CN207926166U - A kind of blocking device preventing accidentally combination switch - Google Patents
A kind of blocking device preventing accidentally combination switch Download PDFInfo
- Publication number
- CN207926166U CN207926166U CN201721359618.2U CN201721359618U CN207926166U CN 207926166 U CN207926166 U CN 207926166U CN 201721359618 U CN201721359618 U CN 201721359618U CN 207926166 U CN207926166 U CN 207926166U
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- CN
- China
- Prior art keywords
- intermediate relay
- breaker
- protective device
- operation box
- side operation
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model is a kind of blocking device preventing accidentally combination switch, high voltage bus of the live high-tension apparatus through cable, breaker access substation or switchyard；In circuit breaker position installation microcomputer measuring and controlling protective device and locking intermediate relay, microcomputer measuring and controlling protective device is connect with locking intermediate relay；Machine side operation box is installed at the scene, machine side operation box is connect with breaker and locking intermediate relay by high-tension apparatus machine.Advantage：（1）Shutting-brake control loop realizes locking with protective device action by the high-tension apparatus machine started to production scene, and technically effectively preventing accidentally combination switch leads to the generation of secondary system short-circuit impact, equipment secondary damage accident.
Description
Technical field
The utility model belongs to Operation Technique of Electric Systems field, is related to the protection circuit of high-tension apparatus.
Background technology
In smelter 6kV~35kV distribution systems, production scene high-pressure hydraulic pump, wind turbine, crusher, travelling belt etc. are set
It is standby, it is required for live start and stop to operate, the case where live start and stop is very frequent.With the continuous development and change of automatic technology
Power station personnel's simplifies, and switchyard, substation have been carried out unattended.In staffed station institute, live high-tension apparatus or confession
After electrical circuit breaks down, latch switch is transformed into locked position of coupler by watch, it is live then can not close a floodgate.But unattended
Station institute, produced on-site personnel do not know about under fault condition after current supply circuit failure or equipment fault, switch trip, often
Shutting-brake control switch carries out closing operation by operation machine, leads to the secondary damage of power supply system second short circuit impact and equipment in this way
It is bad, in some instances it may even be possible to cause personal safety accident.
Therefore, in unattended station institute, the equipment of production scene start and stop can be realized normal by machine under normal circumstances
Breaking-closing operating ensures that production is normally carried out.After the failures such as ground connection, short circuit occur for the equipment current supply circuit cable, motor,
Shutting-brake control loop is just particularly important by breech-block while protective relaying device action tripping switch, and research is by adopting
Closing circuit by the selectable breech-block of technical measures is taken, prevents secondary system impact and equipment secondary impaired, enterprise is improved
Equipment automatization level and propulsion unattended station are raised labour productivity significant.
Utility model content
The utility model provides a kind of blocking device preventing accidentally combination switch, solves primarily directed to the above problem
The high-tension apparatus of unattended operation transformer station production scene start and stop, because current supply circuit break down or the equipment such as high-voltage motor occur therefore
After barrier, closing circuit by automatic blocking machine effectively prevent production scene personnel to miss the operation of combination switch.
The technical solution adopted in the utility model is：A kind of blocking device preventing accidentally combination switch, live high-tension apparatus warp
The high voltage bus of cable, breaker access substation or switchyard；In circuit breaker position installation microcomputer measuring and controlling protective device and close
Intermediate relay is locked, microcomputer measuring and controlling protective device is connect with locking intermediate relay, and microcomputer measuring and controlling protective device connects with breaker
It connects, microcomputer measuring and controlling protective device drives locking intermediate relay by protection act outlet junctions cut-off breaker；Existing
Machine side operation box is installed, machine side operation box connect with breaker and locking intermediate relay, operated by machine by the high-tension apparatus machine of field
Case carries out normal breaking-closing operating to breaker, locking intermediate relay in case of a fault to machine side operation box closing circuit into
Row locking.
The microcomputer measuring and controlling protective device is protection, measures, control integrated apparatus, and two groups of unit protection configuration is only
Vertical exit relay, one group switchs for disconnecting this cabinet, and one group is used for start signal output intermediate relay.
The utility model has the beneficial effects that：（1）Using the coordination between microcomputer measuring and controlling protective device and intermediate relay
It controls, realizes and close a floodgate by breech-block under current supply circuit fault condition, prevent the purpose for missing combination switch by machine.The utility model is to station
Shutting-brake control loop realizes locking with protective device action by the high-tension apparatus machine that institute production scene starts, and is meeting production just
By normal machine in the case of start and stop, when live high-tension apparatus, current supply circuit break down can automatically to closing operation by machine into
Row locking, technically effectively preventing accidentally combination switch leads to the generation of secondary system short-circuit impact, equipment secondary damage accident.
（2）The utility model keeps unattended station institute field device start and stop more safe and reliable, is conducive to promote power transformation
It stands, switchyard realizes unattended and remote monitoring.
Description of the drawings
Fig. 1 prevents the blocking device schematic diagram of accidentally combination switch；
Fig. 2 prevents the blocking device logic schematic diagram of accidentally combination switch；
Reference numeral in figure：1- high voltage bus, 2- breakers, 3- cables, the scenes 4- high-tension apparatus, the protection of 5- microcomputer measuring and controllings
Device, 6- lockings intermediate relay, 7- machine side operation boxes, 8- machines side combined floodgate contact, 9- protective devices outlet junctions, 10- remote controls
Output contact, 11- air switches, the small busbar of 12- direct currents.
Specific implementation mode
It is described further with reference to 1,2 pair of mode of the utility model of attached drawing：
1, such as scenes Fig. 1 high-tension apparatus 4 accesses the high voltage bus 1 of substation or switchyard through cable 3, breaker 2.
2, microcomputer measuring and controlling protective device 5 and locking intermediate relay 6, microcomputer measuring and controlling protection dress are installed in 2 position of breaker
It sets 5 to connect with locking intermediate relay 6, microcomputer measuring and controlling protective device 5 is connect with breaker 2.Shutting-brake control loop concatenation by machine
Intermediate relay normally closed contact, intermediate relay are driven by microcomputer measuring and controlling protective device.Microcomputer measuring and controlling protective device 5 can pass through guarantor
Shield acts outlet junctions cut-off breaker 2, while can drive locking intermediate relay 6.
3, machine side operation box 7 is installed by 4 machine of high-tension apparatus at the scene, machine side operation box 7 among breaker 2 and locking after
Electric appliance 6 connects, and machine side operation box 7 can carry out breaker 2 normal breaking-closing operating, and locking intermediate relay 6 is in fault condition
Under 7 closing circuit of machine side operation box is latched.It is latched 6 voltage of intermediate relay to be determined according to operation circuit voltage, and has
Standby driving self-retaining function.
4, latching logic such as Fig. 2：Under normal circumstances, closing switch by operation machine, machine side combined floodgate contact 8 is closed equipment, is opened
It closes cabinet closing coil and obtains electric, breaker closing；After short circuit or device fails occur for power transmission circuit, digital relay and monitoring dress
Action is set, protective device outlet junctions 9 are closed, and driving intermediate relay KA, KA normally closed contact disconnects, and locking scene is closed a floodgate back
Road；After Failure elimination, involution is remotely controlled by microcomputer protecting controller, remote control output contact 10 is closed, and drives intermediate relay
Device KA, KA normally closed contact is connected, closing circuit unlocking by machine.
The utility model is mainly used in the high voltage supply circuit of Unmanned Transformer Place scene start and stop.In actual production
In, after the equipment generation short trouble that scene starts, it is protection act situation since site operation personnel does not know about, often operates
Equipment is restarted, is caused on He Zhong Library point.The utility model is the shutting-brake control loop series connection access started at the scene
It is latched intermediate relay, scene can normally open machine when power transmission circuit fault-free, when short circuit or equipment hair occur for power transmission circuit
After raw failure, microcomputer measuring and controlling protective device acts tripping switch, while intermediate relay being driven to act, and locking scene is closed a floodgate back
Road makes scene that can not carry out closing operation, it is therefore prevented that the impact of power supply system second short circuit and equipment caused by scene accidentally combination switch
Secondary damage.After Failure elimination, involution can be carried out by a distant place or on the spot to intermediate relay, scene can open machine again.
The technology is that live closing circuit is latched under fault condition by the logic control of protective device, intermediate relay, with prevent because
Accidentally combination switch causes power supply system second short circuit to impact the secondary damage with equipment at scene.
Above-described is only the representative instance of the utility model, and the technical solution of the utility model is not limited thereto,
It should be understood that those skilled in the art, under technical inspiration provided by the utility model, as this field
Common knowledge, other equivalent modifications and improvement can also be made, also should be regarded as the scope of protection of the utility model.
Claims (1)
1. a kind of blocking device preventing accidentally combination switch, it is characterized in that：Live high-tension apparatus（4）Through cable（3）, breaker（2）
Access the high voltage bus of substation or switchyard（1）；In breaker（2）Position is installed by microcomputer measuring and controlling protective device（5）And locking
Intermediate relay（6）, microcomputer measuring and controlling protective device（5）With locking intermediate relay（6）Connection, microcomputer measuring and controlling protective device（5）
With breaker（2）Connection, microcomputer measuring and controlling protective device（5）Pass through protection act outlet junctions cut-off breaker（2）, drive simultaneously
It is latched intermediate relay（6）；High-tension apparatus at the scene（4）Machine side operation box is installed by machine（7）, machine side operation box（7）With open circuit
Device（2）With locking intermediate relay（6）Connection, machine side operation box（7）To breaker（2）Normal breaking-closing operating is carried out, is latched
Intermediate relay（6）In case of a fault to machine side operation box（7）Closing circuit is latched；The microcomputer measuring and controlling protective device
（5）Two groups of separate outlet ports relays are configured for protection, measurement, control integrated apparatus, and the unit protection, one group is used to disconnect
This cabinet switchs, and one group is used for start signal output intermediate relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721359618.2U CN207926166U (en) | 2017-10-20 | 2017-10-20 | A kind of blocking device preventing accidentally combination switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721359618.2U CN207926166U (en) | 2017-10-20 | 2017-10-20 | A kind of blocking device preventing accidentally combination switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207926166U true CN207926166U (en) | 2018-09-28 |
Family
ID=63612671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721359618.2U Expired - Fee Related CN207926166U (en) | 2017-10-20 | 2017-10-20 | A kind of blocking device preventing accidentally combination switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207926166U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111193239A (en) * | 2020-02-17 | 2020-05-22 | 岳阳长炼机电工程技术有限公司 | Relay protection action locking motor starting device |
-
2017
- 2017-10-20 CN CN201721359618.2U patent/CN207926166U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111193239A (en) * | 2020-02-17 | 2020-05-22 | 岳阳长炼机电工程技术有限公司 | Relay protection action locking motor starting device |
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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: 20180928 Termination date: 20191020 |