CN207677445U - A kind of controllable reactor - Google Patents
A kind of controllable reactor Download PDFInfo
- Publication number
- CN207677445U CN207677445U CN201721745962.5U CN201721745962U CN207677445U CN 207677445 U CN207677445 U CN 207677445U CN 201721745962 U CN201721745962 U CN 201721745962U CN 207677445 U CN207677445 U CN 207677445U
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- China
- Prior art keywords
- inductance coil
- line fine
- switch
- iron
- inductance
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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 discloses a kind of controllable reactors, including current transformer, iron inductance coil, on-line fine inductance coil, capacitor, double-pole switch and power trigger module.The utility model is directed to the variation of electric system During Process of Long-term Operation current control system inductance value, capacitance, devises forward and reverse compensation control and online inductance value finely tunes technological means.By controlling and adjusting, ω (L+L can be realized0) 1/ ω C=0, it is ensured that the normal work of measuring apparatus.In the utility model, on-line fine inductance value L0It can just bear, also changeable, flexible adjustment is convenient, is advantageously implemented ω (L+L0The technical conditions of the ω C of)=1/, to ensure that the stabilization of power grid supply voltage.Compared with the existing technology, the utility model may be implemented in do not power off in the case of, online compensation is carried out to inductance value and capacitance variation, is had a good application prospect.
Description
Technical field
The utility model belongs to the power grid control equipment in electrotechnics, more particularly to a kind of controllable reactor, uses
It is needed in adjustable system and device in reactance.
Background technology
The Chinese invention patent " magnetic potential balance controllable adjustable reactor " of patent No. ZL200510019185.1 is will to become
Stream device windings are connected in series on power grid busbar, and current transformer secondary winding is connected in series with inductance coil, capacitor, capacitance
Device both ends are connected in parallel power trigger module, and the trigger signal of the latter is inputted by relay protection system with command signal, wherein electricity
The capacitance C of the inductance value L and capacitor that feel coil meet ω L=1/ ω C at working frequency ω, and it is adjustable to realize that reactance needs
System and device in.But this device has the disadvantage that：What is connect by secondary winding is by inductance coil and capacitor
The series resonance of composition loads, when electric system normal operation, it is desirable that secondary winding power frequency load impedance levels off to zero, i.e. ω
L-l/ ω C=0, and its inductance value, the variation of capacitance are inevitable in During Process of Long-term Operation, directly influence current transformer original side
In winding power current influences the variation of power grid supply voltage in the pressure drop at its both ends.
Invention content
The utility model proposes a kind of controllable reactors to reach for problems of the prior art and deficiency
Effect easy to use, reliable for operation, the technical purpose realized online bidirectional compensating and accurately compensated, solving the prior art can not
Realize online compensation technical problem.
The utility model proposes a kind of controllable reactor, including it is current transformer (T), iron inductance coil (L), online
Trimming inductance coil (L0), capacitor (C), double-pole switch (K) and power trigger module (2)；Wherein：
Windings (the W of the current transformer (T)1) it is used for outside electric power network busbar (busbar is connected on when use), pair side
Winding (W2) and iron inductance coil (L), on-line fine inductance coil (L0), capacitor (C) be connected in series with, power trigger module
(2) it is connected in parallel with capacitor (C)；
The external relay protection system input of power trigger module (2), for receiving trigger signal S, passes through the triggering
Signal S realizes the switching of the module working condition, realizes the adjusting with capacitor (C) parallel resistance；
The iron inductance coil (L), on-line fine inductance coil (L0) inductance value and the capacitance C of capacitor meet
Formula：ω(L+L0The ω C of)=1/, wherein ω are working frequency；
On-line fine inductance coil (the L0) multiple coil taps are provided with, for realizing trimming inductance value；
The iron inductance coil (L) and on-line fine inductance coil (L0), together about in a ring-type or rectangle iron core
(C2) on, they form and are connected in series with；Iron inductance coil (L) and on-line fine inductance coil (L0) both can be by Same Name of Ends pole
Property with being in series, can also connect by Same Name of Ends polarity inversion；The same phase and the concatenated function of reverse phase, by double-pole switch (K)
On-line fine inductance coil (the L of composition0) polarity switched devices realization；
The double-pole switch (K) includes switch K1With switch K2, switch K1With switch K2Non- two knob of knife side in, upside
Knob meets the on-line fine inductance coil (L0) Same Name of Ends, lower side cock connects the adjusting tap of the inductance coil；Switch K1
With switch K2Two knob of knife side in, switch K1Upper side cock connect B points, lower side cock connects A points；Switch K2Upper side cock meet A
Point, lower side cock connect B points；The A points refer to on-line fine inductance coil (L0) and iron inductance coil (L) tie point, it is described
B points refer to on-line fine inductance coil (L0) and current transformer (T) secondary winding (W2) tie point.
Further, the main iron core, iron inductance coil (L) and on-line fine inductance coil (L of the current transformer (T)0)
Iron core be the cyclic annular iron core that is wound into of band-like cold-reduced silicon sheet, or the rectangle iron core made of sheet cold-reduced silicon sheet closed assembly.
In the utility model, the current transformer secondary winding and iron inductance coil, on-line fine inductance coil, capacitor
It is connected in series with；Capacitor both ends are connected in parallel power trigger module, and the trigger signal of power trigger module is by relay protection system
It is inputted with command signal, wherein the inductance value L+L of iron inductance coil and on-line fine inductance coil0And the capacitance of capacitor
Value C meets ω (L+L at working frequency ω0The ω C of)=1/.The iron inductance coil, on-line fine inductance coil, jointly
It is wound on the same cyclic annular or rectangle iron core, formation is connected in series with, both can be by Same Name of Ends polarity with being in series, can also be by same
Name end polarity inversion series connection, with phase and the concatenated function of reverse phase, by double-pole switch K1, double-pole switch K2The trimming inductance pole of composition
Property on-line conversion device realize that the utility model feature is：When inductance value, capacitance change, i.e. C ≠ 0 ω L-1/ ω,
Due to being provided with on-line fine inductance coil L0, by controlling and adjusting, can realize ω (L+L0) -1/ ω C=0, at this time
Line trimming inductance value L0It can just bear, it is also changeable；By double-pole switch K1, double-pole switch K2The trimming inductance polarity of composition exists
Line conversion equipment, as switch K2It is closed, K1When disconnection, Same Name of Ends polarity and the on-line fine inductance coil L of iron inductance coil L0
Same Name of Ends polarity with being in series, total inductance value is L+ | L0|；When the variation of power grid supply voltage needs to reduce total inductance value
When, need not have a power failure open-circuit line, and on-line operation closes a switch K1, the temporary short circuit of on-line fine inductance coil is allowed at this time, because of it
Inductance value it is small, only 1/the tens of iron inductance coil inductance, will not cause big disturbance, on-line fine at this time
Inductance coil tap can adjust；Trimming inductance L0After adjustment, switch K is disconnected2, on-line fine inductance coil L at this time0It is of the same name
End polarity is connected with the Same Name of Ends polarity inversion of iron inductance coil L, and total inductance value is L- | L0|；Therefore the utility model is very
ω (L+L are realized well0The ω C of)=1/ ensure the stabilization of power grid supply voltage.
In general, it can obtain the above technical solutions conceived by the present invention are compared with the prior art, following
Technique effect：
1, due to being provided with on-line fine inductance coil L0, by controlling and adjusting, can realize ω (L+L0) -1/ ω C=
0, on-line fine inductance value L at this time0It can just bear, also changeable, flexible adjustment is convenient；
2, the bidirectional compensating for realizing inductance value is advantageously implemented ω (L+L0The ω C of)=1/, to ensure that power grid is powered
The stabilization of voltage；
3, it may be implemented in the case of not powering off, online compensation carried out to inductance value and capacitance variation.
Description of the drawings
Fig. 1 is the utility model circuit diagram；
Fig. 2 is iron inductance coil and on-line fine inductance coil structural schematic diagram；
Fig. 3 is switch K1、K2Form trimming inductance polarity on-line conversion device circuit schematic diagram.
Specific implementation mode
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.In addition, institute in the various embodiments of the present invention described below
The technical characteristic being related to can be combined with each other as long as they do not conflict with each other.
Fig. 1 gives the schematic device of the utility model.The windings W of current transformer T1It is connected in series in power grid busbar
On 1, current transformer T secondary windings W2With iron inductance coil L, on-line fine inductance coil L0, capacitor C in series connection, power touch
Hair module 2 and capacitor C is connected in parallel, and trigger signal S is inputted by relay protection system, and power trigger module 2 can be that can close
Disconnected module GTR.
A kind of controllable reactor, the main iron core C of current transformer T1, iron inductance coil and on-line fine inductance
The iron core C of coil2, can be the cyclic annular iron core that is wound by band-like cold-reduced silicon sheet, or by sheet cold-reduced silicon sheet closed assembly and
At rectangle iron core.
Iron inductance coil L, the on-line fine inductance coil L0, together about in the same ring-type as shown in Figure 2
Or rectangle iron core C2On, they form and are connected in series with, both can be by Same Name of Ends polarity with being in series, can also be by Same Name of Ends polarity
Reverse phase is connected, with phase and the concatenated function of reverse phase, by double-pole switch K1, double-pole switch K2The trimming inductance polarity of composition turns online
Changing device realization, as shown in Figure 3.On-line fine inductance coil L0Multiple coil taps are provided with as shown in Fig. 2, multiple to adapt to
The needs of trimming inductance value.
After this controllable reactor is devoted oneself to work, when electric system normal operation, the triggering of power trigger module 2 refers to
It is zero to enable signal, and module is off state.Due to secondary winding W2What is connect is by iron inductance coil L, on-line fine electricity
Feel coil L0, capacitor C composition series resonance load, resonant frequency is power frequency ω, the resistance of secondary winding power frequency load at this time
Anti- zero, the ω (L+L that level off to0) -1/ ω C=0, be equivalent to short circuit, i.e., its short-circuit impedance very little in terms of current transformer T primary sides, one
Secondary winding W1Middle power current smoothly leads in its both ends pressure drop very little, the then required running current of power current, that is, network load
It crosses, controllable reactor levels off to zero impedance at this time.When electric system is broken down, and fault current reaches setting valve,
The command signal S of power trigger module 2 reaches maximum value, and module is in fully conducting state, and capacitor C is shorted, secondary winding
W2The load impedance connect is maximum, the impedance value Z of as two inductance coilsL+ZL0, at this time from its resistance in terms of current transformer T primary sides
It is anti-to reach maximum, it is the excitation impedance Z of current transformer TmWith the impedance Z of two inductance coilsL+ZL0Parallel value Zm//)ZL+ZL0)。
When inductance value, capacitance change, i.e. C ≠ 0 ω L-1/ ω, the utility model is due to being provided with on-line fine
Inductance coil L0, by controlling and adjusting, can realize ω (L+L0) -1/ ω C=0, on-line fine inductance value L at this time0It can be just
It can bear, it is also changeable；By double-pole switch K1, double-pole switch K2The trimming inductance polarity on-line conversion device of composition, works as switch
K2It is closed, K1When disconnection, Same Name of Ends and the on-line fine inductance coil L of iron inductance coil L0Same Name of Ends polarity with being in series,
Its total inductance value is L+ | L0|；When needing to reduce total inductance value, need not have a power failure open-circuit line, and on-line operation closes a switch K1,
Allow on-line fine inductance coil L at this time0Temporary short circuit, because its inductance value is small, only the tens of iron inductance coil L inductance values
/ mono-, big disturbance will not be caused, on-line fine inductance coil L at this time0Tap can adjust；Trimming inductance L0Adjustment
Afterwards, switch K is disconnected2, on-line fine inductance coil L at this time0Same Name of Ends polarity and the Same Name of Ends polarity of iron inductance coil L it is anti-
It is in series, total inductance value is L- | L0|；Therefore the utility model realizes ω (L+L well0The ω C of)=1/ ensure that power grid supplies
The stabilization of piezoelectric voltage.
As it will be easily appreciated by one skilled in the art that the above is only the preferred embodiment of the utility model only, not
To limit the utility model, any modification made within the spirit and principle of the present invention, equivalent replacement and change
Into etc., it should be included within the scope of protection of this utility model.
Claims (2)
1. a kind of controllable reactor, including current transformer (T), iron inductance coil (L), on-line fine inductance coil (L0), electricity
Container (C), double-pole switch (K) and power trigger module (2), it is characterised in that：
Windings (the W of the current transformer (T)1) it is used for outside electric power network busbar, secondary winding (W2) and iron inductance coil (L),
On-line fine inductance coil (L0), capacitor (C) be connected in series with, power trigger module (2) is connected in parallel with capacitor (C)；
The external relay protection system input of power trigger module (2), for receiving trigger signal S, passes through trigger signal S
It realizes the switching of the module working condition, realizes the adjusting with capacitor (C) parallel resistance；
The iron inductance coil (L), on-line fine inductance coil (L0) inductance value and the capacitance C of capacitor meet formula：
ω(L+L0The ω C of)=1/, wherein ω are working frequency；
On-line fine inductance coil (the L0) multiple coil taps are provided with, for realizing trimming inductance value；
The iron inductance coil (L) and on-line fine inductance coil (L0), together about in a ring-type or rectangle iron core (C2)
On, they form and are connected in series with；Iron inductance coil (L) and on-line fine inductance coil (L0) both can be same by Same Name of Ends polarity
It is in series, can also connect by Same Name of Ends polarity inversion；The same phase and the concatenated function of reverse phase, are made of double-pole switch (K)
On-line fine inductance coil (L0) polarity switched devices realization；
The double-pole switch (K) includes switch K1With switch K2, switch K1With switch K2Non- two knob of knife side in, upper side cock is equal
Meet the on-line fine inductance coil (L0) Same Name of Ends, lower side cock connects the adjusting tap of the inductance coil；Switch K1And switch
K2Two knob of knife side in, switch K1Upper side cock connect B points, lower side cock meets A point switches K2Upper side cock connect A points, downside
Knob connects B points；The A points refer to on-line fine inductance coil (L0) and iron inductance coil (L) tie point, the B points refer to
Line trimming inductance coil (L0) and current transformer (T) secondary winding (W2) tie point.
2. a kind of controllable reactor according to claim 1, which is characterized in that the main iron core of the current transformer (T),
Iron inductance coil (L) and on-line fine inductance coil (L0) iron core be the cyclic annular iron core that is wound into of band-like cold-reduced silicon sheet,
Or the rectangle iron core made of sheet cold-reduced silicon sheet closed assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721745962.5U CN207677445U (en) | 2017-12-14 | 2017-12-14 | A kind of controllable reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721745962.5U CN207677445U (en) | 2017-12-14 | 2017-12-14 | A kind of controllable reactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207677445U true CN207677445U (en) | 2018-07-31 |
Family
ID=62968710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721745962.5U Expired - Fee Related CN207677445U (en) | 2017-12-14 | 2017-12-14 | A kind of controllable reactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207677445U (en) |
-
2017
- 2017-12-14 CN CN201721745962.5U patent/CN207677445U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180731 Termination date: 20211214 |
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| CF01 | Termination of patent right due to non-payment of annual fee |