CN206379726U - Power Quality Comprehensive Treatment Device - Google Patents
Power Quality Comprehensive Treatment Device Download PDFInfo
- Publication number
- CN206379726U CN206379726U CN201621314414.2U CN201621314414U CN206379726U CN 206379726 U CN206379726 U CN 206379726U CN 201621314414 U CN201621314414 U CN 201621314414U CN 206379726 U CN206379726 U CN 206379726U
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- Prior art keywords
- compensation unit
- treatment device
- comprehensive treatment
- power quality
- quality comprehensive
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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
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- Inverter Devices (AREA)
Abstract
The utility model provides a kind of Power Quality Comprehensive Treatment Device, and the present apparatus is accessed between three-phase four-wire system power supply and load；The present apparatus includes left side series compensation unit, right side parallel compensation unit, left side series compensation unit, right side parallel compensation unit composition topological structure；Left side series compensation unit includes a series converter, and right side parallel compensation unit includes a parallel converters, and parallel converters are in series converter downstream.Power Quality Comprehensive Treatment Device described in the utility model, can suppress current harmonics, and the fluctuation of energy offset voltage and reactive current, realize power network and isolating for loading, whether there is power quality problem in load or power network, can preferably compensate, not result in and interact.
Description
Technical field
The utility model is related to field of power electronics, power network controller switching equipment field, relates in particular to a kind of quality of power supply
Comprehensive treatment device.
Background technology
Power Quality Comprehensive Treatment Device, based on Power Electronic Technique, is combined as a kind of comprehensive controlling device
Effect and feature of Most current voltage or current compensator：When supply voltage is fluctuated, comprehensive power quality is controlled
The difference between device detection reference voltage and practical power voltage is managed, by injecting a voltage opposite with detection difference
Offset therewith, to keep load terminal voltage as the sinusoidal voltage of standard；Equally when Power Quality Comprehensive Treatment Device is detected
Harmonic wave, the idle composition contained in load current, the opposite to that electric current by injecting, so as to ensure source current for standard just
String ripple, suppresses pollution of the distortion current of nonlinear load generation to power network.Current harmonics can be suppressed, and can offset voltage ripple
Dynamic and reactive current, realizes isolating for power network and load, whether loads or power quality problem occurs in power network, can be compared with
Good compensates, and does not result in and interacts.
Utility model content
Technical problem to be solved in the utility model is that overcoming problems of the prior art, there is provided a kind of electricity
Can comprehensive quality control device.
In order to which the technical solution of the utility model that solves the above problems is such：
Power Quality Comprehensive Treatment Device, the present apparatus is accessed between three-phase four-wire system power supply and load；The present apparatus includes
Left side series compensation unit, right side parallel compensation unit, left side series compensation unit, right side parallel compensation unit composition topology knot
Structure；Left side series compensation unit includes a series converter, and right side parallel compensation unit includes a parallel converters, unsteady flow in parallel
Device is in series converter downstream.
Left side series unit is provided with a high-frequency PWM control module, and power network input current is balanced sinusoidal currents, and power network is defeated
It is 1 to enter power factor.
Right side parallel units are provided with a high-frequency PWM control module, and load end exports balance, specified sine voltage,
Output voltage and the same phase of power network input voltage.
The frequency of high-frequency PWM control module is 12.8kHz.
Left side series compensation unit, right side parallel compensation unit are each provided with PI controllers.
The present apparatus protects module provided with excessively stream, when output current peak value is less than IGBT rated current, sends shut-off IGBT
Signal, turn off IGBT；It is more than IGBT rated current for output current peak value, then keeps the pulse signal that sets out, jumps simultaneously
Lock is protected.
The present apparatus is provided with radiating tube, and operating ambient temperature range is：- 20~45 degrees Celsius.
The three-phase four-wire system power supply, voltage is 380V ± 20%, and capacity is 40kVA, and voltage regulation limits are ± 8%,
Reactive-load compensation >=0.98, harmonic compensation rate>95%, switching frequency is 12.8kHz, unit efficiency >=96%.
Beneficial effect：Power Quality Comprehensive Treatment Device described in the utility model, can suppress current harmonics, and can mend
Voltage pulsation and reactive current are repaid, power network and isolating for loading is realized, whether load or power network the quality of power supply occur and asked
Topic, can preferably compensate, not result in and interact.Power Quality Comprehensive Treatment Device described in the utility model is also
The harmonic distortion of power network terminal voltage can be eliminated, voltage is raised and lowered, the problems such as three-phase imbalance, so that load voltage
Sine, symmetrical and balance；The reactive current of load is compensated, harmonic current can strengthen the transmittability of power network, play existing electricity
The load-bearing capacity of net.
Brief description of the drawings
Describe the utility model in detail with reference to the accompanying drawings and detailed description；
Fig. 1 is Power Quality Comprehensive Treatment Device topology diagram described in the utility model.
Fig. 2 is Power Quality Comprehensive Treatment Device control principle drawing described in the utility model.
Fig. 3 is Power Quality Comprehensive Treatment Device wiring diagram described in the utility model.
Embodiment
In order that technological means, creation characteristic, reached purpose and effect that the utility model is realized are easy to understand, under
Face combines and is specifically illustrating, and the utility model is expanded on further.
Explanation of nouns：
ZDUPQC：Power Quality Comprehensive Treatment Device；
PWM：Pulse width modulation, the break-make to inverter circuit switching device is controlled, and obtains output end a series of
The equal pulse of amplitude, for replacing required waveform；
IGBT:Insulated gate bipolar transistor, is by BJT (double pole triode) and MOS (insulating gate type field effect tube)
The compound full-control type voltage driven type power semiconductor of composition, has the low conducting of MOSFET high input impedance and GTR concurrently
Advantage of both pressure drop；
PI controllers：A kind of linear controller, it constitutes control deviation according to set-point and real output value, by deviation
Ratio (P) and integration (I) constitute controlled quentity controlled variable by linear combination, and controlled device is controlled；
Three-level soft switch：It is real using the junction capacity of switching tube and the resonance of transformer leakage inductance using Phase Shift Control Study
The ZVT of existing switching tube.The discharge and recharge of power switch pipe two ends output capacitance is made by the energy storage of high frequency transformer leakage inductance
Switching tube both end voltage drops to zero, converter switches pipe is turned on successively under no-voltage, zero electricity under buffering electric capacity effect
Pressure shut-off, so as to significantly reduce the switching loss and switching noise of circuit, efficiency improves notable.
A kind of Power Quality Comprehensive Treatment Device-ZDUPQC based on Power Electronic Technique.Device is had public by two
AC and DC two-way switch, the PWM converter composition of dc bus, one of current transformer and power network are in parallel, and another passes through string
Joining transformer will export in series between insertion power supply and load.Device detects line voltage and load current, passes through meter
Calculation obtains voltage compensation quantity and load harmonic, and idle and out-of-balance current compensation rate makes series converter complete voltage compensation, and
Join cocurrent device and complete idle, harmonic wave and active imbalance compensation.
Further, referring to Fig. 1, Fig. 2, Fig. 3,
A kind of Power Quality Comprehensive Treatment Device, is made up of series compensation unit, parallel compensation unit and direct current component.Dress
The series, parallel unit put can cooperation realize comprehensive function, independent operating realizes respective function after can also decoupling.
The present apparatus can make series compensation unit will not be by supply voltage ripple using left series connection and topological structure in parallel
While the interference of dynamic and voltage harmonic, moreover it is possible to greatly reduce the capacity of series converter.Meanwhile, series converter flows only through negative
Current-carrying active component, not comprising harmonic and reactive currents, can so greatly reduce the capacity of series converter.
When supply voltage is fluctuated, the difference between device detection reference voltage and practical power voltage passes through string
Connection transformer injects a voltage opposite with detection difference and offseted therewith, to keep load terminal voltage as the sine of standard
Voltage；Load end is equally directed to, device detects harmonic wave, the idle composition contained in load current, noted by parallel converters
Enter opposite to that electric current, so as to ensure that source current is standard sine wave.
Parallel units use high-frequency PWM control technology, and balance, specified sine voltage is provided in load end, and
With the same phase of power network input voltage；Series unit also uses high-frequency PWM control technology so that power network input current is the sine of balance
Ripple electric current, and make power network input power factor be 1.The PWM switching frequencies of current transformer are 12.8kHz, and switching frequency harmonic wave is easy
Filtered out in for low pass filter, so that the harmonic wave of low frequency to switching frequency is reduced to negligible degree.
Device uses three-level soft switch technology, significantly improves the dynamic responding speed of whole device；It is simple in construction, it is easy to
Install and debug；Switching loss and conduction loss are all smaller, are favorably improved the energy conversion efficiency of system.
Connection in series-parallel current transformer in device realizes data interaction by intercommunication, while each completing control work, respectively
From by PI controllers, according to track with zero error principle, produce determine frequency pwm pulse driving inverter power pipe IGBT conducting with
Shut-off.The control program can obtain stablizing quick current control effect, at the same can also be correspondingly improved system power because
Number.
The present apparatus has overcurrent protection function：It is less than IGBT rated current for output current peak value, only needs quick
Detect the size of current signal and send shut-off IGBT signal, IGBT can be effectively turned off；For output current peak value
More than IGBT rated current, shut-off IGBT is easily caused IGBT damages, then keeps the pulse signal that sets out, while tripping to protect.
Both overcurrent can be protected with the fastp-acting fuse of simultaneously net side simultaneously.For bridge arm direct pass problem, using return door
Pole pulse condition interlocking techniques and soft switching technology, it is ensured that the safety of system and the safety of commutation components.
The high-power switch device that device is used is 1200V/150A IGBT, and it uses the soft level block of penetration three,
Can stable operation in 20kHz.
Device main circuit uses hard switching commutation technique, and maximum output dutycycle is 95%.
Device uses heat pipe heat radiation, than typically leaning on fin good heat dissipation effect completely, and small volume is noiseless, is applicable to
Temperature is -10 DEG C~45 DEG C environment.
The input mode of device is three-phase four-wire system, and voltage is 380V ± 20%, and capacity is 40kVA, voltage-regulation model
Enclose for ± 8%, reactive-load compensation >=0.98, harmonic compensation rate>95%, switching frequency is 12.8kHz, unit efficiency >=96%.
The course of work is as follows, present apparatus detection line voltage and load current, and voltage compensation quantity is obtained and negative by calculating
Harmonic wave is carried, idle and out-of-balance current compensation rate makes series converter complete voltage compensation, cocurrent device in parallel completes idle, humorous
Ripple and active imbalance compensation.Connection in series-parallel current transformer realizes data interaction by intercommunication, while each completing control work
Make, each via PI controllers, according to track with zero error principle, produce and determine frequency pwm pulse driving inverter power pipe IGBT's
Turn-on and turn-off.
General principle of the present utility model, principal character and advantage of the present utility model has been shown and described above.One's own profession
The technical staff of industry is it should be appreciated that the utility model is not restricted to the described embodiments, described in above-described embodiment and specification
Simply illustrate principle of the present utility model, the utility model can also on the premise of the utility model spirit and scope are not departed from
There are various changes and modifications, these changes and improvements are both fallen within the range of claimed the utility model.The utility model is special
The claimed scope of profit is defined by appended claims and its equivalent.
Claims (8)
1. Power Quality Comprehensive Treatment Device, the present apparatus is accessed between three-phase four-wire system power supply and load；It is characterized in that, this dress
Put including left side series compensation unit, right side parallel compensation unit, left side series compensation unit, right side parallel compensation unit composition
Topological structure；Left side series compensation unit includes a series converter, and right side parallel compensation unit includes a parallel converters, and
Join current transformer and be in series converter downstream.
2. Power Quality Comprehensive Treatment Device according to claim 1, it is characterized in that, left side series unit is provided with a high frequency
PWM control modules, power network input current is balanced sinusoidal currents, and power network input power factor is 1.
3. Power Quality Comprehensive Treatment Device according to claim 1, it is characterized in that, right side parallel units are provided with a high frequency
PWM control modules, load end output balance, specified sine voltage, output voltage and the same phase of power network input voltage.
4. the Power Quality Comprehensive Treatment Device according to Claims 2 or 3, it is characterized in that, the frequency of high-frequency PWM control module
Rate is 12.8kHz.
5. Power Quality Comprehensive Treatment Device according to claim 1, it is characterized in that, left side series compensation unit, right side
Parallel compensation unit is each provided with PI controllers.
6. Power Quality Comprehensive Treatment Device according to claim 1, it is characterized in that, the present apparatus protects module provided with excessively stream,
When output current peak value is less than IGBT rated current, shut-off IGBT signal is sent, IGBT is turned off；For output current peak
Value then keeps the pulse signal that sets out more than IGBT rated current, while tripping to protect.
7. Power Quality Comprehensive Treatment Device according to claim 1, it is characterized in that, the present apparatus is provided with radiating tube, work
Ambient temperature range is：- 20~45 degrees Celsius.
8. Power Quality Comprehensive Treatment Device according to claim 1, it is characterized in that, the three-phase four-wire system power supply, electricity
Press as 380V ± 20%, capacity is 40kVA, voltage regulation limits are ± 8%, reactive-load compensation >=0.98, harmonic compensation rate>
95%, switching frequency is 12.8kHz, unit efficiency >=96%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621314414.2U CN206379726U (en) | 2016-12-02 | 2016-12-02 | Power Quality Comprehensive Treatment Device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621314414.2U CN206379726U (en) | 2016-12-02 | 2016-12-02 | Power Quality Comprehensive Treatment Device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206379726U true CN206379726U (en) | 2017-08-04 |
Family
ID=59405240
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621314414.2U Active CN206379726U (en) | 2016-12-02 | 2016-12-02 | Power Quality Comprehensive Treatment Device |
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| Country | Link |
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| CN (1) | CN206379726U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108306317A (en) * | 2018-05-02 | 2018-07-20 | 南京赫曦电气有限公司 | A kind of power distribution network transformer electric energy quality synthesis compensation apparatus and its method |
| CN110148954A (en) * | 2019-05-24 | 2019-08-20 | 青岛大学 | A kind of distribution network control method based on SOP |
| CN110794231A (en) * | 2019-10-25 | 2020-02-14 | 上海电气集团股份有限公司 | High-low voltage ride through test device for wind power pitch system |
| CN117318126A (en) * | 2023-11-30 | 2023-12-29 | 山东华天电气有限公司 | Micro-grid power quality optimization and energy storage integrated device and control method |
-
2016
- 2016-12-02 CN CN201621314414.2U patent/CN206379726U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108306317A (en) * | 2018-05-02 | 2018-07-20 | 南京赫曦电气有限公司 | A kind of power distribution network transformer electric energy quality synthesis compensation apparatus and its method |
| CN110148954A (en) * | 2019-05-24 | 2019-08-20 | 青岛大学 | A kind of distribution network control method based on SOP |
| CN110148954B (en) * | 2019-05-24 | 2023-05-26 | 青岛大学 | SOP-based power distribution network control method |
| CN110794231A (en) * | 2019-10-25 | 2020-02-14 | 上海电气集团股份有限公司 | High-low voltage ride through test device for wind power pitch system |
| CN117318126A (en) * | 2023-11-30 | 2023-12-29 | 山东华天电气有限公司 | Micro-grid power quality optimization and energy storage integrated device and control method |
| CN117318126B (en) * | 2023-11-30 | 2024-02-27 | 山东华天电气有限公司 | Micro-grid power quality optimization and energy storage integrated device and control method |
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