includes two photoisolators in parallel, two light in parallel
The anode of one of them light emitting diode of electric isolator connects the Capacitor banks 2 needing detection, another photoelectricity every
Negative electrode from the light emitting diode of device connects needs the Capacitor banks 2 of detection, with the light emitting diode being connected negative electrode
The colelctor electrode of the triode coordinated connects DC source, and its emitter stage connects the anode of another light emitting diode
Connecting the colelctor electrode of the audion that Capacitor banks 2 coordinates, this colelctor electrode is also connected with this Capacitor banks 2, with anode
Connecting the grounded emitter of the triode of the light emitting diode cooperation of Capacitor banks 2, diode connects capacitor
Being in series with resistance on the connecting line of group 2, resistor in parallel has capacitor.
Above in association with accompanying drawing, embodiments of the present invention are explained in detail, but the invention is not restricted to described
Embodiment.For a person skilled in the art, in the situation without departing from the principle of the invention and spirit
Under, these embodiments are carried out multiple change, revises, replace and modification, still fall within the protection of the present invention
In the range of.
Claims (7)
1. a low-voltage dynamic reactive power compensation, it is characterised in that: include controller, switching element and electricity
Container group, the former described switching element of described control machine connects, for controlling the break-make of switching element；Described
Capacitor banks uses three-phase capacitor to be connected with three phase network, and described switching element is connected on described Capacitor banks
End of incoming cables, described switching element is for controlling the break-make of described Capacitor banks；Described switching element is two
Antiparallel IGCT.
A kind of low-voltage dynamic reactive power compensation, it is characterised in that: described control
Device processed includes that processor, signal acquisition module, pulse output module and capacitive detection module, described signal are adopted
Collection module is connected with described processor, the information of collection is delivered in described processor, and described pulse processes
Module is connected with described processor, and for controlling the break-make of switching element, described capacitive detection module connects institute
State processor, for the duty of sensing capacitor group.
A kind of low-voltage dynamic reactive power compensation, it is characterised in that: described letter
Number acquisition module includes voltage acquisition module, current acquisition module and mains frequency acquisition module, described voltage
The input of acquisition module, described current acquisition module and described mains frequency acquisition module arranges electrical network phase line
On, described outfan is connected on described processor.
A kind of low-voltage dynamic reactive power compensation, it is characterised in that: described electricity
Net frequency acquisition module includes connecting the voltage transformer on electrical network, and input connects described voltage transformer
The difference amplifier of outfan, input connects the zero-crossing detector of the outfan of described difference amplifier, institute
The outfan stating zero-crossing detector connects processor.
A kind of low-voltage dynamic reactive power compensation, it is characterised in that: described electricity
Hold detection module and include two photoisolators in parallel, two one of them luminescences of photoisolator in parallel
The anode of diode connects the Capacitor banks needing detection, the moon of the light emitting diode of another photoisolator
Pole connects the Capacitor banks needing detection, with the colelctor electrode of the triode that the light emitting diode being connected negative electrode coordinates
Connecting DC source, its emitter stage connects the anode of another light emitting diode and connects the three of Capacitor banks cooperation
The colelctor electrode of pole pipe, this colelctor electrode is also connected with this Capacitor banks, is connected the light-emitting diodes of Capacitor banks with anode
The grounded emitter of the triode that pipe coordinates, the connecting line of described diode connection Capacitor banks is in series with electricity
Resistance, described resistor in parallel has capacitor.
A kind of low-voltage dynamic reactive power compensation, it is characterised in that: described place
It is also associated with real time clock circuit, for providing time parameter for processor on reason device.
A kind of low-voltage dynamic reactive power compensation, it is characterised in that: described arteries and veins
Rush to connect on output module and have the drive circuit for driving capacitor group switching.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610533909.2A CN105958511A (en) | 2016-07-07 | 2016-07-07 | Low-voltage dynamic reactive power compensation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610533909.2A CN105958511A (en) | 2016-07-07 | 2016-07-07 | Low-voltage dynamic reactive power compensation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105958511A true CN105958511A (en) | 2016-09-21 |
Family
ID=56901177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610533909.2A Pending CN105958511A (en) | 2016-07-07 | 2016-07-07 | Low-voltage dynamic reactive power compensation device |
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| CN (1) | CN105958511A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107910878A (en) * | 2017-11-30 | 2018-04-13 | 浙江双峰电气有限公司 | A kind of intelligent low-pressure reactive-load compensation electric power capacity switching control method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201533171U (en) * | 2009-10-20 | 2010-07-21 | 保定市尤耐特电气有限公司 | Reactive power optimization controller with network deployment and on-line monitoring functions |
| CN201846088U (en) * | 2010-11-17 | 2011-05-25 | 江苏南自通华电力自动化有限公司 | Intelligent capacitor with internal functions of electrical parameter measurement and protection |
| CN202333812U (en) * | 2011-10-28 | 2012-07-11 | 保定华源电气新技术开发有限公司 | Quick switching reactive power filtration and compensation device |
| CN102856920A (en) * | 2012-09-20 | 2013-01-02 | 金陵科技学院 | Three-phase unbalanced load compensation device and method |
-
2016
- 2016-07-07 CN CN201610533909.2A patent/CN105958511A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201533171U (en) * | 2009-10-20 | 2010-07-21 | 保定市尤耐特电气有限公司 | Reactive power optimization controller with network deployment and on-line monitoring functions |
| CN201846088U (en) * | 2010-11-17 | 2011-05-25 | 江苏南自通华电力自动化有限公司 | Intelligent capacitor with internal functions of electrical parameter measurement and protection |
| CN202333812U (en) * | 2011-10-28 | 2012-07-11 | 保定华源电气新技术开发有限公司 | Quick switching reactive power filtration and compensation device |
| CN102856920A (en) * | 2012-09-20 | 2013-01-02 | 金陵科技学院 | Three-phase unbalanced load compensation device and method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107910878A (en) * | 2017-11-30 | 2018-04-13 | 浙江双峰电气有限公司 | A kind of intelligent low-pressure reactive-load compensation electric power capacity switching control method |
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Application publication date: 20160921 |