CN108258663A - A kind of high-tension switch cabinet protection system to earth - Google Patents
A kind of high-tension switch cabinet protection system to earth Download PDFInfo
- Publication number
- CN108258663A CN108258663A CN201711476401.4A CN201711476401A CN108258663A CN 108258663 A CN108258663 A CN 108258663A CN 201711476401 A CN201711476401 A CN 201711476401A CN 108258663 A CN108258663 A CN 108258663A
- Authority
- CN
- China
- Prior art keywords
- tension switch
- switch cabinet
- controller
- detection device
- frequency
- 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.)
- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/30—Cabinet-type casings; Parts thereof or accessories therefor
- H02B1/32—Mounting of devices therein
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H1/00—Details of emergency protective circuit arrangements
- H02H1/0007—Details of emergency protective circuit arrangements concerning the detecting means
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/22—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for distribution gear, e.g. bus-bar systems; for switching devices
Abstract
The invention discloses kind of a high-tension switch cabinet protection system to earth; including detection device, signal transmitting apparatus and controller; detection device is set in high-tension switch cabinet; overvoltage or over current fault whether occur in high-tension switch cabinet for detecting; detection device is connected through signal transmitting apparatus with controller; signal transmitting apparatus is used to the testing result of detection device being sent to controller, and faulty line is handled by controller, and controller uses microcontroller.Whether the present invention is broken down by detection device to detect in high-tension switch cabinet, and in line failure, the cabinet door of high-tension switch cabinet is closed using electromagnetic lock in time, ensure safety, fault message is sent to controller using signal transmitting apparatus simultaneously, is disconnected by the corresponding circuit in controller control trouble point, so as to greatly reduce the time of staff's trouble-shooting point, fault outage range is reduced simultaneously, improves equipment operation rate.
Description
Technical field
The present invention relates to the high-tension switch cabinet field in electrical equipment more particularly to a kind of high-tension switch cabinet ground protection systems
System.
Background technology
5 kilovolts or 10 kilovolts of high-tension switch cabinets generally using isolated neutral system, in system single-phase earthing occurs therefore
During barrier, the voltage of failure mutually relatively is zero, and the voltage of non-faulting mutually relatively is line voltage, and residual voltage occurs in power grid,
When carrying out ground protection using residual voltage, system jam can only be known, and it is which circuit occurs to be unable to accurate judgement
Ground connection, and the method that failure route is determined using the method operated a switch successively, can cause whole line outage, seriously affect production
With the life of resident.
Invention content
The purpose of the present invention is to provide a kind of high-tension switch cabinet protection system to earth, can in line failure and
When fault message is sent to controller, disconnected by the corresponding circuit in controller control trouble point, reduce search trouble point when
Between, power failure range is reduced, improves equipment operation rate.
A kind of high-tension switch cabinet protection system to earth, including detection device, signal transmitting apparatus and controller, the detection
Device is set in high-tension switch cabinet, for detecting overvoltage or over current fault whether occur in high-tension switch cabinet, detection device warp
Signal transmitting apparatus is connected with controller, and signal transmitting apparatus is used to the testing result of detection device being sent to controller, by
Controller handles faulty line.
Preferably, the detection device includes the voltage sensor and comparator that set gradually, voltage sensor and compares
It there are three device is equal, is respectively arranged on the three-phase electricity crimping in high-tension switch cabinet, the output terminal of each comparator is respectively through resistance
It is grounded with diode, the output terminal of each comparator is also respectively connected with electromagnetic lock, and electromagnetic lock is set to the cabinet door of high-tension switch cabinet
On, for breaking down in high-tension switch cabinet when closes cabinet door.
Preferably, the diode uses light emitting diode, and light emitting diode is set to outside high-tension switch cabinet, in height
It compresses switch and sends out alarm when breaking down in cabinet.
Preferably, the signal transmitting apparatus include signal projector and signal receiver, the signal projector with than
Output terminal compared with device is connected, and signal projector includes the carrier oscillator being sequentially connected, phase converter, the first Multistage Frequency Multiplexer, mixes
Frequency device, the second Multistage Frequency Multiplexer and power amplifier, the output terminal of power amplifier are connected with transmitting antenna, the phase converter
Input terminal is also associated with integrator, the input terminal connection preemphasis circuit of integrator, and the input terminal of the frequency mixer is also associated with
Changeable frequency local oscillator；
The signal receiver includes the reception antenna, high-frequency amplifier, frequency mixer, intermediate frequency amplifier, the amplitude limit label that are sequentially connected
Frequency and low-frequency amplifier, the output terminal of low-frequency amplifier are connected with controller, and the input terminal of the frequency mixer is also connected with local oscillator.
Preferably, the controller uses microcontroller.
Whether the present invention is broken down by detection device to detect in high-tension switch cabinet, and in line failure,
The cabinet door of high-tension switch cabinet is closed using electromagnetic lock in time, it is ensured that safety, while sent out fault message using signal transmitting apparatus
It send to controller, is disconnected by the corresponding circuit in controller control trouble point, so as to greatly reduce staff's trouble-shooting
The time of point, while fault outage range is reduced, improve equipment operation rate.The configuration of the present invention is simple, it is easy to operate, it can not only
Cabinet door is closed when breaking down in high-tension switch cabinet in time, prevent someone close and caused by injury, while can rapidly by
Fault message is sent to controller, makes safeguard measure in time by controller, action is safe and reliable.
Description of the drawings
Fig. 1 is the circuit diagram of detection device of the present invention；
Fig. 2 is the functional block diagram of signal projector of the present invention；
Fig. 3 is the functional block diagram of signal receiver of the present invention.
Specific embodiment
Technical scheme of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described embodiment
Only section Example of the invention, instead of all the embodiments.Based on the embodiments of the present invention, the common skill in this field
Other all embodiments that art personnel are obtained under the premise of creative work is not made belong to the protection model of the present invention
It encloses.
As shown in Figure 1 to Figure 3, a kind of high-tension switch cabinet protection system to earth of the present invention, including detection device, letter
Whether number transmitting device and controller, detection device are set in high-tension switch cabinet, occurred for detecting in high-tension switch cabinet
Pressure or over current fault, detection device are connected through signal transmitting apparatus with controller, and signal transmitting apparatus is used for detection device
Testing result is sent to controller, and faulty line is handled by controller, and controller uses microcontroller.
Detection device includes the voltage sensor and comparator that set gradually, voltage sensor and comparator it is equal there are three,
It is respectively arranged on the three-phase electricity crimping in high-tension switch cabinet, the output terminal of each comparator is respectively through resistance R1 and diode D1
Ground connection, the output terminal of each comparator is also respectively connected with electromagnetic lock, and electromagnetic lock is set in the cabinet door of high-tension switch cabinet, for
Cabinet door is closed when breaking down in high-tension switch cabinet, diode D1 uses light emitting diode, and light emitting diode is set to high pressure
Outside switchgear, for breaking down in high-tension switch cabinet when sends out alarm.
Signal transmitting apparatus includes the output terminal of signal projector and signal receiver, the signal projector and comparator
It is connected, signal projector includes the carrier oscillator being sequentially connected, phase converter, the first Multistage Frequency Multiplexer, frequency mixer, the second multistage
Frequency multiplier and power amplifier, the output terminal of power amplifier are connected with transmitting antenna, and the input terminal of phase converter is also associated with accumulating
Divide device, the input terminal connection preemphasis circuit of integrator, the input terminal of the frequency mixer is also associated with changeable frequency local oscillator；
Signal receiver include be sequentially connected reception antenna, high-frequency amplifier, frequency mixer, intermediate frequency amplifier, amplitude limit label frequency and
Low-frequency amplifier, the output terminal of low-frequency amplifier are connected with controller, and the input terminal of frequency mixer is also connected with local oscillator.
The present invention at work, is detected the three-phase voltage in high-tension switch cabinet by voltage sensor, is sent out in circuit
During life failure, the timely cabinet door that high-tension switch cabinet is closed using electromagnetic lock, it is ensured that safety, while signal transmitting apparatus is utilized by event
Barrier information is sent to controller, is disconnected by the corresponding circuit in controller control trouble point, so as to greatly reduce staff
The time of trouble-shooting point, while fault outage range is reduced, improve equipment operation rate.
Claims (5)
1. a kind of high-tension switch cabinet protection system to earth, it is characterised in that：Including detection device, signal transmitting apparatus and control
Device, the detection device are set in high-tension switch cabinet, and overvoltage or over current fault whether occur in high-tension switch cabinet for detecting,
Detection device is connected through signal transmitting apparatus with controller, and signal transmitting apparatus is used to the testing result of detection device being sent to
Controller is handled faulty line by controller.
2. a kind of high-tension switch cabinet protection system to earth as described in claim 1, it is characterised in that：The detection device includes
The voltage sensor and comparator set gradually, voltage sensor and comparator it is equal there are three, be respectively arranged at high-tension switch cabinet
On interior three-phase electricity crimping, the output terminal of each comparator is grounded respectively through resistance and diode, the output terminal of each comparator
Electromagnetic lock is also respectively connected with, electromagnetic lock is set in the cabinet door of high-tension switch cabinet, during for breaking down in high-tension switch cabinet
Cabinet door is closed.
3. a kind of high-tension switch cabinet protection system to earth as claimed in claim 2, it is characterised in that：The diode is using hair
Optical diode, light emitting diode are set to outside high-tension switch cabinet, and for breaking down in high-tension switch cabinet when sends out alarm.
4. a kind of high-tension switch cabinet protection system to earth as claimed in claim 2, it is characterised in that：The signal transmitting apparatus
Including signal projector and signal receiver, the signal projector is connected with the output terminal of comparator, and signal projector includes
Carrier oscillator, phase converter, the first Multistage Frequency Multiplexer, frequency mixer, the second Multistage Frequency Multiplexer and the power amplifier being sequentially connected,
The output terminal of power amplifier is connected with transmitting antenna, and the input terminal of the phase converter is also associated with integrator, integrator it is defeated
Enter end connection preemphasis circuit, the input terminal of the frequency mixer is also associated with changeable frequency local oscillator；
The signal receiver includes the reception antenna, high-frequency amplifier, frequency mixer, intermediate frequency amplifier, the amplitude limit label that are sequentially connected
Frequency and low-frequency amplifier, the output terminal of low-frequency amplifier are connected with controller, and the input terminal of the frequency mixer is also connected with local oscillator.
5. a kind of high-tension switch cabinet protection system to earth as claimed in claim 4, it is characterised in that：The controller is using single
Piece machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711476401.4A CN108258663A (en) | 2017-12-29 | 2017-12-29 | A kind of high-tension switch cabinet protection system to earth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711476401.4A CN108258663A (en) | 2017-12-29 | 2017-12-29 | A kind of high-tension switch cabinet protection system to earth |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108258663A true CN108258663A (en) | 2018-07-06 |
Family
ID=62725301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711476401.4A Withdrawn CN108258663A (en) | 2017-12-29 | 2017-12-29 | A kind of high-tension switch cabinet protection system to earth |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108258663A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009131048A (en) * | 2007-11-22 | 2009-06-11 | Mitsubishi Electric Corp | Starter system for plural power generators and switching board for a plurality of power generators |
| CN101902076A (en) * | 2010-07-08 | 2010-12-01 | 南京康尼科技实业有限公司 | Switch cabinet status display controller |
| CN102222886A (en) * | 2011-06-23 | 2011-10-19 | 周庆生 | Protection device and method for high-voltage vacuum power distribution equipment for mining |
| CN202094616U (en) * | 2011-06-23 | 2011-12-28 | 周庆生 | Protective device for mining high voltage vacuum distribution device |
| CN102738778A (en) * | 2012-06-30 | 2012-10-17 | 常州市华贤五金厂 | Protection device and method of switch cabinet |
| CN202772570U (en) * | 2012-09-06 | 2013-03-06 | 韶关市擎能设计有限公司 | Intelligent grounding fault integration protection system in voltage arc extinguishing method |
| CN204595965U (en) * | 2015-05-06 | 2015-08-26 | 常熟理工学院 | Electromagnetic type identifies and control door access control system automatically |
-
2017
- 2017-12-29 CN CN201711476401.4A patent/CN108258663A/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009131048A (en) * | 2007-11-22 | 2009-06-11 | Mitsubishi Electric Corp | Starter system for plural power generators and switching board for a plurality of power generators |
| CN101902076A (en) * | 2010-07-08 | 2010-12-01 | 南京康尼科技实业有限公司 | Switch cabinet status display controller |
| CN102222886A (en) * | 2011-06-23 | 2011-10-19 | 周庆生 | Protection device and method for high-voltage vacuum power distribution equipment for mining |
| CN202094616U (en) * | 2011-06-23 | 2011-12-28 | 周庆生 | Protective device for mining high voltage vacuum distribution device |
| CN102738778A (en) * | 2012-06-30 | 2012-10-17 | 常州市华贤五金厂 | Protection device and method of switch cabinet |
| CN202772570U (en) * | 2012-09-06 | 2013-03-06 | 韶关市擎能设计有限公司 | Intelligent grounding fault integration protection system in voltage arc extinguishing method |
| CN204595965U (en) * | 2015-05-06 | 2015-08-26 | 常熟理工学院 | Electromagnetic type identifies and control door access control system automatically |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180706 |
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| WW01 | Invention patent application withdrawn after publication |