CN217406183U - Intelligent electric arc light protection system - Google Patents
Intelligent electric arc light protection system Download PDFInfo
- Publication number
- CN217406183U CN217406183U CN202220941065.6U CN202220941065U CN217406183U CN 217406183 U CN217406183 U CN 217406183U CN 202220941065 U CN202220941065 U CN 202220941065U CN 217406183 U CN217406183 U CN 217406183U
- Authority
- CN
- China
- Prior art keywords
- arc
- unit
- detection unit
- arc light
- signals
- 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.)
- Active
Links
- 238000010891 electric arc Methods 0.000 title claims abstract description 16
- 238000001514 detection method Methods 0.000 claims abstract description 49
- 238000006243 chemical reaction Methods 0.000 claims abstract description 17
- 230000008054 signal transmission Effects 0.000 claims abstract description 12
- 239000013307 optical fiber Substances 0.000 claims abstract description 7
- 239000000523 sample Substances 0.000 claims description 21
- 230000003287 optical effect Effects 0.000 claims description 15
- 238000004891 communication Methods 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 4
- 238000000638 solvent extraction Methods 0.000 claims description 3
- 230000003595 spectral effect Effects 0.000 claims description 3
- 230000006378 damage Effects 0.000 abstract description 7
- 230000008030 elimination Effects 0.000 abstract description 4
- 238000003379 elimination reaction Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 7
- 230000009471 action Effects 0.000 description 5
- 238000004458 analytical method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000012545 processing Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000010183 spectrum analysis Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
Images
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model relates to a high tension switchgear technical field especially relates to an intelligent electric arc light protection system, and this electric arc light protection system includes: the arc light detection unit is used for detecting the suddenly increased light intensity of the high-voltage switch cabinet when an arc light fault occurs; the current detection unit is used for detecting current increment appearing in the high-voltage switch cabinet; the photoelectric emission unit establishes signal transmission with the arc light detection unit and the current detection unit respectively, the photoelectric emission unit is used for receiving arc light fault signals and fault current signals sent by the arc light detection unit and the current detection unit respectively, and the photoelectric reception unit and the photoelectric emission unit establish signal transmission through optical fibers. The utility model discloses reached the purpose of quick disconnection high tension switchgear total brake elimination arc light, can make the reaction rapidly when the arc light appears in the high tension switchgear to avoid the arc light to cause the harm to the high tension switchgear, guaranteed the safe operation of whole electric wire netting equipment.
Description
Technical Field
The utility model relates to a high tension switchgear technical field especially relates to an intelligent electric arc light protection system.
Background
In the short-circuit fault of the medium-voltage bus and the low-voltage bus, key equipment and personnel injury are mainly caused by arc light, however, most of the existing medium-voltage and low-voltage buses are not provided with rapid bus protection, and only adopt a simple arc extinction device and transformer backup protection. The protection is low in intelligence and low in action speed, the fault removal time is usually prolonged, the damage degree of equipment is further expanded, even a vicious accident of 'fire burning and continuous operation' can be caused, the transformer is impacted to run once, and the safe running of the whole power grid is influenced.
And the power of arc light can reach up to 100MW taking place in the cubical switchboard, and the produced energy of electric arc burning is exponential multiplication with the burning time and the short-circuit current change value of electric arc and grows, and high temperature, the high pressure that the burning produced will destroy components and parts, copper bar and the cubical switchboard of being listed as gradually, and high bright arc light and toxic gas also have huge injury to the human body.
SUMMERY OF THE UTILITY MODEL
The utility model provides a not enough to prior art, the utility model provides an intelligent electric arc light protection system has reached the purpose of the total floodgate of fast cutout high tension switchgear elimination arc light, can make the reaction rapidly when the arc light appears in the high tension switchgear to avoid the arc light to cause the harm to the high tension switchgear, guarantee the safe operation of whole electric wire netting equipment.
In order to solve the technical problem, the utility model provides a following technical scheme: an intelligent arc light protection system, comprising:
the arc light detection unit is used for detecting the suddenly increased light intensity of the high-voltage switch cabinet when an arc light fault occurs;
the current detection unit is used for detecting current increment appearing in the high-voltage switch cabinet;
the photoelectric emission unit is respectively in signal transmission with the arc light detection unit and the current detection unit and is used for receiving arc light fault signals and fault current signals sent by the arc light detection unit and the current detection unit;
the photoelectric receiving unit is used for receiving fault signals sent by the photoelectric transmitting unit, converting optical signals detected by the arc light detecting unit into voltage signals and amplifying and filtering the voltage signals;
the main control unit is used for detecting and analyzing arc fault signals and fault current signals and comprehensively analyzing and judging the two signals.
Further, the arc light protection system further comprises: the breaker failure protection unit is in signal transmission with the photoelectric emission unit and is arranged in the high-voltage switch cabinet and used for executing a tripping command.
Further, the arc light protection system further comprises:
the early warning module is in communication connection with the main control unit and is used for early warning arc faults existing in the high-voltage switch cabinet;
and the display module is in communication connection with the main control unit and is used for displaying arc fault information of the high-voltage switch cabinet.
Further, the arc detection unit adopts an arc probe for detecting ultraviolet light, the current detection unit adopts a Hall current sensor, and the main control unit adopts a microprocessor with the model STM32F 103.
Furthermore, the arc probes are multiple and arranged at any position in the high-voltage switch cabinet, the arrangement positions of the arc probes are used for protecting the high-voltage switch cabinet in a partitioned mode, the arc probes are used for collecting specific spectral information in the arc signals, autonomously completing conversion between the optical signals and the electric signals, outputting 4-20mA current signals and sending the current signals to the photoelectric emission unit.
Furthermore, the main control unit is embedded and installed on a secondary control door panel of a feeder cabinet or a feeder cabinet in the high-voltage switch cabinet.
Furthermore, a temperature detection unit is further arranged in the high-voltage switch cabinet, and the temperature detection unit adopts an infrared temperature sensor with the model number of TPS 534.
Borrow by above-mentioned technical scheme, the utility model provides an intelligent electric arc light protection system possesses following beneficial effect at least:
1. the utility model discloses a two criterion principles of arc light detection and overcurrent detection have characteristics such as protection action speed is fast, the reliability is high, and arc light protection action mainly is according to two different factors that the trouble produced: arc light and current increment send the tripping operation order when detecting arc light and current increment simultaneously, excision arc light branch road, consequently reached the purpose of quick disconnection high tension switchgear main brake elimination arc light, can make a response rapidly when the arc light appears in the high tension switchgear to avoid the arc light to cause the harm to the high tension switchgear, guarantee the safe operation of whole electric wire netting equipment.
2. The utility model discloses the arc light probe that adopts can place any position in high tension switchgear, can realize the function of protection subregion according to arc light probe's actual physical position to show the position that the trouble took place on display module, the processing time of the reducible outage of this function resumes the power supply function fast.
3. The utility model discloses a main control unit carries out analysis processes, sends early warning signal after judging to two kinds of signals, and output control signal transmits the circuit breaker failure protection unit through photoelectric receiving unit and photoemissive cell simultaneously, through circuit breaker failure protection unit and execution tripping operation order, carries out real-time effectual protection to the cubical switchboard.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
fig. 1 is a schematic block diagram of a photoelectric protection system of the present invention;
fig. 2 is a schematic block diagram of the photoelectric protection system of the present invention;
FIG. 3 is a schematic block diagram of the electrical and optical signal conversion of the present invention;
fig. 4 is a schematic block diagram of the optical-electrical signal conversion of the present invention.
In the figure: 100. an arc light detection unit; 200. a current detection unit; 300. a photo-emission unit; 400. a photoelectric receiving unit; 500. a main control unit; 600. a circuit breaker failure protection unit; 700. an early warning module; 800. and a display module.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.
Fig. 1-4 illustrate an embodiment of the present invention: an intelligent arc light protection system, comprising: the arc detection unit 100 is used for detecting the light intensity suddenly increased when an arc fault occurs in the high-voltage switch cabinet, the current detection unit 200 is used for detecting the current increment appearing in the high-voltage switch cabinet, the photoelectric emission unit 300 establishes signal transmission with the arc detection unit 100 and the current detection unit 200 respectively, and the photoelectric emission unit 300 is used for receiving an arc fault signal and a fault current signal which are respectively emitted by the arc detection unit 100 and the current detection unit 200.
Principle analysis of the arc detecting unit 100:
by analyzing the electric arc light spectrum, the ultraviolet light wave band of 300-450 nm and the visible light wave band of 450-800 nm are the energy accumulation places of the electric arc light, and more than 80% of the electric arc light is ultraviolet light.
If the traditional optical sensor is adopted, the sudden light sources are more in daily life, and the light sources are possibly interfered to cause misoperation of the arc protection device. The special ultraviolet arc probe can avoid the instability caused by visible light in the environment.
After an arc light signal is generated, the sensor converts the detected light signal into an electric signal and transmits the electric signal to the photoelectric transceiver, and the conversion relation is as follows:
E＝hv
wherein: h is Planck constant, h is 6.626 × 10 -34 (J · s); v is the frequency(s) of the light -1 )。
Wherein: m is the electron mass; v. of 0 Is the electron escape velocity.
The photoelectric conversion efficiency is:
the photoelectric efficiency IPCE is related to the light capture efficiency lhe (l), the electron injection quantum efficiency finj and the collection efficiency fc of the injected electrons on the rear contact surface of the nanocrystalline film and the conductive glass, and the formula is as follows:
IPCE(1)＝LHE(1)*finj*fc＝LHE(1)*F(1)
according to the arc light spectrum analysis, more than 80% of arc light is ultraviolet light, most of light sources collected by the traditional arc light sensor mainly comprise visible light, and more sudden light sources are provided in daily life, such as light generated by lightning, flash lamps and the like. Interference light sources can be collected by the arc light collecting sensor based on the traditional visible light, so that the arc light protection device is promoted to malfunction. Through calculation and analysis, the ultraviolet arc light probe can avoid the instability caused by visible light in the environment, the intensity of the collected light signal is high, and the accuracy of the converted electric signal is high.
Analyzing an overcurrent signal detection principle:
the Hall current-voltage sensor is an element for detecting current, which is made according to Hall principle, when the current passes through the wire, a magnetic field is generated around the wire, the size of the magnetic field is in direct proportion to the current passing through the wire, a Hall device is placed in the magnetic field B, the current generated in the circuit is provided for two ends of the Hall device, the other two ends of the Hall device can output a Hall voltage to input the current, and the Hall voltage and the output voltage U are respectively connected with the other two ends of the Hall device h To satisfy the following equation:
in the formula: k is h Is the Hall coefficient;
is the angle between the current and the magnetic field.
The Hall device is a component which is made of semiconductor materials and can convert magnetism and electricity. The input end of the Hall device is provided with control current, the magnetic field passes through one surface of the Hall device sensing the magnetic field, and the output end of the Hall device generates Hall potential V h 。
Hall potential V H Magnitude of (D) and control current I C The magnetic flux density B is as follows:
from theoretical analysis it can be derived: the current sensor is subjected to electric-magnetic-electric insulation isolation conversion, the measurement of the magnitude of a current signal in the high-voltage switch cabinet can be reflected by the measurement of the magnitude of the Hall potential, and the measurement precision is high. The Hall current sensor can be used for detecting the current signal inside the high-voltage switch cabinet.
Electro-optical and photoelectric signal conversion principle:
the optical fiber transmission signal has the advantages of wide transmission frequency band, large communication capacity, low loss, strong interference resistance and the like. And a photoelectric transceiver is adopted in the optical fiber transmission process. The photoelectric transceiver consists of a photoelectric medium conversion chip, an optical signal interface and an electric signal interface, wherein the photoelectric medium conversion chip OEMc is a core control of the device and has strong compatibility. The photoelectric conversion circuit uniformly converts the collected electric signals into optical signals, the photoelectric emitting device emits the optical signals, the optical signals are transmitted through optical fibers, the optical signals are converted into the electric signals through the photoelectric medium conversion circuit after passing through the receiving device, and the electric signals are transmitted to the core control processing circuit through amplification and filtering. Referring to fig. 3 and 4, schematic diagrams of electro-optical and electro-optical signal conversion are shown.
The photoelectric receiving unit 400 and the photoelectric emitting unit 300 establish signal transmission through optical fibers, and the photoelectric receiving unit 400 is used for receiving fault signals emitted by the photoelectric emitting unit 300, converting optical signals detected by the arc light detecting unit 100 into voltage signals, and amplifying and filtering the voltage signals; the main control unit 500 establishes signal transmission with the photoelectric receiving unit 400, and the main control unit 500 is used for detecting and analyzing the arc fault signal and the fault current signal, and comprehensively analyzing and judging the two signals.
The arc light protection device adopts the arc light detection and overcurrent detection dual-criterion principle, has the characteristics of high protection action speed, high reliability and the like, and the arc light protection action is mainly based on two different factors generated by faults: arc light and current increment send the tripping operation order when detecting arc light and current increment simultaneously, excision arc light branch road, consequently reached the purpose of quick disconnection high tension switchgear main brake elimination arc light, can make a response rapidly when the arc light appears in the high tension switchgear to avoid the arc light to cause the harm to the high tension switchgear, guarantee the safe operation of whole electric wire netting equipment.
The breaker failure protection unit 600 establishes signal transmission with the photoelectric emission unit 300, and the breaker failure protection unit 600 is arranged in the high-voltage switch cabinet and used for executing a tripping command; the early warning module 700 is in communication connection with the main control unit 500, and the early warning module 700 is used for early warning arc faults existing in the high-voltage switch cabinet; the display module 800 establishes a communication connection with the main control unit 500, and the display module 800 is used for displaying arc fault information of the high-voltage switch cabinet.
The arc light detection unit 100 adopts an arc light probe for detecting ultraviolet light, the current detection unit 200 adopts a Hall current sensor, the main control unit 500 adopts a microprocessor with the model of STM32F103, a temperature detection unit is further arranged in the high-voltage switch cabinet and adopts an infrared temperature sensor with the model of TPS534, and the temperature detection unit is in communication connection with the main control unit 500.
The arc probes are arranged at any position in the high-voltage switch cabinet, the arrangement positions of the arc probes are used for protecting the high-voltage switch cabinet in a partitioning manner, the arc probes are used for collecting the peculiar spectral information in the arc signals and autonomously completing the conversion between the optical signals and the electrical signals, and outputting 4-20mA current signals to the photoelectric emission unit 300, the arc probes adopted by the embodiment can be placed at any position in the high-voltage switch cabinet, the function of protecting the partitioning can be realized according to the actual physical positions of the arc probes, and the position of the fault occurrence is displayed on the display module, so that the function of reducing the processing time of power failure and rapidly recovering the power supply function can be realized, the main control unit 500 is embedded and arranged on a secondary control door panel of a wire inlet cabinet or a feeder cabinet in the high-voltage switch cabinet, and the two signals are analyzed and processed and judged by the main control unit to send out early warning signals, meanwhile, the output control signal is transmitted to the breaker failure protection unit through the photoelectric receiving unit and the photoelectric transmitting unit, and real-time and effective protection is carried out on the switch cabinet through the breaker failure protection unit and the trip command.
The specific implementation process of the implementation is as follows: the arc light detection unit 100 and the current detection unit 200 respectively detect an arc light phenomenon and a current increment condition in the high-voltage switch cabinet, the main control unit 500 detects a temperature condition in the switch cabinet through the temperature detection unit, and meanwhile, the main control unit 500 analyzes arc light and an overcurrent signal generated when a fault occurs.
The main control unit 500 detects and analyzes the fault current signal, receives and analyzes the arc fault signal, and performs comprehensive analysis and judgment on the two signals, when the tripping condition is met, a tripping command is sent to remove the fault, the main control unit 500 is directly embedded and installed on the secondary control door panel of the incoming line cabinet or the feeder line cabinet, the arc light detection unit 100 can be placed at any position of the switch device, the function of protecting the subareas can be realized according to the actual physical position of the arc sensor, and the position of the fault occurrence is displayed on the display module 800, the function can reduce the processing time of power failure, so that the rapid power restoration becomes possible, the arc probe is used as a light sensing element, when arc fault occurs, the light intensity which is suddenly increased can be detected, the arc probe acquires the special spectrum information in the arc signal, and the conversion of the optical signal and the electrical signal is completed at the probe, and a current signal of 4-20mA is output and sent to the main control unit 500.
The signals detected by the arc light detection unit 100 and the current detection unit 200 are processed by the photoelectric emission unit 300 and transmitted to the photoelectric receiving unit 400 through optical fibers, the photoelectric receiving unit 400 converts the optical signals into voltage signals, the voltage signals are amplified and filtered, and then the signals are transmitted to the main control unit 500 of the microprocessor STM32F103, the microprocessor analyzes and processes the signals, sends out early warning signals after judgment, and simultaneously outputs control signals to be transmitted to the circuit breaker failure protection unit 600 through the photoelectric receiving unit 400 and the photoelectric emission unit 300, and the circuit breaker failure protection unit 600 executes a tripping command to effectively protect a high-voltage switch cabinet in real time.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. An intelligent electric arc light protection system, comprising:
the arc detection unit (100) is used for detecting the suddenly increased light intensity of the high-voltage switch cabinet when an arc fault occurs;
the current detection unit (200), the current detection unit (200) is used for detecting the current increment appearing in the high-voltage switch cabinet;
the photoelectric emission unit (300) is respectively in signal transmission with the arc detection unit (100) and the current detection unit (200), and the photoelectric emission unit (300) is used for receiving arc fault signals and fault current signals emitted by the arc detection unit (100) and the current detection unit (200);
the photoelectric receiving unit (400) is used for establishing signal transmission between the photoelectric receiving unit (400) and the photoelectric emitting unit (300) through an optical fiber, and the photoelectric receiving unit (400) is used for receiving a fault signal sent by the photoelectric emitting unit (300), converting an optical signal detected by the arc light detecting unit (100) into a voltage signal, and amplifying and filtering the voltage signal;
the main control unit (500) is used for establishing signal transmission with the photoelectric receiving unit (400), and the main control unit (500) is used for detecting and analyzing arc fault signals and fault current signals and comprehensively analyzing and judging the two signals.
2. An intelligent electric arc protection system as claimed in claim 1, wherein: the arc light protection system further comprises: a circuit breaker failure protection unit (600), the circuit breaker failure protection unit (600) establishing signal transmission with the photoemissive unit (300), the circuit breaker failure protection unit (600) being arranged within the high voltage switchgear and being used for executing a trip command.
3. Intelligent electric arc protection system according to claim 1 or 2, characterized in that: the arc light protection system further comprises:
the early warning module (700), the early warning module (700) is in communication connection with the main control unit (500), and the early warning module (700) is used for early warning arc faults existing in the high-voltage switch cabinet;
the display module (800) is in communication connection with the main control unit (500), and the display module (800) is used for displaying arc fault information of the high-voltage switch cabinet.
4. The intelligent electrical arc protection system of claim 1, wherein: the arc light detection unit (100) adopts an arc probe for detecting ultraviolet light, the current detection unit (200) adopts a Hall current sensor, and the main control unit (500) adopts a microprocessor with the model of STM32F 103.
5. The intelligent electrical arc protection system of claim 4, wherein: the arc probes are arranged at any positions in the high-voltage switch cabinet, the arrangement positions of the arc probes are used for protecting the high-voltage switch cabinet in a partitioning mode, the arc probes are used for collecting the special spectral information in the arc signals, the conversion between the optical signals and the electrical signals is automatically completed, and 4-20mA current signals are output and sent to the photoelectric emission unit (300).
6. Intelligent electric arc protection system according to claim 1, characterized in that: the main control unit (500) is installed on a secondary control door panel of an incoming line cabinet or a feeder line cabinet in the high-voltage switch cabinet in an embedded mode.
7. The intelligent electrical arc protection system of claim 1, wherein: and a temperature detection unit is also arranged in the high-voltage switch cabinet and adopts an infrared temperature sensor with the model of TPS 534.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220941065.6U CN217406183U (en) | 2022-04-21 | 2022-04-21 | Intelligent electric arc light protection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220941065.6U CN217406183U (en) | 2022-04-21 | 2022-04-21 | Intelligent electric arc light protection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217406183U true CN217406183U (en) | 2022-09-09 |
Family
ID=83142216
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220941065.6U Active CN217406183U (en) | 2022-04-21 | 2022-04-21 | Intelligent electric arc light protection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217406183U (en) |
-
2022
- 2022-04-21 CN CN202220941065.6U patent/CN217406183U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1335466B1 (en) | Self-powered apparatus and method for optically detecting arcing faults in electric power systems in the presence of other light sources | |
| CN104280631B (en) | SPD on-line intelligence monitoring device and SPD on-line intelligence monitoring system | |
| KR101602844B1 (en) | Photovoltaic solar connection board with function of monitoring and diagnosing electric fire by detecting overheat and arc | |
| CN205944774U (en) | Cubical switchboard temperature rise monitoring fuel detonation suppressant system | |
| CN202094617U (en) | Arc light protection system | |
| CN110867819A (en) | Arc light detection method and device | |
| CN105429115A (en) | Photovoltaic power generation system, photovoltaic direct current cable protection device and control method thereof | |
| CN104332948A (en) | Arc fault protection device | |
| CN217406183U (en) | Intelligent electric arc light protection system | |
| CN206977035U (en) | A kind of device for reducing high voltage electric equipment detonation damage | |
| CN204068219U (en) | A kind of regulator cubicle arc light protecting device | |
| CN116565816A (en) | Protection method and protection system for arc faults of high-voltage direct-current line | |
| CN104779597A (en) | Electric system current limiting protecting equipment and protecting method thereof | |
| US20230187920A1 (en) | Method and apparatus for determining phase locking of critical arc light | |
| CN209561923U (en) | Intelligent railway weak electric system power lightning protection distribution device | |
| CN110311357A (en) | A kind of Backup Protection Device for Transformer accelerated using nearly bus electric arc | |
| CN207925942U (en) | A kind of fast cut type armored withdraw type switchgear of arc protection intelligence | |
| CN206471803U (en) | A kind of header box protection device | |
| CN106655086A (en) | Combiner box protection device and method | |
| CN211089128U (en) | Intelligent arc light protection device | |
| CN102684152A (en) | Special fault electric arc detection arc-extinguishing device for photovoltaic confluence | |
| CN202616748U (en) | Arc extinguishing device for fault arc detection special for photovoltaic convergence | |
| CN105281299A (en) | Electrical cabinet arc light protection device and protection method | |
| CN206195329U (en) | Collection flow box protection device | |
| CN206471802U (en) | A kind of header box protection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: An intelligent arc light protection system Granted publication date: 20220909 Pledgee: Anhui Feixi Rural Commercial Bank Co.,Ltd. Feiguang Branch Pledgor: Anhui Hongke Electric Power Technology Co.,Ltd. Registration number: Y2024980008901 |