CN202696152U - Active electric power filter for intelligent power grid - Google Patents
Active electric power filter for intelligent power grid Download PDFInfo
- Publication number
- CN202696152U CN202696152U CN2012203962283U CN201220396228U CN202696152U CN 202696152 U CN202696152 U CN 202696152U CN 2012203962283 U CN2012203962283 U CN 2012203962283U CN 201220396228 U CN201220396228 U CN 201220396228U CN 202696152 U CN202696152 U CN 202696152U
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- dsp
- arm
- current
- electric power
- power filter
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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
- Y02E40/20—Active power filtering [APF]
Abstract
The utility model relates to an active electric power filter for an intelligent power grid, and the filter comprises a DSP, an ARM, a host computer connected with the DSP, an optical coupler isolation circuit connected with a PWM signals output terminal of the DSP, an inversion main circuit connected with the optical coupler isolation circuit, and a keyboard and a LCD connected with the ARM. The active electric power filter employs the DSP+ARM to form a dual-processor control system, wherein the high speed DSP chip TMS320F2812 is used for completion of functions like A/D transition, harmonic wave and wattless current calculation, generation of the PWM signals, and communications with the host computer, the ARM chooses ARMCortex-M3 chip, and is mainly used for completion of keyboard control, display of human machine interface, and system function management. A current transformer and a voltage transformer of Hall Effect are employed for detection of load current and compensating current and for detection of two ends voltage of a current transformer direct current side capacitance, detection accuracy is high, and response speed is fast.
Description
Technical field
The utility model relates to a kind of Active Power Filter-APF that is applied to intelligent grid.
Background technology
In the power industry of existing state, nearly all be to adopt sinusoidal supply power mode.In desirable electric power system, power supply with the sinusoidal variations rule of single constant frequency (50 or 60HZ) to mains supply.Along with the progress of society and science and technology, it is increasingly extensive that power electronic device is used, and the loads such as rectifier, arc furnace, RHVC, electric railway use in the power distribution network constantly increases, so that the voltage in the electrical network, current waveform distorted.In the waveform of these electric currents and voltage, not only comprise the sinusoidal quantity (being called fundametal compoment) with the power supply same frequency, and the component sine waves that a series of frequencies are the fundamental frequency integral multiple (higher harmonic components) have appearred, these a series of sinusoidal components are referred to as electric harmonic, have also caused simultaneously the series of problems such as the reduction of system power factor, voltage fluctuation, flickering and three-phase imbalance.Mains by harmonics content increases; caused the electric equipment lost of life; network loss strengthens; the possibility of system's generation harmonic resonance increases; shunt capacitor can not normally move; may cause simultaneously the non-fault sexual act of relaying protection and automatics, cause instrument indication and electric energy metrical inaccurate, computer, communicating by letter the series of problems such as is disturbed.Various faults and accident by harmonic wave causes have caused unnecessary loss to national economy and production, life, how to address this problem, and be the technical barrier of this area.
The utility model content
The technical problems to be solved in the utility model provides a kind of simple in structure, precision is higher, the response time is short, the real-Time Compensation performance is higher Active Power Filter-APF that is applied to intelligent grid.
For addressing the above problem, the Active Power Filter-APF that is applied to intelligent grid that the utility model provides comprises: the DSP(digital signal controller), the ARM(microprocessor that links to each other with the serial ports of this DSP), the host computer that links to each other with this DSP, the photoelectric isolating circuit that links to each other with the pwm signal output port of this DSP, the inverter main circuit that links to each other with this photoelectric isolating circuit, the keyboard and the LCD that link to each other with described ARM.
Further, this Active Power Filter-APF also comprises current transformer and the voltage transformer that links to each other with described DSP.
But described DSP is connected with for communicating the RS232/RS485/CAN field bus communication interface of flexible configuration with host computer.
The technique effect that the utlity model has:
(1) Active Power Filter-APF of the present utility model adopts DSP and ARM to form dual processor controlling system, wherein the high-speed dsp chip TMS 320 F 2812 is used for finishing generation and the function of communicating by letter with host computer of A/D conversion, harmonic wave and reactive current calculating, pwm signal, ARM selects ARM Cortex-M3 chip, is mainly used in finishing Keyboard Control, man-machine interface demonstration and systemic-function management.
Current transformer and the voltage transformer of Hall effect adopted in the detection of (2) detection of load current, offset current, and current transformer dc bus capacitor both end voltage, and accuracy of detection is high, fast response time.
(3) be furnished with LCD display and keyboard, can show in real time the parameters of electric power values such as harmonic current, reactive power, can carry out real time fail record and logout, and carry out the multiple-working mode selection such as the idle simultaneously compensation of harmonic elimination, reactive power compensation and harmonic wave.
(4) be furnished with RS232/RS485/CAN field bus communication interface, can communicate with host computer, realize the data remote function based on the intelligent grid platform, and can realize the network monitoring warning function by host computer monitoring software, reliable communications, real-time.
(5) adopt optical coupling isolation circuit between main circuit and the PWM, have good electric insulation and antijamming capability.
Description of drawings
For content of the present utility model is more likely to be clearly understood, below the specific embodiment and by reference to the accompanying drawings of basis, the utility model is described in further detail, wherein
Fig. 1 is the structured flowchart that is applied to the Active Power Filter-APF of intelligent grid of the present utility model, the e among the figure
sBe current source, i
s(t) electric current of exporting for current source.
Embodiment
See Fig. 1, the Active Power Filter-APF that is applied to intelligent grid that present embodiment provides comprises: DSP, the ARM that links to each other with the serial ports of this DSP, the host computer that links to each other with this DSP, the optical coupling isolation circuit that links to each other with the pwm signal output port of this DSP, the inverter main circuit that links to each other with this optical coupling isolation circuit, the keyboard that links to each other with described ARM and LCD, the current transformer and the voltage transformer that link to each other with described DSP.Adopt the SPI serial communication protocol to communicate between DSP and the ARM.
Described DSP is furnished with for the RS232/RS485/CAN communication interface that communicates with host computer.
During work, current transformer and voltage transformer detect nonlinear load, detect the load signal i that obtains
L(t) send into DSP through modulus converter A/D, DSP is by calculating A/D conversion, harmonic wave and reactive current, operating personnel are by the LCD(liquid crystal display) the parameters of electric power values such as the harmonic current that shows, reactive power, by keyboard ARM is inputted instruction, be transformed into the idle simultaneously mode of operation of compensation of harmonic elimination or reactive power compensation or harmonic wave and send to DSP, then the DSP control PWM pwm signal that produces corresponding duty ratio sends to inverter main circuit, inverter main circuit produces corresponding electric current and is injected in the electrical network, reaches the purpose of filtering.
Obviously, above-described embodiment only is for the utility model example clearly is described, and is not to be restriction to execution mode of the present utility model.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give all execution modes exhaustive.And these belong to apparent variation or the change that spirit of the present utility model extended out and still are among the protection range of the present utility model.
Claims (2)
1. Active Power Filter-APF that is applied to intelligent grid is characterized in that comprising: DSP, the ARM that links to each other with the serial ports of this DSP, the host computer that links to each other with this DSP, the optical coupling isolation circuit that links to each other with the pwm signal output port of this DSP, the inverter main circuit that links to each other with this optical coupling isolation circuit, the keyboard and the LCD that link to each other with described ARM.
2. the Active Power Filter-APF that is applied to intelligent grid according to claim 1 characterized by further comprising: the current transformer and the voltage transformer that link to each other with described DSP.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203962283U CN202696152U (en) | 2012-08-10 | 2012-08-10 | Active electric power filter for intelligent power grid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203962283U CN202696152U (en) | 2012-08-10 | 2012-08-10 | Active electric power filter for intelligent power grid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202696152U true CN202696152U (en) | 2013-01-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012203962283U Expired - Fee Related CN202696152U (en) | 2012-08-10 | 2012-08-10 | Active electric power filter for intelligent power grid |
Country Status (1)
| Country | Link |
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| CN (1) | CN202696152U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104104084A (en) * | 2014-07-16 | 2014-10-15 | 金海新源电气江苏有限公司 | Dual-core processor based active power filter controller |
-
2012
- 2012-08-10 CN CN2012203962283U patent/CN202696152U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104104084A (en) * | 2014-07-16 | 2014-10-15 | 金海新源电气江苏有限公司 | Dual-core processor based active power filter controller |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Free format text: FORMER OWNER: HAN YINGHUI Effective date: 20131223 Owner name: CHANGZHOU INSTITUTE OF LIGHT INDUSTRY TECHNOLOGY Free format text: FORMER OWNER: YANG WENXIN Effective date: 20131223 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20131223 Address after: 213000 Changzhou Province, Wujin District, the new Ming Road, No. 8, No. Patentee after: Changzhou Institute of Light Industry Technology Address before: 213000 Changzhou Institute of Light Industry Technology, 8 Xin Zhong Zhong Road, Wujin District, Jiangsu, Changzhou Patentee before: Yang Wenxin Patentee before: Han Yinghui |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130123 Termination date: 20140810 |
|
| EXPY | Termination of patent right or utility model |