CN206114795U - Arc light protecting device - Google Patents
Arc light protecting device Download PDFInfo
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- CN206114795U CN206114795U CN201621033278.XU CN201621033278U CN206114795U CN 206114795 U CN206114795 U CN 206114795U CN 201621033278 U CN201621033278 U CN 201621033278U CN 206114795 U CN206114795 U CN 206114795U
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Abstract
The utility model discloses an arc light protecting device, include: at least one electric current collector, at least one photoelectric sensor, at least one optical fiber sensor and microprocessor, current sensor for gather the current signal of current transformer output, photoelectric sensor for detect the light signal in high -pressure side and the transformer room, optical fiber sensor for detect the light signal of low tension side, microprocessor for receive the current signal of current sensor, photoelectric sensor transmission and the light signal of optical fiber sensor transmission, and with convert to behind received light signal filtering light signal clutter current signal, judge whether take place arc fault according to the current signal that obtains. Through using the utility model provides an arc light protecting device can the real -time supervision high -pressure side and the arc fault that probably appears of low tension side, solves box -type substation's arc light safety problem.
Description
Technical field
The utility model is related to arc fault detection and guard technology, more particularly to a kind of arc light protecting device.
Background technology
The middle voltage bus bar arclight produced when failure is short-circuited will cause great damage, pole to equipment and personnel
It is possible to cause chain accident.In the existing projects of relay protection standard of China, the system of 35kV and following electric pressure
It is general not configure special bus protection, but the standby overcurrent protection of dependence upper level element to cut off busbar short-circuit failure.
But, because transformer backup will not be with the cooperation of feeder line and busbar sectional izing switch, therefore trip protection time general setting valve
For 1s, the responsiveness can not meet bus-bar fault requirement, result in fault clearing time prolongation, increase the damage journey of equipment
Degree.
In addition, box-type substation great majority are all using environment out of doors, therefore have aerial temperature and humidity, foreign matter and enter etc. and ask
Topic, affects security.For example, when Medium Voltage Switchgear occur interior unit cell model when, electric arc will immediately in little indoor generation high pressure,
And hot gas are produced, while the high temperature of electric arc will make the fusing such as copper bar, contact material, insulating materials, evaporation.When pressure reaches
During certain value, hot gas and part fusing, the material of evaporation will spray together.This scorching hot mixture can cause personnel
With the burn of equipment.Although the interior unit cell model of box-type substation seldom occurs, very harmful, it is therefore necessary to take effectively
Measure, it is ensured that the safety of personnel and environment.
However, there is no the electric arc protection equipment that can be installed in box-type substation in current prior art, prevent
The measure of arc fault is mainly still adopted：That what is designed in mechanism is more closed, it is ensured that the cleannes inside case change, it is ensured that no
Mosquito toy is allowed to enter；Ensure safe operation using SF6 switch cubicles；Exposed portion is strengthened using the insulating sheath strengthened
The class of insulation divided, fault rate is preferably minimized.
It follows that the electric arc protection product cost in currently available technology is high, it is so special in box-type substation
Excessive limitation is subject in power supply environment, it is impossible to enough to realize most perfect defencive function in the range of cost is allowed, sense
The species of device is single, and adaptability is limited.
Utility model content
In view of this, the utility model provides a kind of arc light protecting device, such that it is able to real-time monitoring high-pressure side and low pressure
The arc fault that side is likely to occur, solves the arclight safety problem of box-type substation.
What the technical solution of the utility model was specifically realized in：
A kind of arc light protecting device, the device includes：At least one current sensor, at least one photoelectric sensor, extremely
A few Fibre Optical Sensor and microprocessor；
The current sensor, photoelectric sensor and Fibre Optical Sensor are connected with microprocessor；
The current sensor, for gathering the current signal of current transformer output, and by the current signal for collecting
It is sent to microprocessor；
The photoelectric sensor, for detecting high-pressure side and transformer room in optical signal, and by the optical signal for detecting
It is converted into being transferred to the microprocessor after current signal；
The Fibre Optical Sensor, for detecting the optical signal of low-pressure side, and the optical signal transmission for detecting low-pressure side is arrived
The microprocessor；
The microprocessor, for receiving current sensor, the current signal of photoelectric sensor transmission and Fibre Optical Sensor
The optical signal of device transmission, and received optical signal is filtered be converted into current signal after optical signal clutter；According to what is obtained
Current signal judges whether arc fault.
Preferably, also including in the microprocessor：Multichannel analog-digital converter；
The multichannel analog-digital converter is connected with the current sensor；
The multichannel analog-digital converter is used to for the analog signal that the current sensor is transmitted to be converted into data signal.
Preferably, the device is still further comprised：Communication module, user-machine interface module, digital quantity input module, number
Word amount output module and internal storage；
The communication module, user-machine interface module, digital quantity input module, digital output module and storage inside
Device is connected with microprocessor；
The communication module, for being communicated；
The user-machine interface module, for providing human-computer interaction interface；
The digital quantity input module, for realizing the acquisition function of digital quantity dry contact；
The digital output module, for realizing digital output function, exports dry contact；
The internal storage, for data storage.
Preferably, the photoelectric sensor includes：Photosensitive component, wave filter and power amplifier；
The photosensitive component, for gathering optical signal；
The wave filter, for being filtered process to the optical signal for collecting, filters noise and interference, and after filtering
Optical signal transmission give the power amplifier；
The power amplifier, for filtered optical signal to be amplified.
As above it is visible, in arc light protecting device of the present utility model, due to being provided with current sensor, photoelectric sensor
And Fibre Optical Sensor, therefore can simultaneously measure the optical signal of high-pressure side and low-pressure side, thus can with real-time monitoring high-pressure side and
The arc fault that low-pressure side is likely to occur；Further, since used Fibre Optical Sensor to gather the optical signal of low-pressure side, such that it is able to
Solve the problems, such as that low-pressure side complex circuit cannot accurately measure arc fault, solve the arclight safety problem of box-type substation.
Further, since photoelectric sensor and Fibre Optical Sensor can collect the optical signal of arc fault, current sensor can be gathered
To the current signal of arc fault；When there is arc fault, current break, therefore the arc light for passing through optical signal are necessarily accompanied with
The electric current criterion of criterion and current signal, can more accurately recognize arc fault, improve the success rate that arc fault judges,
Arc fault detection and protection suitable for high-speed railway, Line for Passenger Transportation and inter-city passenger rail box-type substation.
Description of the drawings
Fig. 1 is the structural representation of the arc light protecting device in the utility model embodiment.
Fig. 2 is the operation principle schematic diagram of the photoelectric sensor in the utility model embodiment.
Fig. 3 is the operation principle schematic diagram of the Fibre Optical Sensor in the utility model embodiment.
Schematic view of the mounting position of the Fig. 4 for the arc light protecting device in the utility model embodiment when actually used.
Specific embodiment
To make the purpose of this utility model, technical scheme and advantage become more apparent, develop simultaneously referring to the drawings enforcement
Example, further describes to the utility model.
A kind of arc light protecting device is present embodiments provided, is likely to occur such that it is able to real-time monitoring high-pressure side and low-pressure side
Arc fault, solve box-type substation arclight safety problem.
Fig. 1 is the structural representation of the arc light protecting device in the utility model embodiment.As shown in figure 1, this practicality is new
Arc light protecting device in type embodiment mainly includes：At least one current sensor 11, at least one photoelectric sensor 12, extremely
A few Fibre Optical Sensor 13 and microprocessor 14；
The current sensor 11, photoelectric sensor 12 and Fibre Optical Sensor 13 are connected with microprocessor 14；
The current sensor 11, for gathering the current signal of current transformer (CT) output, and by the electricity for collecting
Stream signal is sent to microprocessor；
The photoelectric sensor, for detecting high-pressure side and transformer room in optical signal, and by the optical signal for detecting
It is converted into being transferred to the microprocessor after current signal；
The Fibre Optical Sensor, for detecting the optical signal of low-pressure side, and the optical signal transmission for detecting low-pressure side is arrived
The microprocessor；
The microprocessor, for receiving current sensor, the current signal of photoelectric sensor transmission and Fibre Optical Sensor
The optical signal of device transmission, and received optical signal is filtered be converted into current signal after optical signal clutter；According to what is obtained
Current signal judges whether arc fault.
Preferably, in a specific embodiment of the present utility model, it is possible to use discrete fourier Algorithm Analysis electric current
The current signal of sensor input, the waveform signal in each cycle in current signal is carried out point by discrete fourier algorithm
Analysis, so as to draw frequency-region signal, by the signal extraction of 50HZ out, and then obtains current value.Due to when occur arc fault when,
The inevitable mutation with electric current, therefore the current value can be used as the assistant criteria of arc fault.
Preferably, in specific embodiment of the utility model, the microprocessor can be calculated using recursion mean filter
Method filters optical signal clutter from received optical signal, so that the optical signal change after filtering clutter is more stable, resists
Interference is higher, improves the success rate that arc fault judges.
In arc light protecting device of the present utility model, pass due to being provided with current sensor, photoelectric sensor and optical fiber
Sensor, therefore can simultaneously measure the optical signal of high-pressure side and low-pressure side, therefore can with real-time monitoring high-pressure side and low-pressure side
The arc fault that can occur；Further, since used Fibre Optical Sensor to gather the optical signal of low-pressure side, such that it is able to solve low pressure
Side complex circuit cannot accurately measure the problem of arc fault.Further, since photoelectric sensor and Fibre Optical Sensor can be gathered
To the optical signal of arc fault, current sensor can collect the current signal of arc fault；When there is arc fault, must
Current break, therefore the electric current criterion of the arc light criterion by optical signal and current signal are so accompanied by, can be more accurately
Identification arc fault, improves the success rate that arc fault judges.
In addition, preferably, in a specific embodiment of the present utility model, also including in the microprocessor：Multichannel
Modulus (AD) converter (not shown)；
The multichannel analog-digital converter is connected with the current sensor；
The multichannel analog-digital converter is used to for the analog signal that the current sensor is transmitted to be converted into data signal.
Preferably, in a specific embodiment of the present utility model, the arc light protecting device can also be wrapped further
Include：Communication module 15, man-machine interface (HMI) interface module 16, digital output module 17, digital quantity input module 18 and inside
Memory 19；
The communication module 15, user-machine interface module 16, digital quantity input module 17, the and of digital output module 18
Internal storage 19 is connected with microprocessor 14；
The communication module 15, for being communicated；More specifically, it is possible to use RS485 communications protocol realizes communication
Function；
The user-machine interface module 16, for providing human-computer interaction interface, consequently facilitating realizing man-machine friendship with user
Mutual communication function；
The digital quantity input module 18, for realizing the acquisition function of digital quantity dry contact；
The digital output module 17, for realizing digital output function, exports dry contact；
The internal storage 19, for data storage.
In addition, preferably, Fig. 2 is the principle schematic of the photoelectric sensor in the utility model embodiment.Such as Fig. 2 institutes
Show, in a specific embodiment of the present utility model, the photoelectric sensor 12 includes：Photosensitive component 121, wave filter
122 and power amplifier 123；
The photosensitive component 121, for gathering optical signal；
The wave filter 122, for being filtered process to the optical signal for collecting, filters noise and interference, and will filter
Optical signal transmission after ripple gives the power amplifier 123；
The power amplifier 123, for filtered optical signal to be amplified, to increase the transmittability of signal,
Conveniently carry out long range propagation, it is to avoid the decay during long range propagation.
Therefore, (now excitation light source can will be done from the point of view of arc fault) when there is arc fault to occur, the photoelectric sensing
Device can gather optical signal, and convert optical signal into and be transferred to after current signal microprocessor.
In addition, preferably, Fig. 3 is the operation principle schematic diagram of the Fibre Optical Sensor in the utility model embodiment.Such as Fig. 3
It is shown, in a specific embodiment of the present utility model, (now will can do from the point of view of arc fault when there is arc fault to occur
Excitation light source), high light signal will be produced, the high light signal enters into Fibre Optical Sensor through the clear skin of Fibre Optical Sensor
Inside, therefore the Fibre Optical Sensor can gather optical signal, and by optical signal transmission to microprocessor.
In addition, preferably, in a specific embodiment of the present utility model, the arc light protecting device in the utility model
The guide tracked mounting means of DIN can be adopted.In addition, the arc light protecting device in the utility model can adopt metal shell.
In addition, preferably, installation positions of the Fig. 4 for the arc light protecting device in the utility model embodiment when actually used
Put schematic diagram.As shown in figure 4, in a specific embodiment of the present utility model, can be in the box-type substation shown in Fig. 4
Multiple arc light protecting devices (at the round dot shown in Fig. 4) are installed.For example, the 10KV in cabinet (GIS) can be filled in gas
GIS cabinets, 0.4KV cabinets, 10KV high-voltage terminal cabinets, transformer room and low pressure to be clapped and install arc light protecting device at electric cabinet.
In summary, in arc light protecting device of the present utility model, due to being provided with current sensor, photoelectric sensor
And Fibre Optical Sensor, therefore can simultaneously measure the optical signal of high-pressure side and low-pressure side, thus can with real-time monitoring high-pressure side and
The arc fault that low-pressure side is likely to occur；Further, since used Fibre Optical Sensor to gather the optical signal of low-pressure side, such that it is able to
Solve the problems, such as that low-pressure side complex circuit cannot accurately measure arc fault, solve the arclight safety problem of box-type substation.
Further, since photoelectric sensor and Fibre Optical Sensor can collect the optical signal of arc fault, current sensor can be gathered
To the current signal of arc fault；When there is arc fault, current break, therefore the arc light for passing through optical signal are necessarily accompanied with
The electric current criterion of criterion and current signal, can more accurately recognize arc fault, improve the success rate that arc fault judges,
Arc fault detection and protection suitable for high-speed railway, Line for Passenger Transportation and inter-city passenger rail box-type substation.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
Within the spirit and principle of utility model, any modification, equivalent substitution and improvements done etc. should be included in the utility model
Within the scope of protection.
Claims (4)
1. a kind of arc light protecting device, it is characterised in that the device includes：At least one current sensor, at least one photoelectricity
Sensor, at least one Fibre Optical Sensor and microprocessor；
The current sensor, photoelectric sensor and Fibre Optical Sensor are connected with microprocessor；
The current sensor, for gathering the current signal of current transformer output, and the current signal for collecting is sent
To microprocessor；
The photoelectric sensor, for detecting high-pressure side and transformer room in optical signal, and by the optical signal for detecting conversion
The microprocessor is transferred to into after current signal；
The Fibre Optical Sensor, for detecting the optical signal of low-pressure side, and will detect the optical signal transmission of low-pressure side to described
Microprocessor；
The microprocessor, passes for receiving current sensor, the current signal of photoelectric sensor transmission and Fibre Optical Sensor
Defeated optical signal, and received optical signal is filtered be converted into current signal after optical signal clutter；According to the electric current for obtaining
Signal judges whether arc fault.
2. device according to claim 1, it is characterised in that also include in the microprocessor：Multichannel analog-digital converter；
The multichannel analog-digital converter is connected with the current sensor；
The multichannel analog-digital converter is used to for the analog signal that the current sensor is transmitted to be converted into data signal.
3. device according to claim 1, it is characterised in that the device is still further comprised：Communication module, man-machine interface
Interface module, digital quantity input module, digital output module and internal storage；
The communication module, user-machine interface module, digital quantity input module, digital output module and internal storage are equal
It is connected with microprocessor；
The communication module, for being communicated；
The user-machine interface module, for providing human-computer interaction interface；
The digital quantity input module, for realizing the acquisition function of digital quantity dry contact；
The digital output module, for realizing digital output function, exports dry contact；
The internal storage, for data storage.
4. device according to claim 1, it is characterised in that the photoelectric sensor includes：Photosensitive component, wave filter
And power amplifier；
The photosensitive component, for gathering optical signal；
The wave filter, for being filtered process to the optical signal for collecting, filters noise and interference, and by filtered light
Signal transmission gives the power amplifier；
The power amplifier, for filtered optical signal to be amplified.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621033278.XU CN206114795U (en) | 2016-08-31 | 2016-08-31 | Arc light protecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621033278.XU CN206114795U (en) | 2016-08-31 | 2016-08-31 | Arc light protecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206114795U true CN206114795U (en) | 2017-04-19 |
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ID=58518764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621033278.XU Active CN206114795U (en) | 2016-08-31 | 2016-08-31 | Arc light protecting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206114795U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106199294A (en) * | 2016-08-31 | 2016-12-07 | 中铁工程设计咨询集团有限公司 | A kind of arc light protecting device |
-
2016
- 2016-08-31 CN CN201621033278.XU patent/CN206114795U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106199294A (en) * | 2016-08-31 | 2016-12-07 | 中铁工程设计咨询集团有限公司 | A kind of arc light protecting device |
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