CN105914756B - A kind of device for compensating business and residential electricity consumption electric appliance reactive power - Google Patents
A kind of device for compensating business and residential electricity consumption electric appliance reactive power Download PDFInfo
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- CN105914756B CN105914756B CN201610268652.2A CN201610268652A CN105914756B CN 105914756 B CN105914756 B CN 105914756B CN 201610268652 A CN201610268652 A CN 201610268652A CN 105914756 B CN105914756 B CN 105914756B
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- 230000005611 electricity Effects 0.000 title claims abstract description 29
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 34
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 34
- 239000010703 silicon Substances 0.000 claims abstract description 34
- 239000003990 capacitor Substances 0.000 claims abstract description 31
- 238000005259 measurement Methods 0.000 claims abstract description 11
- 239000000203 mixture Substances 0.000 claims description 7
- 238000005070 sampling Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 230000003068 static effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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
- H02J3/1821—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators
- H02J3/1871—Methods for planning installation of shunt reactive power compensators
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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
-
- 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)
Abstract
A kind of device for compensating business and residential electricity consumption electric appliance reactive power.It includes voltage transformer pt, Current Transmit, capacitor C, the first capacitor C1, reactor L, the first reactor L1, fuse Fu, first fuse Fu1, switch P, first switch P1, discharge coil LD, the first discharge coil LD1, the first silicon-controlled V1, the second silicon-controlled V2, microcomputer actual measurement device CPU；Effect of the present invention：Higher hamonic wave can be reduced to endanger caused by electric appliance, reduce electrical heating, prolong the service life, the power factor of existing business and residential electricity consumption electric appliance can be increased to 0.95 or more from 0.6~0.7, effective compensation reactive loss, 10% or more can be economized on electricity, it is seen that the technical economic benefit of economize on electricity is very huge.
Description
Technical field
The invention belongs to grid reactive power compensation technology fields, more particularly to one kind for compensating business and residential electricity consumption electricity
The device of device reactive power.
Background technology
With the development of economy, the raising of living standards of the people, power load are being continuously increased, since reactive power consumption is more next
Bigger, system needs the reactive power compensated also more and more, therefore, in recent years, city net, the upgrading of rural power grids and transformer increase-volume etc.
The transformation pressure of power grid is also increasing, this all brings inconvenience to the work of power supply department and the life of the people.
The case where current business and residential electricity consumption, has the following problems：
(1) business and electricity consumption of resident account for about the 30%-40% of total grid capacity, and electricity consumption is with daily peak valley
And all great changes have taken place for the variation in season.
(2) commercially relatively low with the power factor (PF) of residential electricity consumption electric appliance, generally all 0.6~0.7 or so, and electric appliance generates
Higher hamonic wave is more, predominantly 2 times and the above higher hamonic wave, these harmonic waves will lead to voltage, current waveform distortion, can make such as
Television class electric appliance image quality is poor, and noise aggravates, and all electrical heatings, service efficiency is made to reduce, while also make electric appliance
Service life is reduced.
Invention content
To solve the above-mentioned problems, the purpose of the present invention is to provide one kind for compensate business and residential electricity consumption electric appliance without
The device of work(power.
In order to achieve the above object, provided by the present invention for the device of compensation business and residential electricity consumption electric appliance reactive power
Including：
Voltage transformer pt, Current Transmit, capacitor C, the first capacitor C1, reactor L, the first reactor L1,
Fuse Fu, first fuse Fu1, switch P, first switch P1, discharge coil LD, the first discharge coil LD1, it is first silicon-controlled
V1, the second silicon-controlled V2, microcomputer actual measurement device CPU；Wherein：The voltage transformer pt primary side both ends phase line with 220V power supplys respectively
L and zero curve N is connected, its secondary side both ends is connected with the voltage sample input terminal of microcomputer actual measurement device CPU, and microcomputer surveys device
The current sampling port of CPU is connected with Current Transmit, two output ends of microcomputer actual measurement device CPU are controllable with first respectively
The gate pole control terminal of the silicon-controlled V2 of silicon V1 and second is connected, Current Transmit be mounted on zero curve N and load end zero curve N1 it
Between, household electrical appliance are connected to as the load of the present apparatus between phase line L and load end zero curve N1；
Capacitor C, reactor L, fuse Fu, switch P, discharge coil LD, the first silicon-controlled V1 and the second silicon-controlled V2
Dynamic compensating device FD is formed, wherein：The silicon-controlled V2 parallel connected in reverse phase of first silicon-controlled V1 and second, forms silicon-controlled branch；Electricity
Container C and fuse Fu is serially connected composition series arm, and one end fuse Fu of series arm is connected by switch P and phase line L
It connects, one end capacitor C of series arm passes sequentially through reactor L and silicon-controlled branch and connect with load end zero curve N1；Discharge lines
Enclose LDIt is in parallel with series arm；
First capacitor C1, the first reactor L1, first fuse Fu1, first switch P1 and the first discharge coil LD1Group
At static compensating device TSC, wherein：First capacitor C1 and first fuse Fu1 is serially connected the first series arm of composition, the
One end first fuse Fu1 of one series arm passes sequentially through the first reactor L1 and first switch P1 is connect with phase line L, and first
First one end capacitor C1 of series arm is connect with load end zero curve N1；First discharge coil LD1 with the first series arm phase
It is in parallel；
The voltage transformer pt is used to acquire the voltage signal of 220V power supplys, and Current Transmit is for acquiring 220V
Current signal on zero-power line.
The first capacitor C1 and the first reactor L1 forms 3 subharmonic filters, capacitor C and reactor L groups
At 5 subharmonic filters.
Provided by the present invention for the effect of the device of compensation business and residential electricity consumption electric appliance reactive power：Height can be reduced
Subharmonic is endangered caused by electric appliance, is reduced electrical heating, is prolonged the service life, at the same time it can also existing business and residence
The power factor of people's electrical appliance is increased to 0.95 or more from 0.6~0.7, effective compensation reactive loss, can economize on electricity 10% or more.
By taking Tianjin Power Grid as an example：Net capacity is about 12,000,000 kilowatts, and appliance load is ten thousand kilowatts of 1200*0.4=480, if using this
It is calculated, then can economized on electricity for 10% with power saving rate after device：Ten thousand kilowatts of 480*10%=48, it is seen that the technical economic benefit of economize on electricity is non-
Chang Ju great.
Description of the drawings
Fig. 1 is the circuit diagram provided by the present invention for the device of compensation business and residential electricity consumption electric appliance reactive power.
Fig. 2 is the voltage waveform and current waveform figure of power supply.
Fig. 3 is the Principles of Reactive Compensation figure of the present apparatus.
Specific implementation mode
In the following with reference to the drawings and specific embodiments to idle provided by the present invention for compensation business and residential electricity consumption electric appliance
The device of power is described in detail.
As shown in Figure 1, including provided by the present invention for the device of compensation business and residential electricity consumption electric appliance reactive power：
Voltage transformer pt, Current Transmit, capacitor C, the first capacitor C1, reactor L, the first reactor L1,
Fuse Fu, first fuse Fu1, switch P, first switch P1, discharge coil LD, the first discharge coil LD1, it is first silicon-controlled
V1, the second silicon-controlled V2, microcomputer actual measurement device CPU；Wherein：The voltage transformer pt primary side both ends phase line with 220V power supplys respectively
L and zero curve N is connected, its secondary side both ends is connected with the voltage sample input terminal of microcomputer actual measurement device CPU, and microcomputer surveys device
The current sampling port of CPU is connected with Current Transmit, two output ends of microcomputer actual measurement device CPU are controllable with first respectively
The gate pole control terminal of the silicon-controlled V2 of silicon V1 and second is connected, Current Transmit be mounted on zero curve N and load end zero curve N1 it
Between, household electrical appliance are connected to as the load of the present apparatus between phase line L and load end zero curve N1；
Capacitor C, reactor L, fuse Fu, switch P, discharge coil LD, the first silicon-controlled V1 and the second silicon-controlled V2
Dynamic compensating device FD is formed, wherein：The silicon-controlled V2 parallel connected in reverse phase of first silicon-controlled V1 and second, forms silicon-controlled branch；Electricity
Container C and fuse Fu is serially connected composition series arm, and one end fuse Fu of series arm is connected by switch P and phase line L
It connects, one end capacitor C of series arm passes sequentially through reactor L and silicon-controlled branch and connect with load end zero curve N1；Discharge lines
Enclose LDIt is in parallel with series arm；
First capacitor C1, the first reactor L1, first fuse Fu1, first switch P1 and the first discharge coil LD1Group
At static compensating device TSC, wherein：First capacitor C1 and first fuse Fu1 is serially connected the first series arm of composition, the
One end first fuse Fu1 of one series arm passes sequentially through the first reactor L1 and first switch P1 is connect with phase line L, and first
First one end capacitor C1 of series arm is connect with load end zero curve N1；First discharge coil LD1 with the first series arm phase
It is in parallel；
The voltage transformer pt is used to acquire the voltage signal of 220V power supplys, and Current Transmit is for acquiring 220V
Current signal on zero-power line.
Power factor can be increased to 0.8~0.9 or so by static reactive device FD, and dynamic reactive compensation device TSC will
The power factor of electric appliance is increased to 0.96 or more；The first capacitor C1 and the first reactor L1 forms 3 subharmonic mistakes
Filter, capacitor C and reactor L form 5 subharmonic filters.
The angle that electric current I lags behind voltage U is power factorInAngle (as shown in Figure 2), microcomputer is real in Fig. 1
It is power factor to survey device CPU and measure the angle between voltage U and electric current IInAngle.Angle changes, power factorAlso changing.It is obtained with actual measurementIt is compared with preset value 0.95~0.99, if variant pass through tune
The size of silicon-controlled phase shifting angle is saved to adjust the electric current flowed through in capacitor C, realizes the mesh of stepless control reactive power
, ensureNear 0.95~0.99.
Residential electricity consumption electric appliance reactive-load compensation calculated example：
If household electrical appliance capacity is：
P=1kWThenAs shown in Figure 3；
CauseThen
If power factor is improved,Then
Q2=Q-Q1=1-0.28=0.72kvar
In principle wiring Fig. 1, because of Qc=Uec*Iec=Iec*Iec*Xc=Uec*Uec/Xc=2 π fC*Uec*Uec*
10-3
Obtain C=Qc/2 π f*Uec*Uec*10-3=48uf
(wherein, Uec=220V=0.22kV, Xc=2 π fC=0.314C)
It willWhen being increased to 0.85 from 0.7,Then
Q2=Q-Q1=1-0.62=0.38kvar
C1=Q2/2 π f*Uec*Uec*10-3=25uf I1ec=2 π f*C1*Uec*10-3=0.314*25*0.22*10-3
=1.7A
C0=C-C1=48-25=23uf I0ec=2 π fC*Uec=0.314*23*0.22=1.6A.
The present apparatus is utilized installs reactive power compensator, in business and residential electricity consumption electric appliance at the electrical appliance of network load end
The technology of upper installing static passive compensation device C1 and dynamic reactive compensation device TSC, can be by electric appliance by static reactive power compensation
Power factor be increased to 0.8~0.9 or so from 0.6~0.7, and dynamic passive compensation reaches by adjusting silicon-controlled open angle
The output for adjusting capacitance C reactive currents, can be increased to 0.96 or more by power factor.The present apparatus both can be in loaded termination quotient
Reactive-load compensation is provided at industry and residential electricity consumption, and can realize electric appliance will damage the aggreggate utilities such as energy saving, harmonic carcellation, to effectively
Improve the utilization rate of these electric appliances in ground.
Claims (2)
1. a kind of device for compensating business and residential electricity consumption electric appliance reactive power, it is characterised in that：Described is used to compensate
Commercially and the device of residential electricity consumption electric appliance reactive power includes：
Voltage transformer pt, Current Transmit, capacitor C, the first capacitor C1, reactor L, the first reactor L1, fusing
Device Fu, first fuse Fu1, switch P, first switch P1, discharge coil LD, the first discharge coil LD1, the first silicon-controlled V1,
Two silicon-controlled V2 and microcomputer actual measurement device CPU；Wherein：Voltage transformer pt primary side both ends respectively with the phase line L of 220V power supplys and
Zero curve N is connected, its secondary side both ends is connected with the voltage sample input terminal of microcomputer actual measurement device CPU, and microcomputer surveys device CPU
Current sampling port be connected with Current Transmit, two output ends of microcomputer actual measurement device CPU it is silicon-controlled with first respectively
The gate pole control terminal of the silicon-controlled V2 of V1 and second is connected, and Current Transmit is mounted between zero curve N and load end zero curve N1,
Household electrical appliance are connected to as the load of the present apparatus between phase line L and load end zero curve N1；
Capacitor C, reactor L, fuse Fu, switch P, discharge coil LD, the silicon-controlled V2 compositions of the first silicon-controlled V1 and second it is dynamic
State compensation device FD, wherein：The silicon-controlled V2 parallel connected in reverse phase of first silicon-controlled V1 and second, forms silicon-controlled branch；Capacitor C with
Fuse Fu is serially connected composition series arm, and one end fuse Fu of series arm is connect by switch P with phase line L, series connection
One end capacitor C of branch passes sequentially through reactor L and silicon-controlled branch and is connect with load end zero curve N1；Discharge coil LDWith string
Connection branch is in parallel；
First capacitor C1, the first reactor L1, first fuse Fu1, first switch P1 and the first discharge coil LD1It forms quiet
State compensation device TSC, wherein：First capacitor C1 and first fuse Fu1 is serially connected the first series arm of composition, the first string
One end first fuse Fu1 of connection branch passes sequentially through the first reactor L1 and first switch P1 is connect with phase line L, the first series connection
First one end capacitor C1 of branch is connect with load end zero curve N1；First discharge coil LD1 is in parallel with the first series arm；
The voltage transformer pt is used to acquire the voltage signal of 220V power supplys, and Current Transmit is for acquiring 220V power supplys
Current signal on zero curve.
2. the device according to claim 1 for compensating business and residential electricity consumption electric appliance reactive power, it is characterised in that：
The first capacitor C1 and the first reactor L1 forms 3 subharmonic filters, and capacitor C and reactor L form 5 subharmonic
Filter.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610268652.2A CN105914756B (en) | 2016-04-26 | 2016-04-26 | A kind of device for compensating business and residential electricity consumption electric appliance reactive power |
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| CN201610268652.2A CN105914756B (en) | 2016-04-26 | 2016-04-26 | A kind of device for compensating business and residential electricity consumption electric appliance reactive power |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201608534U (en) * | 2009-10-30 | 2010-10-13 | 河南华盛铁路电气有限公司 | Microprocessor control voltage-regulating type reactive automatic compensating device of electrified railway |
| CN103178530A (en) * | 2013-04-15 | 2013-06-26 | 四川极度电控系统制造有限责任公司 | Intelligent high-voltage thyristor switched capacitor (TSC) reactive compensation device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100706265B1 (en) * | 2005-03-04 | 2007-04-11 | 시엔에이전기 주식회사 | Automatic Control Device for Controlling Power Factor |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201608534U (en) * | 2009-10-30 | 2010-10-13 | 河南华盛铁路电气有限公司 | Microprocessor control voltage-regulating type reactive automatic compensating device of electrified railway |
| CN103178530A (en) * | 2013-04-15 | 2013-06-26 | 四川极度电控系统制造有限责任公司 | Intelligent high-voltage thyristor switched capacitor (TSC) reactive compensation device |
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