CN207339252U - For quickly changing the transient reactance device of AC network middle impedance value - Google Patents
For quickly changing the transient reactance device of AC network middle impedance value Download PDFInfo
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- CN207339252U CN207339252U CN201721235811.5U CN201721235811U CN207339252U CN 207339252 U CN207339252 U CN 207339252U CN 201721235811 U CN201721235811 U CN 201721235811U CN 207339252 U CN207339252 U CN 207339252U
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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
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- 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
It the utility model is related to a kind of transient reactance device for being used to quickly change AC network middle impedance value.The purpose of this utility model is to provide a kind of simple in structure, rapid reaction, safe and reliable, usually running wastage is small and the transient reactance device for being used for quick change AC network middle impedance value of the current limliting positive effect when short trouble occurs.The technical solution of the utility model is：Kind is used for the transient reactance device for quickly changing AC network middle impedance value, it is characterised in that has：Air reactor；Moving armature core, corresponds with air reactor and sets, and initial position is located at outside the air reactor；Actuating mechanism, iron core-closed reactor is formed for being sent into the moving armature core in the air reactor from initial position according to relay protection signal；Resetting-mechanism, the moving armature core is sent back to initial position after being eliminated for short circuit malfunction.The utility model is suitable for electrical engineering automatic protection control field.
Description
Technical field
It the utility model is related to a kind of transient reactance device for being used to quickly change AC network middle impedance value.Suitable for electric
Engineering automatic protection control field.
Background technology
As net capacity constantly increases in modern power network, power grid short circuit currents already exceed 80kA, but current state
In the fertile most of high-voltage circuitbreaker of institute of inside and outside power equipment manufacturer, voltage class is specified 500kV and the above
Short circuit current flow is general only in below 63kA, and in low-voltage apparatus breaker, short circuit current flow also alreadys exceed 200kA, still, often
Rule low-voltage circuit breaker the ability for cut-offfing short circuit current flow be only 100kA level, this ability be difficult meet system needs cut-off compared with
The requirement of big short circuit current flow.Constantly strengthen with national network with continuous expand of net capacity, this contradiction can be increasingly
It is prominent.The suppression of grid short circuit electric current can be solved the problems, such as although with the method for changing electric network composition, but compromises electricity at the same time
The flexibility of network operation and economy, particularly as used for large-scale ships electric system concentrated load requirement when, can not be with
The mode of disjunction is run, and otherwise can not just carry out the operation of high-power load.Therefore, to limit system using quick reactor short
Road fault current has become the very urgent technical problem faced in modern power network development, this is to quick reactor
First kind demand occasion.
With super-pressure and extra-high voltage grid construction and development, for longer transmission line of electricity, in order to limit power frequency and behaviour
Make overvoltage, it is necessary to configure high-voltage shunt reactor on the line, but conventional high-voltage shunt reactor is unadjustable, works as circuit
Transmission power close to natural power or conveying bigger electric power when, if cannot adjust and exit for shunt reactor, will cause be
Voltage of uniting reduces, and influences electricity net safety stable level and power quality.Therefore, it is also urgently to need fast electric to this occasion
Anti- device device.
To solve the above problems, need it is a kind of it is simple in structure, increments of change is big, using reliable, rapidly moved (in 5ms)
State compensates electrical network parameter, ensures power grid security, the quick varactor device of stable operation.
Usual power grid to quick variable reactor to limit electric network fault when short circuit current flow in requirement it is as follows：
(1) during normal operation, current-limiting apparatus is in Low ESR or zero impedance state, and the active power and reactive power of system are damaged
Consume it is small, custom requirements power attenuation be less than 0.25% specified transmission capacity, have no effect to system (pressure drop zero)；
(2) after failure occurs, device (in 0.02 second, i.e. 20ms, sometimes requires that 5ms) should be able to act in very short time,
Effective limiting short-circuit current before fault current reaches first peak value；
(3) side effects such as system transient modelling vibration, overvoltage are not caused when acting；
(4) the correct action of the equipment such as relay protection is not influenced；
(5) device has auto-reset function and multiple continuous action ability；
(6) cost of equipment and operating cost are low, the volume and weight that can be born, and reliability is high, easy maintenance.
Found from scholar in 1916, after the saturable reactor based on magnetic amplifier principle, existing varactor device with
Magnetic saturation reactor is that principle is realized, now many Industry Control places, used using the principle as in alternating current circuit can
Become the electrical equipment of reactance, wherein more typical patent is：
1st, " jump reactance current limiter " of Wuhan University's Luo Dechang et al., number of patent application 200810046948.5；
2nd, " a kind of magnetic saturation type single-phase controllable reactor " of CAS Electrical Engineering Research Institute's Zhang Guoqiang, number of patent application
201110044168.9；
3rd, " a kind of single-phase controllable transducer " patent of the 712nd research institute's Liu Jin rising suns of China Shipbuilding Industry Corporation
Application number 201120276311.2；
4th, " AC step controlled parallel reactor device " of Western China Anxi piezoelectric transformer Co., Ltd, number of patent application
200510096007.9。
The common feature of technical method in above patent is, by two coils (being main coil and demagnetization magnetic coil respectively)
It is placed on a certain iron core bridge arm of secured core body, such result can be when main circuit current be by main coil L1, in iron
Very big magnetic hystersis loss is produced in core.And in the prior art mostly with by adjusting the electric current phase in secondary coil i.e. anti-magnetized coil
Position and amplitude offset the magnetic potential in main coil, if F1=N1I1For main coil magnetic potential in Practical Project, if it is desired to produce this
The anti-magnetic potential of a energy value, will consume very big energy, i.e. F1=F2=N2I2(ampere-turn), because only that producing substantially equivalent
Antiphase magnetic potential could effectively offset the magnetic potential i.e. number of ampere turns as caused by main coil, otherwise, will be on main coil
Reveal larger reactance value XL1, therefore, in original technical system from the point of view of the longtime running angle of engineering reality, it will produce
The wasting phenomenon of huge ferromagnetic loss, it is contemplated that attrition inventory quantity is up to 5%~10% reactive loss, this with it is required in engineering
Quick current-limiting reactor differs greatly in 0.25% level being lost, defined requirement.That is, existing magnetic saturation reactor
There is huge electromagnetic energy loss in operation.Therefore short-term operation, and load are only applicable to using magnetic saturation reactor
Little place application is measured, can not be applied in the electric system under high-power loading condiction for a long time, year in year out a large amount of
The performance number of loss electric flux can make general user can not bear its economic loss.
The content of the invention
The technical problems to be solved in the utility model is：For above-mentioned problem, there is provided a kind of simple in structure, reaction
Quickly, securely and reliably, usually running wastage it is small and when short trouble occurs current limliting positive effect be used for quickly change exchange
The transient reactance device of power grid middle impedance value.
Technical solution is used by the utility model：A kind of transient electrical for being used to quickly change AC network middle impedance value
Anti- device, it is characterised in that have：
Air reactor；
Moving armature core, corresponds with air reactor and sets, and initial position is located at outside the air reactor；
Actuating mechanism, for the moving armature core to be sent into the hollow electricity from initial position according to relay protection signal
Iron core-closed reactor is formed in anti-device；
Resetting-mechanism, the moving armature core is sent back to initial position after being eliminated for short circuit malfunction.
The actuating mechanism is for the moving armature to be wicked into the electromagnet in the air reactor, the electromagnetism
The electronic power switching circuit that the electromagnetic coil of iron drives via relay protection signal connects power supply.
The electromagnetic coil of the electromagnet and the electronic power switch and the power supply, and by the moving armature core
The travel switch concatenation forming circuit of shake-up, wherein travel switch is arranged at the moving armature core by initial position to hollow electricity
The stroke centre position of iron core reactor is formed in anti-device.
The electronic power switch is using thyristor either IGBT fast power electronic switches.
The resetting-mechanism has spring.
The moving armature core is T-shaped moving armature core, and the electromagnet has electromagnetic coil and the fixed magnetic of Qian font
Iron iron core, the T-shaped moving armature core center moving up and down for being plugged in the fixed pole core of Qian font, Qian font are consolidated
The insulation sleeve I and insulation sleeve II coaxial with T-shaped moving armature core are equipped with fixed pattern pole core, the electricity is wound with insulation sleeve I
Magnetic coil, insulation sleeve II are wound with the reactor line as the air reactor according to can bear high-tension insulating Design
Circle；
It is equipped between the fixed pole core upper end of Qian font and T-shaped moving armature core as the resetting-mechanism
Spring；
When the electromagnet is not powered on, T-shaped moving armature core is located at original state, T-shaped moving armature core under original state
Primary clearance is left between lower end and the fixed pole core of Qian font, the reactor winding corresponds to primary clearance setting；
The T-shaped moving armature core of electromagnetic attracting force is produced when the electromagnetic coil of electromagnet is powered, T-shaped moving armature core lower end passes through reactance
Device coil contacts the iron-core workpiece circuit for forming closure with the fixed pole core of Qian font.
When the T-shaped moving armature core lower end is contacted with the fixed pole core of Qian font, the fixed magnet iron of Qian font
Small―gap suture is left between core upper end and T-shaped moving armature core top.
The T-shaped moving armature core and/or the fixed pole core of Qian font are equipped with made of non-magnet material, use
In the guiding mechanism that guiding is moved up and down for T-shaped moving armature core.
The moving armature core is L-type moving armature core, and the electromagnet has electromagnetic coil and the fixed magnetic of Contraband font
Iron iron core, wherein one end of L-type moving armature core are pivotally mounted to one end of the fixed pole core of Contraband font through shaft, electricity
Magnetic coil is around on the fixed pole core of Contraband font；
The bullet as the resetting-mechanism is equipped between the fixed pole core of the Contraband font and L-type moving armature core
Spring；
When the electromagnet is not powered on, L-type moving armature core is located at original state, L-type moving armature core under original state
Remote shaft end and the fixed pole core of Contraband font remote shaft end between leave primary clearance, the corresponding primary clearance
The air reactor is set；Electromagnetic coil be powered when, electromagnet attract L-type moving armature core, L-type moving armature core it is remote
Shaft end contacts the electromagnet for forming an openning type structure through air reactor with the fixed pole core of Contraband font.
The beneficial effects of the utility model are：
The utility model is connected by air reactor in power grid normal operation and accesses power grid, air reactor is in power grid
In energy loss it is smaller；When short trouble occurs for power grid, according to relay protection signal drive actions mechanism by moving armature
Wick into air reactor, so that the air reactor for accessing power grid is changed into iron core reactor, so that reactance value
XLIt increased dramatically.Iron core reactor can also absorb and dissolve the energy as caused by short circuit current flow in a large amount of circuits at the same time,
So as to achieve the purpose that current limliting.
The utility model by controlling reactor winding to may also function as application of the shunt reactor in terms of reactive-load compensation,
The function of being used for the shunt reactor of compensating electric capacity electric current in HV ＆ long transmission line uses.
Moving armature core can be sent into air reactor by actuating mechanism from initial position in the utility model, work as short circuit
After failure vanishes, then by resetting-mechanism send moving armature core back to initial position out of air reactor, there is the work(that automatically resets
Can be with multiple continuous action ability.
Actuating mechanism is used based on relay protection signal to start the electromagnet of work in the utility model so that electromagnet
It is swift in response, the moment of short circuit current flow can be produced in primary circuit, suction is produced to moving armature core, moving armature is wicked
Enter air reactor and form iron core reactor.Since short circuit current flow acts on, the electromagnetism produced in itself by air reactor coil
Attraction can also attract moving armature to act, and make a concerted effort so as to be formed with electromagnet, to realize quick formation iron core reactor.
Brief description of the drawings
Structure diagram when Fig. 1 is 1 normal operation of embodiment.
Fig. 2 is the sectional view of Fig. 1.
Structure diagram when Fig. 3 is 1 short trouble of embodiment.
Fig. 4 is the sectional view of Fig. 3.
Fig. 5 is the structure diagram of embodiment 2.
101st, T-shaped moving armature core；102nd, L-type moving armature core；201st, the fixed pole core of Qian font；202nd, Contraband word
The fixed pole core of shape；3rd, electromagnetic coil；4th, air reactor, 5, insulation sleeve I；6th, insulation sleeve II；7th, guide plate；8th, bullet
Spring；9th, travel switch；10th, power supply；11st, electronic power switch；12nd, primary clearance.
Embodiment
Embodiment 1：As shown in Figure 1 to 4, the present embodiment is a kind of wink for being used to quickly change AC network middle impedance value
Become reactor, be made of air reactor, moving armature core, actuating mechanism and resetting-mechanism.
Wherein actuating mechanism is electromagnet, and the electromagnet is by the fixed pole core 201 of Qian font and is arranged at Qian font
The electromagnetic coil 3 in fixed pole core centre position forms, and electromagnetic coil 3 is around in pole core 201 fixed with Qian font
On the coaxial insulation sleeve I 5 in central axes.Moving armature core uses T-shaped moving armature core 101, and T-shaped moving armature core is consolidated along Qian font
Fixed pattern pole core central axes are arranged and lower end insertion insulation sleeve I 5, the T-shaped moving armature core top and the fixed magnetic of Qian font
It is connected between iron iron core upper end with the spring 8 as resetting-mechanism.
The fixed pole core 201 of Qian font and electromagnetic coil 3 form the electromagnet as actuating mechanism in the present embodiment,
Electromagnetic coil 3 is concatenated and formed with power supply 10 and by the electronic power switch 11 (this example uses thyristor) that relay protection signal drives
Solenoid actuated control loop.Purpose using electronic power switch 11 is to improve the time rapidity of switch motion, several
The actuation time of microsecond.
When not turned in this example in magnet control circuit, when the electromagnetic coil 3 of electromagnet is not powered on, T types activity at this time
Armature core 101 is located at original state under the action of spring 8.T-shaped moving armature core lower end is fixed with Qian font under original state
Primary clearance 12 is left between formula pole core, the corresponding primary clearance sets the insulation sleeve II 6 coaxial with insulation sleeve I 5, insulation
Cover and reactor winding is wound with II 6, since T types moving armature core is not in the range of reactor winding under original state, therefore first
Reactor winding can be used as in the series connection access power grid of air reactor 4 and run during beginning state.
When short trouble occurs, magnet control circuit conducting, the electromagnetic coil 3 of electromagnet is powered, and is inhaled in electromagnet
T-shaped moving armature core 101 overcomes 8 elastic force of spring to move down under the action of power, fixed through reactor winding and Qian font
Pole core contacts, and forms the closed circuit of iron-core workpiece, inserts T-shaped moving armature core, reactance in reactor winding at this time
Device coil is as iron core reactor reactance value XLIt increased dramatically, access power grid makes short circuit current flow drastically decline.
After T-shaped moving armature core 101 is inserted into reactor winding, reactor winding and electromagnetic coil 3 are placed on T-shaped activity
On armature core, that is, transformer device structure is formed, it is excessive and damage electrical equipment to easily cause magnet control loop voltage.To avoid damaging
The electrical equipment in bad magnet control circuit, this example concatenate travel switch 9 in magnet control circuit, and the trip switch is set
In the fixed pole core upper end of Qian font, positioned at the midway that T type moving armature cores move down, touched by T-shaped moving armature core
It is dynamic.Travel switch 9 is after the shake-up of T-shaped moving armature core so that 3 control loop of electromagnet electromagnetic coil is in open-circuit condition, is avoided
Electrical components are damaged.
When T-shaped 101 lower end of moving armature core, pole core 201 fixed with Qian font contacts, on T-shaped moving armature core
A small―gap suture is still left between portion and the fixed pole core upper end of Qian font, it is therefore an objective to is made after preventing iron-core workpiece saturation
The problem of reactance value drastically diminishes is obtained, after so T-shaped moving armature wicking is closed, is not still closed completely, therefore the iron core formed
Reactor is band GAP TYPE iron core reactor.
Being connected to auxiliary in the present embodiment on T-shaped moving armature core, it is moved down along the fixed pole core central axes of Qian font
Dynamic guiding mechanism, the guiding mechanism are connected on T-shaped moving armature core for two pieces and guide plate 7 are made by non-magnet material (copper),
Two guide plates coordinate the guide groove restricted T type moving armature core on the fixed pole core of T-shaped moving armature core lower end Qian font
It can only be moved up and down along the fixed pole core central axes of Qian font.
The operation principle of the present embodiment is as follows：
During grid collapses, short circuit current flow flows through air reactor 4, while relay protection signal driving power electronic cutting
11 conductings are closed, so that magnet control circuit turns on；
After the conducting of magnet control circuit, the electromagnetic coil 3 of electromagnet, which is powered, produces suction, meanwhile, the suction of electromagnet
Merge with the two power of suction as caused by air reactor 4 is flowed through during short circuit current flow, together attract T-shaped moving armature core from
Initial position is toward quickly moving in air reactor；
T-shaped moving armature core shift motion midway touching travel switch 9, magnet control circuit disconnect, and make electromagnetic coil 3
In the state of cut-offfing, electromagnet dead electricity, it is therefore an objective to prevent the secondary coil short-circuit condition of transformer state and influence reactance value reduction,
And lose current limitation effect；
T-shaped moving armature core continues under the action of suction caused by air reactor 4 and inertia toward air reactor
Interior movement, until T-shaped moving armature core insertion air reactor forms the iron core reactor in flux closure circuit；
After short circuit malfunction eliminates, short circuit current flow disappears, and the electric current on reactor winding declines, under caused suction
Drop, T-shaped moving armature core returns to initial position under the action of the spring 8 of resetting-mechanism at this time.
The number of turn of electromagnetic coil 3 of electromagnet and the electric current of process are to meet suction caused by the electromagnet in the present embodiment
T-shaped moving armature can be wicked into air reactor in 5ms and is configured by the suction that power cooperation reactor winding produces.
Accessing on the air reactor of power grid the apparent energy consumed in the present embodiment under power grid normal operating condition is：
When short trouble occurs, short circuit current flow IDIt is electric current I under power grid normal conditioneN times, under the conditions of identical coil, iron
The reactance value X of core reactortIt is air reactor reactance value XkM times, the apparent energy that short circuit is is：
The apparent energy ratio K under apparent energy and normal operation when short-circuit is：
, can more than enough absorption about N after air reactor is converted to iron core reactor state in moment in the present embodiment2M times
The short circuit energy of power, greatly reduces short circuit current flow, and current limitation effect is fairly obvious.
The present embodiment is being applied to the powerful reactor of high-voltage fence in use, then can be with hundreds of energy absorbers simultaneously
The method that connection, tens energy absorbers are connected is to carry out shunt current, the mode of branch pressure voltage is realized, depending on voltage of power grid etc.
Rated current Ie in level and specific circuit specifically to carry out engineering calculation, but is diverted to each unit energy absorber with conversion
For basic component value, this is just as the principle of the series connection in parallel to numerous resistance is.
Embodiment 2：As shown in figure 5, the present embodiment is the two of quick reactor purposes：One kind is used to compensate HV ＆ long transmission line
Capacitance current and set shunt reactor application scene, the quick reactor of controllable type, by air reactor 4, moving armature
Core, actuating mechanism and resetting-mechanism composition.
Wherein actuating mechanism is electromagnet, and the electromagnet is by the fixed pole core 202 of Contraband font and is around in Contraband font and consolidates
Electromagnetic coil 3 on fixed pattern pole core forms.Moving armature core uses L-type moving armature core 102, the L-type moving armature core
One end one end of the fixed pole core of Contraband font is pivotally mounted to through shaft.L type moving armature cores are fixed with Contraband font
It is connected between formula pole core through the spring 8 as resetting-mechanism.
The fixed pole core of Contraband font and electromagnetic coil form the electromagnet as actuating mechanism, electromagnetism in the present embodiment
Coil 3 is gone here and there with power supply 10 and by the electronic power switch 11 of automatic detection signal or manual actuation (this example uses thyristor)
Connect to form solenoid actuated control loop.
When electronic power switch 11 in this example in magnet control circuit does not turn on, the electromagnetic coil 3 of electromagnet is not
It is powered, L-type moving armature core 102 is located at original state under the action of spring 8 at this time.L-type moving armature core under original state
Remote shaft end and the fixed pole core 202 of Contraband font remote shaft end between leave primary clearance, it is corresponding that this is initial
Gap setting air reactor 4.In the electrical primary major loop that air reactor series connection access needs are protected.
When customer charge decline, it is necessary to when increasing the reactance value of reactor, by the conducting of 3 control loop of electromagnet coil, electricity
Magnet is powered, the L-type activity rank under the action of the dual attraction for the load current that electromagnet suction and air reactor 4 flow through
The remote shaft end of iron core overcomes spring force quickly to draw close movement, L to the remote shaft end of the fixed pole core of Contraband font
The remote shaft end of type moving armature core contacts to form openning type knot through air reactor with the fixed pole core of Contraband font
Structure, inserts L-type moving armature core at this time in air reactor, air reactor is changed into iron core reactor, and reactance value is drastically
Increase, after L-type moving armature core is inserted into air reactor, the reactor winding of air reactor and the electromagnetic wire of actuating mechanism
Circle forms transformer device structure, and it is excessive and damage electrical equipment to easily cause magnet control loop voltage.To avoid damage electromagnet
The electrical equipment of control loop, this example concatenate travel switch 9 in magnet control circuit, and the trip switch is arranged at Contraband font
On fixed pole core, mobile midway is drawn close to the fixed pole core of Contraband font positioned at L-type moving armature core, by L-type
Moving armature core touches.For travel switch after the shake-up of L-type moving armature core, magnet control circuit is in open-circuit condition.
The operation principle of the present embodiment is as follows：
When load rapid decrease for some reason in power grid, it is necessary to quickly put into reactor, driven at this time by detection signal circuit
Electronic power switch turns on, so that the control loop conducting of electromagnetic coil 3；
Magnet control circuit conducting after, by the electromagnetic coil 3 of electromagnet be powered produce suction, the suction of electromagnet with it is short
Road electric current flows through caused two suction merging of suction during air reactor 4 and together attracts the remote of L-type moving armature core 102
Movement is quickly drawn close in shaft end to the remote shaft end of the fixed pole core of Contraband font；
L-type moving armature core shift motion midway touching travel switch, the circuit of electromagnet electromagnetic coil 3 disconnect, electromagnetism
Iron dead electricity；
L-type moving armature core is by short circuit current flow IDFlow through under the action of suction caused by air reactor and inertia after
Continue toward moving in air reactor, until L-type moving armature core insertion air reactor and form the structure shape of iron core reactor
State, so as to substantially increase reactance value XLPurpose.
Claims (9)
1. a kind of transient reactance device for being used to quickly change AC network middle impedance value, it is characterised in that have：
Air reactor (4)；
Moving armature core, corresponds with air reactor (4) and sets, and initial position is located at outside the air reactor；
Actuating mechanism, for the moving armature core to be sent into the air reactor from initial position according to relay protection signal
(4) iron core-closed reactor is formed in；
Resetting-mechanism, the moving armature core is sent back to initial position after being eliminated for short circuit malfunction.
2. the transient reactance device according to claim 1 for being used to quickly change AC network middle impedance value, it is characterised in that：
The actuating mechanism be for the moving armature to be wicked into the electromagnet in the air reactor (4), the electromagnet
Electronic power switch (11) circuit connection power supply (10) that electromagnetic coil (3) drives via relay protection signal.
3. the transient reactance device according to claim 2 for being used to quickly change AC network middle impedance value, it is characterised in that：
The electromagnetic coil (3) of the electromagnet and the electronic power switch (11) and the power supply (10), and held in the mouth by the activity
Travel switch (9) the concatenation forming circuit that iron core touches, wherein travel switch is arranged at the moving armature core by initial position
The stroke centre position of iron core reactor is formed in air reactor (4).
4. the transient reactance device according to claim 3 for being used to quickly change AC network middle impedance value, it is characterised in that：
The electronic power switch (11) is using thyristor either IGBT fast power electronic switches.
5. the transient reactance device for being used to quickly change AC network middle impedance value according to claim 3 or 4, its feature exist
In：The resetting-mechanism has spring (8).
6. the transient reactance device according to claim 5 for being used to quickly change AC network middle impedance value, it is characterised in that：
The moving armature core is T-shaped moving armature core (101), and the electromagnet has electromagnetic coil (3) and the fixed magnetic of Qian font
Iron iron core (201), the T-shaped moving armature core center moving up and down for being plugged in the fixed pole core of Qian font, Qian
The insulation sleeve I (5) and insulation sleeve II (6) coaxial with T-shaped moving armature core are equipped with the fixed pole core of font (201), absolutely
The electromagnetic coil (3) is wound with edge set I, the reactor winding as the air reactor (4) is wound with insulation sleeve II；
It is equipped between the fixed pole core of Qian font (201) upper end and T-shaped moving armature core and is used as the resetting-mechanism
Spring (8)；
When the electromagnet is not powered on, T-shaped moving armature core is located at original state, T-shaped moving armature core lower end under original state
Primary clearance (12) is left between the fixed pole core of Qian font, the reactor winding corresponds to primary clearance setting；
The T-shaped moving armature core of electromagnetic attracting force is produced when the electromagnetic coil (3) of electromagnet is powered, T-shaped moving armature core lower end passes through
Reactor winding contacts the iron-core workpiece circuit for forming closure with the fixed pole core of Qian font.
7. the transient reactance device according to claim 6 for being used to quickly change AC network middle impedance value, it is characterised in that：
When the T-shaped moving armature core lower end is contacted with the fixed pole core of Qian font (201), on the fixed pole core of Qian font
Small―gap suture is left between end and T-shaped moving armature core top.
8. the transient reactance device for being used to quickly change AC network middle impedance value according to claim 6 or 7, its feature exist
In：The T-shaped moving armature core and/or the fixed pole core of Qian font (201) are equipped with made of non-magnet material, use
In the guiding mechanism that guiding is moved up and down for T-shaped moving armature core (101).
9. the transient reactance device according to claim 5 for being used to quickly change AC network middle impedance value, it is characterised in that：
The moving armature core is L-type moving armature core (102), and the electromagnet has electromagnetic coil (3) and the fixed magnetic of Contraband font
Iron iron core (202), wherein one end of L-type moving armature core (102) are pivotally mounted to the fixed magnet iron of Contraband font through shaft
One end of core (202), electromagnetic coil (3) are around on the fixed pole core of Contraband font；
It is equipped between the fixed pole core of Contraband font (202) and L-type moving armature core (102) and is used as the resetting-mechanism
Spring (8)；
When the electromagnet is not powered on, L-type moving armature core (102) is located at original state, L-type moving armature core under original state
Remote shaft end and the fixed pole core of Contraband font (202) remote shaft end between leave primary clearance (12), it is corresponding
The primary clearance sets the air reactor (4)；When electromagnetic coil (3) is powered, electromagnet attracts L-type moving armature core
(102), the remote shaft end of L-type moving armature core contacts structure through air reactor (4) with the fixed pole core of Contraband font
Into the electromagnet of an openning type structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721235811.5U CN207339252U (en) | 2017-09-25 | 2017-09-25 | For quickly changing the transient reactance device of AC network middle impedance value |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721235811.5U CN207339252U (en) | 2017-09-25 | 2017-09-25 | For quickly changing the transient reactance device of AC network middle impedance value |
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| CN207339252U true CN207339252U (en) | 2018-05-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107887889A (en) * | 2017-09-25 | 2018-04-06 | 张京伦 | For quickly changing the transient reactance device of AC network middle impedance value |
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- 2017-09-25 CN CN201721235811.5U patent/CN207339252U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107887889A (en) * | 2017-09-25 | 2018-04-06 | 张京伦 | For quickly changing the transient reactance device of AC network middle impedance value |
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