CN104465168A - Transition circuit of vacuum type on-load tap-changer and operation method - Google Patents
Transition circuit of vacuum type on-load tap-changer and operation method Download PDFInfo
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- CN104465168A CN104465168A CN201410773102.7A CN201410773102A CN104465168A CN 104465168 A CN104465168 A CN 104465168A CN 201410773102 A CN201410773102 A CN 201410773102A CN 104465168 A CN104465168 A CN 104465168A
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- China
- Prior art keywords
- contact
- vacuum
- over switch
- change over
- export
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/54—Circuit arrangements not adapted to a particular application of the switching device and for which no provision exists elsewhere
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F29/00—Variable transformers or inductances not covered by group H01F21/00
- H01F29/02—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings
- H01F29/04—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings having provision for tap-changing without interrupting the load current
Abstract
The invention provides a transition circuit of a vacuum type on-load top-changer and an operation method. The transition circuit of the vacuum type on-load top-changer comprises a main contact A, a main contact B, a vacuum contact A, a vacuum contact B, a change-over switch T1, a change-over switch T2, a transition resistor R1 and a transition resistor R2, wherein the vacuum contact A and the vacuum contact B are used as a main switching contact and a transition contact in turn. The main contact A is connected with taps, with the odd numbers, of a regulating winding of a transformer, and the main contact B is connected with taps, with the even numbers, of the regulating winding of the transformer. Each change-over switch comprises a first static contact, a second static contact and a movable contact, wherein the first static contact is connected with the corresponding taps of the regulating winding of the transformer, the second static contact is connected with the corresponding taps of the regulating winding of the transformer through the transition resistor, and one end of the movable contact is connected with the corresponding vacuum contact. Compared with the prior art, the transition circuit of the vacuum type on-load top-changer and the operation method have the advantages that the switching tasks of the main switching contact and the transition contact are in the charge of two vacuum pipes in turn, the switching procedure is symmetrical, so that the burning losses of the two vacuum contacts are completely identical, and the electrical service life of the whole on-load tap-changer is greatly prolonged.
Description
Technical field
The present invention relates to a kind of shunting switch transition circuit, be specifically related to a kind of vacuum type on load tap changer transition circuit and method of operation.
Background technology
On load tap changer a kind ofly provides the switching device of constant voltage when load variations for transformer.Its general principle be when ensure not interrupt load electric current, realize the switching in Transformer Winding between tap, thus change the number of turn of winding, i.e. the voltage ratio of transformer, finally realizes the object of pressure regulation.The on load tap changer configured at the transformer of rectification, smelting, rail traction is at present mostly that Quick resistance switches, and the principle of arc extinction is carried out work by arcing contact system when current zero-crossing point.The contact burning that this switching principle switches shunting switch frequently for transformer work is especially relatively more serious, and the failure rate of switch is higher, and the carbonization speed of oil is fast, adds regular maintenance amount thus to power supply department.Vacuum type on load tap changer, the main vacuum tube by diverter switch realizes arc extinction, and electric arc and hot gases do not expose; The oil of tap switch oil indoor can not carbonization and pollution, and oil does not need purification; In vacuum tube, the scaling loss corrosion of contact can drop to bottom line.On load tap changer is formed primarily of diverter switch, change over selector and motor drive mechanism.
On load tap changer bringing onto load switches, and need transition circuit and selection circuit, different voltage regulating modes requires different regulating circuits, therefore, the circuit of on load tap changer by transition circuit, selection circuit and regulating circuit three part form.Transition circuit is the series resistor circuit be connected across between tapping point, and the mechanism corresponding with it is diverter switch or selector switch, and it is the tap of electriferous state down conversion Transformer Winding.Shunting switch adopts the principle of transition circuit to realize tap change operation.There are single resistance, two resistance, four resistance or many resistance excessive by the number of its transition circuit resistance, have single break, double-fracture etc. by its contact fracture, formation capable of being combined transition circuit miscellaneous.Transition circuit and the contact task of changeover program to diverter switch have Different Effects, and can electric arc limit reliable in initial half cycle extinguishing, depends on required task switching to a great extent.
The arc contact not connecing transition resistance on load tap changer is main switching contact, and what it bore main switching contact cut-offs task; The arc contact being connected to transition resistance is transition contact, and what it bore transition contact cut-offs task.Because both cut-off the different of task, often cause contact burning to differ greatly, the situation that a contact burning is slight and another contact allows scaling loss thickness to burnout often can occur.Therefore, need to provide a kind of ensure main switching contact and transition contact scaling loss completely the same, improve the transition circuit of the electrical endurance of whole vacuum on-load operation switch.
Summary of the invention
In order to meet the needs of prior art, the invention provides a kind of vacuum type on load tap changer transition circuit, described transition circuit comprises main contact A, main contact B, vacuum contact A, vacuum contact B, change over switch T
1, change over switch T
2, transition resistance R
1with transition resistance R
2;
The odd number of points of described main contact A and transformer regulating winding connects in succession, and main contact B is connected with the even number tap of transformer regulating winding;
Described change over switch T
1comprise the first fixed contact, the second fixed contact and moving contact; Described first fixed contact and described odd number of points connect in succession; Described second fixed contact is by transition resistance R
1be connected with described even number tap; One end of described moving contact is connected with vacuum contact A, the other end and the first fixed contact, and the second fixed contact is slidably connected;
Described change over switch T
2comprise the first fixed contact, the second fixed contact and moving contact; Described first fixed contact is by transition resistance R
2connect in succession with described odd number of points; Described second fixed contact is connected with described even number tap; One end of described moving contact is connected with vacuum contact B, the other end and the first fixed contact, and the second fixed contact is slidably connected.
Preferably, described vacuum contact A and vacuum contact B includes the vacuum contact of two series connection; Described transition resistance R
1with transition resistance R
2resistance identical;
Preferably, described main contact A, main contact B, vacuum contact A are all connected with transformer neutral point with the other end of vacuum contact B, with output load current;
Preferably, when the tap selector of described on load tap changer and the odd number of points of transformer regulating winding connect in succession, main contact A conducting, main contact B disconnection, vacuum contact A conducting, vacuum contact B conducting, change over switch T
1moving contact be connected with its first fixed contact, change over switch T
2moving contact be connected with its first fixed contact, load current exports through main contact A; Change to even number tap when described tap selector is switched through by described odd number of points, the method for operation of described transition circuit comprises:
S101: disconnect described main contact A, load current I
nflow through change over switch T successively
1export with vacuum contact A;
S102: disconnect described vacuum contact A, produces electric arc; After this arc extinction, load current I
nflow through transition resistance R successively
2, change over switch T
2export with vacuum contact B, the recovery voltage U at described vacuum contact A two ends
a=I
n× R
2;
S103: after electric arc extinguishes completely in vacuum contact A, change over switch T
1moving contact and the first fixed contact disconnect, load current I
nflow through transition resistance R successively
2, change over switch T
2export with vacuum contact B;
S104: change over switch T
1moving contact and its second fixed contact close, load current I
nflow through transition resistance R successively
2, change over switch T
2export with vacuum contact B;
S105: closed described vacuum contact A, transition circuit forms bridge joint, produces circulating current
load current I
nevenly through vacuum contact A and vacuum contact B; Flow through described change over switch T successively
1with the electric current of vacuum contact A
wherein, described U
sfor on load tap changer step voltage;
S106: disconnect vacuum contact B, produces electric arc; After this arc extinction, load current I
nflow through transition resistance R successively
1, change over switch T
1export with vacuum contact A; The recovery voltage at described vacuum contact B two ends is U
b=U
s+ I
nr
1;
S107: after electric arc extinguishes completely in vacuum contact B, change over switch T
2moving contact and its first fixed contact disconnect, load current I
nflow through transition resistance R successively
1, change over switch T
1export with vacuum contact A;
S108: change over switch T
2moving contact and its second fixed contact close, load current I
nflow through transition resistance R successively
1, change over switch T
1export with vacuum contact A, and flow through change over switch T successively
2export with vacuum contact B;
S109: closed main contact B, carry electric current I
nflow through main contact B to export, tap change operation terminates, and diverter switch completes one-level pressure regulation;
Preferably, when the tap selector of described on load tap changer is connected with the even number tap of transformer regulating winding, main contact B conducting, main contact A disconnection, vacuum contact A conducting, vacuum contact B conducting, change over switch T
1middle moving contact be connected with the second fixed contact, change over switch T
2moving contact be connected with the second fixed contact, load current I
nexport through main contact B; When described tap selector is transformed into odd number tap by described even number tap, the method for operation of described transition circuit comprises:
S201: disconnect described main contact B, load current I
nflow through change over switch T successively
2export with vacuum contact B;
S202: disconnect described vacuum contact B, produces electric arc; After this arc extinction, load current I
nflow through transition resistance R successively
1, change over switch T
1export with vacuum contact A, the recovery voltage U at described vacuum contact B two ends
b=I
n× R
1;
S203: after electric arc extinguishes completely in vacuum contact B, change over switch T
2moving contact and the first fixed contact disconnect, load current I
nflow through transition resistance R successively
1, change over switch T
1export with vacuum contact A;
S204: change over switch T
2moving contact and the second fixed contact close, load current I
nflow through transition resistance R successively
1, change over switch T
1export with vacuum contact A;
S205: closed vacuum contact B, transition circuit forms bridge joint, produces circulating current
load current I
nevenly through vacuum contact A and vacuum contact B; Flow through change over switch T successively
2with the electric current of vacuum contact B
wherein, described U
sfor on load tap changer step voltage;
S206: disconnect vacuum contact A, produces electric arc; After this arc extinction, load current I
nflow through transition resistance R successively
2, change over switch T
2export with vacuum contact B; The recovery voltage at described vacuum contact A two ends is U
a=U
s+ I
nr
2;
S207: change over switch T
1moving contact and its second fixed contact disconnect, load current I
nflow through transition resistance R successively
2, change over switch T
2export with vacuum contact B;
S208: change over switch T
1moving contact and the first fixed contact close, load current I
nflow through transition resistance R successively
2, change over switch T
2export with vacuum contact B, and flow through change over switch T successively
1export with vacuum contact A;
S209: closed main contact A, load current I
nexport through main contact A, tap change operation terminates, and diverter switch completes one-level pressure regulation.
Compared with immediate prior art, excellent effect of the present invention is:
1, a kind of vacuum type on load tap changer transition circuit provided by the invention, the recovery voltage of each fracture is only the half of the recovery voltage of single break, effectively can reduce the recovery voltage between contact fracture.
2, a kind of vacuum type on load tap changer transition circuit provided by the invention, series connection double-fracture is by identical operating current, and on two vacuum contacts, scaling loss is substantially identical.
3, a kind of vacuum type on load tap changer transition circuit provided by the invention, the main switching contact of diverter switch of on load tap changer and the task switching of transition contact are served as in turn by two-way vacuum tube, changeover program is symmetrical, make two-way vacuum contact scaling loss completely the same, greatly improve whole switching electrical life-span.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is further described.
Fig. 1: vacuum type on load tap changer transition circuit transition diagram A in the embodiment of the present invention;
Fig. 2: vacuum type on load tap changer transition circuit transition diagram B in the embodiment of the present invention;
Fig. 3: vacuum type on load tap changer transition circuit transition diagram C in the embodiment of the present invention;
Fig. 4: vacuum type on load tap changer transition circuit transition diagram D in the embodiment of the present invention;
Fig. 5: vacuum type on load tap changer transition circuit transition diagram E in the embodiment of the present invention;
Fig. 6: vacuum type on load tap changer transition circuit transition diagram F in the embodiment of the present invention;
Fig. 7: vacuum type on load tap changer transition circuit transition diagram G in the embodiment of the present invention;
Fig. 8: vacuum type on load tap changer transition circuit transition diagram H in the embodiment of the present invention;
Fig. 9: vacuum type on load tap changer transition circuit transition diagram I in the embodiment of the present invention;
Figure 10: vacuum type on load tap changer transition circuit transition diagram J in the embodiment of the present invention;
Figure 11: vacuum type on load tap changer transition circuit transition diagram K in the embodiment of the present invention;
Figure 12: the DC waveform figure of vacuum type on load tap changer transition circuit conversion program in the embodiment of the present invention;
Wherein, 101-change over switch T
1the first fixed contact; 102-change over switch T
1the second fixed contact; 103-change over switch T
1moving contact; 201-change over switch T
2the first fixed contact; 202-change over switch T
2the second fixed contact; 203-change over switch T
2moving contact.
Embodiment
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the present invention, and can not limitation of the present invention be interpreted as.
The vacuum type on load tap changer transition circuit that the present invention proposes adopts the two resistor transition principle of series connection duplex tube, the task switching of main switching contact and transition contact is served as in turn by two-way vacuum tube, while guarantee changeover program symmetry, make the contact burning of two-way vacuum tube completely the same.
One, the structure of transition circuit
In the present embodiment, vacuum type on load tap changer transition circuit comprises main contact A, main contact B, vacuum contact A, vacuum contact B, change over switch T
1with change over switch T
2, transition resistance R
1with transition resistance R
2;
(1) odd number of points of main contact A and transformer regulating winding connects in succession, and main contact B is connected with the even number tap of transformer regulating winding; Namely as shown in Figure 1, main contact A and N puts and connects, and main contact B and N+1 puts and connects.
(2) change over switch T
1comprise the first fixed contact, the second fixed contact and moving contact, wherein the first fixed contact and odd number of points connect in succession, and the second fixed contact is by transition resistance R
1be connected with even number tap, one end of moving contact is connected with vacuum contact A, simultaneously the other end of moving contact and the first fixed contact, and is slidably connected with the second fixed contact.
Change over switch T
2comprise the first fixed contact, the second fixed contact and moving contact, wherein the first fixed contact is by transition resistance R
2connect in succession with odd number of points, the second fixed contact is connected with even number tap, and one end of moving contact is connected with vacuum contact B, simultaneously the other end of moving contact and the first fixed contact, and is slidably connected with the second fixed contact.
Transition resistance R in the present embodiment
1with transition resistance R
2resistance identical, i.e. R
1=R
2=R.
(3) vacuum contact A and vacuum contact B includes the vacuum contact of two series connection;
As shown in Figure 1, vacuum contact A comprises vacuum contact V11 and V12 of series connection, and vacuum contact B comprises vacuum contact V21 and V22 of series connection.
Main contact A, main contact B, vacuum contact A are all connected with transformer neutral point with the other end of vacuum contact B, with output load current.
Two, the method for operation of transition circuit
The change over selector that suppose there is the tap selector of on-load shunting switch just puts invariant position, and on load tap changer gear numbering is consistent with tap selector sets of contacts label, and on load tap changer gear will rise to an even gear N+1 from an odd gear N.
(1) when the odd number of points of tap selector and transformer regulating winding connects in succession, as shown in Figure 1, main contact A conducting, main contact B disconnection, vacuum contact A conducting, vacuum contact B conducting, change over switch T
1moving contact be connected with the first fixed contact, change over switch T
2moving contact be connected with the first fixed contact;
1, change to even number tap when tap selector is switched through by odd number of points, concrete operation method comprises:
(1) as shown in Figure 1, main contact A closes, load current I
nexport through main contact A;
(2) as shown in Figure 2, described main contact A is disconnected, load current I
nflow through change over switch T successively
1export with vacuum contact A;
(3) as shown in Figure 3, disconnect described vacuum contact A, produce electric arc, after this arc extinction, load current I
nflow through transition resistance R successively
2, change over switch T
2export with vacuum contact B, the recovery voltage U at described vacuum contact A two ends
a=I
n× R
2;
(4) as shown in Figure 4, after in vacuum contact A, electric arc extinguishes completely, change over switch T
1moving contact and the first fixed contact disconnect, load current I
nflow through transition resistance R successively
2, change over switch T
2export with vacuum contact B;
(5) as shown in Figure 5, change over switch T
1moving contact and the second fixed contact close, load current I
nflow through transition resistance R successively
2, change over switch T
2export with vacuum contact B;
(6) as shown in Figure 6, described vacuum contact A closes, and transition circuit forms bridge joint, produces circulating current
vacuum contact A by circulation and load current equidirectional, can think that load current is evenly through vacuum contact A and B, then flow through change over switch T
1, vacuum contact A electric current be:
u
sfor on load tap changer step voltage;
(7) as shown in Figure 7, vacuum contact B disconnects, and produces electric arc, after this arc extinction, and load current I
nflow through transition resistance R successively
1, change over switch T
1export with vacuum contact A.So producing recovery voltage at vacuum contact B two ends is U
b=U
s+ I
nr
1=U
s+ I
nr, U
sfor on load tap changer step voltage.
(8) as shown in Figure 8, change over switch T
2moving contact and the first fixed contact disconnect, load current I
nflow through transition resistance R successively
1, change over switch T
1export with vacuum contact A;
(9) as shown in Figure 9, change over switch T
2moving contact and the second fixed contact close, load current I
nflow through transition resistance R successively
1, change over switch T
1export with vacuum contact A;
(10) as shown in Figure 10, change over switch T
2moving contact and the second fixed contact closed after, load current I
nflow through change over switch T successively
2export with vacuum contact B;
(11) as shown in figure 11, main contact B closes, and carries electric current I
nflow through main switching contact B to export, tap change operation terminates, and diverter switch completes one-level pressure regulation.
2, change to even number tap when tap selector is switched through by odd number of points, the DC waveform figure of transition circuit conversion program as shown in figure 12, wherein:
T
1refer to: the time that main contact A disconnects in advance than main vacuum contact A;
T
2refer to: the blow-out time of above-mentioned steps (3) vacuum contact A;
T
3refer to: in above-mentioned steps (4), change over switch T
1opening time;
T
4refer to: in above-mentioned steps (5), change over switch T
1oN time;
T
5refer to: vacuum contact A, vacuum contact B, transition resistance R in above-mentioned steps (6)
1with transition resistance R
2the time that full-bridge connects;
T
6refer to: the blow-out time of above-mentioned steps (7) vacuum contact B;
T
7refer to: in above-mentioned steps (8), change over switch T
2opening time;
T
8refer to: in above-mentioned steps (9), change over switch T
2oN time;
T
9refer to: the time that vacuum contact B connects in advance than main contact B;
Wherein t
2and t
6the blow-out time be greater than
to ensure reliable blow-out, wherein f is the frequency exchanged.
(2) when the tap selector of on load tap changer is connected with the even number tap of transformer regulating winding, as shown in figure 11, main contact B conducting, main contact A disconnection, vacuum contact A conducting, vacuum contact B conducting, change over switch T
1moving contact be connected with the second fixed contact, change over switch T
2moving contact be connected with the second fixed contact, load current I
nexport through main contact B.
When tap selector is transformed into odd number tap by even number tap, it is completely contrary that concrete operation method and tap selector switch through the operating process of changing to even number tap by odd number of points, is specially:
(1) as shown in Figure 10, described main contact B is disconnected, load current I
nflow through change over switch T successively
2export with vacuum contact B;
(2) as shown in Figure 9, disconnect described vacuum contact B, produce electric arc, after this arc extinction, load current I
nflow through transition resistance R successively
1, change over switch T
1export with vacuum contact A, the recovery voltage U at described vacuum contact B two ends
b=I
n× R
1=I
nr;
(3) as shown in Figure 8, after in vacuum contact B, electric arc extinguishes completely, change over switch T
2moving contact and the first fixed contact disconnect, load current I
nflow through transition resistance R successively
1, change over switch T
1export with vacuum contact A;
(4) as shown in Figure 7, change over switch T
2moving contact and the second fixed contact close, load current I
nflow through transition resistance R successively
1, change over switch T
1export with vacuum contact A;
(5) as shown in Figure 6, described vacuum contact B closes, and transition circuit forms bridge joint, produces circulating current
vacuum contact B by circulation and load current equidirectional, can think that load current is evenly through vacuum contact A and B, then flow through change over switch T
2, vacuum contact B electric current be:
u
sfor on load tap changer step voltage;
(6) as shown in Figure 5, vacuum contact A disconnects, and produces electric arc, after this arc extinction, and load current I
nflow through transition resistance R successively
2, change over switch T
2export with vacuum contact B.So producing recovery voltage at vacuum contact A two ends is U
a=U
s+ I
nr
2=U
s+ I
nr, U
sfor on load tap changer step voltage.
(7) as shown in Figure 4, change over switch T
1moving contact and the second fixed contact disconnect, load current I
nflow through transition resistance R successively
2, change over switch T
2export with vacuum contact B;
(8) as shown in Figure 3, change over switch T
1moving contact and the first fixed contact close, load current I
nflow through transition resistance R successively
2, change over switch T
2export with vacuum contact B;
(9) as shown in Figure 2, change over switch T
1moving contact and the first fixed contact closed after, load current I
nflow through change over switch T successively
1export with vacuum contact A;
(10) as shown in Figure 1, main contact A closes, load current I
nexport through main contact A, tap change operation terminates, and diverter switch completes one-level pressure regulation.
Three, in the present embodiment, the diverter switch task of vacuum type on load tap changer transition circuit is as shown in the table:
Wherein, I
nfor load current; N is tap change operation number of times; U
sfor on load tap changer step voltage; R is transition resistance.
Finally should be noted that: described embodiment is only some embodiments of the present application, instead of whole embodiments.Based on the embodiment in the application, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the application's protection.
Claims (5)
1. a vacuum type on load tap changer transition circuit, is characterized in that, described transition circuit comprises main contact A, main contact B, vacuum contact A, vacuum contact B, change over switch T
1, change over switch T
2, transition resistance R
1with transition resistance R
2;
The odd number of points of described main contact A and transformer regulating winding connects in succession, and main contact B is connected with the even number tap of transformer regulating winding;
Described change over switch T
1comprise the first fixed contact, the second fixed contact and moving contact; Described first fixed contact and described odd number of points connect in succession; Described second fixed contact is by transition resistance R
1be connected with described even number tap; One end of described moving contact is connected with vacuum contact A, the other end and the first fixed contact, and the second fixed contact is slidably connected;
Described change over switch T
2comprise the first fixed contact, the second fixed contact and moving contact; Described first fixed contact is by transition resistance R
2connect in succession with described odd number of points; Described second fixed contact is connected with described even number tap; One end of described moving contact is connected with vacuum contact B, the other end and the first fixed contact, and the second fixed contact is slidably connected.
2. transition circuit as claimed in claim 1, is characterized in that, described vacuum contact A and vacuum contact B includes the vacuum contact of two series connection; Described transition resistance R
1with transition resistance R
2resistance identical.
3. transition circuit as claimed in claim 1, it is characterized in that, described main contact A, main contact B, vacuum contact A are all connected with transformer neutral point with the other end of vacuum contact B, with output load current.
4. the method for operation of the transition circuit as described in any one of claim 1-3, it is characterized in that, when the tap selector of described on load tap changer and the odd number of points of transformer regulating winding connect in succession, main contact A conducting, main contact B disconnection, vacuum contact A conducting, vacuum contact B conducting, change over switch T
1moving contact be connected with its first fixed contact, change over switch T
2moving contact be connected with its first fixed contact, load current exports through main contact A; Change to even number tap when described tap selector is switched through by described odd number of points, the method for operation of described transition circuit comprises:
S101: disconnect described main contact A, load current I
nflow through change over switch T successively
1export with vacuum contact A;
S102: disconnect described vacuum contact A, produces electric arc; After this arc extinction, load current I
nflow through transition resistance R successively
2, change over switch T
2export with vacuum contact B, the recovery voltage U at described vacuum contact A two ends
a=I
n× R
2;
S103: after electric arc extinguishes completely in vacuum contact A, change over switch T
1moving contact and the first fixed contact disconnect, load current I
nflow through transition resistance R successively
2, change over switch T
2export with vacuum contact B;
S104: change over switch T
1moving contact and its second fixed contact close, load current I
nflow through transition resistance R successively
2, change over switch T
2export with vacuum contact B;
S105: closed described vacuum contact A, transition circuit forms bridge joint, produces circulating current
load current I
nevenly through vacuum contact A and vacuum contact B; Flow through described change over switch T successively
1with the electric current of vacuum contact A
wherein, described U
sfor on load tap changer step voltage;
S106: disconnect vacuum contact B, produces electric arc; After this arc extinction, load current I
nflow through transition resistance R successively
1, change over switch T
1export with vacuum contact A; The recovery voltage at described vacuum contact B two ends is U
b=U
s+ I
nr
1;
S107: after electric arc extinguishes completely in vacuum contact B, change over switch T
2moving contact and its first fixed contact disconnect, load current I
nflow through transition resistance R successively
1, change over switch T
1export with vacuum contact A;
S108: change over switch T
2moving contact and its second fixed contact close, load current I
nflow through transition resistance R successively
1, change over switch T
1export with vacuum contact A, and flow through change over switch T successively
2export with vacuum contact B;
S109: closed main contact B, carry electric current I
nflow through main contact B to export, tap change operation terminates, and diverter switch completes one-level pressure regulation.
5. method of operation as claimed in claim 4, it is characterized in that, when the tap selector of described on load tap changer is connected with the even number tap of transformer regulating winding, main contact B conducting, main contact A disconnection, vacuum contact A conducting, vacuum contact B conducting, change over switch T
1middle moving contact be connected with the second fixed contact, change over switch T
2moving contact be connected with the second fixed contact, load current I
nexport through main contact B; When described tap selector is transformed into odd number tap by described even number tap, the method for operation of described transition circuit comprises:
S201: disconnect described main contact B, load current I
nflow through change over switch T successively
2export with vacuum contact B;
S202: disconnect described vacuum contact B, produces electric arc; After this arc extinction, load current I
nflow through transition resistance R successively
1, change over switch T
1export with vacuum contact A, the recovery voltage U at described vacuum contact B two ends
b=I
n× R
1;
S203: after electric arc extinguishes completely in vacuum contact B, change over switch T
2moving contact and the first fixed contact disconnect, load current I
nflow through transition resistance R successively
1, change over switch T
1export with vacuum contact A;
S204: change over switch T
2moving contact and the second fixed contact close, load current I
nflow through transition resistance R successively
1, change over switch T
1export with vacuum contact A;
S205: closed vacuum contact B, transition circuit forms bridge joint, produces circulating current
load current I
nevenly through vacuum contact A and vacuum contact B; Flow through change over switch T successively
2with the electric current of vacuum contact B
wherein, described U
sfor on load tap changer step voltage;
S206: disconnect vacuum contact A, produces electric arc; After this arc extinction, load current I
nflow through transition resistance R successively
2, change over switch T
2export with vacuum contact B; The recovery voltage at described vacuum contact A two ends is U
a=U
s+ I
nr
2;
S207: change over switch T
1moving contact and its second fixed contact disconnect, load current I
nflow through transition resistance R successively
2, change over switch T
2export with vacuum contact B;
S208: change over switch T
1moving contact and the first fixed contact close, load current I
nflow through transition resistance R successively
2, change over switch T
2export with vacuum contact B, and flow through change over switch T successively
1export with vacuum contact A;
S209: closed main contact A, load current I
nexport through main contact A, tap change operation terminates, and diverter switch completes one-level pressure regulation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410773102.7A CN104465168A (en) | 2014-12-12 | 2014-12-12 | Transition circuit of vacuum type on-load tap-changer and operation method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410773102.7A CN104465168A (en) | 2014-12-12 | 2014-12-12 | Transition circuit of vacuum type on-load tap-changer and operation method |
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| Publication Number | Publication Date |
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| CN104465168A true CN104465168A (en) | 2015-03-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410773102.7A Pending CN104465168A (en) | 2014-12-12 | 2014-12-12 | Transition circuit of vacuum type on-load tap-changer and operation method |
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| Country | Link |
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| CN (1) | CN104465168A (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107248461A (en) * | 2017-07-21 | 2017-10-13 | 上海华明电力设备制造有限公司 | A kind of authentic vacuole switching circuit of vacuum on-load operation switch |
| CN107533929A (en) * | 2015-04-22 | 2018-01-02 | 赖茵豪森机械制造公司 | Load ratio bridging switch, the method for manipulating load ratio bridging switch and the electrical equipment with load ratio bridging switch |
| CN107622885A (en) * | 2017-07-21 | 2018-01-23 | 上海华明电力设备制造有限公司 | A kind of switch with double-isolation of vacuum on-load operation switch, double-fracture vacuum bubbles switching circuit |
| DE102019115970A1 (en) * | 2019-06-12 | 2020-12-17 | Maschinenfabrik Reinhausen Gmbh | On-load tap-changer |
| CN112216494A (en) * | 2020-09-29 | 2021-01-12 | 许继集团有限公司 | On-load tap-changer and operation control method thereof |
| CN112447383A (en) * | 2020-10-22 | 2021-03-05 | 中国电力科学研究院有限公司 | Transition circuit for switching non-multiplexing power electronic on-load tap-changer |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007227908A (en) * | 2006-01-27 | 2007-09-06 | Toshiba Corp | On-load tap changer |
| DE102010045901A1 (en) * | 2010-09-17 | 2012-03-22 | Maschinenfabrik Reinhausen Gmbh | Step switch and vacuum interrupter for such a tap changer |
| CN202178175U (en) * | 2011-06-15 | 2012-03-28 | 上海华明电力设备集团有限公司 | Vacuum on-load tap-changer double-vacuum-tube transition circuit |
| CN202258896U (en) * | 2011-09-30 | 2012-05-30 | 上海华明电力设备集团有限公司 | Vacuum tube series parallel circuit structure for vacuum on-load tapping switch |
| CN202258989U (en) * | 2011-08-19 | 2012-05-30 | 上海华齐电力设备制造有限公司 | Switching mechanism for vacuum on-load tap switch |
| CN204230109U (en) * | 2014-12-12 | 2015-03-25 | 国家电网公司 | A kind of vacuum type on load tap changer transition circuit |
-
2014
- 2014-12-12 CN CN201410773102.7A patent/CN104465168A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007227908A (en) * | 2006-01-27 | 2007-09-06 | Toshiba Corp | On-load tap changer |
| DE102010045901A1 (en) * | 2010-09-17 | 2012-03-22 | Maschinenfabrik Reinhausen Gmbh | Step switch and vacuum interrupter for such a tap changer |
| CN202178175U (en) * | 2011-06-15 | 2012-03-28 | 上海华明电力设备集团有限公司 | Vacuum on-load tap-changer double-vacuum-tube transition circuit |
| CN202258989U (en) * | 2011-08-19 | 2012-05-30 | 上海华齐电力设备制造有限公司 | Switching mechanism for vacuum on-load tap switch |
| CN202258896U (en) * | 2011-09-30 | 2012-05-30 | 上海华明电力设备集团有限公司 | Vacuum tube series parallel circuit structure for vacuum on-load tapping switch |
| CN204230109U (en) * | 2014-12-12 | 2015-03-25 | 国家电网公司 | A kind of vacuum type on load tap changer transition circuit |
Cited By (15)
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|---|---|---|---|---|
| CN107533929A (en) * | 2015-04-22 | 2018-01-02 | 赖茵豪森机械制造公司 | Load ratio bridging switch, the method for manipulating load ratio bridging switch and the electrical equipment with load ratio bridging switch |
| CN107533929B (en) * | 2015-04-22 | 2020-07-17 | 赖茵豪森机械制造公司 | On-load tap changer, method for operating an on-load tap changer and electrical device |
| CN107248461A (en) * | 2017-07-21 | 2017-10-13 | 上海华明电力设备制造有限公司 | A kind of authentic vacuole switching circuit of vacuum on-load operation switch |
| CN107622885A (en) * | 2017-07-21 | 2018-01-23 | 上海华明电力设备制造有限公司 | A kind of switch with double-isolation of vacuum on-load operation switch, double-fracture vacuum bubbles switching circuit |
| DE102019115970A1 (en) * | 2019-06-12 | 2020-12-17 | Maschinenfabrik Reinhausen Gmbh | On-load tap-changer |
| CN112216494A (en) * | 2020-09-29 | 2021-01-12 | 许继集团有限公司 | On-load tap-changer and operation control method thereof |
| CN112447383A (en) * | 2020-10-22 | 2021-03-05 | 中国电力科学研究院有限公司 | Transition circuit for switching non-multiplexing power electronic on-load tap-changer |
| CN112447383B (en) * | 2020-10-22 | 2022-11-25 | 中国电力科学研究院有限公司 | Transition circuit for switching non-multiplexing power electronic on-load tap-changer |
| CN112670067A (en) * | 2020-11-18 | 2021-04-16 | 中国电力科学研究院有限公司 | Symmetrical vacuum bubble load balancing transition circuit device and control method |
| WO2022104902A1 (en) * | 2020-11-18 | 2022-05-27 | 中国电力科学研究院有限公司 | Symmetrical vacuum bubble load-balancing transition circuit apparatus, and control method |
| CN112670067B (en) * | 2020-11-18 | 2022-07-01 | 中国电力科学研究院有限公司 | Symmetrical vacuum bubble load balancing transition circuit device and control method |
| CN112885637A (en) * | 2021-01-13 | 2021-06-01 | 株洲中车时代电气股份有限公司 | Conversion drum type three-position switch device and control method and system thereof |
| CN113113261A (en) * | 2021-03-19 | 2021-07-13 | 北京航天控制仪器研究所 | Double-vacuum-tube reciprocating transition circuit of vacuum on-load tap-changer and switching control method thereof |
| CN113571314A (en) * | 2021-07-07 | 2021-10-29 | 董跃周 | Compact vacuum on-load tap-changer switching mechanism for converter transformer |
| WO2023005190A1 (en) * | 2021-07-27 | 2023-02-02 | 中国电力科学研究院有限公司 | Reciprocating switching mechanism having on-load tap changer |
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