CN201430442Y - Active power filter device - Google Patents
Active power filter device Download PDFInfo
- Publication number
- CN201430442Y CN201430442Y CN2009200336214U CN200920033621U CN201430442Y CN 201430442 Y CN201430442 Y CN 201430442Y CN 2009200336214 U CN2009200336214 U CN 2009200336214U CN 200920033621 U CN200920033621 U CN 200920033621U CN 201430442 Y CN201430442 Y CN 201430442Y
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- hall sensor
- filter device
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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]
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Abstract
The utility model discloses an active power filter device, which comprises a box body, the upper space in the box body is provided with an inverter module and a DC capacitor which are electrically connected with each other, a circuit breaker, an AC contactor, a current-mode current Hall sensor, a fast fuse, a fan, a switching power supply, a voltage Hall sensor, a current Hall sensor, an air switch and a contactor are all fixedly arranged on a fixed board in the front of the box body, a resistor is fixedly arranged on a fixed board on the back of the tank body, reactors are arranged in the middle of the box body in parallel, a controller is fixedly arranged on a front cover, and a load-sampling voltage-mode current Hall sensor is arranged at the incoming line end of a nonlinear load outside the box body. The controller adopts the dual digital signal processor DSP control system and the combination of the hardware and the software for analysis, computation and processing of sampling signals, and outputs the commands to generate PWM signals, so that the inverter can generate the compensation current into the grid, and the compensation current has the equal amplitude value to the amplitude value of the harmonic current of the grid but the polarity opposite to the polarity of the harmonic current of the grid.
Description
Technical field
The utility model relates to a kind of power filter device, particularly a kind of active electric filter device, this device adopts mode in parallel, by modern power electronics technology and the novel electric power harmonic wave control equipment that develops based on the Digital Signal Processing of high-speed dsp device.
Background technology
In transmission system and power distribution network, the use of a large amount of nonlinear loads, the problem that make that electrical network exists voltage flicker, fluctuation, floats frequently, three-phase imbalance, harmonic wave etc. influences the quality of power supply and efficient, especially with Switching Power Supply and AC speed regulating equipment a large amount of uses of the various power electronic equipments of representative, safe operation to electrical network and power consumption equipment has produced threat, makes that reactive power and harmonic compensation become the problem that presses for solution in the electric power system
In the past, this problem on the one hand mainly was by using passive filtration unit to solve.Traditional Passive LC filter can reduce harmonic wave, and the capacitor of use can improve the power factor of AC load, but has tangible deficiency and defective: the selected usually characteristic frequency of the passive filter of design, filtering predetermined number of times harmonic wave; There is possibility with electrical network generation resonance; Impedance and frequency change to electrical network are very responsive, simultaneously, also have problems such as volume is big, loss is big.
How further to improve the quality of power supply, suppress harmonic wave and reactive power in the electrical network effectively, this problem has caused widely to be paid close attention to.Many experts and scholar research and develop the dynamic adjustable device always and solve power quality problem, and what wherein have the meaning represented is Active Power Filter-APF.From present domestic situation, utilizing Active Power Filter-APF to carry out harmonic wave and reactive power compensation is from now on a development trend with the technology that improves the quality of power supply.
Summary of the invention
In view of above situation, the purpose of this utility model is, a kind of active electric filter device is provided, this device is with electric current, voltage hall sensor, converter module, direct current capacitor, reactor closes sub-agencies, and controller etc. place in the casing, improved reliability, reduced cost again, and made easy for installationization, be connected in parallel on and be independent of in the electrical network outside the network system impedance, be not subjected to the network system impedance influences, resonance and harmonic voltage do not take place amplify, fail safe is good.
Active electric filter device of the present utility model adopts modern power electronics technology, and hardware and software organically combines two DSP control system.From target compensation, detect harmonic current, produce one with this harmonic current equal and opposite in direction and opposite polarity offset current injects electrical network, only contain fundametal compoment in the electrical network thereby make by compensation arrangement.
In order to realize above-mentioned task, the utility model is taked following technical solution:
A kind of active electric filter device, comprise a casing, it is characterized in that, upper space in the casing is equipped with the converter module and the dc capacitor of mutual electrical connection, circuit breaker, A.C. contactor, current mode current Hall transducer, fast acting fuse, blower fan, Switching Power Supply, the current mode voltage hall sensor, the voltage-type voltage hall sensor, sky is opened with the contactor overall fixed and is being positioned on the anterior fixed head of casing, resistance is fixed on the fixed head at casing rear portion, reactor is installed in the middle part of casing side by side, controller is fixed in the protecgulum position, and load sampled voltage type current Hall sensing is arranged on the end of incoming cables of the outer nonlinear load of casing.
Some other characteristics of the present utility model are:
Described control section comprises that at least double digital signal processor DSP module, sampled signal input module, hardware computing module, LCD and LED show that display circuit, switching input module, control signal output module, triangular wave form module, driver module, communication interface.
Whole device also has control loop, and control loop comprises control power supply, air switch, device working indicating, manual switching circuit, protective circuit at least.
Active electric filter device of the present utility model has the complete protection function, comprises overload, overvoltage, under voltage, overcurrent, temperature protection and self-diagnostic function.
Active electric filter device of the present utility model has been realized multiple compensation model: H pattern---compensation harmonic; HkQ pattern---compensation harmonic+adjustable reactive power; The kQ pattern---compensate adjustable reactive power; Imb pattern---compensating three-phase unbalance.
Device adopts Optical Fiber Transmission to turn-off control signal, can turn-off converter module fast, prevents the fault extension.
Active electric filter device of the present utility model, both can realize that the harmonic compensation of three-phase four-wire system also can satisfy the compensation of three-phase three wire system, and can may be used in the system of 6～35kV by the coupling of special transformer, expanded the range of application of electric pressure aspect.
Active electric filter device of the present utility model, scalability is good, can adapt to the topological structure of multiple bucking-out system, but multi-machine parallel connection work enlarges compensation capacity flexibly according to user's needs.
Description of drawings
Fig. 1 is the structural representation of the utility model device.Wherein, (a) being the front view of device, (b) is to cover front view, (c) is to cover rearview, (d) is to cover end view; What number in the figure was represented is: 1, converter module, 2, dc capacitor, 3, circuit breaker, 4, A.C. contactor, 5, current mode current Hall transducer, 6, fast acting fuse, 7, blower fan, 8, Switching Power Supply, 9, the current mode voltage hall sensor, 10, voltage-type voltage hall sensor, 11, sky opens, 12, contactor, 13, resistance, 14, reactor, 15, controller, 16, casing, 18, input terminal.
Fig. 2 is the schematic diagram of the utility model device.What the label among the figure was represented is: 1, converter module, 2, dc capacitor, 3, circuit breaker, 4, A.C. contactor, 5, current mode current Hall transducer, 6, fast acting fuse, 7, blower fan; 9, the first current mode voltage hall sensor, 10, the second current mode voltage hall sensor, 11, sky opens, 13, resistance, 14, reactor, 15, controller, 17, load sampled voltage type current Hall transducer.
Fig. 3 is the controller block diagram of the utility model device.
Fig. 4-1,4-2,4-3,4-4,4-5,4-6,4-7,4-8,4-9,4-10,4-11,4-12, be that controller signals is handled and output circuit.
Fig. 5 is the controller software flow chart.
Fig. 6 is a controller major cycle schematic diagram.
Fig. 7 is the control loop winding diagram of the utility model device.
In order more to be expressly understood active electric filter device of the present utility model, the utility model is described in further detail below in conjunction with accompanying drawing and instantiation.
Embodiment
The technology that the utility model adopts solves thinking: use modern power electronics technology and make novel electric power harmonic wave control special equipment based on the Digital Signal Processing of at a high speed two DSP devices.It adopts the electric current in the high performance Hall instrument transformer real time monitoring circuit, and adopt the four-quadrant analog multiplier of high accuracy to realize ordering calculation, sending into high speed digital signal processor (DSP) handles signal, harmonic wave is separated with first-harmonic, and send driving command to current transformer (offset current generation circuit) with pulse-width modulation (PWM) signal form, the current transformer generation equates with the mains by harmonics current amplitude, opposite polarity offset current injects electrical network, initiatively harmonic current is offset.
Active electric filter device of the present utility model mainly by converter module 1, dc capacitor 2, circuit breaker 3, A.C. contactor 4, current mode current Hall transducer 5, fast acting fuse 6, blower fan, Switching Power Supply 8, the first current mode voltage hall sensor 9, the second current mode voltage hall sensor 10, sky open 11, contactor 12, resistance 13, reactor 14, controller 15, casing 16 and load sampled voltage type current Hall sensing 17 form.Except that load sampled voltage type current Hall sensing 17 (load sampled voltage type current Hall sensing 17 is installed in the end of incoming cables of nonlinear load), all in casing 16, wherein converter module 1 and dc capacitor 2 are installed in the upper space in the casing 16 to above-mentioned all components and parts; Circuit breaker 3, A.C. contactor 4, current mode current Hall transducer 5, fast acting fuse 6, blower fan 7, Switching Power Supply 8, current mode voltage hall sensor 9, voltage-type voltage hall sensor 10, sky open 11 and contactor 12 overall fixed be positioned on the casing 16 anterior fixed heads; Resistance 13 is fixed on the fixed head at casing 16 rear portions, and reactor 14 is installed in the middle part of casing 16 side by side, and controller 15 is fixed in the protecgulum position.
Active electric filter device further includes control loop, and described control loop comprises control power supply, air switch, device working indicating, manual switching circuit, protective circuit at least.
In Fig. 1, converter module 1 includes IGBT module, IGBT driver module, fin, DC master row and temperature sensing module.Input terminal 18 joins by fast acting fuse 4 and converter module 1 with circuit breaker 3, contactor 4.Electric current in current mode current Hall transducer 5 measurement circuitry is passed to controller 15 with signal.Switching Power Supply 8 is little to provide working power for controller 15.The current transformer generation that controller 15 generation instructions and formation pwm signal are formed converter module 1, direct current capacitor 2, reactor 14 equates with the mains by harmonics current amplitude, opposite polarity form offset current injection electrical network.
Fig. 2 is the schematic diagram of the utility model device.In Fig. 2, load sampled voltage type current Hall sensing 17 is installed in the end of incoming cables of nonlinear load, load sampled voltage type current Hall sensing 17, current mode voltage hall sensor 9, voltage-type voltage hall sensor 10, current mode current Hall transducer 5 are respectively with the load-side electric current that collects, system A phase voltage, the electric current of converter module 1 and dc capacitor 2 voltage signals are sent into controller 15.15 pairs of sampled signals of controller are analyzed, calculate, are handled, then output order and form current transformer that pwm signal forms converter module 1, direct current capacitor 2, reactor 14 generate equate with the mains by harmonics current amplitude, opposite polarity form offset current injection electrical network.
Fig. 3 is the controller block diagram of the utility model device.Controller 15 shows that by two DSP processing modules, sampled signal input module, hardware computing module, LCD and LED display circuit, switching input module, control signal output module, triangular wave form module, driver module, communication interface etc. and form.The sampled signal input module is gathered required signal and signal is sent into the hardware computing module, and the signal that two DSP processing modules are handled the hardware computing module is analyzed, calculates, handled, and exports to the control signal output module.The control signal output module compares the formation instruction with the signal of output signal, signal sampling input module and the triangular wave formation module of DSP, passes to driver module, forms final command.Communication interface can be by RS232/RS485/CAN communication modes directly and the external equipment communication, also can with carry out wireless telecommunications after wireless communication module is connected.
Fig. 4-1,4-2,4-3,4-4,4-5,4-6,4-7,4-8,4-9,4-10,4-11,4-12, be the signal processing and the output circuit of controller.This circuit is made up of double digital signal processor (DSP) chip TMS 320 F 2812, power supply chip TDS767D318, the four-quadrant analog multiplier MLT04 of high accuracy, high-performance phase-locked loop chip CD74HCT4046AE, high speed D chip TLV5631DW and high speed analog computing amplifier LF353.
Fig. 5 and Fig. 6 are respectively the dsp software flow chart and the software major cycle schematic diagram of controller.The software design of the controller of the utility model device becomes regularly multitask structure, promptly with A mutually the 50Hz of 50Hz signal Synchronization interrupt and 12800Hz interrupt call signal sampling, data processor.The serial communication of DSP interrupts receiving the instruction of host computer, information such as real time data, historical data is passed to host computer realize communication function.
Fig. 7 is the control loop winding diagram of the utility model device.Control loop partly is made up of control power supply, air switch, power indicating circuit, input, excision indicating circuit, automatic switching circuit and manual switching circuit etc.The control power supply is directly introduced by binding post, and the 24V power supply is provided by Switching Power Supply.BD is a power supply indicator, and when the loop was connected, this indicator light was bright.Device drops into indicator light HD1 and excision indicator light HD2 connects with the auxiliary contact QF1 (normally closed) and the QF1 (often opening) of circuit breaker.Device can drop into indicator light LD1 and device and can not drop into indicator light LD2 and often open with a normally closed auxiliary contact with of contactor KM2 respectively and link to each other.When pressing when often opening button SB2, by normally closed button SB2, KM2 finishes self-locking, and LD2 extinguishes, and LD1 lights, and this moment, device can put into operation.When pressing normally closed button SB3, the KM2 dead electricity is installed out of service.Can make KM2 and QF1 dead electricity simultaneously by scram button, make device out of service.Controller is controlled KM1 by normally opened contact, thus the input of controlling resistance and excision.
Active electric filter device of the present utility model, compact conformation, volume is little, and installation process is simple, and is easy to maintenance.Be connected in parallel on and be independent of in the electrical network outside the network system impedance, be not subjected to the network system impedance influences, resonance and harmonic voltage do not take place amplify, fail safe is good.
Active electric filter device of the present utility model adopts high performance Hall current instrument transformer and Hall voltage instrument transformer and high-precision five rank antialiasing filter technology, has guaranteed the precision of control algolithm; Controller has used two DSP control system, and the scheme that Control System Design has taked hardware and software to organically combine effectively raises response speed; The controller circuitry novelty, intelligent and automaticity height; Defencive function is perfect; Have communication interface, can carry out reliable communication with miscellaneous equipment.
Claims (5)
1, a kind of active electric filter device, comprise a casing (16), it is characterized in that, upper space in the casing (16) is equipped with the converter module (1) and dc capacitor (2) of mutual electrical connection, circuit breaker (3), A.C. contactor (4), current mode current Hall transducer (5), fast acting fuse (6), blower fan (7), Switching Power Supply (8), current mode voltage hall sensor (9), voltage-type voltage hall sensor (10), sky opens (11) and contactor (12) overall fixed is being positioned on the anterior fixed head of casing (16), resistance (13) is fixed on the fixed head at casing (16) rear portion, reactor (14) is installed in the middle part of casing (16) side by side, controller (15) is fixed in the protecgulum position, and load sampled voltage type current Hall sensing (17) is arranged on the end of incoming cables of the outer nonlinear load of casing (16).
2, active electric filter device as claimed in claim 1 is characterized in that, further includes control loop, and described control loop comprises control power supply, air switch, device working indicating, manual switching circuit, protective circuit at least.
3, active electric filter device as claimed in claim 1, it is characterized in that described controller (16) comprises that at least double digital signal processor DSP module, sampled signal input module, hardware computing module, LCD and LED show that display circuit, switching input module, control signal output module, triangular wave form module, driver module and communication interface.
4, active electric filter device as claimed in claim 1 is characterized in that, described converter module (1) includes IGBT module, IGBT driver module, fin, DC master row and temperature sensing module.
5. active electric filter device as claimed in claim 1, it is characterized in that described voltage-type voltage hall sensor (10), current mode voltage hall sensor (9), load sampled voltage type current Hall sensing (17) and current mode current Hall transducer (5) use 1,2,3 and 3 respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200336214U CN201430442Y (en) | 2009-06-22 | 2009-06-22 | Active power filter device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200336214U CN201430442Y (en) | 2009-06-22 | 2009-06-22 | Active power filter device |
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| Publication Number | Publication Date |
|---|---|
| CN201430442Y true CN201430442Y (en) | 2010-03-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009200336214U Expired - Lifetime CN201430442Y (en) | 2009-06-22 | 2009-06-22 | Active power filter device |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101867187A (en) * | 2010-06-30 | 2010-10-20 | 天津诺尔哈顿电器制造有限公司 | Special modular converter for three-phase three-wire active power filter |
| CN101924366A (en) * | 2010-08-19 | 2010-12-22 | 上海浦元自动化科技有限公司 | Distributed active filter |
| CN103199530A (en) * | 2012-01-05 | 2013-07-10 | 上海韦欧韦滤波设备有限公司 | Active power filter with method for processing harmonic waves in energy-saving and consumption-reducing mode |
| CN103457264A (en) * | 2012-06-01 | 2013-12-18 | 湖北西高电气设备有限公司 | Active power filter device with energy saving, consumption reducing and harmonic suppression |
| CN103515959A (en) * | 2013-09-29 | 2014-01-15 | 安徽华正电气有限公司 | Energy-saving intelligent filter compensation metering comprehensive protection automatic transmission |
| CN104253440A (en) * | 2014-06-30 | 2014-12-31 | 南京亚派科技实业有限公司 | CAN (controller area network) bus-based reactive power compensation device provided with switching tubes, and control method of CAN bus-based reactive power compensation device |
| WO2015027563A1 (en) * | 2013-08-24 | 2015-03-05 | 中国北车集团大同电力机车有限责任公司 | Auxiliary filtering cabinet |
| CN105870946A (en) * | 2016-06-06 | 2016-08-17 | 广州开能电气实业有限公司 | Controller of three-phase imbalance adjusting device |
-
2009
- 2009-06-22 CN CN2009200336214U patent/CN201430442Y/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101867187A (en) * | 2010-06-30 | 2010-10-20 | 天津诺尔哈顿电器制造有限公司 | Special modular converter for three-phase three-wire active power filter |
| CN101867187B (en) * | 2010-06-30 | 2012-07-18 | 天津诺尔哈顿电器制造有限公司 | Special converter for three-phase three-wire active power filter |
| CN101924366A (en) * | 2010-08-19 | 2010-12-22 | 上海浦元自动化科技有限公司 | Distributed active filter |
| CN103199530A (en) * | 2012-01-05 | 2013-07-10 | 上海韦欧韦滤波设备有限公司 | Active power filter with method for processing harmonic waves in energy-saving and consumption-reducing mode |
| CN103199530B (en) * | 2012-01-05 | 2016-07-06 | 上海韦欧韦滤波设备有限公司 | There is the energy-saving and cost-reducing active filter administering harmonic wave method |
| CN103457264A (en) * | 2012-06-01 | 2013-12-18 | 湖北西高电气设备有限公司 | Active power filter device with energy saving, consumption reducing and harmonic suppression |
| CN103457264B (en) * | 2012-06-01 | 2015-07-08 | 湖北西高电气设备有限公司 | Active power filter device with energy saving, consumption reducing and harmonic suppression |
| WO2015027563A1 (en) * | 2013-08-24 | 2015-03-05 | 中国北车集团大同电力机车有限责任公司 | Auxiliary filtering cabinet |
| CN103515959A (en) * | 2013-09-29 | 2014-01-15 | 安徽华正电气有限公司 | Energy-saving intelligent filter compensation metering comprehensive protection automatic transmission |
| CN103515959B (en) * | 2013-09-29 | 2016-01-27 | 安徽华正电气有限公司 | The excellent ripple case of a kind of energy-conserving intelligent filtering compensation metering integrated protection |
| CN104253440A (en) * | 2014-06-30 | 2014-12-31 | 南京亚派科技实业有限公司 | CAN (controller area network) bus-based reactive power compensation device provided with switching tubes, and control method of CAN bus-based reactive power compensation device |
| CN105870946A (en) * | 2016-06-06 | 2016-08-17 | 广州开能电气实业有限公司 | Controller of three-phase imbalance adjusting device |
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Granted publication date: 20100324 |
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