CN205753370U - A kind of arc light protecting system - Google Patents
A kind of arc light protecting system Download PDFInfo
- Publication number
- CN205753370U CN205753370U CN201620320277.7U CN201620320277U CN205753370U CN 205753370 U CN205753370 U CN 205753370U CN 201620320277 U CN201620320277 U CN 201620320277U CN 205753370 U CN205753370 U CN 205753370U
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- sensor
- arc light
- light protecting
- arc
- protecting system
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Abstract
A kind of arc light protecting system, including: Intelligence sensor, for detecting intensity of illumination, temperature and the toxic gas content in monitored area；Control unit, for the detection signal of this Intelligence sensor of real-time reception, and when the actual value of any one sensor detection signal in arc photosensor, temperature sensor and harmful gas sensor and/or amplitude of variation exceed threshold value, sends alarm signal.Arc light protecting system of the present utility model is integrated with temperature sensor and harmful gas sensor, adds the dimension of arc light protecting system monitoring, effectively reduces the harm occurring and causing of arc fault；Sensor is connected by optical fiber connected mode with protected host, and insulation is easily achieved, and capacity of resisting disturbance is strong, it is easy to install；Relay protective scheme uses configuration configuration mode, facilitates easy-to-use；Using integrated sensor, volume is little, easy for installation.
Description
Technical field
This utility model relates to technical field of safety protection, relates more specifically to a kind of arc light protecting system.
Background technology
Voltage switchgear is widely applied in middle low-pressure system switch cubicle, owing to equipment self reason, running environment etc. are each
The impact of the factor of kind, arc short-circuit Frequent Troubles.The arc fault that middle voltage bus bar occurs has spies such as quickly growing, destructive power is big
Point, its pressure wave can cause the serious consequences such as cabinet deformation, broken or blast, even burn and operate, bring disaster to transformator, finally send out
Generated big power distribution network accident, causes great casualties and economic loss.Therefore, it is necessary to it is female to propose a kind of special mesolow
Line protection system, for quickly excision middle voltage bus bar fault.
Arc light protecting device produces this feature of arc light when being broken down by detection inside switch cabinet, can open existing
Excise arc short-circuit fault within closing the electric arc tolerance time standard of cabinet, thus protect neighbouring staff to greatest extent, make
The controller switching equipments such as switching device are from damage.The mistrip of system can be caused, in order to improve system in view of extraneous light interference
Reliability, add the detection of over-current signal.Its action logic is for when being detected simultaneously by arc light and the growth of any one phase current
Time send trip signal, as shown in Figure 1.
The reason causing switch cubicle arc fault mainly has following 3 aspects:
Insulation aspect: the creep distance of insulant is not enough；Insulant material defect or aging；Insulant is affected by external force
Abrasion；Due to the reasons such as cable connector sectional area is inadequate, junction contacts is bad, bolt looseness cause insulant overheated, damage,
Cause earth fault or phase fault.
Exotic entrance aspect: toy access switch cabinet also can initiating failure；Maintainer's instrument is lost in switch cubicle
Deng anthropic factor.
System and natural disaster aspect: the overvoltage caused due to reasons such as Lightning disturbance, earthing mode changes.
According to statistics, most switch cubicle arc fault is all to develop into single-phase intermittent arcing over the ground again from insulation fault
To biphase or three-phase phase fault.Before arc fault occurs, when the temperature of bus or other component surface raises
When reaching certain value, also react the working condition of bus or other components and parts from side.Particularly electric connecting point send out
Heat is likely to result in the aging of bus, the reduction of insulant character or damage, causes ground connection or short circuit, thus causes bus event
Barrier.When insulant temperature raises simultaneously, toxic gas can be distributed, therefore in arc light protecting system, to inside switch cabinet temperature
The monitoring of degree and harmful gas is also very important.
Current domestic existing arc light protecting system can only be to circuit breaker trip when arc light occurs, it is impossible in fault
Premonition stage (insulant is overheated, shelf depreciation and flashover stage) sends alarm signal, reminds operation maintenance personnel to come row
Except fault into, and the monitoring of temperature and harmful gas is not brought the function of arc protection.
The commonly used natural optical sensor of arc photosensor of presently commercially available arc light protecting system, arc light criterion is according to biography
The light intensity size that sensor detects judges.Generally, the luminous sensitivity of arc protection is arranged the highest by producer, uses hands
The light that torch irradiates just can make it meet operation condition.Therefore, in the case of other non-bus-bar faults, sunlight or lightning etc. are strong
Light is easy for making it meet arc light operation condition and cause misoperation, makes bus dead electricity.
Utility model content
In view of this, the purpose of this utility model is to propose a kind of novel arc light protecting system, as the one of native system
Individual preferred embodiment, it is possible to use integrate the intelligent of double arc photosensor, temperature sensor and harmful gas sensor
Sensor, had both enhanced the reliability of system, had added again accident pre-warning function, effectively reduce arc fault generation and
The harm caused.
In order to reach above-mentioned purpose, this utility model provides a kind of arc light protecting system, including:
Intelligence sensor, described Intelligence sensor includes arc photosensor, temperature sensor and harmful gas sensing
Device, is respectively used to detect intensity of illumination, temperature and the toxic gas content in monitored area；
Control unit, for the detection signal of Intelligence sensor described in real-time reception, and when described arc photosensor, temperature
Actual value and/or the amplitude of variation of any one sensor detection signal in degree sensor and harmful gas sensor exceed threshold
During value, send alarm signal.
Wherein, described arc photosensor includes visual intensity sensor and/or ultraviolet ray intensity sensor.
As preferably, described arc photosensor includes visual intensity sensor and ultraviolet ray intensity sensor, described
Arc light protecting system is when configuration protection logic, and user can select described visual intensity sensor or ultraviolet ray intensity sensing
Device works independently, or works simultaneously.
As preferably, described ultraviolet ray intensity sensor is ultraviolet light sensing tube.
Wherein, described harmful gas sensor is electrochemistry co-af sensor.
Wherein, it is connected by optical fiber between described Intelligence sensor with described control unit.
Wherein, described arc light protecting system also includes current transformer, for entering the three-phase current signal of monitored area
Row sampling；
When the detected value of described arc photosensor and any one phase current mutual inductor all exceedes threshold value, described control unit
Trip signal is sent to chopper.
As preferably, described current transformer is connected with described control unit by signal conditioning circuit；Described signal is adjusted
Reason circuit is for being filtered and processing and amplifying the output signal of described current transformer.
Wherein, described arc light protecting system also includes man-machine module, for light intensity, temperature and/or harmful gas content
Display, parameter and definite value are arranged, the configuration of relay protective scheme, and the realization of at least one function in self-checking function；
As preferably, described man-machine module includes an input equipment and/or a display device, preferably one touch screen, enters
One step is preferably a capacitance touch screen；
As preferably, described man-machine module is by the control unit communication of 485 buses with described arc light protecting system；
As preferably, described man-machine module uses configuration software pattern, and relay protective scheme can be entered by operator easily
Row configuration.
Wherein, described arc light protecting system also includes switching value output module, for output protection trip signal and warning
Signal；
As preferably, described switching value output module includes that relay outlet and MOSFET export, and every kind of interface mode is joined
It is equipped with 5 interfaces.
As preferably, the logic of each interface of described switching value output module all can separate configurations, be used for tripping out
Mouth, failure protection or warning.
As preferably, when described switching value output module uses common relay outlet, arc protection is excellent for movement time
In 7ms.
As preferably, when described switching value output module uses MOSFET outlet, arc protection is better than movement time
1ms。
Understanding based on technique scheme, arc light protecting system of the present utility model has the advantage that and beneficial effect:
(1) have employed visible ray and the double arc photosensor pattern of ultraviolet light, decrease the probability of misoperation, enhance system
Reliability；
(2) it is integrated with temperature sensor and harmful gas sensor, adds the dimension of arc light protecting system monitoring, and logical
Cross the logical judgment to real time value and trend analysis, the insulation fault in switch cubicle is sent alarm signal, effectively reduces
The harm occurring and causing of arc fault；
(3) be integrated with signal conditioning circuit and CPU in sensor, the signal of four sensors through A/D change, calculate and
After packing, being given master control borad in the lump by optical fiber, the cable eliminating complexity connects；
(4) Intelligence sensor and protected host be connected by optical fiber connected mode, the power supply of Intelligence sensor by
Optical fiber energy supply, insulation is easily achieved, and capacity of resisting disturbance is strong, it is easy to install；
(5) using configurable fast interface and relay interface, each tripping operation node can be separately configured logic, is used for
Tripping operation outlet, failure protection or warning；
(6) relay protective scheme uses configuration configuration mode, facilitates easy-to-use；The structure of relay protective scheme and delay pattern all can be certainly
Row is arranged, and configuration mode has PC configuration mode and touch screen configuration mode；
(7) using integrated sensor, volume is little, easy for installation.
Accompanying drawing explanation
Fig. 1 is the arc protection schematic diagram of prior art；
Fig. 2 is the structure chart of arc light protecting system of the present utility model；
Fig. 3 is the logic chart of arc light protecting system of the present utility model；
Fig. 4 is the structured flowchart of Intelligence sensor of the present utility model；
Fig. 5 is the theory diagram of master control borad of the present utility model；
Fig. 6 is the block diagram of man-machine module of the present utility model.
Detailed description of the invention
For making the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with specific embodiment, and
Referring to the drawings, the utility model is described in further detail.
The utility model discloses a kind of novel arc light protecting system, this system is by using collection double arc photosensor, temperature
The Intelligence sensor that degree sensor and harmful gas sensor are integrated, had both enhanced the reliability of system, and had increased again and get over
Therefore warning function, effectively reduce the harm occurring and causing of arc fault.More specifically, as of the present utility model one
Individual preferred embodiment, arc light protecting system of the present utility model includes Intelligence sensor, current transformer, signal condition electricity
The parts such as road, switching value output module, master control borad, man-machine module, communication module and power circuit, wherein intelligence sensor and arc
Using multimode fibre to connect between light protection system, eliminate the electrical connection of complexity, its system construction drawing is as shown in Figure 2.
The work process of whole system is as follows: the numerical value of master control borad each sensor of real-time reception, when any one senses
The numerical value of device increases by a fairly big margin trend or when exceeding threshold value, system sends alarm signal.When natural optical sensor, ultraviolet light sensing
When the value of device summation current transformer all exceedes threshold value, send trip signal to chopper, excise fault.The logic chart of above-mentioned logic
As shown in Figure 3.
The function of Intelligence sensor is the concentration by detecting the light intensity of arc light, temperature value and harmful gas, Jing Guoyi
After series conversion, send the body of arc light protecting device to.The structured flowchart of Intelligence sensor as shown in Figure 4, this part by
Visible light sensor, UV sensor, temperature sensor, toxic gas sensor, signal conditioning circuit, CPU, interface circuit
Form with optical fiber energy supply circuit.Wherein ultraviolet light probe uses the R2868 ultraviolet light sensing tube of Japan's shore pine production as photosensitive unit
Part, harmful gas sensor uses Britain's electrochemistry co-af sensor；The filtering of signal conditioning circuit charge completion signal, put
The function such as big；Optical fiber energy supply circuit takes, by optical fiber, the various piece that energy circuit is intelligence sensor and provides electric energy.
The work process of whole sensor is as follows:
Visual intensity, ultraviolet ray intensity, temperature and toxic gas content are converted to faint electricity by 4 sensors respectively
Signal,
The faint signal of telecommunication, after signal conditioning circuit filtering, amplifying, is converted to the voltage signal of 0～5V,
Voltage signal sends into the analog input channel of CPU, after analog to digital conversion and revising, is converted into binary volume
Code, the sample frequency of analog quantity is 4000 times/second.
Binary coding is sent to the body of arc light protecting system after packing by optical fiber.
In order to strengthen the reliability of arc light detecting, this utility model have employed and includes that double arc lights of nature light and ultraviolet light pass
Sensor detection mode.When configuration protection logic, its mode of operation can be configured by user, both can select single arc light mould
Formula, it is also possible to select double arc mode.
Master control borad is the core of whole system, and its theory diagram is as shown in Figure 5.The function of master control borad includes: various signals
Calculating, analysis and record, the realization of Trip Logic, the realization of alarming logic and the communication of man-machine module and monitoring system
Communication etc..Master control borad receives from the binary signal of Intelligence sensor, decodes it, calculates, record, simultaneously to three-phase
Current signal carries out sampling, calculating, and then logic and definite value according to setting carry out logical judgment and trend analysis.When detecting
During arc fault, send trip signal, the sensor number of man-machine module display action and current value to chopper.When detecting
Current value, temperature and harmful gas content reach threshold value or value added too high time, start alarm relay, man-machine module shows
Warning message.
The function of man-machine module includes that light intensity, temperature and the display of harmful gas content, parameter and definite value are arranged, protection is patrolled
Volume configuration, self-checking function etc..Man-machine module uses 7 inches of capacitance touch screens, built-in CPU, uses (SuSE) Linux OS,
Body communication by 485 buses Yu arc light protecting system.Man-machine module uses configuration software pattern, and operator can be very
Configuring relay protective scheme easily, its structured flowchart is as shown in Figure 6.
Switching value output module provides two kinds of outlet modes: relay outlet and MOSFET export, and every kind of interface mode is joined
It is equipped with 5 interfaces.The logic of each Egress node all can may be used for tripping operation outlet, failure protection or report with separate configurations
Alert.Employing common relay exports, and arc protection is better than 7ms movement time.When using the arc protection action of MOSFET outlet
Between be better than 1ms.
All modules that power circuit is whole device provide power supply, the total 3 groups of power supply outputs being mutually isolated, and are respectively
+ 5V ,+24V and ± 12V, the wherein numerical portion of+5V supply master control borad ,+24V supplies the amount of opening the light input circuit, and ± 12V supplies
Signal conditioning circuit.
Particular embodiments described above, has carried out entering one to the purpose of this utility model, technical scheme and beneficial effect
Step describes in detail it should be understood that the foregoing is only specific embodiment of the utility model, is not limited to this reality
With novel, all within spirit of the present utility model and principle, any modification, equivalent substitution and improvement etc. done, all should comprise
Within protection domain of the present utility model.
Claims (18)
1. an arc light protecting system, it is characterised in that including:
Intelligence sensor, described Intelligence sensor includes arc photosensor, temperature sensor and harmful gas sensor, point
Yong Yu not detect the intensity of illumination in monitored area, temperature and toxic gas content；
Control unit, for the detection signal of Intelligence sensor described in real-time reception, and when described arc photosensor, temperature pass
Actual value and/or the amplitude of variation of any one sensor detection signal in sensor and harmful gas sensor exceed threshold value
Time, send alarm signal.
2. arc light protecting system as claimed in claim 1, it is characterised in that described arc photosensor includes that visual intensity passes
Sensor and/or ultraviolet ray intensity sensor.
3. arc light protecting system as claimed in claim 2, it is characterised in that described arc photosensor includes that visual intensity passes
Sensor and ultraviolet ray intensity sensor, described arc light protecting system when configuration protection logic, user can select described can
See that light intensity sensor or ultraviolet ray intensity sensor work independently, or work simultaneously.
4. arc light protecting system as claimed in claim 2, it is characterised in that described ultraviolet ray intensity sensor is that ultraviolet is photosensitive
Pipe.
5. arc light protecting system as claimed in claim 1, it is characterised in that described harmful gas sensor is electrochemistry co-
Af sensor.
6. arc light protecting system as claimed in claim 1, it is characterised in that described Intelligence sensor and described control unit
Between connected by optical fiber.
7. arc light protecting system as claimed in claim 1, it is characterised in that described arc light protecting system also includes Current Mutual Inductance
Device, for sampling to the three-phase current signal of monitored area；
When the detected value of described arc photosensor and any one phase current mutual inductor all exceedes threshold value, described control unit is to disconnected
Road device sends trip signal.
8. arc light protecting system as claimed in claim 7, it is characterised in that described current transformer passes through signal conditioning circuit
It is connected with described control unit；Described signal conditioning circuit is for being filtered the output signal of described current transformer and put
Big process.
9. arc light protecting system as claimed in claim 1, it is characterised in that described arc light protecting system also includes man-machine mould
Block, is arranged for light intensity, temperature and/or the display of harmful gas content, parameter and definite value, the configuration of relay protective scheme, and from
The realization of at least one function in checking functions.
10. arc light protecting system as claimed in claim 9, it is characterised in that described man-machine module include an input equipment and/
Or a display device.
11. arc light protecting systems as claimed in claim 10, it is characterised in that described man-machine module is a touch screen.
12. arc light protecting systems as claimed in claim 11, it is characterised in that described man-machine module is a capacitance touch screen.
13. arc light protecting systems as claimed in claim 9, it is characterised in that described man-machine module passes through 485 buses with described
The control unit communication of arc light protecting system.
14. arc light protecting systems as claimed in claim 9, it is characterised in that described man-machine module uses configuration software pattern,
Relay protective scheme can be configured by operator easily.
15. arc light protecting systems as claimed in claim 1, it is characterised in that described arc light protecting system also includes switching value
Output module, for output protection trip signal and alarm signal.
16. arc light protecting systems as claimed in claim 15, it is characterised in that described switching value output module includes relay
Outlet and MOSFET export, and every kind of interface mode is configured with 5 interfaces.
17. arc light protecting systems as claimed in claim 15, it is characterised in that each interface of described switching value output module
Logic all can separate configurations, be used for trip outlet, failure protection or warning.
18. arc light protecting systems as claimed in claim 15, it is characterised in that when described switching value output module uses common
During relay outlet, arc protection is better than 7ms movement time；
When described switching value output module uses MOSFET outlet, arc protection is better than 1ms movement time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620320277.7U CN205753370U (en) | 2016-04-15 | 2016-04-15 | A kind of arc light protecting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620320277.7U CN205753370U (en) | 2016-04-15 | 2016-04-15 | A kind of arc light protecting system |
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| Publication Number | Publication Date |
|---|---|
| CN205753370U true CN205753370U (en) | 2016-11-30 |
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ID=57374480
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| CN201620320277.7U Expired - Fee Related CN205753370U (en) | 2016-04-15 | 2016-04-15 | A kind of arc light protecting system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109085470A (en) * | 2018-08-03 | 2018-12-25 | 珠海知更电气有限公司 | A kind of arc light sensor device and equipment health status judgment method |
| CN110618337A (en) * | 2019-10-30 | 2019-12-27 | 云南恒协科技有限公司 | Arc light protection device calibrator |
| WO2020015277A1 (en) * | 2018-07-20 | 2020-01-23 | 国电南瑞科技股份有限公司 | Arc light fault identifying device and method based on panoramic information |
| CN111123054A (en) * | 2020-02-26 | 2020-05-08 | 国网湖南省电力有限公司 | Medium-low voltage switch cabinet, arc light protection method and device thereof, application method and sensor |
| CN114597861A (en) * | 2022-03-04 | 2022-06-07 | 江苏南能电气有限公司 | Box transformer arc light protection device of photovoltaic |
| CN116632789A (en) * | 2023-07-18 | 2023-08-22 | 无锡佳测科技有限公司 | Comprehensive online monitoring, analyzing and protecting method and system for switch cabinet |
-
2016
- 2016-04-15 CN CN201620320277.7U patent/CN205753370U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020015277A1 (en) * | 2018-07-20 | 2020-01-23 | 国电南瑞科技股份有限公司 | Arc light fault identifying device and method based on panoramic information |
| CN109085470A (en) * | 2018-08-03 | 2018-12-25 | 珠海知更电气有限公司 | A kind of arc light sensor device and equipment health status judgment method |
| CN109085470B (en) * | 2018-08-03 | 2021-12-21 | 珠海知更电气有限公司 | Arc light sensing device and equipment health condition judgment method |
| CN110618337A (en) * | 2019-10-30 | 2019-12-27 | 云南恒协科技有限公司 | Arc light protection device calibrator |
| CN111123054A (en) * | 2020-02-26 | 2020-05-08 | 国网湖南省电力有限公司 | Medium-low voltage switch cabinet, arc light protection method and device thereof, application method and sensor |
| CN111123054B (en) * | 2020-02-26 | 2023-03-03 | 国网湖南省电力有限公司 | Medium-low voltage switch cabinet, arc light protection method and device thereof, application method and sensor |
| CN114597861A (en) * | 2022-03-04 | 2022-06-07 | 江苏南能电气有限公司 | Box transformer arc light protection device of photovoltaic |
| CN116632789A (en) * | 2023-07-18 | 2023-08-22 | 无锡佳测科技有限公司 | Comprehensive online monitoring, analyzing and protecting method and system for switch cabinet |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161130 Termination date: 20170415 |
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| CF01 | Termination of patent right due to non-payment of annual fee |