CN104505238B - A kind of effective air gap REgulatable reactor - Google Patents

A kind of effective air gap REgulatable reactor Download PDF

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Publication number
CN104505238B
CN104505238B CN201510019484.9A CN201510019484A CN104505238B CN 104505238 B CN104505238 B CN 104505238B CN 201510019484 A CN201510019484 A CN 201510019484A CN 104505238 B CN104505238 B CN 104505238B
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China
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air gap
determination
unshakable
effective air
winding
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CN201510019484.9A
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CN104505238A (en
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林克曼
李念
林明耀
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Southeast University
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Southeast University
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Abstract

The invention discloses a kind of effective air gap REgulatable reactor, including unshakable in one's determination, alternate current operation winding and some groups of direct current effective air gap windings;Iron core is the loop configuration of closing, and rectangular coordinate system is set up by origin of central point unshakable in one's determination, and both sides unshakable in one's determination are symmetrical with Y-axis;Middle part unshakable in one's determination on the left of Y-axis is wound with alternate current operation winding, middle part unshakable in one's determination on the right side of Y-axis is provided with some to hole unshakable in one's determination, paired hole unshakable in one's determination is symmetricly set on X-axis both sides, and one group of direct current effective air gap winding, differential concatenation between each group direct current effective air gap winding are wound with adjacent two holes unshakable in one's determination;Direct current effective air gap winding is along X-direction or along Y direction coiling.The present invention substitutes mechanical device and controls air gap to simplify core construction with controlling DC current size to produce local saturated phenomenon to regard effective air gap as, reduces the response time of reactor, while ensureing reactor reactance value linearly, and has larger adjustable range.

Description

A kind of effective air gap REgulatable reactor
Technical field
The present invention relates to a kind of reactor, and in particular to a kind of effective air gap REgulatable reactor.
Background technology
In high pressure and supergrid, the purpose of reactive-load compensation is support power network pivot point voltage, improves the steady of power network It is qualitative, increase multi-line power transmission ability and reduce line loss, suppress the oscillation of power and power-frequency overvoltage of power network, pressure regulation and optimization nothing Work(trend etc..Reactive balance is the important guarantee of power grid security, stabilization, economical operation, outstanding for super-pressure long distance powedr transmission net Its is such.Research has shown that, REgulatable reactor its capacity can not only change with the size of transimission power, smooth regulating system Reactive power, realize flexible transmission, can also suppress power frequency and switching overvoltage, line loss is reduced, so as to can carry significantly The stability and security of system high, therefore REgulatable reactor has remarkable effect for improving Operation of Electric Systems performance.
Common REgulatable reactor has turn adjusting controllable reactor, regulating the qi flowing in the channels gap Size Formula controlled reactor, SCR control Reactor and saturable reactor.And the controlled reactor being most widely used has two classes:Brilliant lock in thyristor controlled reactor Magnetic valve type reactor (MCR) in management and control reactor (TCR), saturable reactor.In recent years due to the quick hair of power electronic , so as to be used widely, although thyristor-controlled reactor reaction speed is fast, technology is more ripe for exhibition thyristor-controlled reactor, But cost is high, difficult in maintenance, harmonic pollution is more serious, large-scale application is still subject to many limitations;Magnetic valve type controllable reactance Its manufacturing process of device is simple, with low cost, reliability is high, and main core is all the time in the range of whole capacity regulating for reactor magnetic valve type In ferromagnetic linear zone, can be designed at magnet valve close to limit saturation, therefore the reactor linearity is preferably, and harmonic wave unshakable in one's determination is big The about half of thyristor-controlled reactor.But because its capacity has been reached the limit values, so magnetic valve type controllable reactor mistake Load-bearing capacity is poor.
Void dimension reactor is adjusted to drive power transmission shaft to control the size of air gap using electric structure, the change of air gap causes iron The change of intracardiac magnetic flux, so as to reach the continuous purpose for changing Working winding reactance value.Although having similar to transformation as MCR The iron core of device, with stability and reliability higher, and reactance adjustable range is big, harmonic wave is smaller, but due to using machinery Device controls void dimension response speed slower than MCR and TCR, so being not affected by enough attention and popularization and application always.
The content of the invention
Goal of the invention:In order to overcome the deficiencies in the prior art, the present invention to provide a kind of effective air gap regulative reactance Device, the DC current in regulation direct current effective air gap winding is ensureing reactor to substitute the size that mechanical device controls air gap While linear and adjustable range, the reliability and response speed of reactor are improved.
Technical scheme:To achieve the above object, the technical solution adopted by the present invention is:
A kind of effective air gap REgulatable reactor, including unshakable in one's determination 1, alternate current operation winding 2 and some groups of direct current effective air gaps around Group;Described unshakable in one's determination 1 is the loop configuration of closing, and rectangular coordinate system, unshakable in one's determination 1 both sides are set up by origin of unshakable in one's determination 1 central point It is symmetrical with Y-axis;1 middle part unshakable in one's determination on the left of Y-axis is wound with alternate current operation winding 2, and it is some right that 1 middle part unshakable in one's determination on the right side of Y-axis is provided with Hole unshakable in one's determination 4, paired hole unshakable in one's determination is symmetricly set on X-axis both sides, and it is equivalent to be wound with one group of direct current in adjacent two holes unshakable in one's determination Air gap winding, differential concatenation between each group direct current effective air gap winding;In the X-axis direction with Y direction on, two neighboring iron core The spacing in hole is equal;Direct current effective air gap winding is along X-direction or along Y direction coiling.
Further, X-direction is provided with 2n rows hole unshakable in one's determination, n is natural number.
Further, the hole unshakable in one's determination 4 is square hole or circular hole.
Further, it is described it is some composition to hole unshakable in one's determination 4 be 2 groups or 4 groups.
Further, described unshakable in one's determination 1 it is overrided to form by electrical steel sheet.
Beneficial effect:A kind of effective air gap REgulatable reactor that the present invention is provided:
1), alternate current operation winding and direct current effective air gap winding share an iron core, enormously simplify the structure of iron core, drop Low silicon steel material consumption.
2), because direct current effective air gap winding only causes part saturation unshakable in one's determination, local saturation in local generation magnetic flux unshakable in one's determination Effect can regard effective air gap as.Mechanical device is substituted with the effective air gap of DC control and control air gap, improve the reliability of equipment Property and response speed.
3), using multigroup direct current effective air gap winding differential concatenation, the exchange sensed in direct current effective air gap winding is reduced Component of voltage, influences so as to reduce alternating current voltage component on dc source.
4), alternate current operation winding and direct current effective air gap winding are between the two without electrical connection, it is to avoid grid side high voltage, Influence of the high current to control loop, improves the reliability of reactor.
5), using single dc source to the direct current effective air gap winding power in effective air gap REgulatable reactor, because This wiring is simple.The reactance of reactor is only relevant with direct current effective air gap winding, and control is simple.
Brief description of the drawings
Fig. 1 is four hole effective air gap REgulatable reactor schematic diagrames;
Fig. 2 is octal effective air gap REgulatable reactor schematic diagram;
Fig. 3 is square hole effective air gap REgulatable reactor schematic diagram;
Fig. 4 is four hole effective air gap REgulatable reactor direction of winding schematic diagrames;
Fig. 5 is octal effective air gap REgulatable reactor direction of winding schematic diagram;
Fig. 6 is square hole effective air gap REgulatable reactor direction of winding schematic diagram;
Have in figure:Unshakable in one's determination 1, alternate current operation winding 2, direct current effective air gap winding 3, hole 4 unshakable in one's determination, local flux 5, crossbeam 6, Lateral column 7.
Specific embodiment
The present invention is further described below in conjunction with the accompanying drawings.
Embodiment one:
A kind of structural representation of effective air gap REgulatable reactor of the present invention is as shown in figure 1, including unshakable in one's determination 1, exchange work Make winding 2 and some groups of direct current effective air gap windings;Described unshakable in one's determination 1 is the loop configuration of closing, with unshakable in one's determination 1 central point as former Point sets up rectangular coordinate system, and unshakable in one's determination 1 both sides are symmetrical with Y-axis;1 middle part unshakable in one's determination on the left of Y-axis is wound with alternate current operation winding 2, Y-axis 1 middle part unshakable in one's determination on right side is provided with some to hole unshakable in one's determination 4, and paired hole unshakable in one's determination is symmetricly set on X-axis both sides, at adjacent two One group of direct current effective air gap winding, differential concatenation between each group direct current effective air gap winding are wound with hole unshakable in one's determination;In X-direction In upper and Y direction, the spacing in two neighboring hole unshakable in one's determination is equal;Direct current effective air gap winding is along X-direction or along Y-axis side To coiling.Coiling up and down or left and right coiling as shown in Figure 4, that is, be expressed as two groups of direct current effective air gap windings:3A and 3B;Respectively Differential concatenation between group direct current effective air gap winding.Dash area is expressed as the sphere of circulation of local flux 5, the office of generation in Fig. 1 Portion's saturation can regard effective air gap as:Because when passing through DC current in direct current effective air gap winding, unshakable in one's determination 1 has the side of hole unshakable in one's determination 4 Surrounding is local to produce magnetic flux saturation, and the current amplitude for passing through is bigger, and magnetic flux degree of saturation is higher, i.e., magnetic conductivity is smaller, until connecing The magnetic conductivity of near-space gas, it is possible to regard the size of current passed through in direct current effective air gap winding as equivalent adjustable length Air gap;Effect is:By adjusting the size of effective air gap, whole unshakable in one's determination 1 magnetic resistance can be controlled, because main flux is with main magnetic circuit Magnetic resistance be inversely proportional, so i.e. control main flux size.
Embodiment two:
A kind of structural representation of effective air gap REgulatable reactor of the present invention is as shown in Fig. 2 compare embodiment one Structure leaves eight circular iron core holes 4 to be used to wind four groups of direct current effective air gap windings, to produce effective air gap evenly.Figure 5 is embodiment two, four groups of direct current effective air gap windings:5A, 5B, 5C and 5D.Four direct current effective air gap windings are square as shown in Figure 5 Formula differential concatenation is connected, and winding mode has multiple combination, and Fig. 5 provides two of which winding mode, and the principle of coiling is four groups straight The exchange magnetic potential sensed in stream effective air gap winding cancels each other.Dash area is the sphere of circulation of local flux 5 in Fig. 2, is produced Local saturation can regard effective air gap as.
Embodiment three:
A kind of structural representation of effective air gap REgulatable reactor of the present invention is as shown in figure 3, compared to one knot of embodiment The two groups of square longitudinal direction of hole unshakable in one's determination 4 arrangements of size identical are left in 1 side unshakable in one's determination in structure, wherein unshakable in one's determination positioned at this middle prescription shape Hole 4 is zero with the vertical range of X-axis;The sectional area of middle core hole 4 after merging is the sectional area of upper iron core hole 4 or lower hole unshakable in one's determination The twice of 4 sectional areas.One group of direct current effective air gap winding is around on adjacent hole square unshakable in one's determination 4, that is, need two groups of direct currents equivalent Air gap winding.If middle two square holes unshakable in one's determination 4 separate, two-by-two due to direct current effective air gap winding between square hole unshakable in one's determination 4 Winding mode produced by magnetic flux be to cancel out each other, magnetic flux is zero, equivalent to not existing.Two groups of direct current effective air gap windings around On crossbeam 6 between square hole unshakable in one's determination 4, two groups of connected modes 6A, 6B of direct current effective air gap winding as shown in Figure 6.In Fig. 3 Dash area is the sphere of circulation of local flux 5, and the local saturation of generation can regard effective air gap as.
The above is only the preferred embodiment of the present invention, it should be pointed out that:For the ordinary skill people of the art Member
For, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improve and moisten Decorations also should be regarded as protection scope of the present invention.

Claims (4)

1. a kind of effective air gap REgulatable reactor, it is characterised in that:It is straight including (1) unshakable in one's determination, alternate current operation winding (2) and some groups Stream effective air gap winding;The iron core (1) is the loop configuration of closing, sets up right angle as origin with the central point of (1) unshakable in one's determination and sits Mark system, the both sides of (1) unshakable in one's determination are symmetrical with Y-axis;Iron core (1) middle part on the left of Y-axis is wound with alternate current operation winding (2), on the right side of Y-axis Unshakable in one's determination (1) middle part is provided with some to hole unshakable in one's determination (4), and paired hole unshakable in one's determination is symmetricly set on X-axis both sides, in two adjacent iron One group of direct current effective air gap winding is wound with heart hole, is reversely gone here and there between two direct current effective air gap windings per adjacent connection Connection;In the X-axis direction with Y direction on, the spacing in two neighboring hole unshakable in one's determination is equal;Direct current effective air gap winding is along X-axis side To or along Y direction coiling;
X-direction is provided with 2n rows hole unshakable in one's determination, n is natural number.
2. a kind of effective air gap REgulatable reactor according to claim 1, it is characterised in that:The hole unshakable in one's determination (4) is side Hole or circular hole.
3. a kind of effective air gap REgulatable reactor according to claim 1, it is characterised in that:It is described it is some composition to iron Heart hole (4) is 2 groups or 4 groups.
4. a kind of effective air gap REgulatable reactor according to claim 1, it is characterised in that:The iron core (1) is by electrician Silicon steel plate stacking is formed.
CN201510019484.9A 2015-01-14 2015-01-14 A kind of effective air gap REgulatable reactor Expired - Fee Related CN104505238B (en)

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US5523673A (en) * 1994-03-04 1996-06-04 Marelco Power Systems, Inc. Electrically controllable inductor
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