CN205070179U - Electric blocking device of electric power low -voltage switchgear - Google Patents
Electric blocking device of electric power low -voltage switchgear Download PDFInfo
- Publication number
- CN205070179U CN205070179U CN201520877964.4U CN201520877964U CN205070179U CN 205070179 U CN205070179 U CN 205070179U CN 201520877964 U CN201520877964 U CN 201520877964U CN 205070179 U CN205070179 U CN 205070179U
- Authority
- CN
- China
- Prior art keywords
- cabinet
- low voltage
- incoming line
- voltage incoming
- contact
- Prior art date
- 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.)
- Active
Links
Landscapes
- Gas-Insulated Switchgears (AREA)
Abstract
The utility model discloses a simple structure can guarantee the reliable electric blocking device of operation simultaneously. The technical scheme of the utility model comprises an electric blocking device of electric power low -voltage switchgear, including two low pressure inlet wire cabinets and a contact cabinet, the power supply line of different transformer substations is connected respectively to two low pressure inlet wire cabinets, establishes ties between two low pressure inlet wire cabinets and a contact cabinet, and every low pressure inlet wire cabinet and contact cabinet set up a circuit breaker, two auxiliary contacts and a closing coils respectively, and two sets of auxiliary contacts of two low pressure inlet wire cabinets back of establishing ties is parallelly connected again, then gets in touch with the closing coils of cabinet on establishing ties, establish ties the respectively closing coils of two low pressure inlet wire cabinets of two auxiliary contacts of contact cabinet. Between two inlet wire cabinet circuit breakers and the network interconnecting circuit breaker 3, can only there be two to close a floodgate simultaneously, have avoided operation side by side. Need not to install the separating brake lock and the lock that closes a floodgate, reduce to install the degree of difficulty, improved production efficiency.
Description
Technical field
The utility model belongs to electric power system field, particularly relates to a kind of electric power low-pressure switch cubicle electric locking device.
Background technology
Electric power system is the reliability ensureing customer power supply, usually adopts and powers from the circuit of different substation, but can not be grid-connected from the circuit of different substation, causes danger.The conventional separating brake combined floodgate lock & key of incoming line cabinet and contact cabinet that adopts carries out mechanical latching.
Summary of the invention
For the demand, it is more simple that the purpose of this utility model is to provide a kind of structure, can ensure reliable electric locking device simultaneously.The technical solution adopted in the utility model is a kind of electric power low-pressure switch cubicle electric locking device, comprise two low voltage incoming line cabinets and a contact cabinet, two low voltage incoming line cabinets connect the supply line of different substation respectively, connect between two low voltage incoming line cabinets and a contact cabinet, each low voltage incoming line cabinet and contact cabinet arrange a circuit breaker, two auxiliary contacts and a closing coil respectively, after two groups of auxiliary contact series connection of two low voltage incoming line cabinets, in parallel again, the then closing coil of series connection upper contact cabinet; Two auxiliary contacts of described contact cabinet are connected the closing coil of two low voltage incoming line cabinets respectively.
Further, the auxiliary contact of described contact cabinet and closing coil connecting valve, make it be communicated with separately.
The utility model tool has the following advantages: adopt the technical solution of the utility model, under the prerequisite ensureing safe power supply, adopt the mode of auxiliary contact and closing coil, without the need to installing separating brake lock and the lock that closes a floodgate, and optional equipment key, structure is more simple, reduces production cost, reduce installation difficulty simultaneously, improve production efficiency.
Accompanying drawing explanation
Fig. 1 is the utility model electronic schematic diagram
Fig. 2 is the utility model contact cabinet secondary locking electronic schematic diagram
Fig. 3 is the utility model low voltage incoming line cabinet secondary locking electronic schematic diagram
Fig. 4 is another low voltage incoming line cabinet secondary locking electronic schematic diagram of the utility model
Embodiment
Below in conjunction with accompanying drawing, the technical solution of the utility model is further described; but protection range of the present utility model is not limited thereto; any those of ordinary skill in the art are in the technical scope disclosed by the utility model; without the conversion that creative work obtains, all should be encompassed in the utility model protection range.
As shown in the figure, 1-low voltage incoming line cabinet circuit breaker, 2-low voltage incoming line cabinet one circuit breaker, 3-gets in touch with cabinet breaker, 11-low voltage incoming line cabinet circuit breaker auxiliary contact, 21-low voltage incoming line cabinet one circuit breaker auxiliary contact, 31-gets in touch with cabinet breaker auxiliary contact, 12-low voltage incoming line cabinet breaker closing coil, 22-low voltage incoming line cabinet one breaker closing coil, 32-gets in touch with cabinet breaker closing coil.
A kind of electric power low-pressure switch cubicle electric locking device, comprise two low voltage incoming line cabinets and a contact cabinet, two low voltage incoming line cabinets connect the supply line of transformer station 1 and transformer station 25 respectively, connect between two low voltage incoming line cabinets and a contact cabinet.Low voltage incoming line cabinet arranges a low voltage incoming line cabinet circuit breaker 1, two low voltage incoming line cabinet circuit breaker auxiliary contacts 11 and a low voltage incoming line cabinet breaker closing coil 12; Low voltage incoming line cabinet one arranges low voltage incoming line cabinet one circuit breaker 2, two low voltage incoming line cabinet one circuit breaker auxiliary contacts 21 and a low voltage incoming line cabinet one breaker closing coil 22; Contact cabinet arranges contact cabinet breaker 3, a two contact cabinet breaker auxiliary contact 31 and a contact cabinet breaker closing coil 32.
When getting in touch with cabinet breaker 3 and being in gate-dividing state, contact cabinet breaker auxiliary contact 31 is closed conductings, low voltage incoming line cabinet breaker closing coil 12 and low voltage incoming line cabinet one breaker closing coil 22 can be energized action, and low voltage incoming line cabinet circuit breaker 1 and low voltage incoming line cabinet one circuit breaker 2 can close a floodgate.When low voltage incoming line cabinet circuit breaker 1 and low voltage incoming line cabinet one circuit breaker 2 are in while during "on" position, its auxiliary contact low voltage incoming line cabinet circuit breaker auxiliary contact 11 and low voltage incoming line cabinet one circuit breaker auxiliary contact 21 are that action disconnects, contact cabinet breaker closing coil 32 disconnects the action that cannot be energized, and contact cabinet breaker 3 cannot electrically close a floodgate.
When low voltage incoming line cabinet circuit breaker 1 is in gate-dividing state, low voltage incoming line cabinet circuit breaker auxiliary contact 11 is closed conductings; Low voltage incoming line cabinet one circuit breaker 1 closes a floodgate after power supply, and low voltage incoming line cabinet one circuit breaker auxiliary contact 21 is closed conductings, and now current circuit 6 is conducting states, and contact cabinet breaker closing coil 32 can be energized action, and contact cabinet breaker 3 can close a floodgate.When low voltage incoming line cabinet one circuit breaker 2 and contact cabinet breaker 3 are in while during "on" position, contact cabinet breaker auxiliary contact 31 is that action disconnects, low voltage incoming line cabinet breaker closing coil 12 is because disconnecting the action that cannot be energized, and low voltage incoming line cabinet circuit breaker 1 cannot electrically close a floodgate.
When low voltage incoming line cabinet one circuit breaker 2 is in gate-dividing state, low voltage incoming line cabinet one circuit breaker auxiliary contact 21 is closed conductings; Low voltage incoming line cabinet circuit breaker 1 closes a floodgate after power supply, and low voltage incoming line cabinet circuit breaker auxiliary contact 11 is closed conductings, and now current circuit 7 is conducting states, and 32 can be energized action, and circuit breaker Q 3 can be closed a floodgate.When low voltage incoming line cabinet circuit breaker 1 and low voltage incoming line cabinet one circuit breaker 2 are in while during "on" position, contact cabinet breaker auxiliary contact 31 is that action disconnects, current circuit 8 disconnects, low voltage incoming line cabinet one breaker closing coil 22 is because disconnecting the action that cannot be energized, and low voltage incoming line cabinet one circuit breaker 2 cannot electrically close a floodgate.
In sum, between two incoming line cabinet circuit breakers and network interconnecting circuit 3, two can only be had simultaneously to close a floodgate, avoid paired running.
Claims (2)
1. an electric power low-pressure switch cubicle electric locking device, comprise two low voltage incoming line cabinets and a contact cabinet, two low voltage incoming line cabinets connect the supply line of different substation respectively, connect between two low voltage incoming line cabinets and a contact cabinet, it is characterized in that: each low voltage incoming line cabinet and contact cabinet arrange a circuit breaker, two auxiliary contacts and a closing coil respectively, after two groups of auxiliary contact series connection of two low voltage incoming line cabinets, more in parallel, the then closing coil of series connection upper contact cabinet; Two auxiliary contacts of described contact cabinet are connected the closing coil of two low voltage incoming line cabinets respectively.
2. a kind of electric power low-pressure switch cubicle electric locking device according to claim 1, is characterized in that: the auxiliary contact of described contact cabinet and closing coil connecting valve, makes it be communicated with separately.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520877964.4U CN205070179U (en) | 2015-11-05 | 2015-11-05 | Electric blocking device of electric power low -voltage switchgear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520877964.4U CN205070179U (en) | 2015-11-05 | 2015-11-05 | Electric blocking device of electric power low -voltage switchgear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205070179U true CN205070179U (en) | 2016-03-02 |
Family
ID=55396688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520877964.4U Active CN205070179U (en) | 2015-11-05 | 2015-11-05 | Electric blocking device of electric power low -voltage switchgear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205070179U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110601348A (en) * | 2019-09-18 | 2019-12-20 | 广东金升电器股份有限公司 | Mechanical interlocking device of power supply transmission system |
| CN112164603A (en) * | 2020-08-28 | 2021-01-01 | 临涣焦化股份有限公司 | Closing and locking system of low-voltage main feeder brake separating and communicating cabinet of low-voltage substation |
| CN112966379A (en) * | 2021-03-07 | 2021-06-15 | 广东电网有限责任公司广州供电局 | Anti-misoperation method and device based on locking |
-
2015
- 2015-11-05 CN CN201520877964.4U patent/CN205070179U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110601348A (en) * | 2019-09-18 | 2019-12-20 | 广东金升电器股份有限公司 | Mechanical interlocking device of power supply transmission system |
| CN112164603A (en) * | 2020-08-28 | 2021-01-01 | 临涣焦化股份有限公司 | Closing and locking system of low-voltage main feeder brake separating and communicating cabinet of low-voltage substation |
| CN112966379A (en) * | 2021-03-07 | 2021-06-15 | 广东电网有限责任公司广州供电局 | Anti-misoperation method and device based on locking |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9614364B2 (en) | Detection system and detection method of distributed generation islanding based on power frequency carrier | |
| CN203312781U (en) | Integrated anti-islanding protection system for distributed power generation | |
| CN205070179U (en) | Electric blocking device of electric power low -voltage switchgear | |
| CN103560512A (en) | High-reliability closed loop wiring method of medium voltage distribution network | |
| CN203352192U (en) | Direct current switch device | |
| CN204577857U (en) | A kind of 110kV transformer station adopting novel wire connecting way | |
| CN206673583U (en) | A kind of pre-excitation loop of energy-storage system | |
| CN201717670U (en) | Dual-power-supply switching device with overvoltage protection | |
| CN201733065U (en) | Low-voltage single-phase power source overvoltage protective device | |
| CN203911453U (en) | An inlet wire cabinet control system | |
| CN205724893U (en) | A kind of two mother cabinet electrical interlocks control systems of three inlet wires | |
| CN201156648Y (en) | Mother connection switch circuit of 10KV main connecting wire for alumina plant | |
| CN201629259U (en) | Geographic information system (GIS) | |
| CN205453109U (en) | Two line user phasing switch devices of low pressure | |
| CN204046437U (en) | The protective circuit of photovoltaic DC-to-AC converter | |
| CN208257397U (en) | A kind of spare power automatic switching system | |
| CN204696794U (en) | A kind of twin-power switch cabinet | |
| CN203849359U (en) | Converter station-to-outside feed line single-phase earth fault detection control apparatus | |
| CN204046152U (en) | A kind of zero voltage protection warning circuit | |
| CN216672588U (en) | Remote control closing intelligent control device | |
| CN203387199U (en) | Generator synchronization grid connected automatic apparatus | |
| CN107947354A (en) | A kind of generator self-starting electric power system | |
| CN203180327U (en) | Safety protection system of centrally-installed switchgear | |
| CN110137917B (en) | Conversion circuit for improving power supply reliability of alternating-current-to-direct-current power distribution line and control method thereof | |
| CN202772651U (en) | Novel secondary voltage switching circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |