CN201156467Y - Tunable reactor - Google Patents
Tunable reactor Download PDFInfo
- Publication number
- CN201156467Y CN201156467Y CNU2008200283975U CN200820028397U CN201156467Y CN 201156467 Y CN201156467 Y CN 201156467Y CN U2008200283975 U CNU2008200283975 U CN U2008200283975U CN 200820028397 U CN200820028397 U CN 200820028397U CN 201156467 Y CN201156467 Y CN 201156467Y
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- coil
- controller
- iron cores
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- reactor
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Abstract
The utility model relates to an adjustable reactor, comprising a controller, a current generator and three independent and respectively adjacent iron cores, which is characterized in that the three independent iron cores are respectively wound with three independent alternating current coils; the three independent iron cores are jointly wound with a direct current coil; the direct current coil is electrically connected with the current generator; the current generator is connected with the controller through a control signal wire. The adjustable reactor can be applied to the starting device of a squirrel-cage high-voltage AC electric motor or the shunt reactive compensation of high-voltage and extra-high voltage power transmission line. By adopting the combined control of ARM and PLC of an embedded computer, the adjustable reactor of the utility model has the advantages of quick calculation speed, good real-time performance and strong anti-interference ability, as well as low cost, light weight and compact structure owing to adopting only three alternating current coils, three iron cores and one direct current coil.
Description
Technical field
The utility model relates to a kind of power equipment that is used for electric power system, particularly a kind of Regulatable reactor.
Background technology
The soft starting device that is widely used in high voltage motor at present is by applying the excitation property that D.C. magnetic biasing changes iron core to iron core, thereby changes the reactance value of reactor.Its major technique characteristics are every two identical iron cores that adopt mutually, and the magnetic flux that two iron cores of D.C. magnetic biasing coil linkage make AC coil produce is zero in dc coil, and dc coil is induced electromotive force not, therefore do not influence applying and controlling of D.C. magnetic biasing.Principle according to this, the soft starting device of high voltage motor all adopts saturable reactor now, and this saturable reactor has six iron cores, six or 12 AC coil and a dc coil, because the iron core quantity that adopts is many, thereby makes its volume and weight all bigger.
Frequency converter is the starting drive of another kind of high voltage motor, by frequency converter is frequency that the three-phase alternating-current supply of 50Hz power frequency is for conversion into frequency and all adjustable three-phase alternating-current supply of voltage, supply with threephase asynchronous then, thereby make the speed of motor adjusted.Frequency control belongs to stepless speed regulation, and it does not reduce detent torque, but because of the price comparison costliness of frequency converter, is unfavorable for wide popularization and application.
Electric power system also is widely applied to reactor, and common have series reactor and a shunt reactor.Series reactor is mainly used to limiting short-circuit current, also has in filter with capacitors in series or in parallelly is used for limiting higher Harmonics in Electric Power Network.Reactor in 220kV, 110kV, 35kV, the 10kV electrical network is the charging capacitive reactive power that is used for absorbing cable line, can adjust working voltage by reactor.The superhigh pressure shunt reactor has the multiple function of improving the relevant operation conditions of power system reactive power power.The series reactor and the shunt reactor that are applied at present in the electric power system all adopt the fixed value reactor, because the influencing factor that power line is subjected in transmission course is complicated and changeable, and the fixed value reactor is difficult to adapt to all changing factors in the power line transmission process, requires just to have compared difficulty so will reach higher electric power transfer.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned defective a kind of Regulatable reactor is provided, and this Regulatable reactor can be applicable to the starting drive of high voltage motor or is used for the reactive power compensator in parallel of high pressure, ultrahigh voltage power transmission line.
The utility model is achieved in that
This kind Regulatable reactor, comprise controller, current feedback circuit, three independences and adjacent separately iron core, it is characterized in that being wound with three groups of independently AC coil respectively on described three independent iron cores, be wound with one group of dc coil jointly on described three independent iron cores, described dc coil is electrically connected with described current feedback circuit, and described current feedback circuit is connected with described controller by control signal wire.
Above-mentioned dc coil is composed in series through the interchange diode of drawing up mutually by three grades of sub-dc coils that are around on three independent iron cores, and described three grades of sub-dc coils are parallel with fly-wheel diode respectively.
Above-mentioned three groups independently AC coil be parallel with voltage transformer and be in series with current transformer respectively, described voltage transformer is connected with controller by holding wire, described current transformer is connected with controller by holding wire.
Above-mentioned controller comprises embedded computer ARM and PLC, and described controller is provided with the LCDs that can show the adjustable scheme of reactor that sets in advance.
The control mode that Regulatable reactor of the present utility model adopts embedded computer ARM and PLC to jointly control, computational speed is fast, and real-time is good, antijamming capability is strong, and this Regulatable reactor only adopts three AC coil, three iron cores and one group of dc coil, cost is low, and is in light weight, compact conformation.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is a single-phase control sketch of the present utility model;
Fig. 3 is a dc coil circuit diagram of the present utility model.
Wherein: 1a, 1b, 1c are iron core; 2a, 2b, 2c are AC coil; 3 is dc coil; 3a, 3b, 3c are three grades of sub-dc coils; 4 for exchanging the diode of drawing up; 5a, 5b, 5c are fly-wheel diode; 6 is current feedback circuit; 7 is controller; 8 is voltage transformer; 9 is current transformer; 10 is LCDs.
Embodiment
Below in conjunction with accompanying drawing the utility model is done and to be described in further detail:
Fig. 1 is the coil and the iron core part of Regulatable reactor of the present utility model, comprise three independences and adjacent separately iron core 1a, 1b, 1c, be wound with three groups of independently AC coil 2a, 2b, 2c respectively on described three independent iron core 1a, 1b, the 1c, be wound with one group of dc coil 3 jointly on described three independent iron core 1a, 1b, the 1c; Referring to Fig. 3, described dc coil 3 is composed in series through the interchange diode 4 of drawing up mutually by being around in three grades of sub-dc coil 3a on three independent iron core 1a, 1b, the 1c, 3b, 3c, and described three grades of sub-dc coil 3a, 3b, 3c are parallel with fly-wheel diode 5a, 5b, 5c respectively.
Above-mentioned three groups independently AC coil 2a, 2b, 2c are parallel with voltage transformer 8 respectively and are in series with current transformer 9, described voltage transformer 8 detects the voltage signal on the AC coil and offers connected controller 7, and described current transformer 9 detects the current signal on the AC coil and offers connected controller 7.
Referring to Fig. 2 single-phase control sketch of Regulatable reactor for this reason, the both positive and negative polarity of dc coil 3 is connected with the output both positive and negative polarity of current feedback circuit 6, dc coil 3 electric currents are provided by current feedback circuit 6, the control signal receiving terminal of current feedback circuit 6 sends end with the control signal of controller 7 and is connected, and current feedback circuit 6 offers the current strength of dc coil 3 by controller 7 controls; The control mode that described controller 7 adopts embedded computer ARM and PLC to jointly control, described controller 7 is provided with the LCDs 10 that can show the adjustable scheme of reactor that sets in advance.
Operation principle of the present utility model is: at first, the controller 7 of Regulatable reactor receives voltage signal and the current signal of being gathered from AC coil by voltage transformer 8 summation current transformers 9, controller 7 according to the reactance value of the calculated signals reactor that receives and and LCDs 10 on the adjustable scheme of importing in advance of reactor that shows compare, the difference signal that obtains is passed to current feedback circuit 6, current feedback circuit 6 is according to the size of current on the signal controlling dc coil 3, thereby the excitation that changes iron core makes reactor reach optimum state in various operational versions.
The magnetic flux that AC coil of the present utility model produces is because the three-phase equilibrium principle, induced electromotive force in dc coil not, and the magnetic flux that dc coil produces produces D.C. magnetic biasing respectively in three iron cores.
Claims (4)
1. Regulatable reactor, comprise controller (7), current feedback circuit (6), three independences and adjacent separately iron core (1a), (1b), (1c), it is characterized in that being wound with respectively on described three independent iron cores (1a), (1b), (1c) three groups of independently AC coil (2a), (2b), (2c), be wound with one group of dc coil (3) on described three independent iron cores (1a), (1b), (1c) jointly, described dc coil (3) is electrically connected with described current feedback circuit (6), and described current feedback circuit (6) is connected with described controller (7) by control signal wire.
2. Regulatable reactor according to claim 1, it is characterized in that described dc coil (3) is composed in series through the interchange diode (4) of drawing up mutually by being around in three grades of sub-dc coils (3a) on three independent iron cores (1a), (1b), (1c), (3b), (3c), described three grades of sub-dc coils (3a), (3b), (3c) are parallel with fly-wheel diode (5a), (5b), (5c) respectively.
3. Regulatable reactor according to claim 1, independently AC coil (2a), (2b), (2c) are parallel with voltage transformer (8) respectively and are in series with current transformer (9) to it is characterized in that described three groups, described voltage transformer (8) is connected with controller (7) by holding wire, and described current transformer (9) is connected with controller (7) by holding wire.
4. Regulatable reactor according to claim 1 is characterized in that described controller (7) comprises embedded computer ARM and PLC, and described controller (7) is provided with the LCDs (10) that can show the adjustable scheme of reactor that sets in advance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200283975U CN201156467Y (en) | 2008-02-28 | 2008-02-28 | Tunable reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200283975U CN201156467Y (en) | 2008-02-28 | 2008-02-28 | Tunable reactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201156467Y true CN201156467Y (en) | 2008-11-26 |
Family
ID=40104244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200283975U Expired - Fee Related CN201156467Y (en) | 2008-02-28 | 2008-02-28 | Tunable reactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201156467Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102148094A (en) * | 2010-02-08 | 2011-08-10 | 芮骏 | Direct-current excitation controlled saturable reactor |
-
2008
- 2008-02-28 CN CNU2008200283975U patent/CN201156467Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102148094A (en) * | 2010-02-08 | 2011-08-10 | 芮骏 | Direct-current excitation controlled saturable reactor |
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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 |
Owner name: SHAANXI YINGQIANG ELECTRONICAL AUTO-CONTROL CO., L Free format text: FORMER OWNER: ZHANG HAO Effective date: 20101025 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 710048 NO.1, 1/F, MIDDLE UNIT, FAMILY LIVING BUILDING, LIGHT INDUSTRY DESIGN INSTITUTE, DOUFU LANE, CHANGLEFANG, XI AN CITY, SHAANXI PROVINCE TO: 710054 16/F, TOWER A, JINGRUNHUAYUAN, NO.1A, ANXI STREET, XI AN CITY |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20101025 Address after: 710054 Xi'an City, Anxi Street No. 1 Jing Run garden A block 16 layer Patentee after: SHAANXI YINGQIANG ELECTRICAL AUTO-CONTROL CO., LTD. Address before: 710048, No. 1, No. 1, floor, building, building, family house, light palace Design Institute, Changle, Shaanxi, Xi'an Patentee before: Zhang Hao |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081126 Termination date: 20150228 |
|
| EXPY | Termination of patent right or utility model |