CN203103970U - Magnetically controlled reactor applied to power grid reactive power compensation - Google Patents
Magnetically controlled reactor applied to power grid reactive power compensation Download PDFInfo
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- CN203103970U CN203103970U CN 201320034516 CN201320034516U CN203103970U CN 203103970 U CN203103970 U CN 203103970U CN 201320034516 CN201320034516 CN 201320034516 CN 201320034516 U CN201320034516 U CN 201320034516U CN 203103970 U CN203103970 U CN 203103970U
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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
- Y02E40/30—Reactive power compensation
Abstract
The utility model relates to a magnetically controlled reactor applied to power grid reactive power compensation. The magnetically controlled reactor applied to power grid reactive power compensation comprises a reactor, a thyristor, a power supply module, an energy taking module, a photoelectric interface module, a controller which is connected with the photoelectric interface module and a trigger module which is located between the thyristor gate and the photoelectric interface module. The power supply module comprises a transformer and a first diode. The voltage from mains supply undergoes step-down of the transformer and then undergoes positive half cycle removing of the first diode, and thus direct current voltage is acquired. A branch which is formed by connecting an eighth resistor, a ninth resistor and a fifth capacitor in series is connected with the input end of the transformer, wherein the eighth resistor and the ninth resistor are connected in parallel. The photoelectric interface module is used for converting a light pulse signal from the controller into a synchronous current signal. According to the utility model, the magnetically controlled reactor has the advantages of precise trigger, good stability and low power consumption, and can prevent the thyristor from being damaged by oscillation produced by power supply voltage mutation.
Description
Technical field
The utility model relates to a kind of magnet controlled reactor that is used for electric network reactive compensation, belongs to the magnet controlled reactor technical field.
Background technology
The thyristor power model of high-voltage great-current is a kind of high pressure valve photoelectricity triggering system, can be used in transformer station and the power distribution network.
In order to satisfy the requirement of remote big capacity transmission of electric energy in recent years, transmission voltage is more and more higher; The scale of electric power system is increasing, the energy output sustainable growth; Show outstanding problem day because the lack of uniformity of China's energy and Load distribution, the dynamic reactive power in the electrical network support, the power delivery ability is restricted.Owing to a large amount of uses of large capacity single phase load and unbalanced load, the three-phase imbalance problem of electrical network is day apparent giving prominence to also simultaneously.For administering the problems referred to above, in electric power system, to introduce reactive power compensator and carry out reactive power compensation, magnet controlled reactor (MCR) is to use always always, it is bringing into play important effect aspect dynamic reactive support, the improvement electrical network three-phase imbalance.Compare with active equipment, it is having huge advantage aspect stability and the compensation capacity.Wherein, the reliable triggering of thyristor is one of key technology of whole device.Thyristor triggering mode commonly used at present has electromagnetism triggering mode, photoelectricity triggering mode and light triggering mode.Traditional electromagnetism triggering mode generally adopts pulse transformer to form the isolation of high electronegative potential, and the simultaneity of pulse, accuracy are difficult to satisfy the series-parallel requirement of high-pressure system device.
Summary of the invention
The purpose of this utility model provides a kind of magnet controlled reactor that is used for electric network reactive compensation, and this magnet controlled reactor has characteristics such as trigger accurately, good stability, power consumption are little, and can prevent that the vibration that supply voltage sudden change produces from damaging thyristor.
For achieving the above object, the technical solution adopted in the utility model is: a kind of magnet controlled reactor that is used for electric network reactive compensation, comprise reactor and thyristor, be used for and be converted to galvanic power module from grid alternating current, get energy module, optic electric interface module, the controller that is connected to the optic electric interface module and the trigger module between described gate circuit transistor gate and optic electric interface module; Described power module comprises transformer and the 1st diode, described transformer will from after the voltage step-down of civil power again through described the 1st diode
Remove positive half cycle and obtain direct voltage, a branch road by the 8th resistance in parallel and the 9th resistance and the 5th capacitances in series is connected to the input of transformer; By getting of first voltage-stabiliser tube, second voltage-stabiliser tube series connection can module in the first voltage-stabiliser tube output as first output, the second voltage-stabiliser tube output is as second output;
Described trigger module is used to receive the synchronizing current signal from the optic electric interface module, it comprise series connection by the 2nd triode, the preamplifying circuit that the 3rd triode is formed and by the 1st triode, the back level amplifying circuit that the 2nd diode and the 3rd diode are composed in series, described the 2nd triode, the 3rd triode base stage separately is connected to described second output of getting the energy module through the 4th resistance and the 3rd resistance respectively, the tie point of described the 2nd diode cathode and the 3rd diode cathode is connected to the described gate circuit transistor gate of stating, drive the 2nd triode from the synchronizing current signal of optic electric interface module successively after by the 3rd its conducting of diode base drive, the 1st triode conducting enters the thyristor gate leve thereby the output of the tie point by the 2nd diode and the 3rd diode is used to control the synchronous triggering signal of reactor switching angle;
Described optic electric interface module, the light pulse signal that is used for fetching self-controller is converted into the synchronizing current signal.
Further improvement project is as follows in the technique scheme:
1, in the such scheme, one the 1st electric capacity and described transformers connected in parallel are used for filtering and exchange interference.
2, in the such scheme, cross-over connection has the 2nd electric capacity between described first output and the ground connection, and cross-over connection has the 3rd electric capacity between second output and the ground connection.
Because the technique scheme utilization, the utility model compared with prior art has following advantage and effect:
The utility model magnet controlled reactor trigger equipment, it is positioned at the electrical network hot side, gate circuit transistor gate and optic electric interface module are provided with trigger module, use optical fiber to finish the isolation of signal transmission and high electronegative potential, all are better than the equipment of electromagnetism triggering mode on pulse quality still is isolation performance; Secondly, the utility model circuit design can obtain the working power stable, that ripple is little by the slave unit primary side, in more abominable electromagnetic environment, overcome the strong electromagnetic that circuit is caused of cut-offfing of big electric current in the main circuit, thyristor, have certain interference free performance; Once more, the utility model trigger equipment, its branch road by the 8th resistance in parallel and the 9th resistance and the 5th capacitances in series is connected to the input of transformer, can prevent that the vibration that supply voltage sudden change produces from damaging thyristor.
Description of drawings
Accompanying drawing 1 is used for the magnet controlled reactor system configuration schematic diagram of electric network reactive compensation for the utility model;
Accompanying drawing 2 is the utility model power module structural representation;
Accompanying drawing 3 is got energy modular structure schematic diagram for the utility model;
Accompanying drawing 4 is the utility model trigger module structural representation.
In the above accompanying drawing: 1, reactor; 2, thyristor; 3, power module; 4, get the energy module; 5, optic electric interface module; 6, controller; 7, trigger module.
Embodiment
Below in conjunction with drawings and Examples the utility model is further described:
Embodiment: a kind of magnet controlled reactor that is used for electric network reactive compensation comprises reactor 1 and thyristor 2; Also comprise and be used for and be converted to galvanic power module 3 from grid alternating current, get energy module 4, optic electric interface module 5, the controller 6 that is connected to optic electric interface module 5 and the trigger module 7 between described thyristor 2 gate poles and optic electric interface module 5; Described power module 3 comprises transformer T1 and the 1st diode D1, described transformer T1 will obtain direct voltage from removing positive half cycle through described the 1st diode D1 again after the voltage step-down of civil power, and a branch road by the 8th resistance in parallel and the 9th resistance and the 5th capacitances in series is connected to the input of transformer T1;
By getting of the first voltage-stabiliser tube U1, second voltage-stabiliser tube U2 series connection can module 4 in the first voltage-stabiliser tube U1 output as first output, the second voltage-stabiliser tube U2 output is as second output;
Described trigger module 7 is used to receive the synchronizing current signal from optic electric interface module 5, it comprise series connection by the 2nd triode Q2, the preamplifying circuit that the 3rd triode Q3 forms and by the 1st triode Q1, the back level amplifying circuit that the 2nd diode D2 and the 3rd diode D3 are composed in series, described the 2nd triode Q2, the 3rd triode Q3 base stage separately is connected to described second output of getting energy module 4 through the 4th resistance R 4 and the 3rd resistance R 3 respectively, described the 2nd diode D2 tie point anodal and the 3rd diode D3 positive pole is connected to described thyristor 2 gate poles of stating, drive the 2nd triode Q2 from the synchronizing current signal of optic electric interface module 5 successively after by the 3rd its conducting of diode D3 base drive, the 1st triode Q1 conducting enters thyristor 2 gate leves thereby the output of the tie point by the 2nd diode D2 and the 3rd diode D3 is used to control the synchronous triggering signal of reactor 1 switching angle;
Described optic electric interface module 5, the light pulse signal that is used for fetching self-controller 6 is converted into the synchronizing current signal.
One the 1st capacitor C 1 is in parallel with described transformer T1, is used for filtering and exchanges interference.
Cross-over connection has that cross-over connection has the 3rd capacitor C 3 between the 2nd capacitor C 2, the second outputs and the ground connection between above-mentioned first output and the ground connection.
The magnet controlled reactor course of work that present embodiment is used for electric network reactive compensation is as follows.
Power module is realized hypotensive effect by a little transformer module T1, and removing positive half cycle by diode D1 is direct voltage, and capacitor C 1 is carried out filter action.
Wherein get the energy module by voltage-stabiliser tube U1, U2, capacitor C 2, C3 and resistance R 1, R2 and two light-emitting diodes constitute, and the direct voltage that power module produces produces 12V voltage through U1, are that triode Q1, Q2 power after C2 filtering.The 5V voltage that the voltage that U1 produces produces through U2 after capacitor C 3 filtering, for optical receiver HFBR-2412 and Q3 power supply and draw high Q3 voltage, LED2 connect with R2 instigate the 5V power supply get the energy result.
Wherein the optic electric interface module mainly is made of core devices HFBR-2412 optical receiver, and the reception light pulse is converted into the signal of telecommunication and exports with positive logic.
Wherein trigger module comprises preamplifying circuit and back level amplifying circuit; Preamplifying circuit bag NPN type triode Q3, Q2 and base resistance R3, R4; Back level amplifying circuit comprises positive-negative-positive switching tube Q1, resistance R 5, resistance R 6, diode D2, D3 etc.The signal that comes out in the optical receiver enters its conducting of Q3 base drive, and follow-up Q2 is conducting thereupon also, thereby positive-negative-positive switching tube Q1 conducting enters the thyristor gate leve through diode D2 output synchronous triggering signal.
The utility model is in operation, and power module is from hot side, and promptly the equipment primary side is obtained the required power supply of system works; Described optic electric interface module receives the light pulse from the control system optical-fibre channel, i.e. light signal, and be converted into the signal of telecommunication; By the subsequent triggers circuit weak pulse is converted to the satisfied requirement that triggers towards the signal amplification, the current impulse of enough amplitudes is arranged, output to the gate leve of thyristor, be used for triggering the thyristor valve group.
Owing to adopted above technical scheme, the beneficial effects of the utility model are: the operating current of (1) circuit board own is little, low in energy consumption, and main circuit work is not had influence substantially; (2) owing to adopted the photoelectricity triggering mode to realize synchronism, accuracy and the promptness of triggering signal; (3) cost is low, and hardware circuit is simple, is easy to realize.In a word, can be useful for well in the empty reactor of magnetic (MCR), solve its key problem based on the utility model of said structure.Lifting for the performance of magnet controlled reactor type reactive-load compensator has great importance.
The foregoing description only is explanation technical conceive of the present utility model and characteristics, and its purpose is to allow the personage who is familiar with this technology can understand content of the present utility model and enforcement according to this, can not limit protection range of the present utility model with this.All equivalences of being done according to the utility model spirit change or modify, and all should be encompassed within the protection range of the present utility model.
Claims (3)
1. a magnet controlled reactor that is used for electric network reactive compensation comprises reactor (1) and thyristor (2); It is characterized in that: also comprise be used for be converted to galvanic power module (3) from grid alternating current, getting can module (4), optic electric interface module (5), the controller (6) that is connected to optic electric interface module (5) with
And be positioned at trigger module (7) between described thyristor (2) gate pole and the optic electric interface module (5); Described power module (3) comprises transformer (T1) and the 1st diode (D1), described transformer (T1) will obtain direct voltage from removing positive half cycle through described the 1st diode (D1) again after the voltage step-down of civil power, and a branch road by the 8th resistance in parallel and the 9th resistance and the 5th capacitances in series is connected to the input of transformer (T1);
By getting of first voltage-stabiliser tube (U1), second voltage-stabiliser tube (U2) series connection can module (4) in first voltage-stabiliser tube (U1) output as first output, second voltage-stabiliser tube (U2) output is as second output;
Described trigger module (7) is used for receiving the synchronizing current signal from optic electric interface module (5), it comprise series connection by the 2nd triode (Q2), the preamplifying circuit that the 3rd triode (Q3) is formed and by the 1st triode (Q1), the back level amplifying circuit that the 2nd diode (D2) and the 3rd diode (D3) are composed in series, described the 2nd triode (Q2), the 3rd triode (Q3) base stage separately is connected to described second output of getting energy module (4) through the 4th resistance (R4) and the 3rd resistance (R3) respectively, described the 2nd diode (D2) tie point anodal and that the 3rd diode (D3) is anodal is connected to described thyristor (2) gate pole of stating, drive the 2nd triode (Q2) from the synchronizing current signal of optic electric interface module (5) successively after by its conducting of the 3rd diode (D3) base drive, the 1st triode (Q1) conducting enters thyristor (2) gate leve thereby the output of the tie point by the 2nd diode (D2) and the 3rd diode (D3) is used to control the synchronous triggering signal of reactor (1) switching angle;
Described optic electric interface module (5), the light pulse signal that is used for fetching self-controller (6) is converted into the synchronizing current signal.
2. magnet controlled reactor according to claim 1 is characterized in that: one the 1st electric capacity (C1) is in parallel with described transformer (T1), is used for filtering and exchanges interference.
3. magnet controlled reactor according to claim 1 is characterized in that: cross-over connection has the 2nd electric capacity (C2) between described first output and the ground connection, and cross-over connection has the 3rd electric capacity (C3) between second output and the ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320034516 CN203103970U (en) | 2013-01-23 | 2013-01-23 | Magnetically controlled reactor applied to power grid reactive power compensation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320034516 CN203103970U (en) | 2013-01-23 | 2013-01-23 | Magnetically controlled reactor applied to power grid reactive power compensation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203103970U true CN203103970U (en) | 2013-07-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320034516 Expired - Fee Related CN203103970U (en) | 2013-01-23 | 2013-01-23 | Magnetically controlled reactor applied to power grid reactive power compensation |
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| Country | Link |
|---|---|
| CN (1) | CN203103970U (en) |
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2013
- 2013-01-23 CN CN 201320034516 patent/CN203103970U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130731 Termination date: 20190123 |
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| CF01 | Termination of patent right due to non-payment of annual fee |