CN202004463U - Dynamic reactive compensation controller based on digital signal processing (DSP) - Google Patents
Dynamic reactive compensation controller based on digital signal processing (DSP) Download PDFInfo
- Publication number
- CN202004463U CN202004463U CN2011200895884U CN201120089588U CN202004463U CN 202004463 U CN202004463 U CN 202004463U CN 2011200895884 U CN2011200895884 U CN 2011200895884U CN 201120089588 U CN201120089588 U CN 201120089588U CN 202004463 U CN202004463 U CN 202004463U
- Authority
- CN
- China
- Prior art keywords
- controller
- cpu
- links
- frequency multiplier
- current sampling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- 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
Landscapes
- Control Of Electrical Variables (AREA)
Abstract
The utility model discloses a dynamic reactive compensation controller based on digital signal processing (DSP), which is characterized in that a current transformer and a voltage transformer are connected with a filter amplifier, the filter amplifier is simultaneously connected with one ends of a signal conditioner, a phase-locked frequency multiplier and a current sampling signal device, the other ends of the signal conditioner, the phase-locked frequency multiplier and the current sampling signal device are connected with the central processing unit (CPU) of a controller, the signal conditioner is connected with six ADCInA (0-2) and ADCInB (0-2) input ports on the CPU of the controller, the phase-locked frequency multiplier is connected with an EVB input port on the CPU of the controller, the current sampling signal device is connected with an EVA input port on the CPU of the controller, and the output ports PWM (1-6) of the CPU of the controller are connected with a thyristor valve triggering system. The dynamic reactive compensation controller based on the DSP has the beneficial effects that production cost is reduced, and losses caused by voltage fluctuation and flickering in a circuit are avoided.
Description
Technical field
The utility model relates in a kind of applicable circuit, prevents that element is excessive because of load in the circuit, causes the controller of corrupted.
Background technology
Grid voltage quality is weighed with indexs such as stability, symmetry and sines usually, along with nonlinear-loads such as modern power electronics devices insert electrical network in a large number, grid supply quality is had a strong impact on, the extensive application of wherein various electronic power switch devices and the frequent fluctuation of load are topmost interference sources, have caused a series of harmful effects.
(1) power factor is low, increases grid loss, strengthens production cost, reduces productivity ratio.
(2) reactive power impact of Chan Shenging cause that line voltage falls, voltage fluctuation and flickering, cause transmission device and the protective device can't operate as normal even stopping production when serious.
(3) producing higher harmonic current, cause the line voltage distortion, is " the recessive killer " of electrical network;
(4) cause the electrical network three-phase imbalance, the negative-sequence current of generation vibrates rotor.
Addressing this problem the method for generally using at present is to insert Static Type Dynamic Reactive Compensation Device simultaneously at the disturbance load access point, in order to eliminate reactive power impact, the filtering high order harmonic component, the balance three phase network, its typical case's representative is fixed capacitor+thyristor-controlled reactor, this patent proposes the dynamic reactive compensation device based on DSP, and its key property is the reactive power that it can regulate compensation arrangement continuously.
The utility model content
The technical problems to be solved in the utility model provides and a kind ofly prevents that the frequent fluctuation because of the extensive application of electronic switching device and load from causing forming the circuit controller of interference.
Major technique characteristics of the present utility model are: current transformer, voltage transformer links to each other with filter amplifier, filter amplifier while and signal conditioner, phaselocking frequency multiplier, the current sampling signal device links to each other, its signal conditioner, phaselocking frequency multiplier, the other end of current sampling signal device all links to each other with the CPU of controller, 8 access ports are set on the CPU of controller, 8 delivery outlets, ADCInA on the CPU of its signal conditioner and controller (0-2), six access ports of ADCInB (0-2) link to each other, EVB access port on the CPU of phaselocking frequency multiplier and controller links to each other, EVA access port on the CPU of current sampling signal device and controller links to each other, the delivery outlet PWM (1-6) of the CPU of its controller links to each other with brilliant valve pipe triggering system, two delivery outlets in addition, a delivery outlet links to each other with display, and a delivery outlet links to each other with peripheral circuit.
The beneficial effects of the utility model are: reduced production cost, avoided in the circuit causing loss because of voltage fluctuation and flickering.
Description of drawings:
Fig. 1 is the utility model product structure schematic diagram
Embodiment:
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail
As shown in Figure 1: the utility model is mainly by current transformer, voltage transformer links to each other with filter amplifier, filter amplifier while and signal conditioner, phaselocking frequency multiplier, the current sampling signal device links to each other, its signal conditioner, phaselocking frequency multiplier, the other end of current sampling signal device all links to each other with the CPU of controller, 8 access ports are set on the CPU of controller, 8 delivery outlets, ADCInA on the CPU of its signal conditioner and controller (0-2), six access ports of ADCInB (0-2) link to each other, EVB access port on the CPU of phaselocking frequency multiplier and controller links to each other, EVA access port on the CPU of current sampling signal device and controller links to each other, the delivery outlet PWM (1-6) of the CPU of its controller links to each other with brilliant valve pipe triggering system, two delivery outlets in addition, a delivery outlet links to each other with display, and a delivery outlet links to each other with peripheral circuit.
In order to make controller have extensive applicability, the input signal of controller is taken from the voltage transformer (PT) of test line, the secondary side of current transformer (CT) respectively.The signal place in circuit receives the signal from PT, CT, it is converted to the signal of sample circuit demand, and will guarantees the authenticity of original signal.So the signal place in circuit will have enough wide frequency response, guarantee that the major part amplitude distortion of input signal is little, phase place has linear phase characteristic.
The signal that inserts at first by voltage transformer or current transformer, is finished the effect of electrical transformation and electrical isolation.With voltage transformer will be that the ac voltage signal of 0～100V becomes 0～0.4V ac voltage signal from the effective value of PT.Current transformer will become 0～1.4V ac voltage signal from the ac current signal of 0～5A of CT.And the signal that will sample and external signal isolate on electric, thereby improve antijamming capability, guarantees personal safety.The input stage of amplifier can reduce drift with constant-current source, improves input impedance.So input signal is done the conversion of voltage-to-current-voltage.Voltage transformer is selected star lattice SPT204A for use, and current transformer is selected star lattice SCT254 for use.
Dynamic reactive compensation device is furnished with the LC bank of filters, can filtering 2,3,5 subharmonic.Owing to may have non-whole subharmonic and subharmonic in the electrical network, making zero crossing that uncertain displacement take place, is the accuracy that keeps controlling of sampling, should increase the low-pass filtering link before the zero balancing excessively, in the filtering high-frequency signal, also play the effect of amplifying fundamental frequency signal.
Claims (1)
1. dynamic passive compensation controller based on DSP, it is characterized in that: current transformer, voltage transformer links to each other with filter amplifier, filter amplifier while and signal conditioner, phaselocking frequency multiplier, the current sampling signal device links to each other, its signal conditioner, phaselocking frequency multiplier, the other end of current sampling signal device all links to each other with the CPU of controller, 8 access ports are set on the CPU of controller, 8 delivery outlets, ADCInA on the CPU of its signal conditioner and controller (0-2), six access ports of ADCInB (0-2) link to each other, EVB access port on the CPU of phaselocking frequency multiplier and controller links to each other, EVA access port on the CPU of current sampling signal device and controller links to each other, the delivery outlet PWM (1-6) of the CPU of its controller links to each other with brilliant valve pipe triggering system, two delivery outlets in addition, one delivery outlet links to each other with display, and a delivery outlet links to each other with peripheral circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200895884U CN202004463U (en) | 2011-03-30 | 2011-03-30 | Dynamic reactive compensation controller based on digital signal processing (DSP) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200895884U CN202004463U (en) | 2011-03-30 | 2011-03-30 | Dynamic reactive compensation controller based on digital signal processing (DSP) |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202004463U true CN202004463U (en) | 2011-10-05 |
Family
ID=44707190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200895884U Expired - Fee Related CN202004463U (en) | 2011-03-30 | 2011-03-30 | Dynamic reactive compensation controller based on digital signal processing (DSP) |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202004463U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103545822A (en) * | 2013-10-18 | 2014-01-29 | 海特尔机电工程技术（马鞍山）有限公司 | Reactive power adjustment device |
| CN105870938A (en) * | 2016-05-12 | 2016-08-17 | 孙文兵 | Dynamic reactive power collecting device |
-
2011
- 2011-03-30 CN CN2011200895884U patent/CN202004463U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103545822A (en) * | 2013-10-18 | 2014-01-29 | 海特尔机电工程技术（马鞍山）有限公司 | Reactive power adjustment device |
| CN105870938A (en) * | 2016-05-12 | 2016-08-17 | 孙文兵 | Dynamic reactive power collecting device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7352597B2 (en) | Comprehensive power quality controller for substation in power system | |
| CN102520218B (en) | Programmable trouble power simulator | |
| CN105140921B (en) | A kind of electric power spring topological structure realized based on current source inverter and its control method | |
| CN107733244B (en) | Power electronic transformer with arc suppression coil and control method thereof | |
| CN105470963B (en) | A kind of Active Power Filter-APF and its control method | |
| CN104993484A (en) | Active electrical filter | |
| CN102624001B (en) | Hybrid electric filtering device based on triple harmonic active filter | |
| CN102255326A (en) | Method and system for balancing active power loads | |
| CN102347707A (en) | Three-phase inverter control system and control method thereof | |
| CN202004463U (en) | Dynamic reactive compensation controller based on digital signal processing (DSP) | |
| Chen et al. | Control strategy for three-phase four-wire PWM converter of integrated voltage compensation type active SFCL | |
| CN204706889U (en) | Low-voltage dynamic filtering bucking-out system | |
| CN106169882B (en) | A kind of Inverter based on the control of PR inner ring | |
| CN202550538U (en) | Cycle-by-cycle overcurrent limiting protection electric energy quality control device | |
| CN204068276U (en) | Static reacance generator | |
| Kanase et al. | Distribution static compensator for power quality improvement using PV array | |
| CN109905051A (en) | The phase voltage balancer and equalization methods of three-phase inverter | |
| TW201345105A (en) | Current detecting device and power quality compensation system using same | |
| CN108123462A (en) | A kind of Voltage unbalance linear quadratic control method of isolated island micro-capacitance sensor | |
| CN106936143B (en) | A kind of Research on Unified Power Quality Conditioner current on line side balance control method | |
| Reddy et al. | Voltage sag and swell compensation in integrated system using advanced UPQC | |
| CN113612263B (en) | Low-frequency oscillation suppression method and system for multi-port AC/DC hybrid power distribution network | |
| CN106208059B (en) | Adjustable impedance formula distributed photovoltaic power generation cluster resonance inhibiting system and suppressing method | |
| CN101834532B (en) | High-voltage and high-power transducer | |
| CN202872365U (en) | Hybrid electric filter device based on third harmonic active power filter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111005 Termination date: 20130330 |