CN110380417A - A kind of socket with reactance net side and load-side harmonic wave ability - Google Patents
A kind of socket with reactance net side and load-side harmonic wave ability Download PDFInfo
- Publication number
- CN110380417A CN110380417A CN201910742090.4A CN201910742090A CN110380417A CN 110380417 A CN110380417 A CN 110380417A CN 201910742090 A CN201910742090 A CN 201910742090A CN 110380417 A CN110380417 A CN 110380417A
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- Prior art keywords
- harmonic wave
- load
- unit
- socket
- reactance
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/06—Measuring real component; Measuring reactive component
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/66—Structural association with built-in electrical component
- H01R13/665—Structural association with built-in electrical component with built-in electronic circuit
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/66—Structural association with built-in electrical component
- H01R13/70—Structural association with built-in electrical component with built-in switch
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/66—Structural association with built-in electrical component
- H01R13/719—Structural association with built-in electrical component specially adapted for high frequency, e.g. with filters
-
- 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
-
- 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
-
- 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
- Y02E40/20—Active power filtering [APF]
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention discloses a kind of socket with reactance net side and load-side harmonic wave ability, including the power input powered for socket, it is characterized by: being additionally provided with the anti-harmonic wave module of mixed type for taking into account grid side and load-side in the socket, the input terminal of the anti-harmonic wave module of mixed type is connected in parallel with power input；The anti-harmonic wave module of mixed type includes for compensation harmonic and the PF unit of reactive component, for electrical isolation and transformer unit, the APF unit for avoiding APF by the overvoltage protective unit of the damage of overvoltage and for compensating to the harmonic component in load-side electric current of signal transmission isolation; the APF unit is connected by overvoltage protective unit and isolating transformer unit with PF unit, then parallel connection power supply input terminal again.The present invention can effectively eliminate the influence caused by electrical appliance of public electric wire net harmonic wave, and can prevent household electrical appliance or office equipment from causing to produce a large amount of harmonic wave in power grid, improve grid power quality.
Description
Technical field
The present invention relates to a kind of sockets, and in particular to a kind of socket with reactance net side and load-side harmonic wave ability belongs to
In technical field of electric equipment.
Background technique
Existing socket, if generally comprising supply output plughole on socket and defeated for the power supply of socket power supply
Enter end, can be powered by the socket for a variety of household electrical appliance or office equipment, as Authorization Notice No. is CN200950506Y
A kind of socket disclosed in patent document.Such socket has following defects that 1, does not have grid side filter function, cannot effectively prevent
Only public electric wire net harmonic wave is influenced caused by electrical appliance.2, do not have load-side filter function, household electrical appliance cannot be prevented or done
It postulates for causing to produce a large amount of harmonic wave in power grid, so that grid power quality is decreased obviously.
Summary of the invention
In view of the deficienciess of the prior art, it is an object of the present invention to provide one kind to have reactance net side and load-side harmonic wave energy
The socket of power can effectively eliminate the influence caused by electrical appliance of public electric wire net harmonic wave, and can prevent household electrical appliance or office from setting
It is standby to cause to produce a large amount of harmonic wave in power grid, improve grid power quality.
To achieve the goals above, the present invention is to realize by the following technical solutions:
A kind of socket with reactance net side and load-side harmonic wave ability of the invention, the power supply including powering for socket are defeated
Enter end, it is characterised in that: the anti-harmonic wave module of mixed type for taking into account grid side and load-side, the mixing are additionally provided in the socket
The input terminal of the anti-harmonic wave module of type is connected in parallel with power input；
The anti-harmonic wave module of mixed type include for compensation harmonic and the PF unit of reactive component, for electrical isolation and
Signal transmits the transformer unit of isolation, for avoiding APF by the overvoltage protective unit of the damage of overvoltage and for negative
The APF unit that the harmonic component in the electric current of side compensates is carried, the APF unit passes through overvoltage protective unit and isolation transformation
Device unit is connected with PF unit, then parallel connection power supply input terminal again.
Above-mentioned PF unit is made of several groups single tuned filter and one group of high-pass filter, the single tuned filter by
Capacitor, reactor and resistance are composed in series, and the high-pass filter is by parallel with reactor group after capacitor and resistance series connection
It is combined into.
Above-mentioned single tuned filter parameter are as follows:
In formula, Ci、Li、RiThe respectively capacitor of single tuned filter, reactor and resistance, U1For the width of network voltage
Value, ω1For the angular frequency of network voltage, I1ωFor filter condenser, CiFundamental reactive current；QoptMost for single tuned filter
Good merchantable brand prime factor.
Above-mentioned high-pass filter parameter are as follows:
In formula, Cn+1、Ln+1、Rn+1The respectively capacitor of high-pass filter, reactor and resistance, ω1For network voltage
Angular frequency, U1For the amplitude of network voltage, IjωFor j subharmonic reactive current, f0For cutoff frequency, m is filter tuner curve
Form parameter.
Above-mentioned overvoltage protective unit is varistor.
Above-mentioned APF unit includes main circuit, current detection circuit and PWM generator, and the main circuit is bidirectional power biography
Defeated inverter circuit, PWM generator are the control circuit of inverter circuit, and current detection circuit is humorous in load current for detecting
Wave component and reactive current component.
Above-mentioned main circuit is voltage-type, and the DC side of the main circuit is provided with capacity cell；
DC bus capacitor are as follows:
Wherein, UdcFor rated direct voltage, W1Ceiling capacity pulsation；
Wherein, λ is parameter.
The present invention makees the switch of main circuit, relevant parameter using IGBT are as follows:
The grade of rated voltage and load current value of IGBT meets formula
UIGBT≈2Udc (11)
IIGBT≈2Ic (12)
Wherein, IcElectric current is compensated for maximum.
The anti-harmonic wave module of mixed type for taking into account grid side and load-side, the anti-harmonic wave mould of mixed type are equipped in socket of the invention
Block can prevent household electrical appliance or office equipment from causing in power grid for eliminating the influence caused by electrical appliance of public electric wire net harmonic wave
A large amount of harmonic wave is produced, the input terminal of the anti-harmonic wave module of mixed type is connected in parallel with power input；The present invention can be effectively
Eliminate public electric wire net harmonic wave influences caused by electrical appliance, and can prevent household electrical appliance or office equipment from causing to produce in power grid
A large amount of harmonic wave improves grid power quality.
Detailed description of the invention
Fig. 1 is the schematic diagram of socket of the present invention.
Fig. 2 is PF cell schematics.
Fig. 3 is isolating transformer cell schematics.
Fig. 4 is main circuit diagram.
Specific embodiment
To be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, below with reference to
Specific embodiment, the present invention is further explained.
As shown in Figs 1-4, a kind of socket with reactance net side and load-side harmonic wave ability, including the electricity being set on socket
Source output plughole and the power input powered for socket, the socket is interior to be equipped with the mixed type for taking into account grid side and load-side
The input terminal of anti-harmonic wave module, the anti-harmonic wave module of the mixed type is connected in parallel with power input.
The anti-harmonic wave module of mixed type includes PF unit, isolating transformer unit, overvoltage protective unit and APF unit, APF
Unit is connected by overvoltage protective unit and isolating transformer unit with PF unit, then parallel connection power supply input terminal again.Wherein:
(1) PF unit
As shown in Fig. 2, PF unit is made of several groups single tuned filter and one group of high-pass filter.Dull harmonic
Device is composed in series by capacitor, reactor and resistance, high-pass filter capacitor, reactor and resistance string and group is combined into.PF
Effect be mainly used to compensation harmonic and reactive component.
According to the overtone order to be filtered out, several groups single tuned filter group number and group high-pass filter are selected.Wherein, single
Tuned filter parameter are as follows:
In formula, U1For the amplitude of network voltage, ω1For the angular frequency of network voltage, I1ωFor filter condenser CiFundamental wave without
Function electric current；QoptFor the factor best in quality of single tuned filter, also known as optimal tuning acutance, 30~60 are generally taken.
High-pass filter parameter are as follows:
In formula, IjωFor j subharmonic reactive current, f0For cutoff frequency, m is the form parameter of filter tuner curve, one
As be 2~0.5.
(2) isolating transformer unit
As shown in figure 3, isolating transformer between APF and PF, plays a part of electrical isolation and signal transmission.
(3) overvoltage protective unit
Overvoltage protecting unit uses varistor, avoids APF unit by the damage of overvoltage.
(4) APF unit
APF unit includes main circuit, current detecting and PWM generator three parts.Main circuit is the inverse of bidirectional power transmission
Power transformation road can improve PF filtering characteristic, and inhibit the resonance between system and PF in some specific frequency.PWM is inverse
The control circuit on power transformation road, current detection circuit are the harmonic components and reactive current component detected in load current.PWM- master
Circuit plays the role of compensating the harmonic component in load-side electric current.
1) main circuit
Main circuit is the inversion generating device of active filter, can apply given trigger pulse to it, generates correspondence
Harmonic current, to power grid carry out harmonic compensation.Here main circuit is selected as voltage-type, is placed in DC side using capacity cell, together
Sample is also the energy-storage travelling wave tube as main circuit.Its structure is as follows, wherein DC bus capacitor are as follows:
Wherein, UdcFor rated direct voltage, W1Ceiling capacity pulsation, the value size compensation capacity required according to design
To determine.
Wherein, λ is mains ripple parameter, is taken as 0.01.
2) current detecting
The harmonic current detecting method of APF is existing big more and more using Digital Detecting Method, has based on fast Fourier
The detection method of transformation, harmonic wave rapid detection method based on Instantaneous Power Theory etc..In three-phase system, using instantaneous reactive
Theoretical detection method is relatively convenient, therefore the present invention uses the detection method of Instantaneous Power Theory.
3) PWM generator
Main circuit during the work time, needs real-time control to switch on-off, and need to select full-controlled switch device.According to benefit
The difference of capacity is repaid, the selection of switching device is also different.Large capacity generally uses gate level turn-off thyristor GTO, since GTO is opened
It is lower to close frequency, is generally applied in inverter circuit using multiple technology.For in, the inversion of the active filter of low capacity
Main circuit generally selects IGBT.Not only switching frequency is relatively high by IGBT, but also can effectively track higher hamonic wave.The present invention
Socket applications place is in the common building of life and work, therefore the capacity of active filter is generally several hundred kVA, and maximum is mended
Repay the small 1kA of electric current, rated operational voltage 380V.Therefore, the present invention selects IGBT to make the switch of inverter main circuit.Its correlation ginseng
Number are as follows:
The grade of rated voltage and load current value of IGBT meets formula
UIGBT≈2Udc (11)
IIGBT≈2Ic (12)
Wherein, IcElectric current is compensated for maximum.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (8)
1. a kind of socket with reactance net side and load-side harmonic wave ability, special including the power input powered for socket
Sign is: the anti-harmonic wave module of mixed type for taking into account grid side and load-side, the anti-harmonic wave of mixed type are additionally provided in the socket
The input terminal of module is connected in parallel with power input；
The anti-harmonic wave module of mixed type includes for compensation harmonic and the PF unit of reactive component, for electrical isolation and signal
Transmit the transformer unit of isolation, for avoiding APF by the overvoltage protective unit of the damage of overvoltage and for load-side
The APF unit that harmonic component in electric current compensates, the APF unit pass through overvoltage protective unit and isolating transformer list
Member is connected with PF unit, then parallel connection power supply input terminal again.
2. the socket according to claim 1 with reactance net side and load-side harmonic wave ability, it is characterised in that: the PF
Unit is made of several groups single tuned filter and one group of high-pass filter, and the single tuned filter is by capacitor, reactor
It is composed in series with resistance, the high-pass filter forms after being connected by capacitor and resistance with reactor parallel combination.
3. the socket according to claim 2 with reactance net side and load-side harmonic wave ability, it is characterised in that: the list
Tuned filter parameter are as follows:
In formula, Ci、Li、RiThe respectively capacitor of single tuned filter, reactor and resistance, U1For the amplitude of network voltage, ω1
For the angular frequency of network voltage, I1ωFor filter condenser, CiFundamental reactive current；QoptFor the best in quality of single tuned filter
Factor.
4. the socket according to claim 3 with reactance net side and load-side harmonic wave ability, it is characterised in that: the height
Bandpass filter parameter are as follows:
In formula, Cn+1、Ln+1、Rn+1The respectively capacitor of high-pass filter, reactor and resistance, ω1For the angular frequency of network voltage
Rate, U1For the amplitude of network voltage, IjωFor j subharmonic reactive current, f0For cutoff frequency, m is the shape of filter tuner curve
Shape parameter.
5. the socket according to claim 1 with reactance net side and load-side harmonic wave ability, it is characterised in that: the mistake
Voltage protection unit is varistor.
6. the socket according to claim 1 with reactance net side and load-side harmonic wave ability, it is characterised in that: described
APF unit includes main circuit, current detection circuit and PWM generator, and the main circuit is the inverter circuit of bidirectional power transmission,
PWM generator is the control circuit of inverter circuit, and current detection circuit is used to detect harmonic component in load current and idle
Current component.
7. the socket according to claim 6 with reactance net side and load-side harmonic wave ability, it is characterised in that: the master
Circuit is voltage-type, and the DC side of the main circuit is provided with capacity cell；
DC bus capacitor are as follows:
Wherein, UdcFor rated direct voltage, W1Ceiling capacity pulsation；
Wherein, λ is mains ripple parameter.
8. the socket according to claim 7 with reactance net side and load-side harmonic wave ability, it is characterised in that: use
IGBT makees the switch of main circuit, relevant parameter are as follows:
The grade of rated voltage and load current value of IGBT meets formula
UIGBT≈2Udc (11)
IIGBT≈2Ic (12)
Wherein, IcElectric current is compensated for maximum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910742090.4A CN110380417A (en) | 2019-08-13 | 2019-08-13 | A kind of socket with reactance net side and load-side harmonic wave ability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910742090.4A CN110380417A (en) | 2019-08-13 | 2019-08-13 | A kind of socket with reactance net side and load-side harmonic wave ability |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110380417A true CN110380417A (en) | 2019-10-25 |
Family
ID=68258821
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910742090.4A Pending CN110380417A (en) | 2019-08-13 | 2019-08-13 | A kind of socket with reactance net side and load-side harmonic wave ability |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110380417A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1710771A (en) * | 2005-07-08 | 2005-12-21 | 湖南大学 | Resonant-impedance type hybrid active electric filter and control method thereof |
| CN2796213Y (en) * | 2005-05-27 | 2006-07-12 | 湖南大学 | Mixed high power active power filter |
| JP2014050230A (en) * | 2012-08-31 | 2014-03-17 | Denso Corp | Power conversion system |
-
2019
- 2019-08-13 CN CN201910742090.4A patent/CN110380417A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2796213Y (en) * | 2005-05-27 | 2006-07-12 | 湖南大学 | Mixed high power active power filter |
| CN1710771A (en) * | 2005-07-08 | 2005-12-21 | 湖南大学 | Resonant-impedance type hybrid active electric filter and control method thereof |
| JP2014050230A (en) * | 2012-08-31 | 2014-03-17 | Denso Corp | Power conversion system |
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| PB01 | Publication | ||
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Application publication date: 20191025 |