CN104810836A - Intelligent capacity-regulating capacitor based on frequency modulation module - Google Patents
Intelligent capacity-regulating capacitor based on frequency modulation module Download PDFInfo
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- CN104810836A CN104810836A CN201510211521.6A CN201510211521A CN104810836A CN 104810836 A CN104810836 A CN 104810836A CN 201510211521 A CN201510211521 A CN 201510211521A CN 104810836 A CN104810836 A CN 104810836A
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- module
- capacitor
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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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
Abstract
The invention discloses an intelligent capacity-regulating capacitor based on a frequency modulation module. The intelligent capacity-regulating capacitor comprises a control switch, a power capacitor module and the intelligent frequency modulation module. The input end of the intelligent frequency modulation module is connected with the control switch. The output end of the intelligent frequency modulation module is connected with the power capacitor module. The intelligent capacity-regulating capacitor has the advantages that the frequency modulation module is driven by a CPU (central processing unit) automatically according to reactive compensation capacity needed by a power grid, frequency at two ends of the capacitor is adjusted to acquire corresponding compensation capacity, a fling-cut switch is not needed, and flashy flow interference is avoided, so that the problems of low compensation accuracy, unreasonable compensation and damage to the capacitor due to frequent switching are solved, and service life of the capacitor is prolonged.
Description
Technical field
The present invention relates to capacitor, especially a kind of capacity transfer Intelligent capacitor based on FM module.
Background technology
Along with the raising of scientific and technological level, the requirement of traditional processing technology also constantly promotes, and existing Intelligent capacitor technology cannot meet the meticulous compensation requirement of electric network reactive-load capacity completely.Scheme of Reactive Power Compensation traditional in capacitor box is equipped with required reactive compensation capacity according to the installed capacity of transformer by 30%, the Intelligent capacitor of multiple stage equivalent capability or capacitor is selected to be in parallel, adopt contactor or combination switch switching, this situation can cause compensation precision coarse, and effect is too poor, or crosses benefit or owe to mend, do not reach energy-conservation effect, requisite space is large, unreasonable, creates waste like this to resource and space.Operating passing zero do not accomplished by fling-cut switch, to shove interference to capacitor, shortening capatcitor useful life.
Summary of the invention
Technical problem to be solved by this invention is, a kind of capacity transfer Intelligent capacitor based on FM module is provided, program structure is simple, separate unit or multiple stage integrated without the need to switching, in reactive power compensation process needed for electrical network, automatically by FM module adjust frequency come soft change compensation capacity, avoid produce due to frequent switching shove to the shock problem of capacitor, extend the useful life of capacitor, more effective energy-conservation.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
A kind of capacity transfer Intelligent capacitor based on FM module, comprise control switch, power capacitor module and intelligent FM module, described intelligent FM module input is connected with control switch, and described intelligent FM module output is connected with power capacitor module.
Adopt regulating capacitor two side frequency thus the design of regulating capacitor capacitance, make in reactive power compensation process needed for electrical network, free control capacittance two ends frequency can be carried out according to the reactive power compensation amount of electrical network self, thus soft change compensation capacity, avoid produce due to frequent switching shove to the shock problem of capacitor, extend the useful life of capacitor, more effective energy-conservation.
Further, intelligence FM module comprises FM module, CPU control module, data acquisition module summation current transformer, the input of described current transformer is connected with control switch, the output of described current transformer is connected with the input of FM module, described current transformer gathers the electric current in each loop, the input of described FM module is connected with the output of CPU control module, the described input of CPU control module is connected with the output of data acquisition module, the input of described data acquisition module is connected with control switch with current transformer output, described power supply carries CPU control module and data acquisition module electric energy.
By the electric current I of the whole circuit of data collecting module collected, voltage U 1 and work time power factor (PF) u, then driven by CPU computing that to calculate gross power be S=I*U1, actual power is P=S*u, reactive power Q when calculating power factor (PF) u=
; When power factor (PF) brings up to u1 from u, apparent power is now S1=P/u1, reactive power Q 1=
, need capacitance reactive compensation amount Qc=Q-Q1.
Then according to Qc=WCU2=2 π fCU2, i.e. f=Qc/2 π CU2, calculate the frequency that electric capacity two ends should apply, then by drive circuit, control FM module and be adjusted to corresponding frequency f.
Further, FM module comprises rectification module and inversion module, the input of described rectification module is connected with the output of current transformer, the output of described rectification module is connected with the input of inversion module, the input of described inversion module is connected with the output of CPU control module, and the output of described inversion module is connected with power capacitor module.
Adopt the design of rectification module and inversion module, when alternating current is by after rectification module, alternating current becomes direct current, and then direct current is through inversion module, direct current becomes alternating current again, while inversion module, CPU control module, by adjustment loop load, changes the frequency of alternating current, thus soft change compensation capacity, avoid shoving to the shock problem of capacitor of producing due to frequent switching, extend the useful life of capacitor, more effective energy-conservation.
Further, rectification module is three phase rectifier module, described inversion module is three-phase inversion module, described power capacitor module comprises the capacitor of shell and enclosure, described shell is iron-clad, stainless steel case or aluminum hull, described capacitor is that corner connection capacitor or star connect capacitor, and described control switch is air switch.Structure is simple, reasonable in design.
Further, rectification module is MDQ, described inversion module is single-phase inversion module, described power capacitor module comprises the capacitor of shell and enclosure, described shell is iron-clad, stainless steel case or aluminum hull, described capacitor is single-phase electricity container, and described control switch is breaker of plastic casing.Structure is simple, reasonable in design.
Further, CPU control module comprises CPU drive circuit, CPU computing drives, the output that described CPU computing drives is connected with the input of CPU drive circuit, the input that described CPU computing drives is connected with data acquisition module output, and the described output of CPU drive circuit is connected with the input of FM module.
During work, drive computing to calculate the data analysis gathered by CPU, then by CPU drive circuit, FM module is controlled, be adjusted to the frequency of needs, just in time meet the compensation rate of electrical network needs, avoid the shock problem shoved to capacitor.
Compared with prior art, the capacity transfer Intelligent capacitor that the present invention is based on FM module has following advantage: 1) reactive power compensation is meticulous, effective, can not produce and mend or owe to mend; 2) adopt separate unit aggregation type reactive power compensator unit, reduce limited cabinet space, reduce investment, economize on resources; 3) without the need to fling-cut switch, interference of not shoving, extends the useful life of capacitor.
Accompanying drawing explanation
Fig. 1 is the circuit module figure of the embodiment of the present invention 1.
Fig. 2 is the circuit module figure of the embodiment of the present invention 2.
Fig. 3 is the circuit module figure of the embodiment of the present invention 3.
Embodiment
In order to understand the present invention further, below in conjunction with accompanying drawing, present invention is described.
Embodiment 1
As shown in Figure 1, a kind of capacity transfer Intelligent capacitor based on FM module that the present embodiment provides, comprise control switch, power capacitor module and intelligent FM module, described intelligent FM module input is connected with control switch, and described intelligent FM module output is connected with power capacitor module.
All parts for the present embodiment explains:
1) intelligent FM module comprises FM module, CPU control module, data acquisition module summation current transformer, the input of described current transformer is connected with control switch, the output of described current transformer is connected with the input of FM module, described current transformer gathers the electric current in each loop, the input of described FM module is connected with the output of CPU control module, the described input of CPU control module is connected with the output of data acquisition module, the input of described data acquisition module is connected with control switch with current transformer output, described power supply carries CPU control module and data acquisition module electric energy.
2) FM module comprises three phase rectifier module and three-phase inversion module, the described input of three phase rectifier module is connected with the output of current transformer, the output of described three phase rectifier module is connected with the input of three-phase inversion module, the input of described three-phase inversion module is connected with the output of CPU control module, and the output of described three-phase inversion module is connected with power capacitor module.
3) CPU control module comprises CPU drive circuit, CPU computing drives, the output that described CPU computing drives is connected with the input of CPU drive circuit, the input that described CPU computing drives is connected with data acquisition module output, and the described output of CPU drive circuit is connected with the input of FM module.
4) power capacitor module comprises the capacitor of shell and enclosure, described shell aluminum hull, and described capacitor is corner connection capacitor.
5) control switch is air switch.
Embodiment 2
As shown in Figure 2, a kind of capacity transfer Intelligent capacitor based on FM module that the present embodiment provides, comprise control switch, power capacitor module and intelligent FM module, described intelligent FM module input is connected with control switch, and described intelligent FM module output is connected with power capacitor module.
All parts for the present embodiment explains:
1) intelligent FM module comprises FM module, CPU control module, data acquisition module summation current transformer, the input of described current transformer is connected with control switch, the output of described current transformer is connected with the input of FM module, described current transformer gathers the electric current in each loop, the input of described FM module is connected with the output of CPU control module, the described input of CPU control module is connected with the output of data acquisition module, the input of described data acquisition module is connected with control switch with current transformer output, described power supply carries CPU control module and data acquisition module electric energy.
2) FM module comprises three phase rectifier module and three-phase inversion module, the described input of three phase rectifier module is connected with the output of current transformer, the output of described three phase rectifier module is connected with the input of three-phase inversion module, the input of described three-phase inversion module is connected with the output of CPU control module, and the output of described three-phase inversion module is connected with power capacitor module.
3) CPU control module comprises CPU drive circuit, CPU computing drives, the output that described CPU computing drives is connected with the input of CPU drive circuit, the input that described CPU computing drives is connected with data acquisition module output, and the described output of CPU drive circuit is connected with the input of FM module.
4) power capacitor module comprises the capacitor of shell and enclosure, and described shell is aluminum hull, and described capacitor is that star connects capacitor.
5) control switch is air switch.
Embodiment 3
As shown in Figure 3, a kind of capacity transfer Intelligent capacitor based on FM module that the present embodiment provides, comprise control switch, power capacitor module and intelligent FM module, described intelligent FM module input is connected with control switch, and described intelligent FM module output is connected with power capacitor module.
All parts for the present embodiment explains:
1) intelligent FM module comprises FM module, CPU control module, data acquisition module summation current transformer, the input of described current transformer is connected with control switch, the output of described current transformer is connected with the input of FM module, described current transformer gathers the electric current in each loop, the input of described FM module is connected with the output of CPU control module, the described input of CPU control module is connected with the output of data acquisition module, the input of described data acquisition module is connected with control switch with current transformer output, described power supply carries CPU control module and data acquisition module electric energy.
2) FM module comprises MDQ and single-phase inversion module, the input of described MDQ is connected with the output of current transformer, the output of described MDQ is connected with the input of single-phase inversion module, the input of described single-phase inversion module is connected with the output of CPU control module, and the output of described single-phase inversion module is connected with power capacitor module.
3) CPU control module comprises CPU drive circuit, CPU computing drives, the output that described CPU computing drives is connected with the input of CPU drive circuit, the input that described CPU computing drives is connected with data acquisition module output, and the described output of CPU drive circuit is connected with the input of FM module.
4) power capacitor module comprises the capacitor of shell and enclosure, described shell aluminum hull, and described capacitor is single-phase electricity container.
5) control switch is breaker of plastic casing.
Above three embodiments compared with prior art have following advantage: 1) reactive power compensation is meticulous, effective, can not produce and mend or owe to mend; 2) adopt separate unit aggregation type reactive power compensator unit, reduce limited cabinet space, reduce investment, economize on resources; 3) without the need to fling-cut switch, interference of not shoving, extends the useful life of capacitor.
These are only the preferred embodiment of the present invention, it should be pointed out that for the ordinary skill in the art, not departing under principle prerequisite of the present invention, can also make various deformation and improvement, this also should be considered as protection scope of the present invention.
Claims (6)
1. the capacity transfer Intelligent capacitor based on FM module, it is characterized in that: comprise control switch, power capacitor module and intelligent FM module, described intelligent FM module input is connected with control switch, and described intelligent FM module output is connected with power capacitor module.
2. the capacity transfer Intelligent capacitor based on FM module according to claim 1, it is characterized in that: described intelligent FM module comprises FM module, CPU control module, data acquisition module summation current transformer, the input of described current transformer is connected with control switch, the output of described current transformer is connected with the input of FM module, described current transformer gathers the electric current in each loop, the input of described FM module is connected with the output of CPU control module, the described input of CPU control module is connected with the output of data acquisition module, the input of described data acquisition module is connected with control switch with current transformer output, described power supply carries CPU control module and data acquisition module electric energy.
3. the capacity transfer Intelligent capacitor based on FM module according to claim 2, it is characterized in that: described FM module comprises rectification module and inversion module, the input of described rectification module is connected with the output of current transformer, the output of described rectification module is connected with the input of inversion module, the input of described inversion module is connected with the output of CPU control module, and the output of described inversion module is connected with power capacitor module.
4. the capacity transfer Intelligent capacitor based on FM module according to claim 3, it is characterized in that: described rectification module is three phase rectifier module, described inversion module is three-phase inversion module, described power capacitor module comprises the capacitor of shell and enclosure, described shell is iron-clad, stainless steel case or aluminum hull, described capacitor is that corner connection capacitor or star connect capacitor, and described control switch is air switch.
5. the capacity transfer Intelligent capacitor based on FM module according to claim 3, it is characterized in that: described rectification module is MDQ, described inversion module is single-phase inversion module, described power capacitor module comprises the capacitor of shell and enclosure, described shell is iron-clad, stainless steel case or aluminum hull, described capacitor is single-phase electricity container, and described control switch is breaker of plastic casing.
6. according to the capacity transfer Intelligent capacitor based on FM module in claim 2-5 described in any one, it is characterized in that: described CPU control module comprises CPU drive circuit, CPU computing drives, the output that described CPU computing drives is connected with the input of CPU drive circuit, the input that described CPU computing drives is connected with data acquisition module output, and the described output of CPU drive circuit is connected with the input of FM module.
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| CN201510211521.6A CN104810836B (en) | 2015-04-29 | 2015-04-29 | A kind of capacity transfer intelligent capacitor based on FM module |
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| CN201510211521.6A CN104810836B (en) | 2015-04-29 | 2015-04-29 | A kind of capacity transfer intelligent capacitor based on FM module |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1042461A (en) * | 1996-07-18 | 1998-02-13 | Nichicon Corp | Capacitor protective device for dc filter |
| CN201839257U (en) * | 2010-06-04 | 2011-05-18 | 北京博源普沃科技发展有限公司 | Frequency-conversion and reactive-compensation comprehensive device |
| CN204538708U (en) * | 2015-04-29 | 2015-08-05 | 浙江沃尔德电力电子有限公司 | A kind of capacity transfer Intelligent capacitor based on FM module |
-
2015
- 2015-04-29 CN CN201510211521.6A patent/CN104810836B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1042461A (en) * | 1996-07-18 | 1998-02-13 | Nichicon Corp | Capacitor protective device for dc filter |
| CN201839257U (en) * | 2010-06-04 | 2011-05-18 | 北京博源普沃科技发展有限公司 | Frequency-conversion and reactive-compensation comprehensive device |
| CN204538708U (en) * | 2015-04-29 | 2015-08-05 | 浙江沃尔德电力电子有限公司 | A kind of capacity transfer Intelligent capacitor based on FM module |
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| CN104810836B (en) | 2017-11-14 |
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