CN106024492B - A kind of double-bus isolator operation locking electric loop - Google Patents
A kind of double-bus isolator operation locking electric loop Download PDFInfo
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- CN106024492B CN106024492B CN201610556101.6A CN201610556101A CN106024492B CN 106024492 B CN106024492 B CN 106024492B CN 201610556101 A CN201610556101 A CN 201610556101A CN 106024492 B CN106024492 B CN 106024492B
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- isolating switch
- bus isolating
- bus
- auxiliary
- electromagnetic lock
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/02—Details
- H01H31/04—Interlocking mechanisms
- H01H31/10—Interlocking mechanisms for interlocking two or more switches
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Abstract
The present invention relates to a kind of double-bus isolator operations to be latched electric loop, including DC power supply, I bus isolating switch auxiliary circuit in parallel and II bus isolating switch auxiliary circuit and breaker assist normally closed contact；I bus isolating switch auxiliary circuits include concatenated I bus isolating switch electromagnetic lock button switch, I bus isolating switch electromagnetic lock coils and II bus isolating switch auxiliary normally closed contact；II bus isolating switch auxiliary circuits include concatenated II bus isolating switch electromagnetic lock button switch, II bus isolating switch electromagnetic lock coils and I bus isolating switch auxiliary normally closed contact.Using the circuit, breaker is dividing position, and after I bus isolating switch closing operations, II bus isolating switch cannot carry out closing operation；After breaker disconnects, I is female or mother's II disconnecting switch could close a floodgate or opening operation, and then avoids on-load disconnection disconnecting switch or misoperation fault when one section of busbar closes a floodgate or disconnects to another section of busbar on-load.
Description
Technical field
The present invention relates to isolator operation applied technical fields more particularly to a kind of double-bus isolator operation to be latched
Electric loop.
Background technology
With the raising of power supply safety reliability requirement, in relatively large substation, electric system high-tension switch cabinet is general
All configuration double-bus power supplies.According to produce load and network system operating condition, carries out busbar frequently by disconnecting switch and stop sending
The adjustment of electric grid switching operation and bus running manner of powering.
Referring to Fig. 1, circuit and bus contact are fed out for a kind of typical double-bus disconnecting switch is corresponding in the prior art
Primary system circuit diagram, the system include feeding out the double-bus disconnecting switch grid switching operation circuit of circuit, the I busbares in the circuit
One end of disconnecting switch QS1, II bus isolating switch QS2 is connect with I busbares, II busbares respectively, above-mentioned two disconnecting switch
It after the other end is connected in parallel, then connect with one end of circuit breaker Q F, the other end of circuit breaker Q F connects disconnecting switch QS3, this is
System further includes the bus contact circuit of I busbares, II busbares, I busbares mother disconnecting switch QS1-1, mother open circuit in the circuit
Device QF-1, II busbar mother disconnecting switch QS2-1 is sequentially connected in series.
Due to foregoing circuit design feature, in double-bus isolator operation, it often will appear on-load wrong diagnosis and open isolation
Switch, or accidentally separated by another section of bus load false switching power transmission of one section of bus belt and on-load by disconnecting switch and left
Close the operating accidents such as arcing short circuit.So the prior art, provides the blocking device of disconnecting switch, is broadly divided into electric interlock
And mechanical chain, the wherein principle of disconnecting switch electric blocking, exactly connect using the auxiliary of the equipment such as breaker, disconnecting switch
Point, the conditional connection in secondary electrical control circuit form the logical relation of "AND" and "or", control connecing for electric power loop
Through and off are opened, to achieve the purpose that control primary equipment.But existing blocking device design function is incomplete, double-bus
Disconnecting switch misoperation fault can still occur often.
Invention content
To overcome the problems in correlation technique, a kind of double-bus isolator operation locking of present invention offer is electrical returns
Road.
The double-bus isolator operation of the embodiment of the present invention is latched electric loop, including DC power supply, breaker auxiliary
Normally closed contact, I bus isolating switch auxiliary circuit in parallel and II bus isolating switch auxiliary circuits, wherein：
The anode of one end of the I bus isolating switch auxiliary circuit and the DC power supply connect, the other end with it is described
Breaker assists one end connection of normally closed contact, the other end of the breaker auxiliary normally closed contact and bearing for the DC power supply
Pole connects；
The anode of one end of the II bus isolating switch auxiliary circuit and the DC power supply connect, the other end with it is described
One end connection of the I bus isolating switch auxiliary circuit is connected in breaker auxiliary normally closed contact；
The I bus isolating switch auxiliary circuit includes that concatenated I bus isolating switch electromagnetic lock and II busbares are kept apart
Close auxiliary normally closed contact, the I bus isolating switch electromagnetic lock include concatenated I bus isolating switch electromagnetic lock button switch and
I bus isolating switch electromagnetic lock coils；
The II bus isolating switch auxiliary circuit includes that concatenated II bus isolating switch electromagnetic lock and I busbares are kept apart
Auxiliary normally closed contact is closed, the II bus isolating switch electromagnetic lock includes concatenated II bus isolating switch electromagnetic lock button switch
With II bus isolating switch electromagnetic lock coils.
Optionally, the anode of one end of the I bus isolating switch electromagnetic lock and the DC power supply connect, the other end and
One end connection of the II bus isolating switch auxiliary normally closed contact, the II bus isolating switch assist the another of normally closed contact
It holds and assists one end of normally closed contact to connect with the breaker.
Optionally, the anode of one end of the II bus isolating switch electromagnetic lock and the DC power supply connect, the other end
One end of normally closed contact is assisted to connect with the I bus isolating switch, the I bus isolating switch assists the another of normally closed contact
It holds and assists one end of normally closed contact to connect with the breaker.
Optionally, the electric loop further includes I bus isolating switch auxiliary normal opened contact, II bus isolating switch auxiliary
Auxiliary circuit is isolated in normal opened contact and mother, wherein：
One end of the I bus isolating switch auxiliary normal opened contact is assisted with the I bus isolating switch in normally closed contact
Connect the II bus isolating switch electromagnetic lock one end connection, the other end be isolated with the mother auxiliary circuit one end company
It connects, the other end of the mother isolation auxiliary circuit is connect with the cathode of the DC power supply；
One end of the II bus isolating switch auxiliary normal opened contact assists normally closed contact with the II bus isolating switch
One end connection of the middle connection I bus isolating switch electromagnetic lock, the other end, which are isolated with the mother in auxiliary circuit, connects I mothers
Line disconnecting switch assists one end connection of normal opened contact；
The mother isolation auxiliary circuit includes that concatenated I mothers disconnecting switch assists normal opened contact, II mothers to keep apart
It closes auxiliary normal opened contact and busbar breaker assists normal opened contact.
Optionally, the electric loop further include be connected on I or II bus isolating switch auxiliary normal opened contact and mother every
From the public locking busbar between auxiliary circuit, wherein：
One end of the common bus assists normal opened contact and the II busbares to be isolated with the I bus isolating switch respectively
Auxiliary circuit connection is isolated with the mother for the connection of switch auxiliary normal opened contact, the other end.
Optionally, the supply voltage of the DC power supply is 220V.
Optionally, electromagnetic lock pin is equipped in the I bus isolating switch electromagnetic lock, the electromagnetic lock pin is isolated with I busbares
The operation handle of switch connects.
Optionally, be equipped with electromagnetic lock pin in the II bus isolating switch electromagnetic lock, the electromagnetic lock pin and II busbares every
Leave the operation handle connection of pass.
The double-bus isolator operation of the embodiment of the present invention is latched electric loop, when breaker divides position, double bus isolation
It leaves the conversion operation of falling busbar closed under non-cyclization state and presses I busbares before carrying out closing operation to I bus isolating switch
I bus isolating switch electromagnetic lock button switches on disconnecting switch electromagnetic lock, I bus isolating switch electromagnetic lock coils obtain electric, I mothers
Line disconnecting switch electromagnetic lock unlocking, can carry out the closing operation of I bus isolating switch, I bus isolating switch closing operation at
After work(, I bus isolating switch auxiliary normally closed contact simultaneously switches off, and has cut off the corresponding auxiliary circuit of II bus isolating switch,
So the disconnecting switch of II busbares does not just allow to carry out closing operation, and it can only be after the disconnection of I bus isolating switch, it could be to II mothers
Line disconnecting switch carries out closing operation.And then two sections of busbares of I, II section are ensured under non-cyclization state, such as I bus isolating switch
When in "on" position, then to II bus isolating switch closing operations, kept apart by II busbares by I sections of busbares caused by possible
It closes and on-load false switching power transmission operating accident is carried out to II busbares, and after the completion of II bus isolating switch false switchings operate, then
Secondary on-load accidentally divides the generation that the operation of I bus isolating switch causes short circuit accident.Likewise, being also possible to prevent to be led to by II sections of busbares
I bus isolating switch is crossed to I busbares progress on-load false switching power transmission operating accident and when disconnecting II bus isolating switch, again
On-load accidentally divides the generation of II bus isolating switch operation short circuit accident.Simultaneously as also being set in circuit in the embodiment of the present invention
When thering is breaker to assist normally closed contact, therefore operation turned off to any single bus isolating switch, it is necessary to be that breaker exists
It can be carried out when point position, avoid the generation that on-load accidentally draws the accident of disconnecting switch.
Description of the drawings
The drawings herein are incorporated into the specification and forms part of this specification, and shows the implementation for meeting the present invention
Example, and be used to explain the principle of the present invention together with specification.
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, for those of ordinary skill in the art
Speech, without having to pay creative labor, other drawings may also be obtained based on these drawings.
Fig. 1, which is that a kind of typical double-bus disconnecting switch is corresponding in the prior art, feeds out circuit and bus contact is once
System circuit diagram；
Fig. 2 is that a kind of double-bus isolator operation provided in an embodiment of the present invention is latched electric loop；
Fig. 3 is that a kind of double-bus isolator operation provided in an embodiment of the present invention is latched electric loop.
Specific implementation mode
Example embodiments are described in detail here, and the example is illustrated in the accompanying drawings.Following description is related to
When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Following exemplary embodiment
Described in embodiment do not represent and the consistent all embodiments of the present invention.On the contrary, they be only with it is such as appended
The example of the consistent device and method of some aspects being described in detail in claims, of the invention.
An embodiment of the present invention provides a kind of double-bus isolator operations to be latched electric loop, which is arranged secondary
Side, with realize double bus isolation is left close lock and opening operation when, safe and reliable operation prevents the hair of misoperation fault
It is raw.
Referring to Fig. 2, for a kind of double-bus isolator operation locking electric loop provided in an embodiment of the present invention, the circuit
Including DC power supply KM, breaker auxiliary normally closed contact QF1, in parallel I bus isolating switch auxiliary circuit and the isolation of II busbares
Switch auxiliary circuit.
The I bus isolating switch auxiliary circuit includes concatenated I bus isolating switch electromagnetic lock YS11With II busbares every
Leave pass auxiliary normally closed contact QS21, the I bus isolating switch electromagnetic lock YS11Including concatenated I bus isolating switch electromagnetism
Lock button switch SB11With I bus isolating switch electromagnetic lock coils DS11。
The II bus isolating switch auxiliary circuit includes concatenated II bus isolating switch electromagnetic lock YS21With I busbares every
Leave pass auxiliary normally closed contact QS11, the II bus isolating switch electromagnetic lock YS21Including concatenated II bus isolating switch electricity
Magnetic padlock button switch SB21With II bus isolating switch electromagnetic lock coils DS21。
In the present embodiment, I bus isolating switch electromagnetic lock button switch SB11One end and DC power supply KM anode
Connection, the other end and I bus isolating switch electromagnetic lock coils DS11One end connection, I bus isolating switch electromagnetic lock coils DS11
The other end and II bus isolating switch auxiliary normally closed contact QS21One end connection, II bus isolating switch assist normally closed contact
QS21The other end and breaker auxiliary normally closed contact QF1One end connection, breaker assists normally closed contact QF1The other end with
The cathode of DC power supply KM connects；Meanwhile II bus isolating switch electromagnetic lock button switches SB21One end keep apart with I busbares
Powered-down magnetic padlock button switch SB11One end connection, the other end and the II bus isolating switch electricity of the anode of middle connection DC power supply KM
Magnetic padlock coil DS21One end connection, II bus isolating switch electromagnetic lock coils DS21The other end and I bus isolating switch assist
Normally closed contact QS11One end connection, I bus isolating switch assists normally closed contact QS11The other end and breaker auxiliary normally closed connect
Point QF1Middle connection II bus isolating switch auxiliary normally closed contact QS21One end connection.
Further, I bus isolating switch electromagnetic lock YS11In be equipped with electromagnetic lock pin, the I of electromagnetic lock pin and primary side
The operation handle of bus isolating switch connects, for lockking I bus isolating switch；Likewise, II bus isolating switch electromagnetic locks
YS21In be equipped with electromagnetic lock pin, the operation handle of the II bus isolating switch of electromagnetic lock pin and primary side connects, for lockking
II bus isolating switch.
Certainly, it is not limited in II (I) bus isolating switch electromagnetic locks and I (II) bus isolating switch auxiliary normally closed contact
Above-mentioned position relationship can also be exchanged as needed.The supply voltage of DC power supply KM is 220V, but is not limited to described
Numerical value.
Circuit provided in this embodiment is breaker at point position, and double-bus disconnecting switch falls mother under non-cyclization state
Corresponding electric blocking circuit when line handover operation.
The above circuit corresponds to the breaker of primary side in a point position, and I (II) mothers disconnecting switch disconnects position, corresponding open circuit
Device assists normally closed contact QF1Position is being closed, I bus isolating switch electromagnetic locks YS1 is pressed1In I bus isolating switch electromagnetic lock buttons
Switch SB11, I bus isolating switch electromagnetic lock coils DS11To electric, at this point, extracting I bus isolating switch electromagnetic locks YS11In
Electromagnetic lock pin, electromagnetic lock unlock, I bus isolating switch can carry out closing operation, but when I bus isolating switch close a floodgate at
After work(, I bus isolating switch assists normally closed contact QS11It simultaneously switches off, has cut off the corresponding II busbares of II bus isolating switch
Disconnecting switch auxiliary circuit, so II bus isolating switch electromagnetic locks YS21It cannot unlock, and then make II bus isolating switch will
It cannot carry out closing operation.Finally, it is ensured that two sections of busbares of I, II are in non-cyclization, after I bus isolating switch closes a floodgate, then to II
Bus isolating switch closing operation caused may carry out on-load by II bus isolating switch by I sections of busbares to II busbares
False switching power transmission operating accident.Even, it also avoids after the completion of II bus isolating switch false switchings operate, on-load misses again
The generation for dividing the operation of I bus isolating switch to cause short circuit accident.
Likewise, using above-mentioned circuit, II bus isolating switch electromagnetic locks YS2 is pressed1In II bus isolating switch electricity
Magnetic padlock button switch SB21, II bus isolating switch electromagnetic lock coils DS21It incites somebody to action electric, extracts II bus isolating switch electromagnetic locks
YS21In electromagnetic lock pin, electromagnetic lock unlock, II bus isolating switch can carry out closing operation, but when II busbares are kept apart
After closing closing success, II bus isolating switch assists normally closed contact QS21It simultaneously switches off, it is corresponding to have cut off I bus isolating switch
I bus isolating switch auxiliary circuits, so I bus isolating switch electromagnetic locks YS11It cannot unlock, and then I busbares is made to keep apart
Pass cannot carry out closing operation.Finally, it is ensured that two sections of busbares of I, II are in non-cyclization, after II bus isolating switch closes a floodgate,
Again to I bus isolating switch closing operations, caused band may be carried out to I busbares by I bus isolating switch by II sections of busbares
When load false switching power transmission operating accident and disconnection II bus isolating switch, on-load accidentally divides II bus isolating switch to operate again
The generation of short circuit accident.
Further, when above two bus isolating switch turns off operation, only breaker can be carried out at point position,
After closing a floodgate for I (II) bus isolating switch, in the operation for carrying out its disconnecting switch disconnection, avoids on-load wrong diagnosis and open isolation
The generation of the accident of switch.
It is closed for another double-bus isolator operation provided in an embodiment of the present invention referring to Fig. 3 in conjunction with above-described embodiment
Electric loop is locked, for breaker when closing position, double bus isolation leaves when putting the capable handover operation of falling busbar into, safe and reliable behaviour
Make, prevents the generation of misoperation fault.
Difference lies in the electric loop further includes that I bus isolating switch auxiliary is normally opened to the present embodiment with a upper implementation
Contact QS12, II bus isolating switch auxiliary normal opened contact QS22, mother isolation auxiliary circuit and public locking busbar GBM,
In, mother isolation auxiliary circuit includes concatenated I mothers disconnecting switch auxiliary normal opened contact QS1-11, II mother disconnecting switch it is auxiliary
Help normal opened contact QS2-11With busbar breaker auxiliary normal opened contact QF-11。
In the present embodiment, I bus isolating switch auxiliary normal opened contact QS12One end and I bus isolating switch auxiliary it is normal
Close contact QS11Middle connection II bus isolating switch electromagnetic locks YS21One end connection, the other end and public locking busbar GBM one
End connection, the other end connection I mother disconnecting switch auxiliary normal opened contact QS1-1 of public locking busbar GBM1One end, I mothers
Disconnecting switch assists normal opened contact QS1-11Other end connection II mother disconnecting switch auxiliary normal opened contact QS2-11One end,
II mother disconnecting switch assists normal opened contact QS2-11Other end connection busbar breaker auxiliary normal opened contact QF-11One end,
Busbar breaker assists normal opened contact QF-11The other end connection DC power supply cathode；
Meanwhile II bus isolating switch auxiliary normal opened contact QS22One end and II bus isolating switch assist normally closed contact
QS21Middle connection I bus isolating switch electromagnetic locks YS11One end connection, connect I busbares in the other end and public locking busbar GBM
Disconnecting switch assists normal opened contact QS12One end connection.
It should be noted that I mother disconnecting switch auxiliary normal opened contact QS1-1 in auxiliary circuit is isolated in mother1, II it is female
Join disconnecting switch auxiliary normal opened contact QS2-11With busbar breaker auxiliary normal opened contact QF-11Position relationship be not limited to this
The mode that embodiment provides.
In electric switching operation, busbar is more typical large-scale grid switching operation, and it is more to be related to spacing devices, to ensure
It is safe operation, unimpeded, it is desirable that relevant primary equipment, operation circuit have very high reliability, therefore be arranged in the present embodiment
Public locking busbar GBM operates occurrence probability to reduce the unlock of falling busbar.
Circuit provided in this embodiment is breaker when closing position, and double bus isolation, which leaves, puts the row cyclization switching of falling busbar into
Electric blocking circuit when operation operation.
Circuit breaker Q F is closing position, and the cyclization handover operation of falling busbar is carried out to two sections of bus isolating switch of I, II.Before operation, one
I busbar mothers disconnecting switch, busbar breaker and the II busbar mothers disconnecting switch of secondary side should all close position, corresponding I mothers
Disconnecting switch assists normal opened contact QS1-11Busbar breaker assists normal opened contact QF-11It is assisted with II mother disconnecting switch normally opened
Contact QS2-11It is closed, the cathode of DC power supply has been connected for public locking busbar GBM.
If I bus isolating switch is closing position, I mother disconnecting switch auxiliary normal opened contact QS1 corresponding thereto2It closes
It closes, presses II bus isolating switch electromagnetic lock button switches SB21, then the corresponding electromagnetic lock of II bus isolating switch has been connected
Circuit, II bus isolating switch electromagnetic lock coils DS21It is electric, extract its electromagnetic lock pin, after electromagnetic lock unlock, II busbares every
Closing operation can be carried out by leaving pass, and then I, two sections of bus isolating switch can carry out Loop Closing Operation, two sections of busbar cyclizations of I, II
After success, then I bus isolating switch is disconnected, then powered by II bus isolating switch, realized on-load and carry out disconnecting switch
The handover operation of falling busbar, it is therefore prevented that in two sections of busbar Loop Closing Operations that voltage differs, lead to the other accidents such as short circuit
Generation.
Likewise, if II bus isolating switch is closing position, II mother disconnecting switch corresponding thereto assists normally opened connect
Point QS22It is closed, presses I bus isolating switch electromagnetic lock button switches SB11, then the corresponding electricity of I bus isolating switch has been connected
Magnetic padlock circuit, I bus isolating switch electromagnetic lock coils DS11, its electromagnetic lock pin is extracted, after electromagnetic lock unlock, the isolation of I busbares
Switch can carry out closing operation, and then two sections of bus isolating switch of I, II can carry out Loop Closing Operation, and it is negative equally to also achieve band
Lotus carries out the handover operation of falling busbar of disconnecting switch, it is therefore prevented that in two sections of busbar Loop Closing Operations that voltage differs, leads
Cause the generation of the other accidents such as short circuit.
By above technical scheme as it can be seen that double-bus isolator operation provided in this embodiment is latched electric loop, no matter
It is breaker at point position, to the combined floodgate power transmission of two sections of bus isolating switch of I, II, disconnects power failure operation or breaker is closing
When position, the cyclization handover operation of falling busbar is carried out to two sections of bus isolating switch of I, II, can be transferred through on isolator operating mechanism
The electromagnetic lock of installation and its electric blocking circuit, realize safe and reliable operation, prevent the generation of misoperation fault.
Those skilled in the art will readily occur to its of the present invention after considering specification and putting into practice the invention invented here
Its embodiment.This application is intended to cover the present invention any variations, uses, or adaptations, these modifications, purposes or
Person's adaptive change follows the general principle of the present invention and includes the common knowledge in the art that the present invention does not invent
Or conventional techniques.The description and examples are only to be considered as illustrative, and true scope and spirit of the invention are by following
Claim is pointed out.
It should be understood that the invention is not limited in the precision architectures for being described above and being shown in the accompanying drawings, and
And various modifications and changes may be made without departing from the scope thereof.The scope of the present invention is limited only by the attached claims.
Claims (6)
1. a kind of double-bus isolator operation is latched electric loop, which is characterized in that normal including DC power supply, breaker auxiliary
Contact, I bus isolating switch auxiliary circuit in parallel and II bus isolating switch auxiliary circuits are closed, wherein：
The anode of one end of the I bus isolating switch auxiliary circuit and the DC power supply connect, the other end and the open circuit
Device assists one end connection of normally closed contact, the cathode of the other end and the DC power supply of the breaker auxiliary normally closed contact to connect
It connects；
The anode of one end of the II bus isolating switch auxiliary circuit and the DC power supply connect, the other end and the open circuit
One end connection of the I bus isolating switch auxiliary circuit is connected in device auxiliary normally closed contact；
The I bus isolating switch auxiliary circuit includes that concatenated I bus isolating switch electromagnetic lock and II bus isolating switch are auxiliary
It includes concatenated I bus isolating switch electromagnetic lock button switch and I female to help normally closed contact, the I bus isolating switch electromagnetic lock
Line disconnecting switch electromagnetic lock coil；
The II bus isolating switch auxiliary circuit includes that concatenated II bus isolating switch electromagnetic lock and I bus isolating switch are auxiliary
It includes concatenated II bus isolating switch electromagnetic lock button switch and II to help normally closed contact, the II bus isolating switch electromagnetic lock
Bus isolating switch electromagnetic lock coil；
It is equipped with electromagnetic lock pin, the electromagnetic lock pin in the I bus isolating switch electromagnetic lock, II bus isolating switch electromagnetic locks
It is connect respectively with the operation handle of the I bus isolating switch of primary side, the operation handle of II bus isolating switch, is respectively used to lock
Firmly I bus isolating switch, II bus isolating switch.
2. double-bus isolator operation according to claim 1 is latched electric loop, which is characterized in that the I busbares
One end of disconnecting switch electromagnetic lock is connect with the anode of the DC power supply, the other end and II bus isolating switch auxiliary are normal
One end connection of contact is closed, the other end of the II bus isolating switch auxiliary normally closed contact assists normally closed connect with the breaker
One end connection of point.
3. double-bus isolator operation according to claim 2 is latched electric loop, which is characterized in that the II busbares
One end of disconnecting switch electromagnetic lock is connect with the anode of the DC power supply, the other end and I bus isolating switch auxiliary are normal
One end connection of contact is closed, the other end of the I bus isolating switch auxiliary normally closed contact assists normally closed connect with the breaker
One end connection of point.
4. double-bus isolator operation according to claim 3 is latched electric loop, which is characterized in that described electrical time
Road further includes I bus isolating switch auxiliary normal opened contact, II bus isolating switch auxiliary normal opened contact and mother isolation auxiliary electricity
Road, wherein：
One end of the I bus isolating switch auxiliary normal opened contact assists connecting in normally closed contact with the I bus isolating switch
One end connection of auxiliary circuit, institute are isolated with the mother for one end connection of the II bus isolating switch electromagnetic lock, the other end
The other end for stating mother isolation auxiliary circuit is connect with the cathode of the DC power supply；
One end of the II bus isolating switch auxiliary normal opened contact assists connecting in normally closed contact with the II bus isolating switch
Connect one end connection of the I bus isolating switch electromagnetic lock, the other end be isolated with the mother in auxiliary circuit connection I busbares every
Leave one end connection for closing auxiliary normal opened contact；
The mother isolation auxiliary circuit includes that concatenated I mothers disconnecting switch assists normal opened contact, II mother disconnecting switch auxiliary
Normal opened contact and busbar breaker is helped to assist normal opened contact.
5. double-bus isolator operation according to claim 4 is latched electric loop, which is characterized in that described electrical time
Road further includes being connected on I bus isolating switch auxiliary normal opened contact or II bus isolating switch auxiliary normal opened contact and mother isolation
Public locking busbar between auxiliary circuit, wherein：
One end of the public locking busbar assists normal opened contact and the II busbares to be isolated with the I bus isolating switch respectively
Auxiliary circuit connection is isolated with the mother for the connection of switch auxiliary normal opened contact, the other end.
6. double-bus isolator operation according to claim 1 is latched electric loop, which is characterized in that the direct current
The supply voltage in source is 220V.
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| CN201610556101.6A CN106024492B (en) | 2016-07-15 | 2016-07-15 | A kind of double-bus isolator operation locking electric loop |
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| CN201610556101.6A CN106024492B (en) | 2016-07-15 | 2016-07-15 | A kind of double-bus isolator operation locking electric loop |
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| CN106024492B true CN106024492B (en) | 2018-09-28 |
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| CN106712017B (en) * | 2017-03-30 | 2023-06-30 | 山东钢铁股份有限公司 | Double-bus secondary voltage switching circuit and self-holding circuit thereof |
| CN107015487B (en) * | 2017-06-08 | 2023-09-15 | 国网山东省电力公司莱芜供电公司 | Primary simulation system and method for transformer substation capable of reminding load shedding of bus |
| CN107919243B (en) * | 2017-06-15 | 2019-09-20 | 国网浙江省电力公司湖州供电公司 | The improvement structure and control method in a kind of disconnecting switch electric blocking circuit |
| CN107276215B (en) * | 2017-08-03 | 2023-09-05 | 特瓦特能源科技有限公司 | Double-bus power switching protection circuit and equipment |
| CN108574279B (en) * | 2018-06-04 | 2024-01-19 | 河南森源电气股份有限公司 | Double-bus switching misoperation prevention control device and double-bus power supply system |
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| CN205810666U (en) * | 2016-07-15 | 2016-12-14 | 山东钢铁股份有限公司 | A kind of double-bus isolator operation locking electric loop |
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| CN106024492A (en) | 2016-10-12 |
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