CN206908302U - Active electric power out-of-balance current compensation device - Google Patents
Active electric power out-of-balance current compensation device Download PDFInfo
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- CN206908302U CN206908302U CN201720713847.3U CN201720713847U CN206908302U CN 206908302 U CN206908302 U CN 206908302U CN 201720713847 U CN201720713847 U CN 201720713847U CN 206908302 U CN206908302 U CN 206908302U
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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
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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
- Y02E40/50—Arrangements for eliminating or reducing asymmetry in polyphase networks
Abstract
It the utility model is related to a kind of active electric power out-of-balance current compensation device, including signal acquisition module, Signal-regulated kinase, digital signal processing module, IGBT drive module and converter module, the three-phase current signal of signal acquisition module collection load-side and the three-phase voltage signal of power network power supply, Signal-regulated kinase is connected with signal acquisition module to carry out analog-to-digital conversion to the voltage and current signal of collection, digital signal processing module includes the DSP module and FPGA module being connected with each other, DSP module obtains compensation current data in real time to calculate, FPGA module is used for control data and gathers and carry out output control according to the real-time compensation current data of calculating.Converter module produces compensation electric current with grid-connected output to power network under the driving of IGBT drive module.The digital signal processing module has the advantages that control accuracy height, fast response time, real-time tracking, compensation effect is good, regulating power is strong, influence by voltage is small.
Description
Technical field
It the utility model is related to a kind of active electric power out-of-balance current compensation device, and in particular to one kind can in real time dynamically
Compensation three-phase and four-line power network negative-sequence current, reactive current, zero-sequence current.System can be compensated rapidly caused by load
Out-of-balance current, reactive-load compensation is carried out within the scope of compensation ability to improve power factor, suppresses three-phase caused by load side
Out-of-balance current and neutral line current, ensure power system stability, efficient, high-quality operation.
Background technology
At present, because power electronic equipment is widely applied in life, such as：Friendship in electric welding machine, electric arc furnaces, industry is straight
Flow switch change-over device, particularly non-linear electrical equipment so that current imbalance problem is also serious all the more in power system.OK
More in industry to carry out unbalanced power supply compensation from Passively compensated circuit, passive compensator response speed is slow, and volume is big, can not be real-time
Follow load negative phase-sequence electric power variation, not can compensate for the zero-sequence current of three-phase four wire system, and resonance easily occurs.
Utility model content
Technical problem to be solved in the utility model is to provide one kind for above-mentioned prior art, can be in compensation system
While out-of-balance current, the parsing to System Reactive Power electric current is completed, real-Time Compensation reactive current, improve the power factor of system
Active electric power out-of-balance current compensation device.
Technical scheme is used by the utility model solves above-mentioned technical problem：A kind of active electric power out-of-balance current is mended
Repay device, it is characterised in that including：
Signal acquisition module, for gathering the three-phase current signal of load-side and the three-phase voltage signal of power network power supply；
Signal-regulated kinase, it is connected with the signal acquisition module, for the voltage and current signal of collection to be carried out
Analog-to-digital conversion；
Digital signal processing module, include the DSP module and FPGA module of interconnection, the DSP module, FPGA module
It is connected respectively with the Signal-regulated kinase, the DSP module is used to carry out the data of Signal-regulated kinase collection
Calculate to obtain compensation current data in real time, the FPGA module is for controlling the data acquisition of the Signal-regulated kinase simultaneously
The real-time compensation current data calculated according to DSP module carries out output control；
IGBT drive module, it is connected with the FPGA module；
Converter module, it is connected respectively with the FPGA module, IGBT drive module and power network, according to FPGA module
Control, compensation electric current is produced under the driving of the IGBT drive module with grid-connected output to power network.
As an improvement, also include fault diagnosis conditioning module, the fault diagnosis conditioning module respectively with the current transformer
Module, digital signal processing module are connected, and the current signal gathered from converter module is converted into data signal for institute
State DSP module and carry out fault diagnosis.
As an improvement, also include the human-computer interface module being connected with the digital signal processing module.
Realize and communicate with host computer for convenience, in addition to the communication mould being connected with the digital signal processing module
Block.
Preferably, the acquisition module includes being connected to load-side for gathering the electricity of the three-phase current signal of load-side
Flow sensor, the voltage sensor for being connected to the three-phase output voltage signal that power network supply side is powered for collection power network, divide
The frequency overlapped-resistable filter not being connected with the current sensor and voltage sensor, the frequency overlapped-resistable filter and the signal
Conditioning module is connected.
Preferably, the Signal-regulated kinase include be connected with each other wave filter and A/D sampling A/D chips, the wave filter with
The acquisition module is connected, and the A/D sampling A/D chips are connected with the digital signal processing module.
Preferably, the converter module includes IGBT module, LCL filter and alminium electrolytic condenser, the aluminium electroloysis electricity
Appearance be connected with the IGBT module, the IGBT module respectively with the IGBT drive module, FPGA module, LCL filter
It is connected, the LCL filter and the grid-connected connection of power network.
Compared with prior art, the utility model has the advantage of：Digital signal processing module in the utility model is same
Shi Caiyong DSP modules and FPGA module, the control of sampling and compensation electric current output is realized using FPGA module, utilizes DSP module
Data-handling capacity carry out data calculating, the parsing of the order components of complete twin installation load within the extremely short time, so control
Current transformer processed realizes the compensation of active electric power out-of-balance current, and accurately adjusting three-phase load while power factor is improved puts down
Weighing apparatus, there is control accuracy height, fast response time, real-time tracking, that compensation effect is good, regulating power is strong, influence by voltage is small etc. is excellent
Point.
Brief description of the drawings
Fig. 1 is the structured flowchart of active electric power out-of-balance current compensation device in the utility model embodiment.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing embodiment.
As shown in figure 1, the active electric power out-of-balance current compensation device in the present embodiment, including signal acquisition module 1, letter
Number conditioning module 2, digital signal processing module 3, IGBT drive module 4, converter module 5, fault diagnosis conditioning module 6, people
Machine interface module 7 and communication module 8.
Signal acquisition module 1 includes current sensor 11, voltage sensor 12, frequency overlapped-resistable filter 13, current sensor
11 be connected to load-side for gather load-side three-phase current signal, voltage sensor 12 be connected to the supply side of power network 9 with
For gathering the three-phase output voltage signal of the power supply of power network 9, frequency overlapped-resistable filter 13 passes with current sensor 11 and voltage respectively
Sensor 12 is connected, and frequency overlapped-resistable filter 13 is gathered with the current signal and voltage sensor 12 that are gathered to current sensor 11
Voltage signal is filtered processing, and the current signal and voltage signal handled after filtering is exported into Signal-regulated kinase 2.
Signal-regulated kinase 2 includes filter circuit 21 and model AD7606 A/D conversion chips 22, filter circuit 21 with
Frequency overlapped-resistable filter 13 is connected, the circuit 21 after filtering of the electric current and voltage signal after the processing of signal acquisition module 1
Output carries out analog-to-digital conversion into A/D conversion chips 22 after filtering, and then the analog signal of electric current, voltage is converted into digital letter
Number.
Digital signal processing module 3 includes the DSP module 31 and FPGA module 32 being connected with each other, DSP module 31 and FPGA
The high-speed transfer of data can be realized between module 32, wherein DSP module 31 uses model TMS320F28335PFFA DSP
Chip, FPGA module 32 use existing fpga chip, DSP module 31 and FPGA module 32 respectively with the phase of A/D conversion chips 22
Connection, FPGA module 32 control the data sampling of A/D conversion chips 22, and the data that dsp chip exports to A/D conversion chips 22 are entered
Row analysis and calculating, and then obtain various power quality parameters corresponding to compensation electric current, and being sent by control algolithm in real time
PWM comprising compensation electric current is into fpga chip.
IGBT drive module 4 is connected with FPGA module 32, and IGBT drive module 4 uses model in the present embodiment
SN7545B with door chip, the PWM that FPGA module 32 exports into IGBT drive module 4 can be entered by IGBT drive module 4
Row conditioning control.
Converter module 5 includes IGBT module 51, LCL filter 52 and alminium electrolytic condenser 53, alminium electrolytic condenser 53 with
IGBT module 51 is connected, and alminium electrolytic condenser 53 is used to realizing the charge and discharge electric treatment of IGBT module 51, IGBT module 51 respectively with
IGBT drive module 4, FPGA module 32, LCL filter 52 are connected, LCL filter 5253 and 9 grid-connected connection of power network.
Under the control of FPGA module 32, IGBT drive module 4 drives IGBT module 51 to be operated, so as to generate compensation electric current, compensation
Output is to power network 9 after filtering process of the electric current by LCL filter 52, so as to realize the compensation of the three phase unbalance current of power network 9.
Fault diagnosis conditioning module 6 is connected with converter module 5, digital signal processing module 3 respectively, will be adopted from converter module 5
The compensating current signal of collection is converted to data signal so that DSP module 31 carries out fault diagnosis.Fault diagnosis in the present embodiment
Conditioning module 6 uses model LM393 chip.
Human-computer interface module 7 is connected with digital signal processing module 3 respectively, the human-computer interface module 7 in the present embodiment
For touch-screen, control parameter, control command can be inputted into DSP module 31, FPGA module 32 by human-computer interface module 7,
Human-computer interface module 7 can be with the working condition of real-time display this active electric power out-of-balance current compensation device simultaneously.
Communication module 8 is connected with digital signal processing module 3, and the communication module 8 in the present embodiment can use wireless
Communication module, the telecommunication between the device and host computer, terminating machine can be realized by communication module 8, it is remote so as to realize
Range monitoring and data acquisition.
Claims (7)
- A kind of 1. active electric power out-of-balance current compensation device, it is characterised in that including：Signal acquisition module, for gathering the three-phase current signal of load-side and the three-phase voltage signal of power network power supply；Signal-regulated kinase, it is connected with the signal acquisition module, for the voltage and current signal of collection to be carried out into modulus Conversion；Digital signal processing module, include the DSP module and FPGA module of interconnection, the DSP module, FPGA module difference It is connected with the Signal-regulated kinase, the DSP module is used to calculate the data of Signal-regulated kinase collection To obtain compensation current data in real time, the FPGA module is used for data acquisition and the basis for controlling the Signal-regulated kinase The real-time compensation current data that DSP module calculates carries out output control；IGBT drive module, it is connected with the FPGA module；Converter module, it is connected respectively with the FPGA module, IGBT drive module and power network, according to the control of FPGA module System, compensation electric current is produced under the driving of the IGBT drive module with grid-connected output to power network.
- 2. active electric power out-of-balance current compensation device according to claim 1, it is characterised in that：Also include fault diagnosis Conditioning module, the fault diagnosis conditioning module are connected with the converter module, digital signal processing module respectively, will be certainly The compensating current signal of converter module collection is converted to data signal so that the DSP module carries out fault diagnosis.
- 3. active electric power out-of-balance current compensation device according to claim 1, it is characterised in that：Also include and the number The human-computer interface module that word signal processing module is connected.
- 4. active electric power out-of-balance current compensation device according to claim 1, it is characterised in that：Also include and the number The communication module that word signal processing module is connected.
- 5. the active electric power out-of-balance current compensation device according to Claims 1-4 any claim, its feature exist In：The acquisition module includes being connected to load-side for gathering the current sensor of the three-phase current signal of load-side, connecting Be connected on power network supply side for collection power network power supply three-phase output voltage signal voltage sensor, respectively with the electric current Frequency overlapped-resistable filter that sensor and voltage sensor are connected, the frequency overlapped-resistable filter are connected with the Signal-regulated kinase Connect.
- 6. the active electric power out-of-balance current compensation device according to Claims 1-4 any claim, its feature exist In：The Signal-regulated kinase includes wave filter and the A/D sampling A/D chips being connected with each other, the wave filter and the sampling module It is connected, the A/D sampling A/D chips are connected with the digital signal processing module.
- 7. the active electric power out-of-balance current compensation device according to Claims 1-4 any claim, its feature exist In：The converter module includes IGBT module, LCL filter and alminium electrolytic condenser, the alminium electrolytic condenser and the IGBT Module is connected, and the IGBT module is connected with the IGBT drive module, FPGA module, LCL filter respectively, described LCL filter and the grid-connected connection of power network.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720713847.3U CN206908302U (en) | 2017-06-19 | 2017-06-19 | Active electric power out-of-balance current compensation device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720713847.3U CN206908302U (en) | 2017-06-19 | 2017-06-19 | Active electric power out-of-balance current compensation device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109245118A (en) * | 2018-09-14 | 2019-01-18 | 漯河市宏力电器有限公司 | A kind of SVG control method |
| CN109301848A (en) * | 2018-11-13 | 2019-02-01 | 上海光维电力科技有限公司 | A kind of active three-phase imbalance self-checking device |
| CN109327032A (en) * | 2018-11-13 | 2019-02-12 | 上海光维电力科技有限公司 | A kind of active three-phase imbalance automatic control system |
| CN111934430A (en) * | 2020-08-07 | 2020-11-13 | 贵州电网有限责任公司 | Control system of active voltage quality adjusting device based on power electronics |
-
2017
- 2017-06-19 CN CN201720713847.3U patent/CN206908302U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109245118A (en) * | 2018-09-14 | 2019-01-18 | 漯河市宏力电器有限公司 | A kind of SVG control method |
| CN109301848A (en) * | 2018-11-13 | 2019-02-01 | 上海光维电力科技有限公司 | A kind of active three-phase imbalance self-checking device |
| CN109327032A (en) * | 2018-11-13 | 2019-02-12 | 上海光维电力科技有限公司 | A kind of active three-phase imbalance automatic control system |
| CN111934430A (en) * | 2020-08-07 | 2020-11-13 | 贵州电网有限责任公司 | Control system of active voltage quality adjusting device based on power electronics |
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