CN106856325A - 400V low-voltage electric energy quality optimization external hanging devices - Google Patents
400V low-voltage electric energy quality optimization external hanging devices Download PDFInfo
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- CN106856325A CN106856325A CN201510906546.8A CN201510906546A CN106856325A CN 106856325 A CN106856325 A CN 106856325A CN 201510906546 A CN201510906546 A CN 201510906546A CN 106856325 A CN106856325 A CN 106856325A
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- circuit
- external hanging
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- main circuit
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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
-
- 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
-
- 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
- Y02E40/50—Arrangements for eliminating or reducing asymmetry in polyphase networks
Abstract
The present invention relates to a kind of 400V low-voltage electric energies quality optimization external hanging device, including the main circuit for detecting the quality of power supply and compensation harmonic and reactive current, and the control circuit for controlling main circuit to work, the control circuit is connected with main circuit, external hanging device also includes casing, main circuit and control circuit are placed in casing, and the connection between main circuit and AC power and load, and casing is fixed on the housing of load by sucker or buckle.Compared with prior art, the present invention realizes being fixed to external hanging device on the housing of load by casing, easily electric energy quality optimizing can be carried out for a certain electrical equipment, without changing the electrical equipment, common television set is become intelligent TV set by its effect similar to by internet box, improvement cost can be reduced while suitable for single electrical equipment, while avoiding the dependence for providing high-quality power supply for distribution enterprise.
Description
Technical field
It is plug-in more particularly, to a kind of 400V low-voltage electric energies quality optimization the present invention relates to electric energy quality optimizing field
Device.
Background technology
The good and bad meeting of the quality of power supply largely influences the life-span of electrical equipment, and power transmission and distribution enterprise is devoted to always
The quality of power supply is improved, but the high-quality electricity consumption that power transmission and distribution enterprise provides is often expensive, thus much electricity consumption sets
The service enterprise of standby and power industry also designing all kinds of electric energy quality optimizing schemes, wherein, Chinese patent
201010158938.8 disclose a kind of Fieldbus Based electric energy quality optimization method, and the method is examined by electricity
Survey device carries out real-time detection to the electricity of electricity system, and electrical parameter is transferred into electric energy matter by industrial local network
Amount optimal controller, makes control decision, then realize electricity by industrial local network by electric energy quality optimizing controller
Energy quality optimization controller is controlled to dsm controller, and dsm controller carries out electricity consumption to corresponding electricity system
Optimal control.The method has preferable effect of optimization to large-scale electricity system, but only needs to one at that time
When individual electrical equipment is optimized, it has high cost, and the defect of large volume now, just there is some electrical equipments
Manufacturer by the way of the built-in electric energy quality optimizing module in electrical equipment, but, this need change electricity consumption set
Standby, one is split into this greatly, and the resource that the replacing of two part electrical equipments is involved is too many, very inconvenient.
The content of the invention
The purpose of the present invention is exactly to provide a kind of 400V low pressure for the defect for overcoming above-mentioned prior art to exist
Electric energy quality optimizing external hanging device.
The purpose of the present invention can be achieved through the following technical solutions：
A kind of 400V low-voltage electric energies quality optimization external hanging device, including for detect the quality of power supply and compensation harmonic and
The main circuit of reactive current, and the control circuit for controlling main circuit to work, the control circuit and the main electricity
Road is connected, and the external hanging device also includes casing, and the main circuit and control circuit are placed in the casing, and
Connection between main circuit and AC power and load, the casing is fixed on load by sucker or buckle
On housing.
The main circuit includes：
Power Quality Detection branch road, one end is connected with control circuit, and the other end is connected to from AC power to load
Between circuit on, for detecting the harmonic and reactive currents between AC power to load on circuit；
Compensation branch road, at least provided with one, and all compensation branch roads are connected between AC power to load
On circuit, for exporting harmonic wave or the reactive current opposite with loading.
All compensation branch roads are inverter circuit.
The main circuit also includes DC bus capacitor, and one end of the DC bus capacitor is connected with dc source, another
End is connected with all compensation branch roads.
The inverter circuit is two level inverter circuits, three-level inverter circuit, high-frequency model inverter circuit or low frequency
Two level inverter circuits.
The Power Quality Detection branch road be respectively connecting to it is described from AC power to loaded line on power end and
Load end.
Compared with prior art, the present invention has advantages below：
1) realize being fixed to external hanging device on the housing of load by casing, can easily be directed to a certain electricity consumption
Equipment carries out electric energy quality optimizing, and without changing the electrical equipment, its effect is similar to by internet box
Common television set is become into intelligent TV set, can reduce being transformed into while suitable for single electrical equipment
This, while avoiding the dependence for providing high-quality power supply for distribution enterprise.
2) by the power quality compensation demand for compensating the setting number of branch road to tackle different, flexibility ratio is big.
3) all compensation branch roads are inverter circuit, seek unity of standard, and device for harmonic is compensated and reactive-load compensation, is reduced
Maintenance cost.
4) each inversion unit shares same DC bus capacitor, and cost is reduced while improving plant capacity density.
5) inverter circuit is two level inverter circuits, three-level inverter circuit, high-frequency model inverter circuit or low frequency
Two level inverter circuits, can respectively for compensation larger capacity low-order harmonic, compensation intermediate size 25,
The situation design of 33 grade subharmonic, the higher hamonic wave of compensation low capacity and voltage support function.
Brief description of the drawings
Fig. 1 is structural representation of the invention；
Fig. 2 is the schematic diagram of installment state of the invention；
Fig. 3 is the schematic diagram of common DC lateral capacitance；
Wherein：1st, Power Quality Detection branch road, 2, control circuit, 3, compensation branch road, 4, load, 5, machine
Shell, 6, DC bus capacitor.
Specific embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.The present embodiment is with the technology of the present invention side
Implemented premised on case, given detailed implementation method and specific operating process, but protection model of the invention
Enclose and be not limited to following embodiments.
A kind of 400V low-voltage electric energies quality optimization external hanging device, as depicted in figs. 1 and 2, it uses low voltage screen cabinet
The mode of formula is arranged in electrical equipment and load 4, including for detecting the quality of power supply and compensation harmonic and idle electricity
The main circuit of stream, and the control circuit 2 for controlling main circuit to work, the control circuit 2 are connected with main circuit,
External hanging device also includes casing 5, and main circuit and control circuit are placed in casing 5, and main circuit and AC power
And the connection between 4 is loaded, casing 5 is fixed on the housing of load 4 by sucker or buckle；With active
Mode be connected to the grid, exported by inversion and load 4 opposite harmonic waves, reactive current and (hand over suppressing power network
Stream power supply) power quality problem.
Realize being fixed to external hanging device on the housing of load 4 by casing 5, can easily be directed to a certain electricity consumption
Equipment carries out electric energy quality optimizing, and without changing the electrical equipment, its effect is similar to by internet box
Common television set is become into intelligent TV set, can reduce being transformed into while suitable for single electrical equipment
This, while avoiding the dependence for providing high-quality power supply for distribution enterprise.
Main circuit includes：
Power Quality Detection branch road 1, one end is connected with control circuit 2, and the other end is connected to from AC power to negative
On circuit between load, for detecting the harmonic and reactive currents between AC power to load on circuit, specifically
, Power Quality Detection branch road 1 is respectively connecting to power end and load end on from AC power to loaded line；
Compensation branch road 3, at least provided with one, and all compensation branch roads 3 are connected to from AC power to load
Between circuit on, for exporting harmonic wave or the reactive current opposite with loading 4.
All compensation branch roads 3 are inverter circuit.
As shown in figure 3, main circuit also includes DC bus capacitor 6, one end and the dc source of DC bus capacitor 6 connect
Connect, the other end is connected with all compensation branch roads 3.
Inverter circuit is the two of two level inverter circuits, three-level inverter circuit, high-frequency model inverter circuit or low frequency
Level inverter circuit.
The configuration process for compensating branch road 3 is specifically divided into two steps：
One is that the first capacity for compensating as needed and harmonic wave type determine inverter circuit using various circuits, such as table 1
It is shown,
Table 1
| Compensation demand | Using inversion unit |
| Compensate the low-order harmonic of larger capacity | Two level inverter circuits |
| Compensate the subharmonic such as 25,33 of intermediate size | Three-level inverter circuit |
| Compensate the higher hamonic wave of low capacity | High-frequency model inverter circuit |
| Voltage support function | Two level inverter circuits of low frequency |
Two is that, according to power quality compensation increase in demand or reduction inverter circuit, each inversion unit shares same DC side
Electric capacity, cost is reduced while improving plant capacity density.
Additionally, entered further design, according to by the compensation demand of compensation system, such as compensation capacity, compensation essence
Degree etc. provides different grades of main inversion unit circuit to meet the requirement of the aspects such as capacity, compensation precision.Can be used for
The essence benefit of 2-50 subharmonic, while voltage support, system voltage imbalance compensation function can be taken into account.
Claims (6)
1. a kind of 400V low-voltage electric energies quality optimization external hanging device, including for detecting the quality of power supply and compensating humorous
The main circuit of ripple and reactive current, and the control circuit (2) for controlling main circuit to work, the control circuit (2)
It is connected with the main circuit, it is characterised in that the external hanging device also includes casing (5), the main circuit and control
Circuit processed is placed in the casing (5), and the connection between main circuit and AC power and load (4),
The casing (5) is fixed on the housing of load (4) by sucker or buckle.
2. a kind of 400V low-voltage electric energies quality optimization external hanging device according to claim 1, its feature exists
In the main circuit includes：
Power Quality Detection branch road (1), one end is connected with control circuit (2), and the other end is connected to from alternating current
Source on the circuit between load, for detecting harmonic wave and idle electricity between AC power to load on circuit
Stream；
Compensation branch road (3), at least provided with one, and it is all compensation branch road (3) be connected to from AC power to
On circuit between load, for exporting harmonic wave or the reactive current opposite with (4) are loaded.
3. a kind of 400V low-voltage electric energies quality optimization external hanging device according to claim 2, its feature exists
In all compensation branch road (3) are inverter circuit.
4. a kind of 400V low-voltage electric energies quality optimization external hanging device according to claim 3, its feature exists
In the main circuit also includes DC bus capacitor (6), one end of the DC bus capacitor (6) and dc source
Connection, the other end is connected with all compensation branch road (3).
5. a kind of 400V low-voltage electric energies quality optimization external hanging device according to claim 3, its feature exists
In the inverter circuit is two level inverter circuits, three-level inverter circuit, high-frequency model inverter circuit or low frequency
Two level inverter circuits.
6. a kind of 400V low-voltage electric energies quality optimization external hanging device according to claim 2, its feature exists
In, the Power Quality Detection branch road (1) be respectively connecting to it is described from AC power to loaded line on power supply
End and load end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510906546.8A CN106856325A (en) | 2015-12-09 | 2015-12-09 | 400V low-voltage electric energy quality optimization external hanging devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510906546.8A CN106856325A (en) | 2015-12-09 | 2015-12-09 | 400V low-voltage electric energy quality optimization external hanging devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106856325A true CN106856325A (en) | 2017-06-16 |
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ID=59132139
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510906546.8A Pending CN106856325A (en) | 2015-12-09 | 2015-12-09 | 400V low-voltage electric energy quality optimization external hanging devices |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113765222A (en) * | 2021-09-07 | 2021-12-07 | 广东鑫钻节能科技股份有限公司 | System and method for improving electric energy quality for air compression station |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01222318A (en) * | 1988-03-01 | 1989-09-05 | Nissin Electric Co Ltd | System for controlling inverter of reactive power compensation device |
| CN2901779Y (en) * | 2006-05-09 | 2007-05-16 | 何兆基 | Conveniently detachable lamp power source box |
| CN102082439A (en) * | 2011-01-25 | 2011-06-01 | 深圳市华冠电气有限公司 | Method and device for optimizing quality of electric energy |
| CN205335845U (en) * | 2015-12-09 | 2016-06-22 | 利思电气（上海）有限公司 | 400V low pressure electric energy quality optimization joins externally device |
-
2015
- 2015-12-09 CN CN201510906546.8A patent/CN106856325A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01222318A (en) * | 1988-03-01 | 1989-09-05 | Nissin Electric Co Ltd | System for controlling inverter of reactive power compensation device |
| CN2901779Y (en) * | 2006-05-09 | 2007-05-16 | 何兆基 | Conveniently detachable lamp power source box |
| CN102082439A (en) * | 2011-01-25 | 2011-06-01 | 深圳市华冠电气有限公司 | Method and device for optimizing quality of electric energy |
| CN205335845U (en) * | 2015-12-09 | 2016-06-22 | 利思电气（上海）有限公司 | 400V low pressure electric energy quality optimization joins externally device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113765222A (en) * | 2021-09-07 | 2021-12-07 | 广东鑫钻节能科技股份有限公司 | System and method for improving electric energy quality for air compression station |
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Application publication date: 20170616 |
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