CN204928131U - A active power filter that is used for idle dispatch function of post upper band - Google Patents
A active power filter that is used for idle dispatch function of post upper band Download PDFInfo
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- CN204928131U CN204928131U CN201520536734.1U CN201520536734U CN204928131U CN 204928131 U CN204928131 U CN 204928131U CN 201520536734 U CN201520536734 U CN 201520536734U CN 204928131 U CN204928131 U CN 204928131U
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- circuit
- reactive power
- active power
- power filter
- compensation circuit
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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 relates to an active power filter that is used for idle dispatch function of post upper band, the device pass through the installing support to be fixed on the wire pole to be connected with power supply system and load respectively, active power filter include signal acquisition circuit, processing circuit, harmonic compensation circuit and reactive compensation circuit, signal acquisition circuit, harmonic compensation circuit and reactive compensation circuit be connected with the load respectively, processing circuit respectively with signal acquisition circuit, harmonic compensation circuit and reactive compensation circuit connection. Compared with the prior art, the utility model has the advantages of multi -functional, simple to operate, convenient operation.
Description
Technical field
The utility model relates to a kind of active power filter, especially relates to a kind of active power filter with Reactive Power Dispatch function on post.
Background technology
Along with development and the progress of economic technology, electrical network scale constantly increases, and a large amount of inductive load access electrical networks, causes the power factor of electrical network to continue on the low side.Especially in 10kV transmission line, there is the flowing of a large amount of reactive currents, cause very large transmission losses.The harmonic wave that nonlinear-load causes brings serious negative effect equally, particularly along with the fast development of power electronic technology, the application that various power electronic equipment is increasingly extensive in generating, transmission of electricity, distribution and using electricity system, harmonic wave, idle pollution that it brings electrical network are also serious gradually.Simultaneously along with the progress of social informatization, the extensive use of sensitiveness load (as computer control system, sophisticated electronics etc.), it is also proposed higher requirement to the quality of power supply.
Utility model content
The purpose of this utility model be exactly in order to overcome above-mentioned prior art exist defect and a kind of multi-functional, easy for installation, easy to operate active power filter with Reactive Power Dispatch function on post is provided.
The purpose of this utility model can be achieved through the following technical solutions:
A kind of active power filter with Reactive Power Dispatch function on post, it is characterized in that, this device is fixing on utility poles by mounting bracket, and be connected with electric power system and load respectively, described active power filter comprises signal acquisition circuit, signal processing circuit, harmonic compensation circuit and reactive power compensation circuit, described signal acquisition circuit, harmonic compensation circuit are connected with load respectively with reactive power compensation circuit, and described signal processing circuit is connected with signal acquisition circuit, harmonic compensation circuit and reactive power compensation circuit respectively.
Described signal acquisition circuit comprises the current detection circuit, current tracking circuit and the drive circuit that connect successively, and described current detection circuit is connected on the power supply buses between electric power system and load, and described drive circuit is connected with signal processing circuit.
Described signal processing circuit comprises DSP and radio communication circuit, and described DSP is connected with radio communication circuit, drive circuit, harmonic compensation circuit and reactive power compensation circuit respectively.
Described radio communication circuit is short-distance wireless communication circuit or mobile communication card, and described short-distance wireless communication circuit is Bluetooth chip, wifi chip or ZigBee chip, and described mobile communication card is 2G, 3G or 4G communication card.
Described radio communication circuit is connected with remote terminal by wireless network.
Described remote terminal is PC, panel computer or smart mobile phone.
Described mounting bracket is triangle angle steel, and described active power filter is arranged on triangle angle steel by bolt.
Described mounting bracket upper and lower adopts U mouth anchor ear fixing on utility poles respectively.
Compared with prior art, the utility model has the following advantages:
1) multi-functional, in elimination system, can also reactive power compensation scheduling be carried out while harmonic wave, fundamentally improve the quality of power supply of circuit, reduce line loss, improve power supply reliability and the economic benefit of electrical network.
2) easy for installation, installed by triangle angle steel, adopt anchor ear and bolt to fix simultaneously, the basis of proof strength improves installation convenience;
3) easy to operate, carry out two ore control by local and remote terminal, substantially increase operation ease.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail.
Embodiment
As shown in Figure 1, a kind of active power filter with Reactive Power Dispatch function on post, this device is fixing on utility poles by mounting bracket, and be connected with electric power system 8 and load 7 respectively, described active power filter comprises signal acquisition circuit, signal processing circuit 4, harmonic compensation circuit 5 and reactive power compensation circuit 6, described signal acquisition circuit, harmonic compensation circuit 5 are connected with load 7 respectively with reactive power compensation circuit 6, and described signal processing circuit 4 is connected with signal acquisition circuit, harmonic compensation circuit 5 and reactive power compensation circuit 6 respectively.
Described signal acquisition circuit comprises the current detection circuit 1, current tracking circuit 2 and the drive circuit 3 that connect successively, described current detection circuit 1 is connected on the power supply buses between electric power system 8 and load 7, and described drive circuit is connected with signal processing circuit.
Described signal processing circuit 4 comprises DSP and radio communication circuit, and described DSP is connected with radio communication circuit, drive circuit 3, harmonic compensation circuit 5 and reactive power compensation circuit 6 respectively.
Described DSP analyzes the harmonic components that HARMONIC SIGNAL EXTRACTION FROM device extracts, and sends to harmonic compensation circuit by pwm signal, and harmonic compensation circuit produces the contrary pulse current injectingt in a load harmonic current equal and opposite in direction, direction in electrical network.Described DSP controls reactive power compensation circuit increases the composition with the fundamental reactive component reversed polarity of momentary load electric current in the command signal of offset current.
Described radio communication circuit is short-distance wireless communication circuit or mobile communication card, and described short-distance wireless communication circuit is Bluetooth chip, wifi chip or ZigBee chip, and described mobile communication card is 2G, 3G or 4G communication card.Described radio communication circuit is connected with remote terminal by wireless network, in real time state information is issued remote terminal.Described remote terminal is PC, panel computer or smart mobile phone, this remote terminal by wireless network Real-time Obtaining state information simultaneously can sending controling instruction to DSP.
Described mounting bracket is triangle angle steel, and described active power filter is arranged on triangle angle steel by bolt.Described mounting bracket upper and lower adopts U mouth anchor ear fixing on utility poles respectively.
The active power filter of Reactive Power Dispatch function on post described in the utility model, reactive power compensation scheduling can also be carried out while harmonic wave in elimination system, fundamentally improve the quality of power supply of circuit, reduce line loss, improve power supply reliability and the economic benefit of electrical network.
Device described in the utility model, this application of installation is in Standard type, floor space reduces greatly, solve the problems such as the anti-weather disaster in traditional outdoor compensation arrangement O&M, anti-outside destroy and heat radiation, can effectively economize the land resource, expand the development space of urban distribution network, improve power supply reliability.Pole compensation arrangement can be widely used in the ground such as business district, city, landscape region, residential quarter, and alleviate the pressure that city distribution transformer is built, easy for installation, flexible configuration is changeable.
Device described in the utility model, this device can compensate the harmonic wave that load-side nonlinear-load produces, and improving the system side quality of power supply, is the generation that owner avoids electric power to impose a fine.Load current is detected by current transformer, and calculated by inner DSP, extract the harmonic components in load current, then inner IGBT is sent to by pwm signal, control inverter produces one and load harmonic current equal and opposite in direction, the contrary pulse current injectingt in direction, in electrical network, reaches the object of filtering.
In figure, i
lfor momentary load electric current, i
sfor transient power supply current, i
cfor Active Power Filter-APF injects the offset current of electrical network.According to Kirchhoff's current law (KCL), have: i
s=i
l+ i
c.Owing to containing fundametal compoment and harmonic component in momentary load electric current, momentary load electric current is several to be expressed as: i
l=i
lf+ i
lh, wherein i
lffor the fundametal compoment i of momentary load electric current
lhfor momentary load current harmonics component.If again by momentary load current i
lffundametal compoment resolve into instantaneous active component i
lpfwith instantaneous reactive component i
lqf, then momentary load electric current can be expressed as: i
l=i
lpf+ i
lqf+ i
lh.
If during the harmonic current needing compensating load to produce, the instruction current computing circuit of Active Power Filter-APF detects and calculates the harmonic component of momentary load electric current, using the command signal as offset current after its reversed polarity, the offset current produced by offset current circuit for generating, this offset current and the harmonic component equal and opposite in direction in momentary load electric current, direction are contrary, cancel each other with the harmonic component in momentary load electric current, make only not contain harmonic wave containing the fundametal compoment of load current in source current.So just reach the object eliminating harmonic wave in source current.
If require active power filter while compensation harmonic electric current, go back the reactive power of compensating load, as long as then increase the composition with the fundamental reactive component reversed polarity of momentary load electric current in the command signal of offset current.Like this, the humorous idle component that involves in offset current and load current offsets, and source current equals the fundamental active component of load current.
If load harmonic is not bery serious, then only can need compensate First Harmonic Reactive Power.
Therefore, the basic functional principle of this compensation arrangement can be sketched and be: the electric current detecting target compensation, the command signal of offset current is calculated through instruction current computing circuit, this signal amplifies through offset current circuit for generating, draw offset current, what will compensate in offset current and load current humorously involves the current cancelings such as idle, finally makes source current become the sine wave of expectation.And according to different needs, different functions can be realized.
Claims (8)
1. the active power filter with Reactive Power Dispatch function on post, it is characterized in that, this device is fixing on utility poles by mounting bracket, and be connected with electric power system and load respectively, described active power filter comprises signal acquisition circuit, signal processing circuit, harmonic compensation circuit and reactive power compensation circuit, described signal acquisition circuit, harmonic compensation circuit are connected with load respectively with reactive power compensation circuit, and described signal processing circuit is connected with signal acquisition circuit, harmonic compensation circuit and reactive power compensation circuit respectively.
2. a kind of active power filter with Reactive Power Dispatch function on post according to claim 1, it is characterized in that, described signal acquisition circuit comprises the current detection circuit, current tracking circuit and the drive circuit that connect successively, described current detection circuit is connected on the power supply buses between electric power system and load, and described drive circuit is connected with signal processing circuit.
3. a kind of active power filter with Reactive Power Dispatch function on post according to claim 1, it is characterized in that, described signal processing circuit comprises DSP and radio communication circuit, and described DSP is connected with radio communication circuit, drive circuit, harmonic compensation circuit and reactive power compensation circuit respectively.
4. a kind of active power filter with Reactive Power Dispatch function on post according to claim 3, it is characterized in that, described radio communication circuit is short-distance wireless communication circuit or mobile communication card, described short-distance wireless communication circuit is Bluetooth chip, wifi chip or ZigBee chip, and described mobile communication card is 2G, 3G or 4G communication card.
5. a kind of active power filter with Reactive Power Dispatch function on post according to claim 4, it is characterized in that, described radio communication circuit is connected with remote terminal by wireless network.
6. a kind of active power filter with Reactive Power Dispatch function on post according to claim 5, is characterized in that, described remote terminal is PC, panel computer or smart mobile phone.
7. a kind of active power filter with Reactive Power Dispatch function on post according to claim 1, is characterized in that, described mounting bracket is triangle angle steel, and described active power filter is arranged on triangle angle steel by bolt.
8. a kind of active power filter with Reactive Power Dispatch function on post according to claim 1, is characterized in that, described mounting bracket upper and lower adopts U mouth anchor ear fixing on utility poles respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520536734.1U CN204928131U (en) | 2015-07-22 | 2015-07-22 | A active power filter that is used for idle dispatch function of post upper band |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520536734.1U CN204928131U (en) | 2015-07-22 | 2015-07-22 | A active power filter that is used for idle dispatch function of post upper band |
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| Publication Number | Publication Date |
|---|---|
| CN204928131U true CN204928131U (en) | 2015-12-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520536734.1U Active CN204928131U (en) | 2015-07-22 | 2015-07-22 | A active power filter that is used for idle dispatch function of post upper band |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106374469A (en) * | 2015-07-22 | 2017-02-01 | 利思电气（上海）有限公司 | Pole-mounted power active filtering apparatus with reactive scheduling function |
-
2015
- 2015-07-22 CN CN201520536734.1U patent/CN204928131U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106374469A (en) * | 2015-07-22 | 2017-02-01 | 利思电气（上海）有限公司 | Pole-mounted power active filtering apparatus with reactive scheduling function |
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