CN104201571A - Anti-misoperation ground protection mechanism for dry type transformer - Google Patents
Anti-misoperation ground protection mechanism for dry type transformer Download PDFInfo
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- CN104201571A CN104201571A CN201410480752.2A CN201410480752A CN104201571A CN 104201571 A CN104201571 A CN 104201571A CN 201410480752 A CN201410480752 A CN 201410480752A CN 104201571 A CN104201571 A CN 104201571A
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- transformer
- electromagnetic lock
- housing
- grounding switch
- type transformer
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Abstract
The invention relates to the field of transformer maintenance safety, in particular to an anti-misoperation ground protection mechanism for a dry type transformer. The anti-misoperation ground protection mechanism for the dry type transformer comprises the transformer, a shell outside the transformer, a ground operation mechanism, a protection mechanism and a control mechanism; the ground operation mechanism comprises an operation connecting rod and a ground knife switch in the shell, an operation mechanism of the ground knife is connected with one end of the operation connecting rod, and the other end of the operation connecting rod penetrates out of an operation hole in the shell; the protection mechanism comprises a baffle and a first electromagnetic lock, the baffle is arranged on one side of the operation hole, and the first electromagnetic lock controls the baffle to shield the operation hole; the control mechanism comprises an electrified display arranged on the shell, the electrified display comprises three electrified sensors and a display body, the three electrified sensors are connected with wire inlet ends of a three-phase wire on a high-voltage side of the transformer respectively, and the display body is arranged outside the shell. The anti-misoperation ground protection mechanism for the dry type transformer has the advantages that during outage for maintenance, the ground knife switch can be operated outside the shell of the transformer to finish reliable grounding of the transformer, and accordingly personal safety of maintainers can be guaranteed.
Description
Technical field
The present invention relates to Repair of Transformer security fields, be specifically related to a kind of for the fool proof ground protection of dry-type transformer mechanism.
Background technology
Along with transformer station's standardization construction, the handling safetys such as the equipment interruption maintenances such as transformer in transformer station are required to improve, ground connection when current dry-type transformer interruption maintenance, mainly use connecting line ground connection by maintainer or by other earthing device manual operation ground connection, jeopardize like this maintainer's personal safety, there is very high potential safety hazard.And, because maintainer judges improperly, as easy as rolling off a logly there is the power transmission misoperation in the time of ground state of the ground connection misoperation under transformer belt electricity condition and transformer, these are all unfavorable for the standardization construction of transformer station.
Summary of the invention
For addressing the above problem, the invention provides a kind of earthing device that is provided with protection mechanism and controlling organization, can monitor transformer state protective earthing operating mechanism by controlling organization, prevent ground connection in the time of the charged operation of transformer.
For achieving the above object, the technical solution used in the present invention is:
A kind of for the fool proof ground protection of dry-type transformer mechanism, comprise the housing in transformer and outside thereof, also comprise ground connection operating mechanism, protection mechanism and controlling organization;
Described ground connection operating mechanism comprises grounding switch and the operator link in housing, the terminal block of grounding switch is connected with high voltage side of transformer triple line end of incoming cables, grounding switch ground connection, the operating mechanism of grounding switch is connected with operator link one end, and the handle hole of the operator link other end from housing passes;
Described protection mechanism comprises is located at the baffle plate of handle hole one side and controls baffle plate the first electromagnetic lock that blocks handle hole;
Described controlling organization comprises the electrification display of being located on housing, electrification display comprises three electrified sensor being connected with high voltage side of transformer triple line end of incoming cables respectively and the display of hull outside, display input is connected with electrified sensor, its output connects external power source after connecting with the first electromagnetic lock coil, and the first electromagnetic lock coil is normally closed coil.
Grounding switch is set in housing, grounding switch can be closed a floodgate or separating brake by operator link outside housing, transformer grounding when grounding switch closes a floodgate, when grounding switch separating brake, transformer is earth-free.Need not enter like this in housing and just can complete ground connection, avoid maintainer directly to contact transformer, ensure maintainer's personal safety.And for the protected mechanism of operation of operator link and the control of controlling organization; if transformer is in normal charging operation state; electrification display shows that transformer is charged; can control electromagnetic lock and lose magnetic force simultaneously; unclamp baffle plate; baffle plate is got back to handle hole place and is blocked handle hole, cannot operational grounding mechanism, and the ground connection misoperation can prevent so the charged operation of transformer time.
Further, between the first electromagnetic lock and handle hole, be provided with the slide rail being slidably connected with baffle plate, be used for controlling the moving direction of baffle plate.When transformer is not charged, electromagnetic lock absorption baffle plate, opening operation hole, can operational grounding mechanism.Once and transformer is charged, electromagnetic lock loses suction, baffle plate slides into handle hole place along slide rail, blocks handle hole, operational grounding mechanism again.
Further, corresponding grounding switch separating brake and "on" position, present position place, operator link outer end is marked with " dividing ", " closing " mark, for judge grounding switch state from outside, and then judges transformer grounding state.When operator link outer end is in " dividing " position, can learn that grounding switch is in gate-dividing state, transformer is unearthed.When operator link outer end is in " closing " position, can learn that grounding switch is in "on" position, transformer grounding.While being convenient to judge safe condition from outside, then opening housing door and carry out service work.
Further, grounding switch is provided with limit switch, for responding to disconnecting link position signalling and sending to master station, is convenient to lock power-cutting switch, the power transmission misoperation while preventing transformer grounding in the time of transformer grounding state.When master station is during without this function, this signal can be sent on higher level's breaker of switch cabinet, control power-cutting switch by it.
Further, housing is provided with housing door, and housing door is provided with the second electromagnetic lock, and the second electromagnetic lock coil is normally closed coil, between display output and external power source.In the time that transformer is charged, electromagnetic lock is not charged, and the housing door of not opening meets the anti-requirement of transformer station five.
Further, hull outside is provided with thermostat, for the temperature in adjustment housings.
The present invention has the following advantages:
1, can, from the external operational grounding disconnecting link of transformer shell, complete the reliable ground of transformer when interruption maintenance, ensure maintainer's personal safety.
2, can in the time that transformer normally moves, block ground connection operating mechanism, prevent ground connection misoperation when transformer is charged.
3, can in the time of transformer grounding, lock power-cutting switch, the power transmission misoperation while preventing ground connection.
4, can be at the electriferous state of shell transformer observed in vitro and ground state.
5, can be in the time that transformer be charged locking housing door, meet five anti-requirements.
6, can show and control the temperature in housing.
Brief description of the drawings
Fig. 1 is front view of the present invention;
Fig. 2 is enclosure interior front view of the present invention;
Fig. 3 is enclosure interior vertical view of the present invention;
Fig. 4 is control principle drawing of the present invention;
Fig. 5 is that the charged electromagnetic lock of transformer is not charged, grounding switch gate-dividing state figure when baffle plate blocks handle hole;
Fig. 6 be transformer charged electromagnetic lock is not charged, grounding switch gate-dividing state figure when baffle plate opening operation hole;
Fig. 7 be transformer charged electromagnetic lock is not charged, grounding switch "on" position figure when baffle plate opening operation hole;
In figure, 1, housing, 2, housing door, 3, the second electromagnetic lock, 4, the first electromagnetic lock, 5, baffle plate, 6, display, 7, thermostat, 8, terminal box, 9, grounding switch, 10, electrified sensor, 11, cable bearer, 12, transformer, 13, limit switch, 14, terminal block, 15, operator link, 16, high-pressure side triple line end of incoming cables, 17, handle hole, 18, slide rail.
Embodiment
A kind of for the fool proof ground protection of dry-type transformer mechanism; comprise the housing 1 in transformer and outside; housing 1 one sides are provided with housing door 2; the housing wall inner side of sides adjacent is provided with grounding switch 9; the terminal block 14 of grounding switch 9 is connected with high voltage side of transformer triple line end of incoming cables 16; grounding switch 9 ground connections, the operating mechanism of grounding switch is connected with operator link 15 one end, and the handle hole 17 of operator link 15 other ends from housing passes.Grounding switch and operator link form the ground connection operating mechanism of this mechanism.Handle hole 17 1 sides are provided with baffle plate 5 and are used for controlling baffle plate the first electromagnetic lock 4 that blocks handle hole.Grounding switch 9 is provided with limit switch 13, with disconnecting link synchronizing moving, for responding to the position of disconnecting link, for master station provides the position signalling of grounding switch or this signal is offered on higher level's breaker of switch cabinet, to ensure can not to carry out power transmission operation when the grounding switch ground connection.Baffle plate, the first electromagnetic lock and limit switch form the protection mechanism of this mechanism.Cabinet door side is provided with terminal box 8, comprise electrification display and thermostat 7, electrification display comprises three displays 6 that are positioned at the electrified sensor 10 of high-pressure side three phase terminals and are connected with electrified sensor, display 6 is embedded on case panel, electrified sensor 10 is connected high voltage side of transformer input terminal 16 by self coupling capacitance with display 6, after two outputs of display are connected with the first electromagnetic lock coil K1, connect external power source.By transformer, whether electriferous state passes to electrification display to electrified sensor, electrification display again by judge transformer whether charged come output signal control the first electromagnetic lock.Electromagnetic lock coil is normally closed coil, and electromagnetic lock is charged suction, once electromagnetic lock coil disconnects, electromagnetic lock loses suction.When transformer is during in non-charging operation state, the first electromagnetic lock coil is closure state, and electromagnetic lock absorption baffle plate, exposes handle hole, now, can operational grounding disconnecting link, by its combined floodgate or separating brake, complete transformer grounding operation.When transformer arbitrary when mutually charged electrified sensor connect, the corresponding indicator light of display screen is bright, electromagnetic lock coil electricity disconnects simultaneously, electromagnetic lock is without suction, baffle plate is got back to handle hole place and is blocked handle hole.Now, can not operational grounding disconnecting link, can prevent ground connection in the time of transformer normal operating condition.In addition, on housing door 2, be also provided with the second electromagnetic lock 3, the second electromagnetic lock coil is normally off, the second electromagnetic lock coil is also connected between display output and external power source, when transformer is charged, the second electromagnetic lock coil is not charged, cannot open housing door, the misoperation of opening housing door while preventing the charged operation of transformer.When transformer is not charged, the second electromagnetic lock coil is charged, can open the operations such as housing door overhauls.
Claims (6)
1. for the fool proof ground protection of a dry-type transformer mechanism, comprise the housing (1) in transformer (12) and outside thereof, it is characterized in that: also comprise ground connection operating mechanism, protection mechanism and controlling organization;
Described ground connection operating mechanism comprises grounding switch (9) and the operator link (15) in housing, the terminal block (14) of grounding switch is connected with high voltage side of transformer triple line end of incoming cables (16), grounding switch ground connection, the operating mechanism of grounding switch is connected with operator link (15) one end, and the handle hole (17) of operator link (15) other end from housing passes;
Described protection mechanism comprises is located at the baffle plate (5) of handle hole one side and controls baffle plate the first electromagnetic lock (4) that blocks handle hole;
Described controlling organization comprises the electrification display of being located on housing, electrification display comprises respectively the display (6) with three electrified sensor (10) and the hull outside of high voltage side of transformer triple line end of incoming cables, display (6) input is connected with electrified sensor (10), its output connects external power source after connecting with the first electromagnetic lock coil (K1), and the first electromagnetic lock coil is normally closed coil.
2. according to claim 1 for the fool proof ground protection of dry-type transformer mechanism, it is characterized in that: between the first electromagnetic lock (4) and handle hole (17), be provided with the slide rail (18) being slidably connected with baffle plate, be used for controlling the moving direction of baffle plate.
3. according to claim 1 for the fool proof ground protection of dry-type transformer mechanism; it is characterized in that: corresponding grounding switch separating brake and "on" position; present position place, operator link outer end is marked with " dividing ", " closing " mark; for judge grounding switch state from outside, and then judge transformer grounding state.
According to described in claim 1 or 2 or 3 for the fool proof ground protection of dry-type transformer mechanism, it is characterized in that: grounding switch (9) is provided with limit switch (13), for responding to disconnecting link position signalling and sending to master station.
5. according to claim 4 for the fool proof ground protection of dry-type transformer mechanism; it is characterized in that: housing is provided with housing door (2); housing door is provided with the second electromagnetic lock (3), and the second electromagnetic lock coil K2 is normally closed coil, between display output and external power source.
6. according to claim 5 for the fool proof ground protection of dry-type transformer mechanism, it is characterized in that: hull outside is provided with thermostat (7), for the temperature in adjustment housings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410480752.2A CN104201571A (en) | 2014-09-19 | 2014-09-19 | Anti-misoperation ground protection mechanism for dry type transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410480752.2A CN104201571A (en) | 2014-09-19 | 2014-09-19 | Anti-misoperation ground protection mechanism for dry type transformer |
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| Publication Number | Publication Date |
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| CN104201571A true CN104201571A (en) | 2014-12-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410480752.2A Pending CN104201571A (en) | 2014-09-19 | 2014-09-19 | Anti-misoperation ground protection mechanism for dry type transformer |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104569508A (en) * | 2014-12-29 | 2015-04-29 | 国家电网公司 | Anti-misoperation device of low voltage measuring cabinet |
| CN105184923A (en) * | 2015-08-21 | 2015-12-23 | 国网天津市电力公司 | Error locking preventing system capable of preventing idling operation and high voltage live display device |
| CN105436556A (en) * | 2015-12-26 | 2016-03-30 | 宁波鑫晟工具有限公司 | Hand-held electric drill |
| CN105436561A (en) * | 2015-12-26 | 2016-03-30 | 宁波鑫晟工具有限公司 | Electric drill |
| CN105436558A (en) * | 2015-12-26 | 2016-03-30 | 宁波鑫晟工具有限公司 | Electric drill with misoperation prevention function |
| CN105436565A (en) * | 2015-12-26 | 2016-03-30 | 宁波鑫晟工具有限公司 | Electric hand drill |
| CN105436563A (en) * | 2015-12-26 | 2016-03-30 | 宁波鑫晟工具有限公司 | Anti-misoperation electric drill |
| CN105436559A (en) * | 2015-12-26 | 2016-03-30 | 宁波鑫晟工具有限公司 | Electric portable drill |
| CN105436562A (en) * | 2015-12-26 | 2016-03-30 | 宁波鑫晟工具有限公司 | Household hand-held electric drill |
| CN105436557A (en) * | 2015-12-26 | 2016-03-30 | 宁波鑫晟工具有限公司 | Domestic electric drill |
| CN105436564A (en) * | 2015-12-26 | 2016-03-30 | 宁波鑫晟工具有限公司 | Electric drill with anti-misoperation function |
| CN105458335A (en) * | 2015-12-26 | 2016-04-06 | 宁波鑫晟工具有限公司 | Domestic handheld electric drill |
| CN105896351A (en) * | 2016-04-15 | 2016-08-24 | 国网上海市电力公司 | Five-prevention forcible locking system used for preventing electrified hanging connection of transformer with grounding wire |
| CN110137021A (en) * | 2018-02-09 | 2019-08-16 | 工业连结与解决方案有限责任公司 | Voltage transformer system including transformer tractor |
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| CN103618388A (en) * | 2013-12-10 | 2014-03-05 | 国家电网公司 | Misoperation-preventive locking realizing system and method in transformation process of substation |
| CN203607277U (en) * | 2013-10-21 | 2014-05-21 | 沈阳华利能源设备制造有限公司 | Locking device of grounding switch used for high voltage switch cabinet |
| CN103956282A (en) * | 2014-04-02 | 2014-07-30 | 常熟永明电气有限公司 | FN12 load switch ring main unit mechanical interlock provided with turn-row cabinet |
| CN204045945U (en) * | 2014-09-19 | 2014-12-24 | 山东电力设备有限公司 | For the fool proof ground protection mechanism of dry-type transformer |
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| CN102231571A (en) * | 2011-07-12 | 2011-11-02 | 镇江市科捷电器有限公司 | Ground wire on-line monitor system |
| CN203607277U (en) * | 2013-10-21 | 2014-05-21 | 沈阳华利能源设备制造有限公司 | Locking device of grounding switch used for high voltage switch cabinet |
| CN103618388A (en) * | 2013-12-10 | 2014-03-05 | 国家电网公司 | Misoperation-preventive locking realizing system and method in transformation process of substation |
| CN103956282A (en) * | 2014-04-02 | 2014-07-30 | 常熟永明电气有限公司 | FN12 load switch ring main unit mechanical interlock provided with turn-row cabinet |
| CN204045945U (en) * | 2014-09-19 | 2014-12-24 | 山东电力设备有限公司 | For the fool proof ground protection mechanism of dry-type transformer |
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104569508A (en) * | 2014-12-29 | 2015-04-29 | 国家电网公司 | Anti-misoperation device of low voltage measuring cabinet |
| CN104569508B (en) * | 2014-12-29 | 2017-09-12 | 国家电网公司 | A kind of anti-misoperation apparatus of low-voltage metering cabinet |
| CN105184923A (en) * | 2015-08-21 | 2015-12-23 | 国网天津市电力公司 | Error locking preventing system capable of preventing idling operation and high voltage live display device |
| CN105436564A (en) * | 2015-12-26 | 2016-03-30 | 宁波鑫晟工具有限公司 | Electric drill with anti-misoperation function |
| CN105436557B (en) * | 2015-12-26 | 2017-12-08 | 宁波鑫晟工具有限公司 | A kind of Household electric drill |
| CN105436565A (en) * | 2015-12-26 | 2016-03-30 | 宁波鑫晟工具有限公司 | Electric hand drill |
| CN105436563A (en) * | 2015-12-26 | 2016-03-30 | 宁波鑫晟工具有限公司 | Anti-misoperation electric drill |
| CN105436559A (en) * | 2015-12-26 | 2016-03-30 | 宁波鑫晟工具有限公司 | Electric portable drill |
| CN105436562A (en) * | 2015-12-26 | 2016-03-30 | 宁波鑫晟工具有限公司 | Household hand-held electric drill |
| CN105436557A (en) * | 2015-12-26 | 2016-03-30 | 宁波鑫晟工具有限公司 | Domestic electric drill |
| CN105436561A (en) * | 2015-12-26 | 2016-03-30 | 宁波鑫晟工具有限公司 | Electric drill |
| CN105458335A (en) * | 2015-12-26 | 2016-04-06 | 宁波鑫晟工具有限公司 | Domestic handheld electric drill |
| CN105436556B (en) * | 2015-12-26 | 2017-12-08 | 宁波鑫晟工具有限公司 | A kind of electric hand drill |
| CN105436556A (en) * | 2015-12-26 | 2016-03-30 | 宁波鑫晟工具有限公司 | Hand-held electric drill |
| CN105436564B (en) * | 2015-12-26 | 2017-10-13 | 宁波鑫晟工具有限公司 | A kind of electric drill with anti-misoperation function |
| CN105458335B (en) * | 2015-12-26 | 2017-10-17 | 宁波鑫晟工具有限公司 | A kind of Household handheld electric drill |
| CN105436558A (en) * | 2015-12-26 | 2016-03-30 | 宁波鑫晟工具有限公司 | Electric drill with misoperation prevention function |
| CN105896351A (en) * | 2016-04-15 | 2016-08-24 | 国网上海市电力公司 | Five-prevention forcible locking system used for preventing electrified hanging connection of transformer with grounding wire |
| CN110137021A (en) * | 2018-02-09 | 2019-08-16 | 工业连结与解决方案有限责任公司 | Voltage transformer system including transformer tractor |
| CN110137021B (en) * | 2018-02-09 | 2024-05-03 | Abb瑞士股份有限公司 | Transformer system including a transformer tractor |
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| ASS | Succession or assignment of patent right |
Owner name: SHANDONG ELECTRICAL GROUP INTELLIGENT ELECTRICAL C Effective date: 20150326 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20150326 Address after: 250022 Shandong Province, Ji'nan city central machine West Road No. 3 Applicant after: Shandong Power Equipment Company Applicant after: Intelligent electric Co., Ltd of Shandong electrician electric group Applicant after: Jinan Power Supply Company, State Grid Shandong Electric Power Company Address before: 250022 Shandong Province, Ji'nan city central machine West Road No. 3 Applicant before: Shandong Power Equipment Company |
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20141210 |