CN104183108B - SF6Switch alarm and block signal radio transmitting device - Google Patents
SF6Switch alarm and block signal radio transmitting device Download PDFInfo
- Publication number
- CN104183108B CN104183108B CN201410459416.XA CN201410459416A CN104183108B CN 104183108 B CN104183108 B CN 104183108B CN 201410459416 A CN201410459416 A CN 201410459416A CN 104183108 B CN104183108 B CN 104183108B
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- switch
- low pressure
- alarm
- contact
- switch low
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- 238000004891 communication Methods 0.000 claims abstract description 40
- 230000011664 signaling Effects 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 abstract description 7
- 230000008901 benefit Effects 0.000 abstract description 5
- 238000010276 construction Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract description 2
- 229910018503 SF6 Inorganic materials 0.000 description 61
- 230000005540 biological transmission Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000013307 optical fiber Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 229960000909 sulfur hexafluoride Drugs 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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- Arrangements For Transmission Of Measured Signals (AREA)
- Alarm Systems (AREA)
Abstract
The invention discloses a kind of SF6Switch alarm and block signal radio transmitting device, including SF6Air density meter, two couples of SF6Switch low pressure alarm actuating contact, two couples of SF6Switch low pressure latch contact and power module, a pair of SF6Switch low pressure alarm actuating contact is connected with alarm, another to SF6Switch low pressure alarm actuating contact is connected with state-signal collection module, a pair of SF6Switch low pressure latch contact is connected with auxiliary reclay, another to SF6Switch low pressure latch contact is connected to state-signal collection module, and state-signal collection module is connected with wireless communication module, and wireless communication module is connected with system main website server；The present invention has the remarkable advantages such as simple, the small investment instant effect of communication modes, save construction input, the manpower and materials input for comparing the aspect such as more traditional communication network framework and passage maintenance is greatly reduced, overall labour productivity is improve, power switchgear automatization level is improved.
Description
Technical field
The present invention relates to a kind of signal wireless transmission device, more particularly to a kind of SF6The low pressure of switch is reported to the police and locking
Signal wireless transmission device.
Background technology
In power transmission technology field, it will usually use SF6Switch, it has life-span length, cut-offs outside the strong advantage of power, its
Outstanding advantages are easily to realize cut-offfing for three working positions (on-off and ground connection) and small current (inductance, electric capacity) the most, are resisted tight
Cruel environmental condition ability is strong, suitably in town and country medium voltage distribution network popularization and application.SF6Switch is the one kind with simple arc-control device
Device for switching, using SF6, used as insulation and arc-extinguishing medium, it can be used as closing and cut-off load current and overcurrent for gas
With can also close and cut-off nonloaded line, no-load transformer and capacitor bank, simple structure, low price.
As other on-load switches, SF6Switch in use, in order to ensure the security and stability for using,
Need special monitoring and alarming system, traditional SF6Monitoring switch warning system is mainly set by transmitter, system host, periphery
It is standby to wait three parts composition, when warning is monitored, needs to lay optical fiber or power carrier circuit, carry out distant signal biography
It is defeated, therefore SF6Monitoring switch warning system is often limited by the web influence duration such as the optical fiber of structure, power carrier, and investment is big
And communication channel maintenance difficulties are big, easily destroyed by external force, it is therefore desirable to periodically patrol, but as equipment is various, be difficult to again reach
The maintenance requirement periodically patrolled, causes SF6When there is low pressure failure in switch, it is difficult to timely find and take corresponding maintenance
Measure, therefore which is made using there is larger potential safety hazard.
The content of the invention
The technical problem to be solved is to provide that a kind of completion time of project is short, equipment investment is few, maintenance is simple, reports to the police
Rapid SF6Switch alarm and block signal radio transmitting device.
To solve above-mentioned technical problem, the technical scheme is that：SF6Switch alarm is wirelessly transferred dress with block signal
Put, including with SF6The SF of switch connection6Air density meter, the SF6Air density meter is provided with two couples of SF6Switch low pressure report
Alert contact and two couples of SF6Switch low pressure latch contact, the SF6Switch low pressure alarm actuating contact and the SF6Switch low pressure
Latch contact is connected to power module, SF described in one pair of which6Switch low pressure alarm actuating contact is connected with alarm, separately
SF described in a pair6Switch low pressure alarm actuating contact is connected with state-signal collection module, SF described in one pair of which6Switch low pressure locking
The normally-closed contact that contact portion has auxiliary reclay, the auxiliary reclay is connected on SF6On the operational power source circuit of switch, separately
SF described in a pair6Switch low pressure latch contact is connected to the state-signal collection module, and the state-signal collection module is connected with nothing
Line communication module, the wireless communication module are connected with system main website server, and the power module is respectively connecting to described distant
Letter acquisition module and the wireless communication module.
Used as preferred technical scheme, the state-signal collection module includes main frame, and Phototube Coupling electricity is provided with the main frame
Road, is additionally provided with the SIM with GPRS wireless communication functions and infrared communication unit in the main frame, the main frame sidepiece is provided with
RS-485 communication interface terminals.
Used as preferred technical scheme, the wireless communication module includes the public wireless communication networks of GPRS or/and CDMA.
Used as preferred technical scheme, the alarm includes alarm buzzer and alarm lamp.
Used as the improvement to above-mentioned technical proposal, the power module includes UPS uninterrupted power sources.
As a result of above-mentioned technical proposal, SF6Switch alarm and block signal radio transmitting device, including with SF6Switch
The SF of connection6Air density meter, the SF6Air density meter is provided with two couples of SF6Switch low pressure alarm actuating contact and two couples of SF6
Switch low pressure latch contact, the SF6Switch low pressure alarm actuating contact and the SF6Switch low pressure latch contact connects respectively
It is connected to power module, SF described in one pair of which6Switch low pressure alarm actuating contact is connected with alarm, another to the SF6Switch is low
Air pressure alarm contact portion has state-signal collection module, SF described in one pair of which6Switch low pressure latch contact be connected with it is middle after
Electrical equipment, the normally-closed contact of the auxiliary reclay are connected on SF6It is on the operational power source circuit of switch, another to the SF6Switch is low
Air pressure latch contact is connected to the state-signal collection module, and the state-signal collection module is connected with wireless communication module, the nothing
Line communication module is connected with system main website server, and the power module is respectively connecting to the state-signal collection module and the nothing
Line communication module；The invention has the beneficial effects as follows：SF6Air density meter real-time detection SF6The gas density of switch, when density compared with
When low, by one pair of which SF6Switch low pressure alarm actuating contact is connected alarm and is reported to the police, and one pair of which SF6Switch low gas
Pressure latch contact makes auxiliary reclay action, disconnects SF6The operational power source circuit of switch, it is ensured that the safety that power circuit is used
Property, and it is another to SF6Switch low pressure alarm actuating contact and another to SF6Switch low pressure latch contact respectively by warning message and
Low pressure gas locking information carries out data upload and puts on record；The present invention has fully met SF in terms of data exchange and communication transfer6Open
The needs reported to the police with block signal transmission are closed, with remarkable advantages such as simple, the small investment instant effects of communication modes, construction is saved
Input, the manpower and materials input for comparing the aspect such as more traditional communication network framework and passage maintenance are greatly reduced,
Overall labour productivity is improve, power switchgear automatization level is improved.
Description of the drawings
The following drawings is only intended in schematic illustration and explanation is done to the present invention, is not delimit the scope of the invention.Wherein：
Fig. 1 is the structured flowchart of the embodiment of the present invention.
Specific embodiment
With reference to the accompanying drawings and examples, the present invention is expanded on further.In the following detailed description, only by explanation
Mode describes some one exemplary embodiments of the present invention.Undoubtedly, one of ordinary skill in the art will recognize,
In the case of without departing from the spirit and scope of the present invention, can be being repaiied to described embodiment with a variety of modes
Just.Therefore, accompanying drawing and description are inherently illustrative, rather than for limiting scope of the claims.
As shown in figure 1, SF6Switch alarm and block signal radio transmitting device, including with SF6The SF of switch connection6Gas
Density meter, the SF6Air density meter is provided with two couples of SF6Switch low pressure alarm actuating contact and two couples of SF6Switch low pressure locking
Contact, the SF6Switch low pressure alarm actuating contact and the SF6Switch low pressure latch contact is connected to power module, its
In SF described in a pair6Switch low pressure alarm actuating contact is connected with alarm, and the alarm includes alarm buzzer and alarm lamp,
Field Force is reminded to make emergency disposal, it is another to the SF6Switch low pressure alarm actuating contact is connected with state-signal collection module, its
In SF described in a pair6Switch low pressure latch contact is connected with auxiliary reclay, the normally-closed contact series connection of the auxiliary reclay
In SF6On the operational power source circuit of switch, as the SF6When the air pressure of switch is too low, the SF6Switch low pressure latch contact
The auxiliary reclay is connected, the auxiliary reclay action, its normally-closed contact disconnect, and then are disconnected SF6The division of switch
Lock operating voltage, locking SF6Switch divide-shut brake；It is another to the SF6Switch low pressure latch contact is connected to the state-signal collection
Module.
The state-signal collection module includes main frame, is provided with photoelectric isolating circuit, is additionally provided with the main frame in the main frame
SIM with GPRS wireless communication functions and infrared communication unit, the main frame sidepiece are provided with RS-485 communication interface terminals.
The state-signal collection module is used for gathering SF6The low-voltage of switch is reported to the police and block signal, and above two signal is turned respectively
It is changed to digital signal, the state-signal collection module completes data exchange and the transmission of communication aspect, and supports live RS485, red
The communication modes such as outer communication, to facilitate on-site maintenance.
The state-signal collection module is connected with wireless communication module, and the wireless communication module includes GPRS or/and CDMA
Public wireless communication networks, the dialogue of the SIM being capable of achieving in its described state-signal collection module, complete SF6The low-voltage of switch
The transmission reported to the police with locking information.
The wireless communication module is connected with system main website server, and the power module is respectively connecting to the remote signalling and adopts
Collection module and the wireless communication module, the power module include UPS uninterrupted power sources, and the UPS uninterrupted power sources can be
Each relevant portion in the present embodiment provides the power of alterating and direct current of required different electric pressures.
In the present embodiment, SF6Air density meter can adopt Germany's WIKA sulfur hexafluoride gas density meters, with safety every
Quick-fried layer, is adapted to the very strong occasion of corrosiveness of the environment around, possesses high-strength bearing capacity and shock resistance durability；Middle relay
Device can adopt DY4N (220V) the type relay that Shanghai Science and Technology Ltd. of Wang Hong automatizatioies produces, the type relay contact to be suitable for
From 10mA to 10A, coil control voltage DC6V-120V, AC12V-240V (50/60Hz) can adopt multiple mounting modes to electric current,
The LED light outfit testing button function of distinguishing power of alterating and direct current is equipped with, is easy to debug, is safeguarded；Alarm buzzer can be adopted
The BC-8 type acoustic-optic buzzers that Zhong Shan Jon Tarrants electronics corporation produces, product inner core are set using advanced special IC
Meter, the features such as with strong antijamming capability, working stability, standard configuration LED flash long service life, with lightweight, waterproof, anti-
Macroseism, it is easy for installation the advantages of；State-signal collection module can adopt the YMD-DD32 type remote signal modules that upper swell latitude automatic control is produced, this
Module possesses logout store function, supports 32 tunnel remote signals, supports passive dry contact, and running voltage is alternating current-direct current
220V；Wireless communication module can adopt the public wireless telecommunications series of products of GPRS/CDMA that Shenzhen section land electronics is produced.
The course of work of the present embodiment is as follows：
Necessary to this device, component has SF6Switching gas density meter, auxiliary reclay, alarm, state-signal collection module,
Wireless communication module and system main website server.From SF6The two of switch control box or ring main unit, switchyard and substation PT cabinet
The exclusive lead of secondary voltage terminal, accesses the power supply terminal row of power module after ac-dc dual power supply switch, is power supply
Module provides the working power of alternating current 220V, and power module provides required different electric pressures for each related elements of the invention
Power of alterating and direct current.By a pair of SF6Switch low pressure alarm actuating contact seals in alarm loop, by a pair of SF6Switch low pressure is closed
Lock contact seals in intermediate relay circuit, and a pair of normally-closed contacts of auxiliary reclay are accessed SF6The breaking-closing operating of switch is returned
Road upper end, for locking SF6The divide-shut brake of switch；By another to SF6Switch low pressure latch contact and SF6Switch low pressure report
State-signal collection module is accessed by signal terminal row in alert contact, and state-signal collection module outfan connection wireless communication module is used for
Upload SF6The low-voltage that air density meter sends is reported to the police and block signal, can be built-in to arrange one in wireless communication module
SIM, and GPRS functions are opened, communicate convenient.
Description of the invention is given for the sake of example and description, and is not exhaustively or by the present invention
It is limited to disclosed form.Many modifications and variations are obvious for the ordinary skill in the art.Select and retouch
It is, for the principle and practical application that more preferably illustrate the present invention, and one of ordinary skill in the art is managed to state embodiment
The present invention is solved so as to design the various embodiments with various modifications for being suitable to special-purpose.
Claims (5)
1.SF6Switch alarm and block signal radio transmitting device, it is characterised in that：Including with SF6The SF of switch connection6Gas
Density meter, the SF6Air density meter is provided with two couples of SF6Switch low pressure alarm actuating contact and two couples of SF6Switch low pressure locking
Contact, the SF6Switch low pressure alarm actuating contact and the SF6Switch low pressure latch contact is connected to power module, its
In SF described in a pair6Switch low pressure alarm actuating contact is connected with alarm, another to the SF6Switch low pressure alarm actuating contact connects
It is connected to state-signal collection module, SF described in one pair of which6Switch low pressure latch contact is connected with auxiliary reclay, the centre after
The normally-closed contact of electrical equipment is connected on SF6It is on the operational power source circuit of switch, another to the SF6Switch low pressure latch contact connects
The state-signal collection module is connected to, the state-signal collection module is connected with wireless communication module, the wireless communication module connection
There is system main website server, the power module is respectively connecting to the state-signal collection module and the wireless communication module.
2. SF as claimed in claim 16Switch alarm and block signal radio transmitting device, it is characterised in that：The remote signalling is adopted
Collection module includes main frame, is provided with photoelectric isolating circuit, is additionally provided with GPRS wireless telecommunications work(in the main frame in the main frame
The SIM and infrared communication unit of energy, the main frame sidepiece are provided with RS-485 communication interface terminals.
3. SF as claimed in claim 16Switch alarm and block signal radio transmitting device, it is characterised in that：The channel radio
News module includes the public wireless communication networks of GPRS or/and CDMA.
4. SF as claimed in claim 16Switch alarm and block signal radio transmitting device, it is characterised in that：The alarm
Including alarm buzzer and alarm lamp.
5. the SF as described in claim 1,2,3 or 46Switch alarm and block signal radio transmitting device, it is characterised in that：Institute
Stating power module includes UPS uninterrupted power sources.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410459416.XA CN104183108B (en) | 2014-09-11 | 2014-09-11 | SF6Switch alarm and block signal radio transmitting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410459416.XA CN104183108B (en) | 2014-09-11 | 2014-09-11 | SF6Switch alarm and block signal radio transmitting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104183108A CN104183108A (en) | 2014-12-03 |
| CN104183108B true CN104183108B (en) | 2017-04-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410459416.XA Expired - Fee Related CN104183108B (en) | 2014-09-11 | 2014-09-11 | SF6Switch alarm and block signal radio transmitting device |
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| Country | Link |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107590967A (en) * | 2017-04-28 | 2018-01-16 | 国网山东省电力公司寿光市供电公司 | A kind of town and country looped network interval switchs condensation remote monitoring system |
| CN107658993B (en) * | 2017-10-10 | 2020-07-03 | 国网山东省电力公司昌邑市供电公司 | SF6 switch condensation signal wireless transmission device |
| CN107612143B (en) * | 2017-10-10 | 2020-07-03 | 国网山东省电力公司昌邑市供电公司 | Urban and rural looped network interval switch condensation remote monitoring system |
| CN109830937A (en) * | 2019-04-16 | 2019-05-31 | 吕琨璐 | The low automatic opening operation power supply device of SF6 breaker air pressure |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10232823B4 (en) * | 2002-04-29 | 2004-08-12 | Hydrotechnik Gmbh | Density monitor for SF6-insulated high or medium voltage systems |
| CN101122554A (en) * | 2007-09-11 | 2008-02-13 | 上海哈德电气技术有限公司 | SF6 gas density and micro-water integrated on-line monitor |
| CN201327464Y (en) * | 2008-11-15 | 2009-10-14 | 赤峰电业局 | Density and humidity network monitoring device for SF6 circuit breaker of power system |
| CN201892648U (en) * | 2010-07-29 | 2011-07-06 | 大连世有电力科技有限公司 | Wireless-transmission intelligent on-line monitoring system for density and micro-water of SF6 (sulfur hexafluoride) |
| CN202442833U (en) * | 2012-01-31 | 2012-09-19 | 河南省电力公司南阳供电公司 | Background monitoring system for gas pressure value of SF6 breaker |
| CN202585229U (en) * | 2012-05-08 | 2012-12-05 | 温州埃尔凯电器有限公司 | High-voltage sulfur hexafluoride load switch equipped with gas monitoring sensor |
| CN203191276U (en) * | 2013-02-26 | 2013-09-11 | 西安远顺电气有限责任公司 | SF6 gas density monitoring device |
-
2014
- 2014-09-11 CN CN201410459416.XA patent/CN104183108B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10232823B4 (en) * | 2002-04-29 | 2004-08-12 | Hydrotechnik Gmbh | Density monitor for SF6-insulated high or medium voltage systems |
| CN101122554A (en) * | 2007-09-11 | 2008-02-13 | 上海哈德电气技术有限公司 | SF6 gas density and micro-water integrated on-line monitor |
| CN201327464Y (en) * | 2008-11-15 | 2009-10-14 | 赤峰电业局 | Density and humidity network monitoring device for SF6 circuit breaker of power system |
| CN201892648U (en) * | 2010-07-29 | 2011-07-06 | 大连世有电力科技有限公司 | Wireless-transmission intelligent on-line monitoring system for density and micro-water of SF6 (sulfur hexafluoride) |
| CN202442833U (en) * | 2012-01-31 | 2012-09-19 | 河南省电力公司南阳供电公司 | Background monitoring system for gas pressure value of SF6 breaker |
| CN202585229U (en) * | 2012-05-08 | 2012-12-05 | 温州埃尔凯电器有限公司 | High-voltage sulfur hexafluoride load switch equipped with gas monitoring sensor |
| CN203191276U (en) * | 2013-02-26 | 2013-09-11 | 西安远顺电气有限责任公司 | SF6 gas density monitoring device |
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| Publication number | Publication date |
|---|---|
| CN104183108A (en) | 2014-12-03 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| CB03 | Change of inventor or designer information |
Inventor after: Liu Junchang Inventor after: Li Xiaohu Inventor after: Chang Jin Inventor after: Han Benchao Inventor after: Wang Zhiguo Inventor after: Zang Jinzhi Inventor after: Cao Lijie Inventor after: Wang Nan Inventor after: Su Juan Inventor after: Sun Haitao Inventor before: Liu Junchang Inventor before: Chang Jin |
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Effective date of registration: 20160810 Address after: 100031 Beijing, Xicheng District, west of No. 86 national Power Grid Corp, Applicant after: State Grid Corporation of China Applicant after: ANQIU POWER SUPPLY COMPANY, STATE GRID SHANDONG ELECTRIC POWER Co. Address before: 100031 Beijing, Xicheng District, west of No. 86 national Power Grid Corp, Applicant before: State Grid Corporation of China Applicant before: STATE GRID SHANDONG ANQIU POWER SUPPLY Co. |
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