CN103280293B - A kind of core valve type reactor - Google Patents
A kind of core valve type reactor Download PDFInfo
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- CN103280293B CN103280293B CN201310243323.9A CN201310243323A CN103280293B CN 103280293 B CN103280293 B CN 103280293B CN 201310243323 A CN201310243323 A CN 201310243323A CN 103280293 B CN103280293 B CN 103280293B
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Abstract
The present invention relates to a kind of core valve type reactor, the operating cost compared with prior art solving reactor current-limiting apparatus is high, potential safety hazard is large, baroque defect.The present invention includes iron core valve armature arm (4), main iron core along separate routes (111), iron core (1) and around the main limit reactance winding (2) on iron core (1), described main iron core shunt (111) is wound with short-circuited conducting sleeve winding (3), and the main limit reactance winding (2) on described iron core (1) forms coupling circuit by iron core valve armature arm (4) and the short-circuited conducting sleeve winding (3) on main iron core along separate routes (111).The present invention can when short trouble occurs, can the effective limiting short-circuit current of the degree of depth, have that reactive loss under normal operating condition is little, fault time operate time little, feature that reaction speed is fast.
Description
Technical field
The present invention relates to reactor technical field, specifically a kind of core valve type reactor.
Background technology
Along with increasing sharply of net capacity in electric power system and load, the short circuit current of system also constantly rises, and what the capacity of short circuit in a lot of area had had met and exceeded circuit breaker cut-offs capacity, brings very large hidden danger to the safe and stable operation of electric power system.Short trouble has become one of the most distinct issues of the equipment damaged in electric power, harm safe operation of power system.In order to solve this problem, the prevalent means of current restriction system short circuit current is by the reactance in increase system, namely high-impedance transformer is adopted, series reactor in systems in which, current limiting reactor two ends to be connected in parallel technological means such as reactor shorted on both ends after high-speed switch to reach the energy-conservation object of current limliting.Simultaneously also have many countries researching and developing new technology that superconductive current limiter carrys out limiting short-circuit current.
But prior art also also exists many weak points, if use high-speed switch by reactor shorted on both ends, then the reliability of this switch will bring up to a new higher requirement, once hydraulic performance decline or fault, when system is short-circuited, tripping will produce immeasurable serious consequence.If use high-impedance transformer and reactor, the input cost of the system that certainly will increase electric power widely, and increase the reactive loss of system, make that power transmission and transformation line terminal voltage reduces, loss is large, will reduce the efficiency of power delivery, and unadjustable.Therefore input reactive power compensator that must be extra more in systems in which, this will increase the construction cost of electric power system further.The high tc superconducting fault current limiter of actively research and development in the world simultaneously, although obtain good short circuit Limited Current effect, but its cost is very expensive, complex structure, as the cryogenic system, superconductor, volume framework etc. that wherein relate to, and must professional safeguard, add operating cost.And its many core technologies, security performance, efficiency etc. still need constantly to overcome solution, do not reach meeting the demands of actual use.How to develop a kind of low price, efficiently, reliably, structure is simple, reactance is little, the reactor of metering function can be provided to have become be badly in need of the technical problem solved.
Summary of the invention
The object of the invention is that operating cost in order to solve reactor current-limiting apparatus in prior art is high, potential safety hazard is large, baroque defect, provides a kind of core valve type reactor to solve the problems referred to above.
To achieve these goals, technical scheme of the present invention is as follows:
A kind of core valve type reactor, comprise iron core valve armature arm, main iron core along separate routes, iron core and around the main limit reactance winding on iron core, described main iron core shunt is wound with short-circuited conducting sleeve winding, and the main limit reactance winding on described iron core forms coupling circuit by the short-circuited conducting sleeve winding on iron core valve armature arm and main iron core shunt.
Also comprise from iron core along separate routes, described from iron core along separate routes and main iron core along separate routes common combination be shunt iron core; Described main limit reactance winding is connected with current monitoring moving component, described current monitoring moving component mechanical connection iron core valve armature arm, iron core valve armature arm moves to from iron core after the electric current occurring exceeding setting for monitoring main limit reactance winding by described current monitoring moving component along separate routes.
Described current monitoring moving component comprises overcurrent release, by the upper fixed seat of spring fitting in iron core valve armature arm top, mutually engages with upper latch notch the lower fixed seat being movably installed in iron core valve armature arm bottom by lower bayonet socket, described main limit reactance winding is around on overcurrent release, and described overcurrent release is flexibly connected with trigger unit.
Described trigger unit comprises cross bar and armature, and described armature top is flexibly connected with overcurrent release, and armature lever is fixedly equipped with in described armature bottom, and described armature bottom and the distance of overcurrent release are greater than the distance of armature lever and cross bar.
Described overcurrent release is that magnetictrip or electronic current detect trip gear.
The material of described iron core is silicon steel sheet or amorphous alloy material.
Described spring is powerful stretching back-moving spring.
Also comprise from iron core along separate routes, described main iron core is fixed on iron core both sides along separate routes and from iron core along separate routes, described iron core valve armature arm is movably fixed on iron core, described main limit reactance winding is connected with current monitoring moving component, described current monitoring moving component mechanical connection iron core valve armature arm, iron core valve armature arm moves to from iron core there is the electric current of setting for monitoring main limit reactance winding after by described current monitoring moving component along separate routes.
Also comprise the spring support holder be fixed on from iron core shunt, described spring support holder is connected with iron core valve armature arm by brute spring.
beneficial effect
A kind of core valve type reactor of the present invention, compared with prior art can when short trouble occurs, can the effective limiting short-circuit current of the degree of depth, and is the very little current-limiting apparatus of a kind of reactance under system worked well state.Have that reactive loss under normal operating condition is little, fault time operate time little, feature that reaction speed is fast, can namely limit it at the short circuit current initial stage of rising and increase, without the advantage such as impact peak value of short of expection.Have with low cost, easily manufactured, structure is simple, operational reliability is high, does not need the plurality of advantages such as special messenger safeguards.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention
Fig. 2 is the structural representation of the first execution mode of the present invention
Fig. 3 is the structural representation of the shunt iron core of the first execution mode of the present invention
Fig. 4 be the first execution mode of the present invention in normal state the magnetic line of force move towards figure
Fig. 5 is that the first execution mode of the present invention moves towards figure at guard mode lower magnetic force line
Fig. 6 is the plan structure figure of the second execution mode of the present invention
Fig. 7 is the end TV structure figure of the second execution mode of the present invention
Fig. 8 is the removal main limit reactance winding of the second execution mode of the present invention and the structural representation of short-circuited conducting sleeve winding
Wherein, iron core, 12-upper fixed seat, 13-lower fixed seat, 101-armature lever, 111-main iron core are along separate routes along separate routes, 112-is from iron core shunt, 201-transmission line connection jaws one, 202-transmission line connection jaws two, 35-spring support holder, 36-brute spring for bayonet socket under 1-iron core, 2-main limit reactance winding, 3-short-circuited conducting sleeve winding, 4-iron core valve armature arm, 5-spring, 6-, 7-upper latch notch, 8-cross bar, 9-overcurrent release, 10-armature, 11-.
Embodiment
For making to have a better understanding and awareness architectural feature of the present invention and effect of reaching, coordinating detailed description in order to preferred embodiment and accompanying drawing, being described as follows:
As shown in Figure 1, a kind of core valve type reactor of the present invention, comprise iron core valve armature arm 4, main iron core along separate routes 111, iron core 1 and around the main limit reactance winding 2 on iron core 1, described main iron core shunt 111 is wound with short-circuited conducting sleeve winding 3, and the main limit reactance winding 2 on described iron core 1 forms coupling circuit by iron core valve armature arm 4 and the short-circuited conducting sleeve winding 3 on main iron core along separate routes 111.Now according to the impedance transformation principle of ideal transformer 1:1, the impedance of the short-circuited conducting sleeve winding 3 in main iron core shunt 111 is very little approximates zero, now on iron core 1, main limit reactance winding 2 also approximates zero, can use as wire, thus ensure that the low-loss of main limit reactance winding 2 on iron core 1 normally runs.
From iron core along separate routes 112 with main iron core along separate routes 111 common combinations be shunt iron core 11; Described main limit reactance winding 2 is connected with current monitoring moving component, described current monitoring moving component mechanical connection iron core valve armature arm 4, iron core valve armature arm 4 112 moves to from iron core there is the electric current of setting for monitoring main limit reactance winding 2 after by described current monitoring moving component along separate routes.First current setting value is set, such as 60 kilo-amperes.When electric current is more than 60 kilo-ampere, electric current on main limit reactance winding 2 has also just exceeded set point, iron core valve armature arm 4 under the effect of brute spring involution to from iron core along separate routes 112 Light Conditions, now owing to there is no short-circuited winding from iron core shunt 112, just define the effect of inductance, reach the object of limiting short-circuit current.Protect the safety of transmission system.
As first embodiment of the present invention, as shown in Figure 2, described current monitoring moving component is comprised overcurrent release 9, is installed on the upper fixed seat 12 on iron core valve armature arm 4 top by spring 5, mutually engages with upper latch notch 7 lower fixed seat 13 being movably installed in iron core valve armature arm 4 bottom by lower bayonet socket 6, described main limit reactance winding 2 is around on overcurrent release 9, and described overcurrent release 9 is flexibly connected with trigger unit.Overcurrent release 9, iron core 1 and around iron core 1 and the main limit reactance winding 2 on overcurrent release 9, main limit reactance winding 2 first on iron core 1 after again around on overcurrent release 9, main limit reactance winding 2 there are transmission line connection jaws 1 and transmission line connection jaws 2 202, for connecting transmission line.Described overcurrent release 9 is flexibly connected with trigger unit, is flexibly connected and ensure that trigger unit can be movable according to electromagnetic force.Iron core 11 comprises main iron core shunt 111 and 112 combines along separate routes from iron core along separate routes, as shown in Figure 3, is the shape of a tree-shaped.Main iron core shunt 111 is wound with short-circuited conducting sleeve winding 3, under normal rating operating state, because main iron core shunt 111 is by short-circuited conducting sleeve winding 3 short circuit, shows as very little leakage inductance reactance value.Iron core valve armature arm 4 is for carrying out shunt selection index system, and iron core valve armature arm 4 top is connected on upper fixed seat 12 by spring 5, and iron core valve armature arm 4 bottom is movably installed on lower fixed seat 13 by lower bayonet socket 6 and the mutual engaging of upper latch notch 7.Lower bayonet socket 6 and upper latch notch 7 engage mutually, lower bayonet socket 6 and upper latch notch 7 can be untied, iron core valve armature arm 4 involution under spring 5 stores up releasable effect by touching upper latch notch 7.Iron core 1, iron core valve armature arm 4 and main iron core 111 are coupled along separate routes, and magnetic line of force trend so forms a closed iron core flux loop to iron core 1 more again from after iron core 1 to iron core valve armature arm 4 after main iron core along separate routes 111 after shunt iron core 11.
Trigger unit comprises cross bar 8 and armature 10, described armature 10 top is flexibly connected with overcurrent release 9, armature lever 101 is fixedly equipped with in described armature 10 bottom, described armature 10 bottom and the distance of overcurrent release 9 are greater than the distance of armature lever 101 and cross bar 8, can ensure that armature lever 101 can have enough distances to knock cross bar 8 like this, cause lower bayonet socket 6 and upper latch notch 7 to be untied.Described overcurrent release 9 is that magnetictrip or electronic current detect trip gear, is less than 1 millisecond operate time.The material of iron core 1 can be silicon steel sheet or amorphous alloy material, and spring 5 is preferably powerful stretching back-moving spring, and such result of use is better.
During actual use, transmission line connection jaws 1 is connected entering of transmission line respectively with transmission line connection jaws 2 202 and goes out, and sets a protection value in advance by overcurrent release 9.As shown in Figure 4, iron core valve armature arm 4 is operated in the initial condition of main iron core shunt 111, when main limit reactance winding 2 is by rated current, be shorted around group 3 short circuit, at this moment inductance value is very little, and thus reactance is little, very little on the impact of system, be then equivalent to wire the same as delivered current.When main limit reactance winding 2 passes to electric current, main limit reactance winding 2 will produce self-induced magnetic flux, the major part of self-induced magnetic flux by interlinkage to short-circuited conducting sleeve winding 3.When current variation on main limit reactance winding 2, its self-induced magnetic flux also will change with electric current.According to law of magnetic induction, except producing except self induction voltage in main limit reactance winding 2, also in short-circuited conducting sleeve winding 3, also induced voltage will be produced.According to ideal transformer model, ideal transformer be one can not the multiterminal element of energy storage, the instantaneous power identically vanishing that its absorbs.Ideal transformer, except voltage of transformation and electric current, can also be used to transforming impedance, short-circuited conducting sleeve winding 3 short circuit, then the terminal voltage of short-circuited conducting sleeve winding 3 is zero, and the input impedance of main limit reactance winding 2 is also zero.
When the electric current in iron core 1 increases rapidly, after electronic trip unit 9 detects that electric current exceedes preset value, start rapidly in 1 millisecond.Armature 10 is under the driving of main limit reactance winding 2 electric current, and rapid adhesive, clashes into cross bar 8 simultaneously, after cross bar 8 promotes upper fore shaft 7, opens lower bayonet socket 6 and upper latch notch 7 is untied, thus Iron Release core valve armature arm 4.As shown in Figure 5, iron core valve armature arm 4 departs from main iron core shunt 111 under the effect of spring 5, connect with from iron core loop 112, involution is to from iron core along separate routes 112 Light Conditions, and now the main iron core loop of limit reactance winding 2 and the iron core loop of short-circuited conducting sleeve winding 3 disconnect do not have magnetic flux interlinkage completely.Main limit reactance winding 2 independently has flux circuit of one's own, shows as the impedance operator of inductance in circuit, reaches the object of current limliting, thus play short-circuit protection effect.
As second embodiment of the present invention, as shown in Figure 6 and Figure 7, comprise from iron core along separate routes 112, described main iron core along separate routes 111 and 112 be fixed on iron core 1 both sides along separate routes from iron core, as shown in Figure 8, fixing mode can adopt one-shot forming to be made.Described iron core valve armature arm 4 is movably fixed to the top of iron core 1, described main limit reactance winding 2 is connected with current monitoring moving component, described current monitoring moving component mechanical connection iron core valve armature arm 4, iron core valve armature arm 4 112 moves to from iron core there is the electric current of setting for monitoring main limit reactance winding 2 after by described current monitoring moving component along separate routes.Current monitoring moving component can adopt the electronic monitoring and relevant device that use in prior art, as long as can carry out moving under electromagnetic action by main limit reactance winding 2 after exceeding setting electric current.Also comprise the spring support holder 35 be fixed on from iron core along separate routes 112, spring support holder 35 for the connection of brute spring 36 and iron core valve armature arm 4, and prevents from producing from iron core along separate routes 112 in steering procedure.When specifically using; iron core valve armature arm 4 is first movably fixed on iron core 1; when have exceed setting current value electric current through main limit reactance winding 2 time; under the effect of current monitoring moving component; iron core valve armature arm 4 departs from main iron core and 111 turns to from iron core shunt 112 along separate routes under the effect of spring 5; play inductance effect equally, protect the safety of transmission system.
The present invention utilizes quick switching device when power transmission and transformation line is short-circuited, reactance value to be smoothly converted to the method for Zm by Z0 to realize short circuit current limitation function.Because the present invention is mechanical structure by changing reactance transformer iron core and state, and in circuit, the size of electric current, the height of electric pressure have nothing to do, and do not have the restriction of curtage grade, so application is very broad.Compare with existing electric power system current limiting technique, under having normal operating condition, idle power consumption is little, loss is low in the present invention, during fault, operate time is less than 1 millisecond, reaction speed is fast and can limit it at the short circuit current initial stage of rising and increase, with low cost without the advantage such as impact peak value of short of expection, easily manufactured, operational reliability is high, non-maintaining, therefore has very large market application foreground.
More than show and describe general principle of the present invention, principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; the just principle of the present invention described in above-described embodiment and specification; the present invention also has various changes and modifications without departing from the spirit and scope of the present invention, and these changes and improvements all fall in claimed scope of the present invention.The protection range of application claims is defined by appending claims and equivalent thereof.
Claims (6)
1. a core valve type reactor, comprise iron core valve armature arm (4), main iron core along separate routes (111), iron core (1) and around the main limit reactance winding (2) on iron core (1), described main iron core shunt (111) is wound with short-circuited conducting sleeve winding (3), main limit reactance winding (2) on described iron core (1) forms coupling circuit by iron core valve armature arm (4) and the short-circuited conducting sleeve winding (3) on main iron core along separate routes (111), it is characterized in that: also comprise from iron core along separate routes (112), described from iron core along separate routes (112) and main iron core along separate routes (111) common combination be shunt iron core (11), described main limit reactance winding (2) is connected with current monitoring moving component, described current monitoring moving component mechanical connection iron core valve armature arm (4), iron core valve armature arm (4) moves to from iron core shunt (112) after the electric current occurring exceeding setting for monitoring main limit reactance winding (2) by described current monitoring moving component.
2. a kind of core valve type reactor according to claim 1, it is characterized in that: described current monitoring moving component is comprised overcurrent release (9), is installed on the upper fixed seat (12) on iron core valve armature arm (4) top by spring (5), mutually engages with upper latch notch (7) lower fixed seat (13) being movably installed in iron core valve armature arm (4) bottom by lower bayonet socket (6), described main limit reactance winding (2) is around on overcurrent release (9), and described overcurrent release (9) is flexibly connected with trigger unit.
3. a kind of core valve type reactor according to claim 2, it is characterized in that: described trigger unit comprises cross bar (8) and armature (10), described armature (10) top is flexibly connected with overcurrent release (9), armature lever (101) is fixedly equipped with in described armature (10) bottom, and described armature (10) bottom and the distance of overcurrent release (9) are greater than the distance of armature lever (101) and cross bar (8).
4. a kind of core valve type reactor according to claim 3, is characterized in that: described overcurrent release (9) is magnetictrip or electronic current detection trip gear.
5. a kind of core valve type reactor according to claim 3, is characterized in that: the material of described iron core (1) is silicon steel sheet or amorphous alloy material.
6. a kind of core valve type reactor according to claim 3, is characterized in that: described spring (5) is powerful stretching back-moving spring.
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| CN201310243323.9A CN103280293B (en) | 2013-06-19 | 2013-06-19 | A kind of core valve type reactor |
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| CN201310243323.9A CN103280293B (en) | 2013-06-19 | 2013-06-19 | A kind of core valve type reactor |
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| CN103280293A CN103280293A (en) | 2013-09-04 |
| CN103280293B true CN103280293B (en) | 2015-08-19 |
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| CN106449058B (en) * | 2016-09-28 | 2018-07-20 | 西安交通大学 | Iron core reactor vibration suppressing method based on short circuit winding |
Citations (6)
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|---|---|---|---|---|
| US4613841A (en) * | 1983-11-30 | 1986-09-23 | General Electric Company | Integrated transformer and inductor |
| CN1237823A (en) * | 1999-06-18 | 1999-12-08 | 王先伦 | Magnetic differential induction voltage regulator and its constituent voltage-regulating power supply and power factor compensator |
| CN2924775Y (en) * | 2006-05-10 | 2007-07-18 | 王卫东 | Overcurrent short circuit protection device |
| CN101882499A (en) * | 2010-06-25 | 2010-11-10 | 宜兴市万盛变压器有限公司 | Magnetic valve type controllable reactor |
| CN201820574U (en) * | 2010-09-16 | 2011-05-04 | 常州高源电力电子有限公司 | Overcurrent protecting reactor for static volt-ampere reactive generator system |
| CN203311970U (en) * | 2013-06-19 | 2013-11-27 | 高海生 | Iron core valve type electric reactor |
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2013
- 2013-06-19 CN CN201310243323.9A patent/CN103280293B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4613841A (en) * | 1983-11-30 | 1986-09-23 | General Electric Company | Integrated transformer and inductor |
| CN1237823A (en) * | 1999-06-18 | 1999-12-08 | 王先伦 | Magnetic differential induction voltage regulator and its constituent voltage-regulating power supply and power factor compensator |
| CN2924775Y (en) * | 2006-05-10 | 2007-07-18 | 王卫东 | Overcurrent short circuit protection device |
| CN101882499A (en) * | 2010-06-25 | 2010-11-10 | 宜兴市万盛变压器有限公司 | Magnetic valve type controllable reactor |
| CN201820574U (en) * | 2010-09-16 | 2011-05-04 | 常州高源电力电子有限公司 | Overcurrent protecting reactor for static volt-ampere reactive generator system |
| CN203311970U (en) * | 2013-06-19 | 2013-11-27 | 高海生 | Iron core valve type electric reactor |
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Effective date of registration: 20171227 Address after: 238000 Anhui city of Chaohu province Anhui Juchao by flag Mountain Road No. 6 Patentee after: Hefei one Pml Precision Mechanism Ltd Address before: Baohe District of Hefei city in Anhui province 230001 Lake Street Juwei Weigang Duan Ying 22 Building No. 1 Patentee before: Gao Haisheng |