CN203135785U - Magnetic control reactor - Google Patents
Magnetic control reactor Download PDFInfo
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- CN203135785U CN203135785U CN 201220498011 CN201220498011U CN203135785U CN 203135785 U CN203135785 U CN 203135785U CN 201220498011 CN201220498011 CN 201220498011 CN 201220498011 U CN201220498011 U CN 201220498011U CN 203135785 U CN203135785 U CN 203135785U
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- rectifier bridge
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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
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Abstract
The utility model relates to a magnetic control reactor, which comprises a reactor winding and a rectifier bridge circuit, wherein the reactor winding comprises an iron core and a coil wound around the iron core; and an output end of the rectifier bridge circuit is connected with the coil in the reactor winding, and the rectifier bridge circuit generates a working current and loads the working current onto the coil. The magnetic control reactor can realize high-speed excitation without improving the tap voltage and arranging additional excitation windings.
Description
Technical field
The utility model relates to a kind of reactor device of reactive power compensation, relates in particular to a kind of magnet controlled reactor.
Background technology
(Magnetically Controlled Reactor, MCR), as the state type reactive power compensator one type originates from magnetic amplifier and saturable reactor, but with saturable reactor essential distinction is arranged on structure and performance magnet controlled reactor.The technology of magnet controlled reactor is to obtain breaking through in the former Soviet Union, and it is domestic in being introduced at the end of last century, have reliability height, loss low, take up an area of less and harmonic pollution little, control advantages such as easy, be widely used in the industries such as mine, metallurgy and electric power, become the main selection that substitutes thyristor-controlled reactor.
The basic functional principle of magnet controlled reactor is can change magnetic flux on the iron core by the direct current in the control reactor winding, thereby by changing the saturation that the magnetic flux that passes through on the core of reactor changes iron core, thereby change the sense value of reactor, in order to realize the variation of output reactive power.In order to realize bigger saturation with less current, magnet controlled reactor adopts local saturation technique, have the sectional area of an iron leg core to be reduced in whole excitation, thereby be easy to reach magnetic saturation, and other parts all is in linear zone.This mode has significantly been improved power consumption, noise and the harmonic wave performance index of reactor.The manufacturing process of MCR is consistent substantially with transformer, and its cost, manufacturability and reliability are all close to transformer, and easy maintenance is fit to be applied to the demanding occasions of environmental suitability such as electric power system very much.Magnet controlled reactor except can be used for electric power system with the ability to transmit electricity of improving electrical network, improve grid voltage quality etc., also can be used for reactive power compensation, soft starter for motor of industrial factories and miness etc., have very big application value.
MCR has been widely used in industries such as electric power, mine, metallurgy at present, and along with the continuous development of new forms of energy industry, MCR type reactive power compensator has also obtained using widely in the new forms of energy power station simultaneously.But along with electrical network to improving constantly that the new forms of energy industry is incorporated into the power networks and requires, the response time index request of reactive power compensator is more and more stricter.And the excitation response time of traditional MCR type reactive power compensator is longer, more and more can't satisfy the strict requirement of being incorporated into the power networks.In addition, along with the expansion of range of application, at the scene in the face of the rapid fluctuations load, response speed becomes the key factor of restriction MCR development.
A kind of mode that improves the MCR response speed at present is to improve the body tap voltage, but this mode can only improve quick-response excitation speed on the one hand, and this mode has improved the requirement of withstand voltage to controllable devices, has weakened the advantage of MCR, has reduced the advantage in the superhigh pressure applications.Another kind of mode then is to improve response speed by the mode that winding is overlapped in extra increase by, yet this mode has increased cost and the manufacturing complexity of equipment, neither comparatively desirable selection.
The utility model content
The purpose of this utility model provides a kind of magnet controlled reactor, can realize quick-response excitation, and need not to improve tap voltage and extra excitation winding.
For achieving the above object, the utility model provides a kind of magnet controlled reactor, and described magnet controlled reactor comprises:
Reactor winding, described reactor winding comprise iron core and the coil around the described iron core;
Rectifier circuit, the output of described rectifier circuit is connected with coil in the described reactor winding, and described rectifier circuit produces the forward high pressure and also is carried on the described coil.
Compared with prior art, the magnet controlled reactor that the utility model provides can be realized quick-response excitation, and does not need to improve tap voltage and increase extra excitation winding.Through actual verification, the response time of the response time of magnet controlled reactor of the present utility model than existing magnet controlled reactor shortened 3-10 doubly, the Whole Response time can shorten in the 30ms, can satisfy the new forms of energy power station to the requirement of response speed, be applicable to the various industrial applications that need fast reactive compensation response, for example, supergrid, superhigh pressure scene and the occasions such as scene that need respond fast, alternative traditional TCR(thyristor-controlled reactor) type state type reactive power compensator.
Description of drawings
The circuit theory diagrams of the magnet controlled reactor that Fig. 1 provides for the utility model embodiment one;
The circuit theory diagrams of a kind of bridge type semi-control rectifier bridge that Fig. 2 provides for the utility model embodiment one;
The circuit theory diagrams of a kind of bridge-type full-controlled rectifier bridge that Fig. 3 provides for the utility model embodiment one;
The circuit theory diagrams of the magnet controlled reactor that Fig. 4 provides for the utility model embodiment two;
A kind of circuit theory diagrams that force breaking circuit that Fig. 5 provides for the utility model embodiment two;
The circuit theory diagrams of the magnet controlled reactor that Fig. 6 provides for the utility model embodiment three;
The circuit theory diagrams of the magnet controlled reactor that Fig. 7 provides for the utility model embodiment four.
Embodiment
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
The magnet controlled reactor that the utility model provides is the single excitation winding MCR type magnet controlled reactor that forces active excitation control, the operation principle of its field-forcing control is: use the field-forcing control unit that the direct current of reactor winding body is directly controlled, can increase excitation intensity as required fast, thereby realize quick-response excitation.Wherein, the field-forcing control unit is by rectifier circuit and/or force breaking circuit to realize, by at rectifier circuit or force controllable devices is set in the breaking circuit, and the control signal of the control system by application scenarios is controlled the on off operating mode of those controllable devices under different conditions, in order to change the direct current of reactor winding, realize quick-response excitation.
Embodiment one
Fig. 1 is the circuit theory diagrams of the magnet controlled reactor that provides of present embodiment, as shown in Figure 1, magnet controlled reactor of the present utility model comprises: reactor winding and rectifier circuit, the output of rectifier circuit coil direct and in the reactor winding is connected, and constitutes the loop.
The reactor winding comprises two iron cores, is wound with two groups of coils on each described iron core, at an iron core coil LA, coil LD is arranged, and at the another one iron core coil LB, coil LC is arranged.The end of incoming cables of coil LA leading-out terminal and coil LB links to each other, and the leading-out terminal of coil LC links to each other with the end of incoming cables of coil LD, and four groups of coils are the alter-parallel structure.There is one group of coil to be provided with first tap on each described iron core, draw first tap 5 at the leading-out terminal of coil LA, the leading-out terminal of coil LC is drawn first tap 6, first tap 5 links to each other with an end of rectifier circuit output, first tap 6 links to each other with the other end of rectifier circuit output, constitutes the loop.The utilization of reactor winding changes the magnetic flux of iron core by the current strength of coil.
Rectifier circuit comprises the first rectifier bridge RB1 and the second rectifier bridge RB2.The output parallel connection of the first rectifier bridge RB1 and the second rectifier bridge RB2 is connected in output 7 and output 8, and output 7 is connected with first tap 6 with first tap 5 of reactor winding respectively with output 8.
The first rectifier bridge RB1 is for generation of operating current and offer described coil, the direct current when providing operate as normal for described reactor winding.
The second rectifier bridge RB2 is for generation of the forward high pressure and be carried on the described coil, thereby makes described iron core quick-response excitation, and then increases the capacity of the magnetic flux of described iron core fast.
What deserves to be explained is that the second rectifier bridge RB2 can also and be carried on the described coil for generation of high back voltage, thereby makes the electric current of described coil reduce rapidly, accelerate described iron core demagnetization.
The first rectifier bridge RB1 can be the bridge type semi-control rectifier bridge, also can be bridge-type full-controlled rectifier bridge.The second rectifier bridge RB2 is specially bridge-type full-controlled rectifier bridge.
Fig. 2 is the circuit theory diagrams of a kind of bridge type semi-control rectifier bridge of providing of present embodiment, as shown in Figure 2, the bridge type semi-control rectifier bridge comprises diode D3, the diode D4 of isolating transformer T1, controllable devices S1, controllable devices S2 and two non-controllable devices, wherein controllable devices S1 and diode D3 series connection, controllable devices S2 and diode D4 series connection, and constitute the bridge rectifier structure.The two ends of isolating transformer T1 secondary winding are connected to the intermediate connection point of intermediate connection point, controllable devices S2 and the diode D4 series connection of controllable devices S1 and diode D3 series connection respectively.The two ends of controllable devices S1 and diode D3 series connection are connected with the two ends of diode D4 series connection with controllable devices S2, and link to each other with the two ends of diode D1, as output 7 and the output 8 of rectifier bridge.Wherein, diode D1 shields, diode can certainly be on each controllable devices in parallel.
Fig. 3 is the circuit theory diagrams of a kind of bridge-type full-controlled rectifier bridge of providing of present embodiment, and as shown in Figure 3, bridge-type full-controlled rectifier bridge comprises isolating transformer T2, controllable devices S3, controllable devices S4, controllable devices S5, controllable devices S6 and diode D2.Controllable devices S3, controllable devices S4, controllable devices S5, controllable devices S6 connect in twos, constitute the bridge rectifier structure.The two ends of isolating transformer T2 secondary winding are connected to the intermediate connection point of intermediate connection point, controllable devices S4 and the controllable devices S6 of controllable devices S3 and controllable devices S5 respectively; Controllable devices S3 is connected with the two ends of controllable devices S6 series connection with controllable devices S4 with the two ends of controllable devices S5 series connection, and links to each other with the two ends of diode D2, as output 7 and the output 8 of rectifier bridge.Wherein, diode D2 shields, diode can certainly be on each controllable devices in parallel.
Controllable devices can but be not limited to adopt controllable silicon, GTO(gate level turn-off thyristor)/the IGBT(bipolar transistor that insulate), the IGCT(integrated gate commutated thyristor) or IEGT(electronics IEGT) etc. switching device.
The control utmost point of each controllable devices is connected with the control system of application scenarios, and control system is controlled the different on off operating mode of each controllable devices by given control signal.
When operate as normal, system needs the first rectifier bridge RB1 that the operating current of direct current is provided.At this moment, the controllable devices on the first rectifier bridge RB1 needs conducting, makes isolating transformer T1 can be connected to first tap 5 and first tap 6, and this moment, the second rectifier bridge RB2 did not work, and its controllable devices is in closed condition.Isolating transformer T1 is the power supply of an operate as normal, and the voltage when providing operate as normal for magnet controlled reactor is to provide the direct current of reactor winding.
If the first rectifier bridge RB1 adopts bridge-type full-controlled rectifier bridge, control system is controlled among the first rectifier bridge RB1 the conducting state of the controllable devices of angular dependence identical, if namely controllable devices S4 is conducting state, controllable devices S5 is conducting state also, and vice versa.The on off operating mode of the controllable devices of control system by controlling the second rectifier bridge RB2 flows with output DC.If the first rectifier bridge RB1 adopts the bridge type semi-control rectifier bridge, the on off operating mode of controllable devices S1 and controllable devices S2 is opposite.
When system needed quick-response excitation, the second rectifier bridge RB2 provided a forward high pressure.At this moment, the controllable devices that the second rectifier bridge RB2 goes up forward needs conducting, makes isolating transformer T2 can be connected to first tap 5 and first tap 6, and this moment, the first rectifier bridge RB1 does not work, and its controllable devices is in closed condition.Isolating transformer T2 is a high voltage source, when the rectifier bridge forward conduction, for magnet controlled reactor provides the forward high pressure, impels the capacity of reactor to rise rapidly, realizes quick-response excitation.
If the second rectifier bridge RB2 adopts bridge-type full-controlled rectifier bridge, the conducting state to the controllable devices of angular dependence among the second rectifier bridge RB2 is identical, if namely controllable devices S4 is conducting state, controllable devices S5 is conducting state also, and vice versa.Control system is selected wherein that group controllable devices conducting of forward, another group is closed condition, to control second rectifier bridge RB2 output forward high pressure, make the electric current of output increase sharply, iron core to the reactor body increases excitation, it is saturated to make that the small bore iron core enters rapidly, impels the capacity of reactor to rise rapidly, realizes the effect of quick-response excitation.Reach re-set target when control system detects the body input capacity, the second rectifier bridge RB2 quits work, and the first rectifier bridge RB1 provides the exciting current that need keep, finishes quick-response excitation.
When system needed demagnetization fast, the second rectifier bridge RB2 provided a high back voltage.At this moment, the second rectifier bridge RB2 goes up reverse controllable devices needs conducting, makes isolating transformer T2 can be connected to first tap 5 and first tap 6, and this moment, the first rectifier bridge RB1 does not work, and its controllable devices is in closed condition.Control system is selected that reverse group controllable devices conducting, another group is closed condition, to control second rectifier bridge RB2 output high back voltage, when this high back voltage is added on the reactor winding, make the electric current of flowing through coil LA, coil LB, coil LC and coil LD be reduced to the value that needs rapidly, finish quick demagnetization.
Embodiment two
Fig. 4 is the circuit theory diagrams of the magnet controlled reactor that provides of present embodiment, and as shown in Figure 4, magnet controlled reactor of the present utility model comprises: the reactor winding, force breaking circuit HS and rectifier circuit.Only be with the difference of embodiment one, present embodiment also comprises and forces breaking circuit HS, be connected between the coil of the output of described rectifier circuit and described reactor winding, force breaking circuit HS to be used for when demagnetizing fast, disconnecting the electric current of described rectifier circuit output, feasible electric current by described coil reduces rapidly, and described iron core is demagnetized rapidly.
Fig. 5 is a kind of circuit theory diagrams that force breaking circuit HS that present embodiment provides, and as shown in Figure 5, forces breaking circuit HS to comprise controllable devices HS1, controllable devices HS2, isolating transformer T3 and buffering element HC2.
Isolating transformer T3 and diode HD1 and resistance HR are in series, one end of isolating transformer T3 secondary winding connects the anode of diode HD1, the other end connects the end of electric capacity HC1, the negative electrode of diode HD1 is connected with the other end of electric capacity HC1 by resistance HR, electric capacity HC1 is connected with the anode of controllable devices HS2, the other end of electric capacity HC1 is connected with the anode of controllable devices HS1, and be connected with the output 7 of described rectifier circuit, the negative electrode of controllable devices HS1 and controllable devices HS2 is connected as the output 5 that forces breaking circuit HS, can be connected with first tap 5 of coil.The output 8 of described rectifier circuit directly is connected with the output 6 that forces breaking circuit HS, and output 6 is connected with first tap 6 of coil.For avoiding the higher back-pressure in the demagnetization process, high pressure is absorbed and cushion by buffer element.The end of buffer element HC2 is connected with the anode of diode HD2, and the negative electrode of diode HD2 is connected with output 5, and the other end of buffer element HC2 is connected with output 6.
Controllable devices can but be not limited to adopt switching devices such as controllable silicon, GTO/IGBT, IGCT or IEGT.The control utmost point of each controllable devices also is connected with the control system of application scenarios, and control system is controlled the different on off operating mode of each controllable devices by given control signal.
Buffer element HC2 can but be not limited to adopt electric capacity, resistance, lightning arrester or other overvoltage protectors, in order to absorb and to be buffered in the higher back-pressure that produces in the demagnetization process.
When system is in operate as normal or quick-response excitation, controllable devices HS1 is in conducting state, controllable devices HS2 is in closed condition, being equivalent to rectifier circuit is connected with first tap 6 with first tap 5 of reactor winding, thereby when operate as normal, the operation principle of the first rectifier bridge RB1 is identical with operation principle among the embodiment one, when system needs quick-response excitation, the operation principle that the second rectifier bridge RB2 provides a forward high pressure also with embodiment one in identical.
When system needs demagnetization fast, controllable devices HS2 begins conducting state, make isolating transformer T3 apply very high backward voltage at the controllable devices HS1 of parallel connection, thereby the electric current that flows through on the controllable devices HS1 is reduced to the value that needs rapidly, close controllable devices HS1 this moment again, finishes quick demagnetization.At this moment, the second rectifier bridge RB2 can provide high back voltage to force breaking circuit HS1 to demagnetize fast in order to cooperation, perhaps also can be in closed condition.Generally speaking, the voltage of isolating transformer T3 is between the voltage of the voltage of isolating transformer T1 and isolating transformer T2.
Embodiment three
Fig. 6 is the circuit theory diagrams of the magnet controlled reactor that provides of present embodiment, and as shown in Figure 6, magnet controlled reactor of the present utility model comprises: the reactor winding, force breaking circuit HS and rectifier circuit.Only be that with the difference of embodiment two the reactor winding that present embodiment adopts is non-common reactor winding body fast, the utility model is not restricted the concrete form that the reactor winding adopts.
Compare with embodiment two, the reactor winding of present embodiment is also drawn second tap 1 in the centre of coil LA, second tap 3 is drawn in the centre of coil LD, be connected to controllable devices MS1 between second tap 1 and second tap 3, draw second tap 2 in the centre of coil LC, in the middle of coil LB, draw between second tap, 4, the second taps 2 and second tap 4 and be connected to controllable devices MS2, and the conducting direction of controllable devices MS1 and controllable devices MS2 is opposite.Between first tap 5 and second tap 6, also be provided with a fly-wheel diode MD.
Controllable devices can but be not limited to adopt switching devices such as controllable silicon, GTO/IGBT, IGCT or IEGT.The control utmost point of each controllable devices also is connected with the control system of application scenarios, and when operate as normal, control system is controlled the different on off operating mode of each controllable devices by control signal.
When system was in quick-response excitation or demagnetizes fast, two controllable devices and fly-wheel diode were in failure state, and at this moment, concrete operation principle is identical with embodiment two, repeats no more in this.
Embodiment four
Fig. 7 is the circuit theory diagrams of the magnet controlled reactor that provides of present embodiment, and as shown in Figure 7, magnet controlled reactor of the present utility model comprises: the reactor winding, force breaking circuit HS and rectifier circuit.Compare with embodiment two, the rectifier circuit that present embodiment adopts only comprises the first rectifier bridge RB1.
At this moment, the first rectifier bridge RB1 can control output voltage by the angle of flow that changes controllable devices according to the instruction of control system as the controlled rectification bridge.Provide one during than high power supply voltage when isolating transformer T1 gives the first rectifier bridge RB1, because the difference of the angle of flow can make the lower voltage of first rectifier bridge RB1 output, thereby keep lower output current, make reactor be operated in the normal regulating state.When needs quick-response excitation, change the angle of flow, can make first rectifier bridge RB1 output high voltage, thereby export big electric current rapidly, make the reactor output capacity change rapidly.When needs demagnetize fast, utilize the value of forcing breaking circuit HS to make that electric current is reduced to rapidly to be needed, perhaps, change the angle of flow of controllable devices, can make the higher reverse voltage of first rectifier bridge RB1 output, thereby reduce output current rapidly, make reactor demagnetize rapidly.Thereby, in the present embodiment, force breaking circuit HS also can omit.
Need to prove, for fail safe and the stability that improves magnet controlled reactor, when adopting a rectifier bridge as the controlled rectification bridge, can improve fail safe and the stability of whole system by the exterior insulation measure that increases reactor winding body.
The magnet controlled reactor that the utility model provides is to can be applicable to reactive power compensation, high pressure soft starter and other application magnet controlled reactor device, can realize quick-response excitation, and not need to improve tap voltage and increase extra excitation winding.
Through calculating and actual verification, the response time of the response time of magnet controlled reactor of the present utility model than existing magnet controlled reactor shortened 3-10 doubly, the Whole Response time can shorten in the 30ms, can satisfy the new forms of energy power station to the requirement of response speed, be applicable to the various industrial applications that need fast reactive compensation response, for example, supergrid, superhigh pressure scene and the occasions such as scene that need respond fast, alternative traditional TCR(thyristor-controlled reactor) type state type reactive power compensator.
Above-described embodiment; the purpose of this utility model, technical scheme and beneficial effect are further described; institute is understood that; the above only is embodiment of the present utility model; and be not used in and limit protection range of the present utility model; all within spirit of the present utility model and principle, any modification of making, be equal to replacement, improvement etc., all should be included within the protection range of the present utility model.
Claims (9)
1. a magnet controlled reactor is characterized in that, described magnet controlled reactor comprises:
The reactor winding, described reactor winding comprises two iron cores, is wound with two groups of coils, four groups of coil alter-parallels on each described iron core;
In the rectifier circuit, two outputs of described rectifier circuit and described reactor winding on two iron cores the coil of alter-parallel be connected, described rectifier circuit produces the forward high pressure and also is carried on the described coil of alter-parallel.
2. magnet controlled reactor according to claim 1 is characterized in that, also be connected with controllable devices between two groups of described coils of each described iron core, and the conducting direction of two described controllable devices is opposite.
3. magnet controlled reactor according to claim 1 is characterized in that, described rectifier circuit comprises first rectifier bridge and second rectifier bridge in parallel.
4. magnet controlled reactor according to claim 3, it is characterized in that: described first rectifier bridge is specially bridge type semi-control rectifier bridge or bridge-type full-controlled rectifier bridge;
Described second rectifier bridge is specially bridge-type full-controlled rectifier bridge.
5. magnet controlled reactor according to claim 1, it is characterized in that: described magnet controlled reactor also comprises:
Force breaking circuit, between the described coil that forces output that breaking circuit is connected in described rectifier circuit and described reactor winding.
6. magnet controlled reactor according to claim 5, it is characterized in that: the described breaking circuit that forces comprises first controllable devices, second controllable devices, isolating transformer and buffering element;
Described first controllable devices is connected between the input of an output of described rectifier circuit and described coil;
Described second controllable devices and capacitances in series, and be connected in parallel with described first controllable devices;
The secondary winding of described isolating transformer is in parallel through first diode and resistance and described electric capacity;
Described buffer element is connected with two inputs of described coil through second diode.
7. according to claim 2 or 6 described magnet controlled reactors, it is characterized in that: described first controllable devices or second controllable devices are specially controllable silicon, gate level turn-off thyristor, insulation bipolar transistor, integrated gate commutated thyristor or electronics IEGT.
8. magnet controlled reactor according to claim 6, it is characterized in that: described buffer element is specially electric capacity, resistance or overvoltage protector.
9. magnet controlled reactor according to claim 8, it is characterized in that: described overvoltage protector is specially lightning arrester.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220498011 CN203135785U (en) | 2012-09-26 | 2012-09-26 | Magnetic control reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220498011 CN203135785U (en) | 2012-09-26 | 2012-09-26 | Magnetic control reactor |
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| CN203135785U true CN203135785U (en) | 2013-08-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220498011 Expired - Fee Related CN203135785U (en) | 2012-09-26 | 2012-09-26 | Magnetic control reactor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104485824A (en) * | 2015-01-08 | 2015-04-01 | 山东大学 | Multifunctional transformer with isolated magnetic control |
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2012
- 2012-09-26 CN CN 201220498011 patent/CN203135785U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104485824A (en) * | 2015-01-08 | 2015-04-01 | 山东大学 | Multifunctional transformer with isolated magnetic control |
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