CN102856113A - Electric locking circuit of maintenance backdoor of high-voltage power distribution cabinet - Google Patents
Electric locking circuit of maintenance backdoor of high-voltage power distribution cabinet Download PDFInfo
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- CN102856113A CN102856113A CN2012102904340A CN201210290434A CN102856113A CN 102856113 A CN102856113 A CN 102856113A CN 2012102904340 A CN2012102904340 A CN 2012102904340A CN 201210290434 A CN201210290434 A CN 201210290434A CN 102856113 A CN102856113 A CN 102856113A
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- backdoor
- back door
- voltage power
- maintenance
- power distribution
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- 238000012423 maintenance Methods 0.000 title abstract description 11
- 230000000903 blocking effect Effects 0.000 claims description 10
- 238000004088 simulation Methods 0.000 abstract 2
- 230000005611 electricity Effects 0.000 description 7
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
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Abstract
The invention discloses an electric locking circuit of a maintenance backdoor of a high-voltage power distribution cabinet, belonging to the technical field of high-voltage electric locking. The electric locking circuit comprises a simulation state display contact and a low-voltage power source which are connected to a primary loop, and further comprises a backdoor stroke switch, a ground knife locking electromagnet, a ground knife auxiliary contact and a backdoor electromagnetic lock; the backdoor stroke switch and the ground knife locking electromagnet are connected in series; the ground knife auxiliary contact is connected with the backdoor electromagnetic lock in series; and the backdoor stroke switch and the ground knife locking electromagnet are connected in parallel with the ground knife auxiliary contact and the backdoor electromagnetic lock, and then are connected with the simulation state display contact on the primary loop and a low-voltage power source. With the adoption of the electric locking circuit provided by the invention, the electric locking function of the maintenance backdoor of the high-voltage power distribution cabinet can be effectively realized, so that in a condition of opening the maintenance backdoor of the high-voltage power distribution cabinet, a maintainer cannot operate a ground knife. Therefore, the personal security of the maintainer can be effectively ensured, and the maintenance risk is reduced.
Description
Technical field
The present invention relates to a kind of electric blocking circuit, specifically a kind of high voltage power distributing cabinet is when maintenance, and back door electric blocking circuit problem belongs to high-voltage electrical apparatus locking technical field.
Background technology
In the prior art; KYN28A-12 type indoor metal armoring central switch equipment; it is the complete power distribution equipment of three-phase alternating current 50HZ single busbar connection and sectionalized single busbar connection system; be used for accepting and distributing the network power of 3.6-12KV; and power circuit carried out control protection, monitoring and measuring, be mainly used in being subjected to electricity, sending electricity and Large-scale High-Pressure motor start-up etc. of secondary substation that power plant, medium and small generator send electricity, industrial and mineral enterprises and institutions distribution and electric industry system.But in the maintenance back door electric blocking circuit of existing power distribution cabinet, locking is comparatively simple, safety protection function a little less than; when opened at the back door, the maintainer is cutter operatively still, exists serious potential safety hazard; especially in high voltage power distributing cabinet used, this class problem was especially outstanding.
Summary of the invention
Problem for above-mentioned prior art existence, the invention provides a kind of high voltage power distributing cabinet maintenance back door electric blocking circuit, effectively realize the electric blocking function of high-voltage power distribution cabinet back door, reach in the situation that power distribution cabinet is opened at the back door, the maintainer is the purpose that operates of cutter over the ground, ensure maintainer's personal safety, reduce the maintenance risk.
To achieve these goals, the present invention includes the emulation mode display contact and the low-tension supply that are connected on the primary circuit, also comprise the back door travel switch, the cutter latching electromagnet, cutter auxiliary contact and back door electromagnetic lock, the back door travel switch is connected with ground cutter latching electromagnet, ground cutter auxiliary contact is connected with the back door electromagnetic lock, back door travel switch and ground cutter latching electromagnet and ground cutter auxiliary contact and back door electromagnetic lock emulation mode display contact and the low-tension supply that accesses afterwards on the primary circuit in parallel.
The invention has the beneficial effects as follows: by adopting contact on back door travel switch and ground cutter latching electromagnet and ground cutter auxiliary contact and the back door electromagnetic lock emulation mode display that accesses afterwards on the primary circuit in parallel and the mode of low-tension supply, effectively realized the electric blocking function of high-voltage power distribution cabinet back door, realized in the situation that is opening at the power distribution cabinet back door, the maintainer is the purpose that operates of cutter over the ground, personal safety that can the effective guarantee maintainer has reduced the maintenance risk.
Description of drawings
Fig. 1 is circuit theory diagrams of the present invention.
Among the figure: 1, emulation mode display contact, 2, the back door travel switch, 3, the cutter latching electromagnet, 4, the cutter auxiliary contact, 5, the back door electromagnetic lock, 6, low-tension supply.
Embodiment
The present invention will be further described below in conjunction with accompanying drawing.
As shown in Figure 1, this electric blocking circuit comprises emulation mode display contact 1 and the low-tension supply 6 that is connected on the primary circuit, also comprise back door travel switch 2, cutter latching electromagnet 3, cutter auxiliary contact 4 and back door electromagnetic lock 5, back door travel switch 2 is connected with ground cutter latching electromagnet 3, ground cutter auxiliary contact 4 is connected with back door electromagnetic lock 5, back door travel switch 2 and ground cutter latching electromagnet 3 and ground cutter auxiliary contact 4 and back door electromagnetic lock 5 rear emulation mode display contact 1 and the low-tension supplies 6 that access on the primary circuits in parallel.
Operation principle of the present invention is: when primary circuit (major loop) dead electricity, when circuit breaker is in test position, the contact (17 of emulation mode display contact 1,18) closure is in conducting state, when the back door when closing, the 2 contact conductings of back door travel switch, the ground cutter latching electromagnet 3 of at this moment locking ground cutter has electricity, at this moment maintainer's cutter operatively; And when opened at the back door, back door travel switch 2 contacts can't conducting, and ground cutter latching electromagnet 3 dead electricity of at this moment locking ground cutter are just so that maintainer's cutter operatively; Only be in the co-bit state at the ground cutter, namely during cutter ground connection, ground cutter auxiliary contact 4 conductings, cutter latching electromagnet 3 dead electricity side by side, back door travel switch 2 disconnects, back door electromagnetic lock 5 can open the back door after electric.
So just effectively realized the electric blocking to high-voltage power distribution cabinet back door, realized that maintainer over the ground cutter operates in the situation that is opening at the power distribution cabinet back door, guaranteed that the maintainer overhauls high-voltage board under safe condition.
Claims (1)
1. a high voltage power distributing cabinet overhauls back door electric blocking circuit, comprise the emulation mode display contact (1) and the low-tension supply (6) that are connected on the primary circuit, it is characterized in that, also comprise back door travel switch (2), ground cutter latching electromagnet (3), ground cutter auxiliary contact (4) and back door electromagnetic lock (5), back door travel switch (2) is connected with ground cutter latching electromagnet (3), ground cutter auxiliary contact (4) is connected with back door electromagnetic lock (5), emulation mode display contact (1) and low-tension supply (6) after back door travel switch (2) and ground cutter latching electromagnet (3) are in parallel with ground cutter auxiliary contact (4) and back door electromagnetic lock (5) on the access primary circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102904340A CN102856113A (en) | 2012-08-15 | 2012-08-15 | Electric locking circuit of maintenance backdoor of high-voltage power distribution cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102904340A CN102856113A (en) | 2012-08-15 | 2012-08-15 | Electric locking circuit of maintenance backdoor of high-voltage power distribution cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102856113A true CN102856113A (en) | 2013-01-02 |
Family
ID=47402598
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102904340A Pending CN102856113A (en) | 2012-08-15 | 2012-08-15 | Electric locking circuit of maintenance backdoor of high-voltage power distribution cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102856113A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103178449A (en) * | 2013-04-18 | 2013-06-26 | 国家电网公司 | Safety protection system for centrally installed switchgear |
| CN105161334A (en) * | 2015-09-28 | 2015-12-16 | 国家电网公司 | Switching interlocking mechanism of electric grounding knife-switch |
| CN105575699A (en) * | 2016-02-03 | 2016-05-11 | 天津平高智能电气有限公司 | Intelligent interlocking system of switching device and interlocking cabinet thereof |
| CN110380354A (en) * | 2019-05-29 | 2019-10-25 | 湖北中科能能源技术有限公司 | A kind of station photovoltaic power generation 10kv control circuit for becoming cabinet |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005142017A (en) * | 2003-11-06 | 2005-06-02 | Fuji Electric Fa Components & Systems Co Ltd | Power disconnector |
| CN2802806Y (en) * | 2005-06-28 | 2006-08-02 | 上海天正机电(集团)有限公司 | Safety protection mechanism for back door of high-tension switch cubicle |
| CN101692534A (en) * | 2009-06-24 | 2010-04-07 | 张敬敏 | Blocking against misoperation, alarming and protecting device of high-voltage switch cabinet |
| CN202772028U (en) * | 2012-08-15 | 2013-03-06 | 徐州新电高科电气有限公司 | High-voltage power distribution cabinet maintenance back door electrical lockout circuit |
-
2012
- 2012-08-15 CN CN2012102904340A patent/CN102856113A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005142017A (en) * | 2003-11-06 | 2005-06-02 | Fuji Electric Fa Components & Systems Co Ltd | Power disconnector |
| CN2802806Y (en) * | 2005-06-28 | 2006-08-02 | 上海天正机电(集团)有限公司 | Safety protection mechanism for back door of high-tension switch cubicle |
| CN101692534A (en) * | 2009-06-24 | 2010-04-07 | 张敬敏 | Blocking against misoperation, alarming and protecting device of high-voltage switch cabinet |
| CN202772028U (en) * | 2012-08-15 | 2013-03-06 | 徐州新电高科电气有限公司 | High-voltage power distribution cabinet maintenance back door electrical lockout circuit |
Non-Patent Citations (1)
| Title |
|---|
| 罗杰等: "中置柜五防功能验收方法讨论", 《农村电气化》, no. 12, 31 December 2008 (2008-12-31) * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103178449A (en) * | 2013-04-18 | 2013-06-26 | 国家电网公司 | Safety protection system for centrally installed switchgear |
| CN105161334A (en) * | 2015-09-28 | 2015-12-16 | 国家电网公司 | Switching interlocking mechanism of electric grounding knife-switch |
| CN105575699A (en) * | 2016-02-03 | 2016-05-11 | 天津平高智能电气有限公司 | Intelligent interlocking system of switching device and interlocking cabinet thereof |
| CN110380354A (en) * | 2019-05-29 | 2019-10-25 | 湖北中科能能源技术有限公司 | A kind of station photovoltaic power generation 10kv control circuit for becoming cabinet |
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| PB01 | Publication | ||
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| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20130102 |