CN206179715U - Outer door interlock of circuit breaker protection transformer - Google Patents
Outer door interlock of circuit breaker protection transformer Download PDFInfo
- Publication number
- CN206179715U CN206179715U CN201621265638.9U CN201621265638U CN206179715U CN 206179715 U CN206179715 U CN 206179715U CN 201621265638 U CN201621265638 U CN 201621265638U CN 206179715 U CN206179715 U CN 206179715U
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- Prior art keywords
- switch
- breaker
- transformator
- circuit breaker
- protection
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- 230000004224 protection Effects 0.000 title claims abstract description 28
- 230000007246 mechanism Effects 0.000 claims abstract description 4
- 230000001681 protective effect Effects 0.000 claims description 6
- 238000004804 winding Methods 0.000 claims description 6
- 238000009434 installation Methods 0.000 abstract description 4
- 230000009471 action Effects 0.000 abstract description 2
- 230000005611 electricity Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 101150087322 DCPS gene Proteins 0.000 description 2
- 101100386725 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) DCS1 gene Proteins 0.000 description 2
- 101100116191 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) DCS2 gene Proteins 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 102100033718 m7GpppX diphosphatase Human genes 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
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Abstract
The utility model discloses an outer door interlock of circuit breaker protection transformer, including outer door interlock of switchgear circuit breaker, transformer and circuit breaker DL control protection return circuit, the DL control protection return circuit include divide -shut brake control and transformer outer door open with chain tripping mechanism, at transformer outer door installation travel switch, its normal close point is parallelly connected to be arrived among the separating brake coil control circuit of circuit breaker, controlling little generating line and supplying with circuit breaker DL through automatic switch with DC power supply, when 5, 6 of change over switch KK were closed, the circuit made the switch -on of circuit breaker closing coils HQ through protection device 1n, and circuit breaker DL closes a floodgate, when 7, 8 of change over switch KK are closed, the switch -on of breaker open operation coil TQ, DL separating brake. This device can prevent effectively that operating personnel from going into electrified interval in the electrified mistiming of transformer, as long as the transformer outer door is the open mode, the circuit breaker all can the separating brake, and perfect " five prevent " interlocking function guarantees operating personnel safety, its is with low costs, installation, easy operation, and the device action is sensitive.
Description
Technical field
This utility model is related to the transformator external door interlock device in power industry electric substation, particularly 10kV choppers to be protected
The outer door interlock of shield transformator.
Background technology
At present, increasing customer substation using dry-type transformer by electrical network 10kV voltages be changed into 0.4kV voltages to
Power load is powered, and is the transformator by high and low pressure cabinet and transformer arrangement in an electric substation in the design of electric substation
Independent compartment is not set, and is mounted in a closure with external door, be to ensure operator safety, it is desirable to which protection should
Five anti-electric interlocks are set between the 10kV choppers of transformator and the unlatching of transformer case door, to prevent operator in transformation
Mistakenly entering charged chamber when device is powered, conventional interlock method is to install electromagnetic lock on transformator external door, and its operation principle is：Electricity
Magnetic padlock wire loop（Qianmen DCS1, back door DCS2）The normally closed auxiliary contact of the 10kV choppers of the transformator is protected in series connection
（DL）, when the breaker open operation, auxiliary contact（DL）Closure, electromagnetic lock coil（Qianmen DCS1, back door DCS2）Connect（As schemed
Shown in 1）, transformator external door open, can be checked or be keeped in repair.But this kind of interlock method is still defective：When external door is not closed,
10kV choppers still can normally close a floodgate, and transformator is powered, operator in the case of unwitting, between easy mistakenly entering into charged
Every, it is impossible to ensure personal safety.
The content of the invention
The purpose of this utility model is the defect for overcoming prior art to exist, there is provided a kind of breaker protection transformator external door
Interlock.
To avoid the generation of this kind of dangerous situation, this utility model from being improved this kind of interlock, by original transformation
Electromagnetic lock on device external door is cancelled, and travel switch is installed on external door, and the normally closed point that the trip is switched is parallel to into chopper
In switching winding control loop, when transformator external door is opened, the normally closed point closure of travel switch, circuit breaker trip.This practicality is new
Type is adopted the technical scheme that：A kind of outer door interlock of breaker protection transformator, including outside breaker of switch cabinet, transformator
Interlock and chopper DL control protective loops that door is arranged between opening, described chopper DL control protective loops include control
Make little bus, automatic switch, switch cubicle separating brake to open and cascading trip mechanism with combined floodgate and transformator external door, it is characterized in that：
Travel switch is installed on transformator external door, the normally closed point of the trip switch is parallel to the switching winding control loop of chopper
In；Little bus is controlled by automatic switch 2K by direct-current power supply chopper DL, permutator KK 5,6 points of closures when, electricity
Road connects breaker closing coil HQ through protection device 1n, breaker closing；Permutator KK 7,8 points of closures when, electricity
Road connects breaker open operation coil TQ through protection device 1n, breaker open operation.
Described protection device 1n connection relay J3 is protection separating brake output, when relay J3 is in closure state, electricity
Road Jing protection devices 1n make chopper automatic brake separating；Normally closed Qianmen XK1 of travel switch, the back door XK2 installed on transformator door
In being parallel to the switching winding control loop of chopper, when transformator external door is opened, travel switch normally closed Qianmen XK1, back door
XK2 is closed, and breaker open operation coil TQ must be electrically connected, breaker open operation.
Interlock designed by this utility model, can effectively prevent operator from transformator is entered when transformator is powered
Room, so as to avoid operator's mistakenly entering charged chamber in the case of unwitting, as long as transformator external door is in open mode, institute
Corresponding 10kV choppers all can separating brake, fully perfect " five prevent " interlock, it is ensured that the safety of operator；Its cost
It is cheap, install, it is simple to operate, device action is sensitive.
Description of the drawings
Fig. 1 is existing transformator interlock circuit schematic diagram.
Fig. 2 is transformator interlock circuit schematic diagram after improving.
Specific embodiment
As shown in Fig. 2 the outer door interlock of 10kV breaker protections transformator designed by this utility model, that is, design a kind of
Five anti-electric interlocking installations are set between the new 10kV choppers of the protection transformator and the unlatching of transformer case door, including opening
Close the interlock and chopper DL control protective loops arranged between cabinet breaker, transformator external door are opened, chopper DL controls
Protective loop includes that the little bus of control, automatic switch, switch cubicle separating brake are opened and cascading trip with combined floodgate and transformator external door
Mechanism；Control principle of the present utility model is as follows：Control little bus to make direct-current power supply chopper by automatic switch 2K
For operation power, operate the permutator KK on instrument door, KK 5,6 points of closures when, circuit is through protection device 1n, chopper
Closing coil HQ is connected, breaker closing；KK 7,8 points of closures when, circuit is through protection device 1n, breaker open operation coil TQ
Connect, breaker open operation；Protection device 1n connection J3 relays are protection separating brake output, when generation excessively stream, overload, quick-break etc.
During failure, J3 is in closure state, and circuit Jing protection devices 1n make chopper automatic brake separating.Connection mode is：By transformator door
The normally closed point of the travel switch of upper installation（Qianmen XK1, back door XK2）In being parallel to the switching winding control loop of chopper,
When transformator external door is opened, the normally closed point of travel switch（Qianmen XK1, back door XK2）Closure, breaker open operation coil TQ obtains electric connecing
It is logical, breaker open operation；When transformator external door is closed, the normally closed point of travel switch（Qianmen XK1, back door XK2）It is off, should
Kind of interlock method, as long as transformator external door is in open mode, corresponding 10kV choppers all can separating brake, 10kV choppers with
The improvement project of the outer gate interlock of dry-type transformer has replaced completely old interlock method to be used in customer substation, completely full
Five anti-functions of foot, it is ensured that personal safety.
Claims (2)
1. a kind of outer door interlock of breaker protection transformator, including setting between breaker of switch cabinet, transformator external door are opened
Interlock and chopper DL control protective loops, described chopper DL controls protective loop include the little bus of control, from
Dynamic switch, switch cubicle separating brake are opened and cascading trip mechanism with combined floodgate and transformator external door, be it is characterized in that：In transformator external door
On travel switch is installed, the normally closed point of the trip switch is parallel in the switching winding control loop of chopper；Control little mother
Line by automatic switch 2K by direct-current power supply chopper DL, permutator KK 5,6 points of closures when, circuit is through protection dress
Putting 1n connects breaker closing coil HQ, breaker closing；Permutator KK 7,8 points of closures when, circuit is through protection dress
Putting 1n connects breaker open operation coil TQ, breaker open operation.
2. the outer door interlock of breaker protection transformator according to claim 1, is characterized in that：Described protection device
1n connection relay J3 are protection separating brake output, and when relay J3 is in closure state, circuit Jing protection devices 1n make chopper
Automatic brake separating；Normally closed Qianmen XK1 of travel switch, the back door XK2 installed on transformator door is parallel to the switching winding of chopper
In control loop, when transformator external door is opened, normally closed Qianmen XK1 of travel switch, back door XK2 closure, breaker open operation coil
TQ must be electrically connected, breaker open operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621265638.9U CN206179715U (en) | 2016-11-24 | 2016-11-24 | Outer door interlock of circuit breaker protection transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621265638.9U CN206179715U (en) | 2016-11-24 | 2016-11-24 | Outer door interlock of circuit breaker protection transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206179715U true CN206179715U (en) | 2017-05-17 |
Family
ID=58685960
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621265638.9U Expired - Fee Related CN206179715U (en) | 2016-11-24 | 2016-11-24 | Outer door interlock of circuit breaker protection transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206179715U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107681569A (en) * | 2017-11-09 | 2018-02-09 | 徐州海伦哲专用车辆股份有限公司 | A kind of protective cover and its application method of copper bar terminals |
| CN108631162A (en) * | 2018-06-26 | 2018-10-09 | 河南森源电气股份有限公司 | Prevent maintenance mistiming from closing the control circuit and transformer substation system of high side switch |
| CN108879626A (en) * | 2018-07-23 | 2018-11-23 | 石狮市电力工程有限责任公司 | The anti-switch false switching circuit of one kind and power supply line |
-
2016
- 2016-11-24 CN CN201621265638.9U patent/CN206179715U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107681569A (en) * | 2017-11-09 | 2018-02-09 | 徐州海伦哲专用车辆股份有限公司 | A kind of protective cover and its application method of copper bar terminals |
| CN108631162A (en) * | 2018-06-26 | 2018-10-09 | 河南森源电气股份有限公司 | Prevent maintenance mistiming from closing the control circuit and transformer substation system of high side switch |
| CN108879626A (en) * | 2018-07-23 | 2018-11-23 | 石狮市电力工程有限责任公司 | The anti-switch false switching circuit of one kind and power supply line |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170517 |