CN207458782U - A kind of switch with double-isolation of vacuum on-load operation switch, double-fracture vacuum bubbles switching circuit - Google Patents
A kind of switch with double-isolation of vacuum on-load operation switch, double-fracture vacuum bubbles switching circuit Download PDFInfo
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- CN207458782U CN207458782U CN201720893099.1U CN201720893099U CN207458782U CN 207458782 U CN207458782 U CN 207458782U CN 201720893099 U CN201720893099 U CN 201720893099U CN 207458782 U CN207458782 U CN 207458782U
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Abstract
A kind of switch with double-isolation of vacuum on-load operation switch, double-fracture vacuum bubbles switching circuit disclosed in the utility model, including three-phase switch with double-isolation, double-fracture vacuum bubbles switching circuit and driving mechanism, wherein per phase switch with double-isolation, double-fracture vacuum bubbles switching circuit includes the main flow passage switch of N tap side, N+1 taps the main flow passage switch in side, first, second transition resistance, first, second isolation switching switch, first, second double-fracture vacuum bubbles；First and second point of vacuum bubbles in first, second double-fracture vacuum bubbles, the second double-fracture vacuum bubbles in the utility model electrically connect for series connection, first, second point of vacuum bubbles in first and second double-fracture vacuum bubbles are opened simultaneously and closed, within first, second double-fracture vacuum bubbles service life cycle, when one of them point of vacuum bubbles gas leakage effectively cannot turn off electric arc, another point of vacuum bubbles still can be turned off effectively, it can ensure the normal handoff procedure of switch, effectively increase the security of vacuum on-load operation switch.
Description
Technical field
The utility model is related to vacuum on-load operation switch technical field, more particularly to a kind of vacuum on-load operation switch
Switch with double-isolation, double-fracture vacuum bubbles switching circuit.
Background technology
In large capacity EHV transmission field, in order to improve power quality, the vacuum loaded tap-off of vacuum bubbles is gradually adopted
Switch substitutes the load ratio bridging switch of tradition machinery formula contact, has been a kind of technological trend.
Using the high dielectric property under vacuum bubbles high vacuum environment and strong blow-out feature, the switching in handoff procedure occurs
In vacuum bubbles, vacuum on-load operation switch performance and service life are improved, and greatly reduces the volume of equipment.
The ZL200920076183.X China that the switching principle of vacuum on-load operation switch can be found in the applicant's application is real
Use new patent.
Since vacuum bubbles are the precision components of a high-seal, and use is in super-pressure, the environment of high current, to it
Vacuum degree and the requirement of other performance parameters are very high.The vacuum degree of vacuum bubbles is the important technology index of power vacuum switch, when
Vacuum degree is less than 1.33 × 10-5During Pa, it is necessary to replace vacuum interrupter, otherwise will cause the accident.
In order to provide the reliability in vacuum bubbles cutting-off process, the applicant produces on March 20th, 2013 to State Intellectual
Power office has submitted a vacuum bubbles utility application in relation to double break mouth structure, has authorized, Patent No.
201210091111.3.The vacuum bubbles of the double break mouth structure are actually made of two vacuum bubbles, and the static side of two vacuum bubbles connects
It is connected together.But there is presently no reported in relation to the vacuum bubbles of the double-fracture are applied to the related of vacuum on-load operation switch
Road.
Utility model content
The technical problem to be solved by the utility model is to be directed to current vacuum on-load operation switch and use to work as vacuum bubbles
It is easy to cause the problem of accident occurs and a kind of switch with double-isolation of vacuum on-load operation switch, the switching of double-fracture vacuum bubbles is provided
Circuit, to improve vacuum on-load operation switch reliability.
Technical problem to be solved in the utility model can be achieved through the following technical solutions：
A kind of switch with double-isolation of vacuum on-load operation switch, double-fracture vacuum bubbles switching circuit, including the double isolation of three-phase
Switch, double-fracture vacuum bubbles switching circuit and driving mechanism, wherein per phase switch with double-isolation, double-fracture vacuum bubbles switching circuit bag
Include the main flow passage switch of N tap side, the main flow passage switch in N+1 tap sides, First Transition resistance, the second transition resistance, the first isolation are cut
Change switch, the second isolation switching switch, the first double-fracture vacuum bubbles, the second double-fracture vacuum bubbles；The N tap side master is through-flow to open
One end of pass is electrically connected with transformer N tap tap, and the other end of the main flow passage switch of N tap side is electrically connected with neutral point；
One end of the N+1 taps main flow passage switch in side is electrically connected with the transformer N+1 shunting taps, and the N+1 taps side is main logical
The other end of stream switch is electrically connected with neutral point；The first isolation switching switch, the second isolation switching switch are respectively provided with first
Static contact, the second static contact and a moving contact, moving contact switch between the first static contact and the second static contact；It is described
First static contact of the first isolation switching switch is electrically connected with the transformer N tap tap, and first isolates the of switching switch
Two static contacts are electrically connected by First Transition resistance with the transformer N+1 shunting taps；The second isolation switching switch
First static contact is electrically connected with the transformer N+1 shunting taps, and the second static contact of the second isolation switching switch passes through second
Transition resistance is electrically connected with the transformer N tap tap；The static side of first point of vacuum bubbles in first double-fracture vacuum bubbles with
The static side of second point of vacuum bubbles in first double-fracture vacuum bubbles is connected as a single entity, first point of vacuum in the first double-fracture vacuum bubbles
The moving contact that the moved end of bubble isolates with described first in switching switch is electrically connected, second point of vacuum in the first double-fracture vacuum bubbles
The moved end of bubble is electrically connected with neutral point；The static side of first point of vacuum bubbles in second double-fracture vacuum bubbles and the second double-fracture vacuum
The static side of second point of vacuum bubbles in bubble is connected as a single entity, the moved end of first point of vacuum bubbles in the second double-fracture vacuum bubbles with it is described
Moving contact in second isolation switching switch is electrically connected, moved end and the neutrality of second point of vacuum bubbles in the second double-fracture vacuum bubbles
Point electrical connection；First point vacuum bubbles of the driving mechanism in the first double-fracture vacuum bubbles are driven simultaneously at the first time
Moved end and the moved end of second point of vacuum bubbles act simultaneously, make first point of vacuum bubbles and second in the first double-fracture vacuum bubbles
Vacuum bubbles is divided to cut off and turn on simultaneously；The driving mechanism drives in the second time simultaneously in the second double-fracture vacuum bubbles
The moved end of first point of vacuum bubbles and the moved end of second point of vacuum bubbles act simultaneously, make first in the second double-fracture vacuum bubbles
Divide vacuum bubbles and second point of vacuum bubbles is cut off simultaneously and conducting；The driving mechanism is also driven in the first isolation switching switch
Moving contact described first isolation switching switch in the first static contact and the second static contact between switch, the driving mechanism
Also first static contact and the of the moving contact in the described second isolation switching switch in the second isolation switching switch is driven
Switch between two static contacts.
In a preferred embodiment of the utility model, the vacuum on-load operation switch is from the N tap side of transformer
The program of tap changing to N+1 tap side taps is as follows：
(1) the main flow passage switch of N tap side is closed, and the main flow passage switch in N+1 taps side disconnects, in the first isolation switching switch
Moving contact contacts with the first static contact in the first isolation switching switch and isolates the second static contact in switching switch with first
Separation；Second isolation switching switch in moving contact with second isolate switching switch in the second static contact contact and with second every
From the first static contact separation in switching switch；First point of vacuum bubbles, second point of vacuum bubbles in first double-fracture vacuum bubbles are equal
In the conduction state, first point of vacuum bubbles, second point of vacuum bubbles in the second double-fracture vacuum bubbles are also in conducting state, become
The electric current of depressor N tap side tap flows to neutral point by the main flow passage switch of N tap side；
(2) the main flow passage switch of N tap side disconnects, and the main flow passage switch in N+1 taps side disconnects, in the first isolation switching switch
Moving contact contacts with the first static contact in the first isolation switching switch and isolates the second static contact in switching switch with first
Separation；Second isolation switching switch in moving contact with second isolate switching switch in the second static contact contact and with second every
From the first static contact separation in switching switch；First point of vacuum bubbles, second point of vacuum bubbles in first double-fracture vacuum bubbles are equal
In the conduction state, first point of vacuum bubbles, second point of vacuum bubbles in the second double-fracture vacuum bubbles are also in conducting state, become
During the electric current of depressor N tap side tap is flowed to by first point of vacuum bubbles, the second point of vacuum bubbles in the first double-fracture vacuum bubbles
Property point；
(3) the main flow passage switch of N tap side disconnects, and the main flow passage switch in N+1 taps side disconnects, in the first isolation switching switch
Moving contact contacts with the first static contact in the first isolation switching switch and isolates the second static contact in switching switch with first
Separation；Second isolation switching switch in moving contact with second isolate switching switch in the second static contact contact and with second every
From the first static contact separation in switching switch；First point of vacuum bubbles, second point of vacuum bubbles in first double-fracture vacuum bubbles are equal
It is off, the first point of vacuum bubbles, second point of vacuum bubbles in the second double-fracture vacuum bubbles are also in conducting state, become
The electric current of depressor N tap side tap by first point of vacuum bubbles in the second transition resistance, the second double-fracture vacuum bubbles, second point
Vacuum bubbles flow to neutral point；
(4) the main flow passage switch of N tap side disconnects, and the main flow passage switch in N+1 taps side disconnects, in the first isolation switching switch
Moving contact is isolated the first static contact in switching switch with first and is departed from, be switched to isolate with first it is second quiet in switching switch
Contact；The second static contact that moving contact in second isolation switching switch is isolated with second in switching switch contact and with the
The first static contact separation in two isolation switching switches；First point of vacuum bubbles, second point of vacuum in first double-fracture vacuum bubbles
It steeps and is in off-state, the first point of vacuum bubbles, second point of vacuum bubbles in the second double-fracture vacuum bubbles are also in conducting shape
State, the electric current of transformer N tap side tap by first point of vacuum bubbles in the second transition resistance, the second double-fracture vacuum bubbles,
Second point of vacuum bubbles flows to neutral point；
(5) the main flow passage switch of N tap side disconnects, and the main flow passage switch in N+1 taps side disconnects, in the first isolation switching switch
Moving contact contacts with the second static contact in the first isolation switching switch and isolates the first static contact in switching switch with first
Depart from；Second isolation switching switch in moving contact with second isolate switching switch in the second static contact contact and with second every
From the first static contact separation in switching switch；First point of vacuum bubbles, second point of vacuum bubbles in first double-fracture vacuum bubbles are equal
In the conduction state, first point of vacuum bubbles, second point of vacuum bubbles in the second double-fracture vacuum bubbles are also in conducting state, become
The electric current of depressor N tap side tap by first point of vacuum bubbles in the second transition resistance, the second double-fracture vacuum bubbles, second point
Vacuum bubbles flow to neutral point, and the electric current of transformer N+1 tap side taps passes through in First Transition resistance, the first double-fracture vacuum bubbles
First point of vacuum bubbles, second point of vacuum bubbles flow to neutral point；
(5) the main flow passage switch of N tap side disconnects, and the main flow passage switch in N+1 taps side disconnects, in the first isolation switching switch
Moving contact contacts with the second static contact in the first isolation switching switch and isolates the first static contact in switching switch with first
Depart from；Second isolation switching switch in moving contact with second isolate switching switch in the second static contact contact and with second every
From the first static contact separation in switching switch；First point of vacuum bubbles, second point of vacuum bubbles in first double-fracture vacuum bubbles are equal
In the conduction state, first point of vacuum bubbles, second point of vacuum bubbles in the second double-fracture vacuum bubbles are also in off-state, become
The electric current of depressor N+1 tap side taps passes through first point of vacuum bubbles, second in First Transition resistance, the first double-fracture vacuum bubbles
Point vacuum bubbles flow to neutral point；
(6) the main flow passage switch of N tap side disconnects, and the main flow passage switch in N+1 taps side disconnects, in the first isolation switching switch
Moving contact contacts with the second static contact in the first isolation switching switch and isolates the first static contact in switching switch with first
Depart from；Second isolation switching switch in moving contact with second isolate switching switch in the second static contact contact and with second every
From the first static contact separation in switching switch；First point of vacuum bubbles, second point of vacuum bubbles in first double-fracture vacuum bubbles are equal
In the conduction state, first point of vacuum bubbles, second point of vacuum bubbles in the second double-fracture vacuum bubbles are also in off-state, become
The electric current of depressor N+1 tap side taps passes through first point of vacuum bubbles, second in First Transition resistance, the first double-fracture vacuum bubbles
Point vacuum bubbles flow to neutral point；
(7) the main flow passage switch of N tap side disconnects, and the main flow passage switch in N+1 taps side disconnects, in the first isolation switching switch
Moving contact contacts with the second static contact in the first isolation switching switch and isolates the first static contact in switching switch with first
Depart from；Moving contact in second isolation switching switch is disengaged with the second static contact that second isolates in switching switch, is switched
It is contacted to the first static contact in the second isolation switching switch；First point of vacuum bubbles, second in first double-fracture vacuum bubbles
Point vacuum bubbles are in conducting state, and the first point of vacuum bubbles, second point of vacuum bubbles in the second double-fracture vacuum bubbles are also in
Off-state, the electric current of transformer N+1 tap side taps pass through first point in First Transition resistance, the first double-fracture vacuum bubbles
Vacuum bubbles, second point of vacuum bubbles flow to neutral point；
(8) the main flow passage switch of N tap side disconnects, and the main flow passage switch in N+1 taps side disconnects, in the first isolation switching switch
Moving contact contacts with the second static contact in the first isolation switching switch and isolates the first static contact in switching switch with first
Depart from；Second isolation switching switch in moving contact with second isolate switching switch in the first static contact contact and with second every
Depart from from the second static contact in switching switch；First point of vacuum bubbles, second point of vacuum bubbles in first double-fracture vacuum bubbles are equal
In the conduction state, first point of vacuum bubbles, second point of vacuum bubbles in the second double-fracture vacuum bubbles are also in off-state, become
The electric current of depressor N+1 tap side taps passes through first point of vacuum bubbles, second in First Transition resistance, the first double-fracture vacuum bubbles
Point vacuum bubbles flow to neutral point；
(9) the main flow passage switch of N tap side disconnects, and the main flow passage switch in N+1 taps side is closed, in the first isolation switching switch
Moving contact contacts with the second static contact in the first isolation switching switch and isolates the first static contact in switching switch with first
Depart from；Second isolation switching switch in moving contact with second isolate switching switch in the first static contact contact and with second every
Depart from from the second static contact in switching switch；First point of vacuum bubbles, second point of vacuum bubbles in first double-fracture vacuum bubbles are equal
In the conduction state, first point of vacuum bubbles, second point of vacuum bubbles in the second double-fracture vacuum bubbles are also in conducting state, become
The electric current of depressor N+1 tap side taps taps the main flow passage switch in side by N+1 and flows to neutral point；Complete the N tap from transformer
Side tap taps the switching of side tap to N+1.
In a preferred embodiment of the utility model, first point of vacuum bubbles in the first double-fracture vacuum bubbles
Moved end and the moved end of second point of vacuum bubbles in the first double-fracture vacuum bubbles are coaxially disposed or are arranged in parallel.
Since the utility model employs technical solution as above, the electric circuit characteristic of the utility model is：From more than circuit
The analysis of handoff procedure understands, during normal switching, electric arc only result from first and second double-fracture vacuum bubbles first point of vacuum bubbles and
In the vacuum chamber of second point of vacuum bubbles, isolation switching switch generates in handoff procedure without electric arc.Transformation in protective efficient switch
Device oil is not contaminated, extends switch service time.
First point of vacuum bubbles and second in the first double-fracture vacuum bubbles, the second double-fracture vacuum bubbles in the utility model
Point vacuum bubbles electrically connect for series connection, first point of vacuum bubbles and second in the first double-fracture vacuum bubbles, the second double-fracture vacuum bubbles
Point vacuum bubbles are opened simultaneously and closed, in the first double-fracture vacuum bubbles, in the second double-fracture vacuum bubbles service life cycle, when it
In a point of vacuum bubbles gas leakage and when cannot effectively turn off electric arc, another point of vacuum bubbles still can be turned off effectively, it is ensured that switch
Normal handoff procedure.
In general, the failure rate in single vacuum bubbles service life cycle is generally 1.7/10000, and therefore, this practicality is new
The first double-fracture vacuum bubbles, the second double-fracture vacuum bubbles of the type probability that breaks down simultaneously are very low, effectively increase vacuum
The security of load ratio bridging switch.
Description of the drawings
Fig. 1 is the switch with double-isolation of the vacuum on-load operation switch of the utility model, double-fracture vacuum bubbles switching circuit electricity
Principle schematic.
Fig. 2 a to Fig. 2 i are the switch with double-isolation of the vacuum on-load operation switch of the utility model, the switching of double-fracture vacuum bubbles
Circuit handoff procedure schematic diagram.
Fig. 3 is in the switch with double-isolation of the vacuum on-load operation switch of the utility model, double-fracture vacuum bubbles switching circuit
The first double-fracture vacuum bubbles, a kind of second structure diagram of double-fracture vacuum bubbles.
Fig. 4 is in the switch with double-isolation of the vacuum on-load operation switch of the utility model, double-fracture vacuum bubbles switching circuit
The first double-fracture vacuum bubbles, the second double-fracture vacuum bubbles another kind structure diagram.
Specific embodiment
Referring to Fig. 1, switch with double-isolation, the double-fracture vacuum bubbles switching electricity of a kind of vacuum on-load operation switch provided in figure
Road, including three-phase switch with double-isolation, double-fracture vacuum bubbles switching circuit and driving mechanism (not shown).
Wherein every phase switch with double-isolation, double-fracture vacuum bubbles switching circuit include main flow passage switch A, N+1 tap of N tap side
The main flow passage switch B in side, transition resistance R1, R2, isolation switching switch T1, T2, double-fracture vacuum bubbles V10, V20.
One end of the main flow passage switch A of N tap side is electrically connected with transformer N tap tap, and the other end is electrically connected with neutral point O
It connects.
One end of the N+1 taps main flow passage switch B in side is electrically connected with transformer N+1 shunting taps, the other end and neutral point O electricity
Connection.
Isolation switching switch T1, T2 is respectively provided with two static contacts T11, T12, T21, T22 and moving contact T13, a T23,
Moving contact T13, T23 are switched between two static contacts T11, T12, T21, T22.
The static contact T11 of isolation switching switch T1 is electrically connected with transformer N tap tap, and static contact T12 passes through transition electricity
Resistance R1 is electrically connected with transformer N+1 shunting taps；Isolate static contact T21 and transformer N+1 the shunting tap electricity of switching switch T2
Connection, static contact T22 are electrically connected by transition resistance R2 with transformer N tap tap.
The static side of point vacuum bubbles V11 in double-fracture vacuum bubbles V10 in double-fracture vacuum bubbles V10 with dividing vacuum bubbles V12
Static side be connected as a single entity, divide the moved end V11a of vacuum bubbles V11 with isolating the electrical connections of the moving contact T13 in switching switch T1, it is point true
The moved end V12a of vacuole V12 is electrically connected with neutral point O.
The static side of point vacuum bubbles V21 in double-fracture vacuum bubbles V20 in the second double-fracture vacuum bubbles V20 with dividing vacuum bubbles
The static side of V22 is connected as a single entity, and divides the moved end V21a of vacuum bubbles V21 with isolating the electrical connections of the moving contact T23 in switching switch T2, point
The moved end of vacuum bubbles V22 is electrically connected with neutral point 0.
Driving mechanism in the moved end V11a for driving point vacuum bubbles V11 in double-fracture vacuum bubbles V10 simultaneously at the first time and
The moved end V12a of point vacuum bubbles V12 is acted simultaneously, make point vacuum bubbles V11, V12 in double-fracture vacuum bubbles V10 and meanwhile cut-out and
Conducting.
Driving mechanism driven simultaneously in the second time point vacuum bubbles V21 in double-fracture vacuum bubbles V20 moved end V21a and
The moved end V22a of point vacuum bubbles V22 is acted simultaneously, make point vacuum bubbles V21, V22 in double-fracture vacuum bubbles V20 and meanwhile cut-out and
Conducting.
Driving mechanism also drives the moving contact T13 in isolation switching switch T1 to switch between two static contacts T11, T12,
Driving mechanism also drives the moving contact T23 in isolation switching switch T2 to switch between two static contacts T21, T22.
Above-mentioned vacuum on-load operation switch taps the program of side tap such as from the N tap side tap changing of transformer to N+1
Under：
(1) it is closed referring to Fig. 2 a, the main flow passage switch A of N tap side, the N+1 taps main flow passage switch B in side is disconnected, isolation switching
Moving contact T13 in switch T1 is contacted with static contact T11 and separated with static contact T12；Isolate the moving contact in switching switch T2
T23 is contacted with static contact T22 and separated with static contact T21；Point vacuum bubbles V11, V12 in double-fracture vacuum bubbles V10 are in
Conducting state, point vacuum bubbles V21, V22 in double-fracture vacuum bubbles V20 are also in conducting state, transformer N tap side tap
Electric current neutral point O is flowed to by the main flow passage switch A of N tap side；
(2) the main flow passage switch A of N tap side is disconnected, and the N+1 taps main flow passage switch B in side is disconnected, in isolation switching switch T1
Moving contact T13 is contacted with static contact T11 and separated with static contact T12；Isolate the moving contact T23 and static contact in switching switch T2
T22 is contacted and separated with static contact T21；Point vacuum bubbles V11, V12 in double-fracture vacuum bubbles V10 are in conducting state, double
Point vacuum bubbles V21, V22 in break vacuum bubble V20 are also in conducting state, and the electric current of transformer N tap side tap passes through
Point vacuum bubbles V11, V12 in double-fracture vacuum bubbles V10 flow to neutral point O；
(3) the main flow passage switch A of N tap side is disconnected, and the N+1 taps main flow passage switch B in side is disconnected, in isolation switching switch T1
Moving contact T13 is contacted with static contact T11 and separated with static contact T12；Isolate the moving contact T23 and static contact in switching switch T2
T22 is contacted and separated with static contact T21；Point vacuum bubbles V11, V12 in double-fracture vacuum bubbles V10 are in off-state, double
Point vacuum bubbles V21, V22 in break vacuum bubble V20 are in conducting state, and the electric current of transformer N tap side tap passed through
Point vacuum bubbles V21, V22 crossed in resistance R2, double-fracture vacuum bubbles V20 flow to neutral point O；
(4) the main flow passage switch A of N tap side is disconnected, and the N+1 taps main flow passage switch B in side is disconnected, in isolation switching switch T1
Moving contact T13 and static contact T11 departs from, and is switched to and is contacted with static contact T12；Isolate moving contact T23 in switching switch T2 with
Static contact T22 is contacted and separated with static contact T21；Point vacuum bubbles V11, V12 in double-fracture vacuum bubbles V10 are in disconnecting shape
State, point vacuum bubbles V21, V22 in double-fracture vacuum bubbles V20 are in conducting state, and the electric current of transformer N tap side tap leads to
Point vacuum bubbles V21, V22 crossed in transition resistance R2, double-fracture vacuum bubbles V20 flow to neutral point O；
(5) the main flow passage switch A of N tap side is disconnected, and the N+1 taps main flow passage switch B in side is disconnected, in isolation switching switch T1
Moving contact T13 is contacted with static contact T12 and departed from static contact T11；Isolate the moving contact T23 and static contact in switching switch T2
T22 is contacted and separated with static contact T21；Point vacuum bubbles V11, V12 in double-fracture vacuum bubbles V10 are in conducting state, double
Point vacuum bubbles V21, V22 in break vacuum bubble V20 are also in conducting state, and the electric current of transformer N tap side tap passes through
Point vacuum bubbles V21, V22 in transition resistance R2, double-fracture vacuum bubbles V20 flow to neutral point, transformer N+1 tap side taps
Electric current flows to neutral point O by point vacuum bubbles V11, V12 in transition resistance R1, double-fracture vacuum bubbles V10；
(5) the main flow passage switch A of N tap side is disconnected, and the N+1 taps main flow passage switch B in side is disconnected, in isolation switching switch T1
Moving contact T13 is contacted with static contact T12 and departed from static contact T11；Isolate the moving contact T23 and static contact in switching switch T2
T22 is contacted and separated with static contact T21；Point vacuum bubbles V11, V12 in double-fracture vacuum bubbles V10 are in conducting state, double
Point vacuum bubbles V21, V22 in break vacuum bubble V20 are in off-state, and the electric current of transformer N+1 tap side taps passes through
Point vacuum bubbles V11, V12 in transition resistance R1, double-fracture vacuum bubbles V10 flow to neutral point 0；
(6) the main flow passage switch A of N tap side is disconnected, and the N+1 taps main flow passage switch B in side is disconnected, in isolation switching switch T1
Moving contact T13 is contacted with static contact T12 and departed from static contact T11；Isolate the moving contact T23 and static contact in switching switch T2
T22 is contacted and separated with static contact T21；Point vacuum bubbles V11, V12 in double-fracture vacuum bubbles V10 are in conducting state, double
Point vacuum bubbles V21, V22 in break vacuum bubble V20 are in off-state, and the electric current of transformer N+1 tap side taps passes through
Point vacuum bubbles V11, V12 in transition resistance R1, double-fracture vacuum bubbles V10 flow to neutral point 0；
(7) the main flow passage switch A of N tap side is disconnected, and the N+1 taps main flow passage switch B in side is disconnected, in isolation switching switch T1
Moving contact T13 is contacted with static contact T12 and departed from static contact T11；Isolate the moving contact T23 and static contact in switching switch T2
T22 is disengaged, and is switched to and is contacted with static contact T21；Point vacuum bubbles V11, V12 in double-fracture vacuum bubbles V10 are in leading
Logical state, point vacuum bubbles V21, V22 in double-fracture vacuum bubbles V20 are in off-state, transformer N+1 tap side taps
Electric current flows to neutral point O by point vacuum bubbles V11, V12 in transition resistance R1, double-fracture vacuum bubbles V10；
(8) the main flow passage switch A of N tap side is disconnected, and the N+1 taps main flow passage switch B in side is disconnected, in isolation switching switch T1
Moving contact T13 is contacted with static contact T12 and departed from static contact T11；Isolate the moving contact T23 and static contact in switching switch T2
T21 is contacted and departed from static contact T22；Point vacuum bubbles V11, V12 in double-fracture vacuum bubbles V10 are in conducting state, double
Point vacuum bubbles V21, V22 in break vacuum bubble V20 are in off-state, and the electric current of transformer N+1 tap side taps passes through
Point vacuum bubbles V11, V12 in transition resistance R1, double-fracture vacuum bubbles V10 flow to neutral point 0；
(9) the main flow passage switch A of N tap side is disconnected, and the N+1 taps main flow passage switch B in side is closed, in isolation switching switch T1
Moving contact T13 is contacted with static contact T12 and departed from static contact T11；Isolate the moving contact T23 and static contact in switching switch T2
T21 is contacted and departed from static contact T22；Point vacuum bubbles V11, V12 in double-fracture vacuum bubbles V10 are in conducting state, double
Point vacuum bubbles V21, V22 in break vacuum bubble V20 are in conducting state, and the electric current of transformer N+1 tap side taps passes through N
+ 1 tap main flow passage switch B in side flows to neutral point 0；It completes to tap cutting for side tap from the N tap side tap of transformer to N+1
It changes.
Referring to Fig. 3, divide the static side V11b of vacuum bubbles V11, V21 and double-fracture vacuum bubbles V10 in double-fracture vacuum bubbles V10
In the static side V21b of point vacuum bubbles V12 be connected as a single entity, the moved end for dividing vacuum bubbles V11, V21 in double-fracture vacuum bubbles V10
The moved end V21a for dividing vacuum bubbles V12 in V11a and double-fracture vacuum bubbles V10 is coaxially disposed.
Referring to Fig. 4, divide the static side V11b of vacuum bubbles V11, V21 and double-fracture vacuum bubbles V10 in double-fracture vacuum bubbles V10
In the static side V21b of point vacuum bubbles V12 be connected as a single entity, the moved end for dividing vacuum bubbles V11, V21 in double-fracture vacuum bubbles V10
The moved end V21a of V11a and point vacuum bubbles V12 in double-fracture vacuum bubbles V10 are arranged in parallel.
Claims (3)
1. a kind of switch with double-isolation of vacuum on-load operation switch, double-fracture vacuum bubbles switching circuit, which is characterized in that including three
Phase switch with double-isolation, double-fracture vacuum bubbles switching circuit and driving mechanism, wherein being cut per phase switch with double-isolation, double-fracture vacuum bubbles
Changing circuit includes the main flow passage switch of N tap side, the main flow passage switch in N+1 tap sides, First Transition resistance, the second transition resistance, the
One isolation switching switch, the second isolation switching switch, the first double-fracture vacuum bubbles, the second double-fracture vacuum bubbles；The N tap side
One end of main flow passage switch is electrically connected with transformer N tap tap, the other end and neutral point of the main flow passage switch of N tap side
Electrical connection；One end of the N+1 taps main flow passage switch in side is electrically connected with the transformer N+1 shunting taps, the N+1 taps
The other end of the main flow passage switch in side is electrically connected with neutral point；The first isolation switching switch, the second isolation switching switch have
There are the first static contact, the second static contact and a moving contact, moving contact is cut between the first static contact and the second static contact
It changes；First static contact of the first isolation switching switch is electrically connected with the transformer N tap tap, and the first isolation switching is opened
The second static contact closed is electrically connected by First Transition resistance with the transformer N+1 shunting taps；The second isolation switching
First static contact of switch is electrically connected with the transformer N+1 shunting taps, and the second static contact of the second isolation switching switch leads to
The second transition resistance is crossed to be electrically connected with the transformer N tap tap；First point of vacuum bubbles in first double-fracture vacuum bubbles
The static side of static side and second point of vacuum bubbles in the first double-fracture vacuum bubbles is connected as a single entity, and first in the first double-fracture vacuum bubbles
The moved end of vacuum bubbles and the described first moving contact isolated in switching switch is divided to be electrically connected, second in the first double-fracture vacuum bubbles
The moved end of vacuum bubbles is divided to be electrically connected with neutral point；The static side of first point of vacuum bubbles in second double-fracture vacuum bubbles and the second double break
The static side of second point of vacuum bubbles in mouth vacuum bubbles is connected as a single entity, the moved end of first point of vacuum bubbles in the second double-fracture vacuum bubbles
The moving contact isolated with described second in switching switch is electrically connected, the moved end of second point of vacuum bubbles in the second double-fracture vacuum bubbles
It is electrically connected with neutral point；The driving mechanism drive simultaneously at the first time first point in the first double-fracture vacuum bubbles it is true
The moved end of vacuole and the moved end of second point of vacuum bubbles act simultaneously, make first point of vacuum bubbles in the first double-fracture vacuum bubbles
It cuts off and turns on simultaneously with second point of vacuum bubbles；The driving mechanism drives the second double-fracture vacuum in the second time simultaneously
The moved end of first point of vacuum bubbles and the moved end of second point of vacuum bubbles in bubble act simultaneously, make in the second double-fracture vacuum bubbles
First point of vacuum bubbles and second point of vacuum bubbles are cut off simultaneously and conducting；The driving mechanism also drives the first isolation switching
Switch between the first static contact and the second static contact of the moving contact in the described first isolation switching switch in switch, the drive
Motivation structure also drives first stationary contact of the moving contact in the described second isolation switching switch in the second isolation switching switch
Switch between head and the second static contact.
2. a kind of switch with double-isolation of vacuum on-load operation switch, double-fracture vacuum bubbles switching circuit as described in claim 1,
It is characterized in that, the vacuum on-load operation switch taps the program of side tap from the N tap side tap changing of transformer to N+1
It is as follows：
(1) the main flow passage switch of N tap side is closed, and the main flow passage switch in N+1 taps side disconnects, and moving in the first isolation switching switch is touched
Head is contacted with the first static contact in the first isolation switching switch and separated with the second static contact in the first isolation switching switch；
Moving contact in second isolation switching switch contacts with the second static contact in the second isolation switching switch and isolates with second and cut
Change the first static contact separation in switch；First point of vacuum bubbles, second point of vacuum bubbles in first double-fracture vacuum bubbles are in
Conducting state, first point of vacuum bubbles, second point of vacuum bubbles in the second double-fracture vacuum bubbles are also in conducting state, transformer
The electric current of N tap side tap flows to neutral point by the main flow passage switch of N tap side；
(2) the main flow passage switch of N tap side disconnects, and the main flow passage switch in N+1 taps side disconnects, and moving in the first isolation switching switch is touched
Head is contacted with the first static contact in the first isolation switching switch and separated with the second static contact in the first isolation switching switch；
Moving contact in second isolation switching switch contacts with the second static contact in the second isolation switching switch and isolates with second and cut
Change the first static contact separation in switch；First point of vacuum bubbles, second point of vacuum bubbles in first double-fracture vacuum bubbles are in
Conducting state, first point of vacuum bubbles, second point of vacuum bubbles in the second double-fracture vacuum bubbles are also in conducting state, transformer
The electric current of N tap side tap flows to neutral point by first point of vacuum bubbles, the second point of vacuum bubbles in the first double-fracture vacuum bubbles；
(3) the main flow passage switch of N tap side disconnects, and the main flow passage switch in N+1 taps side disconnects, and moving in the first isolation switching switch is touched
Head is contacted with the first static contact in the first isolation switching switch and separated with the second static contact in the first isolation switching switch；
Moving contact in second isolation switching switch contacts with the second static contact in the second isolation switching switch and isolates with second and cut
Change the first static contact separation in switch；First point of vacuum bubbles, second point of vacuum bubbles in first double-fracture vacuum bubbles are in
Off-state, first point of vacuum bubbles, second point of vacuum bubbles in the second double-fracture vacuum bubbles are also in conducting state, transformer
The electric current of N tap side tap passes through first point of vacuum bubbles, the second point of vacuum in the second transition resistance, the second double-fracture vacuum bubbles
Bubble flows to neutral point；
(4) the main flow passage switch of N tap side disconnects, and the main flow passage switch in N+1 taps side disconnects, and moving in the first isolation switching switch is touched
The first static contact that head is isolated with first in switching switch departs from, and is switched to the second static contact isolated with first in switching switch
Contact；Second isolation switching switch in moving contact with second isolate switching switch in the second static contact contact and with second every
From the first static contact separation in switching switch；First point of vacuum bubbles, second point of vacuum bubbles in first double-fracture vacuum bubbles are equal
It is off, the first point of vacuum bubbles, second point of vacuum bubbles in the second double-fracture vacuum bubbles are also in conducting state, become
The electric current of depressor N tap side tap by first point of vacuum bubbles in the second transition resistance, the second double-fracture vacuum bubbles, second point
Vacuum bubbles flow to neutral point；
(5) the main flow passage switch of N tap side disconnects, and the main flow passage switch in N+1 taps side disconnects, and moving in the first isolation switching switch is touched
Head departs from the first static contact that the second static contact in the first isolation switching switch is contacted and isolated with first in switching switch；
Moving contact in second isolation switching switch contacts with the second static contact in the second isolation switching switch and isolates with second and cut
Change the first static contact separation in switch；First point of vacuum bubbles, second point of vacuum bubbles in first double-fracture vacuum bubbles are in
Conducting state, first point of vacuum bubbles, second point of vacuum bubbles in the second double-fracture vacuum bubbles are also in conducting state, transformer
The electric current of N tap side tap passes through first point of vacuum bubbles, the second point of vacuum in the second transition resistance, the second double-fracture vacuum bubbles
Bubble flows to neutral point, and the electric currents of transformer N+1 tap side taps passes through the in First Transition resistance, the first double-fracture vacuum bubbles
One point of vacuum bubbles, second point of vacuum bubbles flow to neutral point；
(5) the main flow passage switch of N tap side disconnects, and the main flow passage switch in N+1 taps side disconnects, and moving in the first isolation switching switch is touched
Head departs from the first static contact that the second static contact in the first isolation switching switch is contacted and isolated with first in switching switch；
Moving contact in second isolation switching switch contacts with the second static contact in the second isolation switching switch and isolates with second and cut
Change the first static contact separation in switch；First point of vacuum bubbles, second point of vacuum bubbles in first double-fracture vacuum bubbles are in
Conducting state, first point of vacuum bubbles, second point of vacuum bubbles in the second double-fracture vacuum bubbles are also in off-state, transformer
The electric current of N+1 tap side taps by first point of vacuum bubbles in First Transition resistance, the first double-fracture vacuum bubbles, second point it is true
Vacuole flows to neutral point；
(6) the main flow passage switch of N tap side disconnects, and the main flow passage switch in N+1 taps side disconnects, and moving in the first isolation switching switch is touched
Head departs from the first static contact that the second static contact in the first isolation switching switch is contacted and isolated with first in switching switch；
Moving contact in second isolation switching switch contacts with the second static contact in the second isolation switching switch and isolates with second and cut
Change the first static contact separation in switch；First point of vacuum bubbles, second point of vacuum bubbles in first double-fracture vacuum bubbles are in
Conducting state, first point of vacuum bubbles, second point of vacuum bubbles in the second double-fracture vacuum bubbles are also in off-state, transformer
The electric current of N+1 tap side taps by first point of vacuum bubbles in First Transition resistance, the first double-fracture vacuum bubbles, second point it is true
Vacuole flows to neutral point；
(7) the main flow passage switch of N tap side disconnects, and the main flow passage switch in N+1 taps side disconnects, and moving in the first isolation switching switch is touched
Head departs from the first static contact that the second static contact in the first isolation switching switch is contacted and isolated with first in switching switch；
Moving contact in second isolation switching switch is disengaged with the second static contact that second isolates in switching switch, is switched to and the
The first static contact contact in two isolation switching switches；First point of vacuum bubbles, second point of vacuum in first double-fracture vacuum bubbles
It steeps and is in conducting state, the first point of vacuum bubbles, second point of vacuum bubbles in the second double-fracture vacuum bubbles are also in disconnecting shape
State, the electric current of transformer N+1 tap side taps pass through first point of vacuum in First Transition resistance, the first double-fracture vacuum bubbles
Bubble, second point of vacuum bubbles flow to neutral point；
(8) the main flow passage switch of N tap side disconnects, and the main flow passage switch in N+1 taps side disconnects, and moving in the first isolation switching switch is touched
Head departs from the first static contact that the second static contact in the first isolation switching switch is contacted and isolated with first in switching switch；
Moving contact in second isolation switching switch contacts with the first static contact in the second isolation switching switch and isolates with second and cut
The second static contact changed in switch departs from；First point of vacuum bubbles, second point of vacuum bubbles in first double-fracture vacuum bubbles are in
Conducting state, first point of vacuum bubbles, second point of vacuum bubbles in the second double-fracture vacuum bubbles are also in off-state, transformer
The electric current of N+1 tap side taps by first point of vacuum bubbles in First Transition resistance, the first double-fracture vacuum bubbles, second point it is true
Vacuole flows to neutral point；
(9) the main flow passage switch of N tap side disconnects, and the main flow passage switch in N+1 taps side is closed, and moving in the first isolation switching switch is touched
Head departs from the first static contact that the second static contact in the first isolation switching switch is contacted and isolated with first in switching switch；
Moving contact in second isolation switching switch contacts with the first static contact in the second isolation switching switch and isolates with second and cut
The second static contact changed in switch departs from；First point of vacuum bubbles, second point of vacuum bubbles in first double-fracture vacuum bubbles are in
Conducting state, first point of vacuum bubbles, second point of vacuum bubbles in the second double-fracture vacuum bubbles are also in conducting state, transformer
The electric current of N+1 tap side taps taps the main flow passage switch in side by N+1 and flows to neutral point；It completes to take out from the N tap side of transformer
Head taps the switching of side tap to N+1.
3. a kind of switch with double-isolation of vacuum on-load operation switch as claimed in claim 1 or 2, double-fracture vacuum bubbles switching electricity
Road, which is characterized in that in the moved end of first point of vacuum bubbles in the first double-fracture vacuum bubbles and the first double-fracture vacuum bubbles
Second point of vacuum bubbles moved end coaxial arrangement or be arranged in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720893099.1U CN207458782U (en) | 2017-07-21 | 2017-07-21 | A kind of switch with double-isolation of vacuum on-load operation switch, double-fracture vacuum bubbles switching circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720893099.1U CN207458782U (en) | 2017-07-21 | 2017-07-21 | A kind of switch with double-isolation of vacuum on-load operation switch, double-fracture vacuum bubbles switching circuit |
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|---|---|
| CN207458782U true CN207458782U (en) | 2018-06-05 |
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| CN201720893099.1U Active CN207458782U (en) | 2017-07-21 | 2017-07-21 | A kind of switch with double-isolation of vacuum on-load operation switch, double-fracture vacuum bubbles switching circuit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN111899999A (en) * | 2020-06-29 | 2020-11-06 | 南方电网科学研究院有限责任公司 | Power electronic tap changer and distribution transformer |
-
2017
- 2017-07-21 CN CN201720893099.1U patent/CN207458782U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN111899999A (en) * | 2020-06-29 | 2020-11-06 | 南方电网科学研究院有限责任公司 | Power electronic tap changer and distribution transformer |
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