CN201113441Y - Passive dynamic response harmonic harnessing apparatus - Google Patents
Passive dynamic response harmonic harnessing apparatus Download PDFInfo
- Publication number
- CN201113441Y CN201113441Y CNU2007200583778U CN200720058377U CN201113441Y CN 201113441 Y CN201113441 Y CN 201113441Y CN U2007200583778 U CNU2007200583778 U CN U2007200583778U CN 200720058377 U CN200720058377 U CN 200720058377U CN 201113441 Y CN201113441 Y CN 201113441Y
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- harmonic
- harmonic elimination
- protection
- dynamic response
- reactor
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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
- Y02E40/40—Arrangements for reducing harmonics
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Abstract
The utility model discloses a passive dynamic response harmonic treatment device, which is formed by a control system, a harmonic elimination system and a protection system, wherein, a protection transformer, a current and voltage detection circuit board in the protection system are serially connected with a PLC in the control system, the protection transformer, the current and voltage detection circuit board and the PLC are connected with a harmonic elimination system through a control cable, a harmonic elimination reactor, a harmonic elimination capacitor, a switched thyristor and a switched contactor in the harmonic elimination system are serially connected, and a damping resistor is parallelly connected with the harmonic elimination reactor, the harmonic elimination capacitor and the switched thyristor. After the technical proposal is adopted, the passive dynamic response harmonic treatment device comprehensively utilizes technologies such as power electronics technology, harmonic treatment technology, micro-treatment technology, and automatic control and so on, realizes the high dynamic response and self-tuning harmonic treatment, has the characteristics of high safety and stability, can automatically realize the switching of each harmonic elimination unit according to the power parameters of the power grid; the harmonic elimination range is between 3 and 13 times; and the harmonic elimination effect can be high up to 65 percent.
Description
Technical field:
The utility model relates to the power network harmonic wave management technical field, especially relates to a kind of passive dynamic response harmonic treating apparatus.
Background technology:
Inner large capacity equipment of using electricity system and frequency conversion equipment etc. are widely adopted at present, serious day by day Harmonic Interference public hazards have been produced, cause the unusual and accident of equipment operation easily, the harmonic wave feedback that is produced also can be fed back power supply grid and produce secondary pollution, and the public hazards how comprehensive harmonic carcellation causes become the problem that industry is concerned about.
The utility model content:
The purpose of this utility model is to provide a kind of passive dynamic response harmonic treating apparatus, and it is applicable to low-pressure system, and harmonic elimination is effective, fail safe and the high characteristics of stability.
For achieving the above object, the utility model is by control system, removes humorous system and the protection system three parts constitute, and wherein, control system comprises programmable logic controller (PLC) PLC, man-machine interface touch-screen and power monitoring instrument; Removing humorous system comprises except that humorous reactor, harmonic elimination capacitor group, thuristor throw-in and throw-off module, damping resistance unit, cut-in and cut-off contactor; Protection system then comprises protection transformer, current/voltage testing circuit plate, transformer resistance-capacitance protection network, each device temperature protection circuit; PLC in protection transformer in the protection system, current/voltage testing circuit plate and the control system is serially connected; and link to each other with the harmonic elimination system by control cable jointly; harmonic elimination reactor in the harmonic elimination system, harmonic elimination capacitor, switching thyristor, cut-in and cut-off contactor are serially connected, and damping resistance then is connected in parallel with harmonic elimination reactor, harmonic elimination capacitor, switching thyristor.
Described harmonic elimination reactor and harmonic elimination capacitor have many groups.
Described transformer resistance-capacitance protection network is made of electric capacity and discharge resistance, so that the protection transformer bears the big electric current of harmonic elimination capacitor discharge generation.
After adopting technique scheme, the beneficial effects of the utility model are: its integrated use power electronic technology, harmonic wave control technology, microprocessing, technology such as control automatically, high dynamic response, self-tuning harmonic wave control have been realized, have fail safe and the high characteristics of stability, can realize the switching of each harmonic elimination unit according to the grid power parameter automatically, harmonic elimination scope 3～13 times, the harmonic elimination effect can reach 65%.
Description of drawings:
Below in conjunction with accompanying drawing the utility model is described further:
Accompanying drawing 1 is a control system schematic diagram of the present utility model;
Accompanying drawing 2 is a harmonic elimination systematic schematic diagram of the present utility model;
Accompanying drawing 3 is a general structure trace-diagram of the present utility model;
Embodiment:
The following stated only is preferred embodiment of the present utility model, does not therefore limit protection range of the present utility model.
Be that example illustrates structure of the present utility model and operation principle to eliminate 5,7,11 subharmonic below, see that accompanying drawing 1 is to shown in the accompanying drawing 3: the utility model is by control system, removes humorous system and the protection system three parts constitute, wherein, control system comprises programmable logic controller (PLC) PLC11, man-machine interface touch-screen 12 and power monitoring instrument 13; Removing humorous system comprises except that humorous reactor 21, harmonic elimination capacitor 22, thuristor throw-in and throw-off module 23, damping resistance unit 24, cut-in and cut-off contactor 25; Protection system then comprises protection transformer 31, current/voltage testing circuit plate 32, transformer resistance-capacitance protection network 33, each device temperature protection circuit 34; PLC11 in protection transformer 31 in the protection system, current/voltage testing circuit plate 32 and the control system is serially connected, and link to each other with the harmonic elimination system by control cable jointly, harmonic elimination reactor 21 in the harmonic elimination system, harmonic elimination capacitor 22, thuristor throw-in and throw-off module 23, cut-in and cut-off contactor 25 are serially connected, wherein, harmonic elimination reactor 21 and harmonic elimination capacitor 22 can adopt many groups as required; 24 of damping units and harmonic elimination reactor 21, harmonic elimination capacitor 22, switching thyristor 23 are connected in parallel.
Principle of the present utility model is as follows: the condenser capacity in the harmonic elimination system designs according to the reactive power of the required compensation of fundamental frequency and system, the selection of the inductance value in the LC loop is according to can produce the resonance of connecting with capacitor in this subfrequency, make harmonic filter form low-down impedance at this subfrequency, allow most this harmonic current flow into harmonic filter, and without major loop, play harmonic carcellation, power conditioner, correcting power factors improves the electrical network damping characteristic.
Control system is made of PLC11, man-machine interface touch-screen 12 and power monitoring instrument 13, forms high-performance, high automation, safe and reliable automatic switching system.Its power monitoring instrument 13 can detect multiple grid power data, comprise fundamental current, voltage, power factor, judge that power factor is capacitive or perception, 3～31 primary current harmonic waves, 3～31 voltage harmonics arrive PLC11 to transfer of data through RS485 communication.PLC11 at first judges according to fundamental current whether power consumption equipment has load, if the then size of readout power factor is arranged, and is that capacitive or perception judge whether harmonic elimination system switching is gone into electrical network according to power factor, has stopped to cross the possibility of mending.The judgement of harmonic elimination system switching condition is with all the time through the overall process of equipment operation.
The electric current and voltage value that protection transformer 31 in the protection system is gathered harmonic elimination reactor 21 and harmonic elimination capacitor 22 tie points is input to current/voltage testing circuit plate 32 after its transformation.In case the current/voltage sudden change occurs, then the abnormal signal of check-out console output response is given PLC11, comprehensively judges whether to continue switching by PLC11.When the harmonic elimination system disconnect with being connected of electrical network after, protection transformer 31 can avoid control system because of the generation of the electric weight in the capacitor misoperation electric weight rapid release in the harmonic elimination capacitor 22.In discharge process, the transformer resistance-capacitance network that is made of electric capacity and resistance can allow protection transformer 31 bear the big electric current that harmonic elimination capacitor 22 generates and not be damaged.Each harmonic elimination reactor 21 and thuristor throw-in and throw-off module 23 all are equipped with temperature detect switch (TDS), in case temperature reaches 125 ℃ of set points, temperature detect switch (TDS) is action just, and PLC11 will disconnect the switching of corresponding harmonic elimination unit, avoids the too high damage device of Yin Wendu.
Claims (3)
1. passive dynamic response harmonic treating apparatus, it is characterized in that: it is by control system, removes humorous system and the protection system three parts constitute, wherein, control system comprises programmable logic controller (PLC) PLC, man-machine interface touch-screen and power monitoring instrument; Removing humorous system comprises except that humorous reactor, harmonic elimination capacitor group, thuristor throw-in and throw-off module, damping resistance unit, cut-in and cut-off contactor; Protection system then comprises protection transformer, current/voltage testing circuit plate, transformer resistance-capacitance protection network, each device temperature protection circuit; PLC in protection transformer in the protection system, current/voltage testing circuit plate and the control system is serially connected; and link to each other with the harmonic elimination system by control cable jointly; harmonic elimination reactor in the harmonic elimination system, harmonic elimination capacitor, switching thyristor, cut-in and cut-off contactor are serially connected, and damping resistance then is connected in parallel with harmonic elimination reactor, harmonic elimination capacitor, switching thyristor.
2. passive dynamic response harmonic treating apparatus according to claim 1 is characterized in that: described harmonic elimination reactor and harmonic elimination capacitor have many groups.
3. passive dynamic response harmonic treating apparatus according to claim 2 is characterized in that: described transformer resistance-capacitance protection network is made of electric capacity and discharge resistance, so that the protection transformer bears the big electric current of harmonic elimination capacitor discharge generation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200583778U CN201113441Y (en) | 2007-10-17 | 2007-10-17 | Passive dynamic response harmonic harnessing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200583778U CN201113441Y (en) | 2007-10-17 | 2007-10-17 | Passive dynamic response harmonic harnessing apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201113441Y true CN201113441Y (en) | 2008-09-10 |
Family
ID=39965186
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200583778U Expired - Fee Related CN201113441Y (en) | 2007-10-17 | 2007-10-17 | Passive dynamic response harmonic harnessing apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201113441Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109768553A (en) * | 2019-01-08 | 2019-05-17 | 上海羲源电气科技有限公司 | High-tension network harmonic absorption and network pressure vibration suppression device |
-
2007
- 2007-10-17 CN CNU2007200583778U patent/CN201113441Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109768553A (en) * | 2019-01-08 | 2019-05-17 | 上海羲源电气科技有限公司 | High-tension network harmonic absorption and network pressure vibration suppression device |
| CN109768553B (en) * | 2019-01-08 | 2022-10-04 | 上海羲源电气科技有限公司 | Harmonic wave absorption and network voltage oscillation suppression device for high-voltage power network |
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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: 20080910 Termination date: 20121017 |