CN102694372A - Monitoring and arc protecting system for switch cabinet - Google Patents
Monitoring and arc protecting system for switch cabinet Download PDFInfo
- Publication number
- CN102694372A CN102694372A CN2012101770635A CN201210177063A CN102694372A CN 102694372 A CN102694372 A CN 102694372A CN 2012101770635 A CN2012101770635 A CN 2012101770635A CN 201210177063 A CN201210177063 A CN 201210177063A CN 102694372 A CN102694372 A CN 102694372A
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- China
- Prior art keywords
- switch cubicle
- arc
- switch cabinet
- main frame
- signal processor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02B90/20—Smart grids as enabling technology in buildings sector
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/124—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wired telecommunication networks or data transmission busses
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- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The invention relates to a running state monitoring and arc protecting system for a switch cabinet, which belongs to the monitoring and relay protection field of electric equipment. The system consists of a host machine and a slave machine which are both controlled by a DSP (Digital Signal Processor) and adopt field bus communication. A digital temperature sensor is used for monitoring the temperature in the switch cabinet; and an ultraviolet sensor is used for detecting partial discharge in the switch cabinet and ultraviolet rays emitted by short circuit arcs. The system has the characteristics that temperature rise or partial discharge caused by abnormal operation of the switch cabinet can be detected and a warning signal can be given out immediately to prevent the switch cabinet from short troubles. If the switch cabinet is suddenly short-circuited, the system can immediately detect the ultraviolet rays emitted by the arcs, rapidly transmit information through an advanced field bus and quickly and selectively clear faults.
Description
Technical field
The present invention relates to switch cubicle monitoring running state and arc protection system, belong to power plant and electric substation's electric equipment monitoring and relaying protection field.
Background technology
Switch cubicle is the important electric equipment of power plant and electric substation.Switch cubicle inside possibly be short-circuited, and can produce electric arc at short dot.Conventional relaying protection is for the selectivity of safety action, and after switch cubicle inside was short-circuited, under many circumstances, fault clearing time was often greater than 100ms.Therefore the energy of short circuiting arc is very big, in the switch cubicle of sealing, forms very high temperature and pressure, not only can damage the element in the switch cubicle, also possibly cause switch cubicle burning or blast, jeopardizes personal safety and causes that long-time power failure stops production.In order not damage switch cubicle under the situation about being short-circuited, guarantee personal safety and shorten interruption duration as far as possible that the short circuit current duration should be less than 100ms in switch cubicle inside.Because short dot electric arc can occur usually, can adopt the arc protection device for this reason.
The arc protection device that uses at present normally is made up of main frame and slave, adopts the RS485 communication mode between main frame and the slave.But the antijamming capability of RS485 communication is desirable not enough with the fault-tolerant ability of communicating by letter.
Some switch cubicle is owing to partial discharge can take place reasons such as ageing of insulation, air pollution, humidity or element become flexible.The partial discharge monitoring device generally is not installed at present, if partial discharge then can't be sent alarm signal in switch cubicle.If the running status of switch cubicle continues to worsen, then partial discharge might develop into short trouble.
Because all abnormal states such as overload, lead or element bad connections, the switch in-cabinet temperature possibly raise.Device for detecting temperature generally is not installed in switch cubicle at present.If operator on duty every day is with the temperature of hand-hold type infrared radiation thermometer measuring switch cabinet inside conductor or element, because will open the door of switch cubicle, trouble not only, and be out of order easily.
The LCD LCDs of the arc protection device of producing at present can only show Chinese character, letter and number, can not show curve, is unfavorable for status monitoring and accident analysis.
Therefore the arc protection device is necessary to adopt more advanced communication mode, adopts the High Resolution LCD LCDs to show curve, increases partial discharge monitoring and temperature-monitoring function.
Summary of the invention
The purpose of this invention is to provide a kind of switch cubicle monitoring and arc protection system: through sense switch in-cabinet temperature and uitraviolet intensity; Find overtemperature and partial discharge phenomenon that switch cubicle is inner timely and accurately; Provide alarm signal; So that the operator on duty is the inspection switch cabinet in a planned way, avoid abnormal state to develop into short trouble; Sense switch cabinet internal arc short trouble, the field bus communication technology through the advanced person transmits information rapidly reliably, in 2ms, sends trip signal; Excise fault fast selectively; Guarantee switch cubicle and personal safety, shorten interruption duration, dwindle the power failure scope.
The technical scheme that the present invention adopts is following:
The switch cubicle monitoring running state and the arc protection method that propose may further comprise the steps:
Switch cubicle monitoring and arc protection system; Comprise main frame and slave; It is characterized in that; Main frame and slave all comprise digital signal processor, UV sensor, digital temperature sensor, power pack, tripping relay, signal relay and High Resolution LCD LCDs, adopt field bus communication between main frame and the slave; UV sensor is installed in the bus-bar room and the cable vault of switch cubicle; Said UV sensor is connected to optical receiver through optical fiber; The voltage signal of optical receiver output is given said digital signal processor, if uitraviolet intensity is greater than the partial discharge definite value after conditioning and A/D conversion; But less than the short circuit definite value, then said digital signal processor sends the partial discharge alarm signal; Digital temperature sensor is installed in the bus-bar room and the cable vault of switch cubicle; Said temperature sensor is connected to the peripheral communication mouth of digital signal processor through holding wire; Digital signal processor is accomplished temperature value and is calculated and logic judging function; If the actual temperature of measuring is greater than the temperature definite value, then said digital signal processor sends alarm signal.
Said UV sensor is used to detect the ultraviolet ray that partial discharge and short circuiting arc send.The uitraviolet intensity definite value has two, and less is the partial discharge definite value, is used to judge whether to occur partial discharge; Bigger is the short circuit definite value, is used to judge whether failed because.
The arc protection of system can adopt arc light list criterion, also can adopt the two criterions of arc light and overcurrent.If use arc light list criterion,, uitraviolet intensity makes circuit breaker trip as long as, just sending out trip signal greater than the short circuit definite value.If use the two criterions of arc light and overcurrent, when uitraviolet intensity greater than the short circuit definite value, the while inlet wire current is just sent out trip signal and is made circuit breaker trip greater than the overcurrent definite value.The ultraviolet ray of outlet switch cubicle is by from machine testing, and inlet wire current is detected by main frame.Adopt fieldbus such as CAN bus, Profibus, Foudation Fieldbus or LonWorks bus communication between main frame and the slave, each DSP has two Fieldbus Control devices.
Adopt 320*240 dot matrix High Resolution LCD LCDs, the waveform of analog input amount in the time of can showing normal operation also can show the waveform of failure wave-recording.
The invention has the beneficial effects as follows: the digital temperature sensor that precision is high, antijamming capability is strong is adopted in (1); Temperature in the auto-real-time monitoring switch cubicle; Can in time find because the temperature that the switch cubicle abnormal state causes raises; Prevent that switch cabinet state from further worsening, reduce rate of breakdown.(2) uitraviolet intensity in the continuous real-time monitoring switch cubicle can reliable detection go out the partial discharge that causes owing to reasons such as ageing of insulation, air pollution, humidity or element become flexible, sends out alarm signal.As long as in time switch cubicle is handled, just can prevent that partial discharge from developing into short trouble.(3) the Fieldbus Control device that is adopted works in many master modes, and traffic rate is high, and reliable communications is so system of the present invention can reliably excise switch cubicle internal arc short trouble fast selectively.Adopt field bus communication can improve the antijamming capability and the fault-tolerant ability of communicating by letter.Because each DSP has two Fieldbus Control devices, can simplify hardware configuration, improves the quality of products.
Description of drawings
Fig. 1 is a host hardware system block diagram of the present invention.
Fig. 2 is main frame of the present invention and slave allocation plan.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the present invention is done further detailed explanation.
The system that the present invention proposes can be used in middle pressure or the low-tension switch cabinet, as temperature monitoring, partial discharge monitoring and arc short circuit protective device by main frame and slave machine.Be applied as example with Medium Voltage Switchgear below, describe specific embodiments.
Each main frame and slave device all have 4 temperature sensors and 4 UV sensors.The bus-bar room of each switch cubicle and cable vault respectively adorn two temperature sensors and two UV sensors.Digital temperature sensor is connected to the peripheral communication mouth of digital signal processor (DSP) through holding wire, and DSP gives an order and makes 4 temperature sensor unifications carry out temperature transition, and DSP reads temperature value one by one then.If the actual temperature that slave is measured continued greater than temperature definite value a period of time, then slave transmits information through fieldbus to main frame, and being said the word by main frame makes the signal relay outlet closing of contact send out alarm signal.
UV sensor is connected to optical receiver through optical fiber, and the signal of telecommunication that optical receiver is exported is changed through sample maintenance and A/D and obtained uitraviolet intensity numerical value after amplification and filter circuit conditioning.If slave detects partial discharge phenomenon, then slave initiatively transmits partial discharge information to main frame through fieldbus, sends alarm signal by main frame.
If slave detects the cable vault of outlet switch cubicle short circuiting arc is arranged; Main frame detects the inlet wire overcurrent simultaneously; Main frame is initiatively given slave with the overcurrent information broadcast through fieldbus; It is cable vault's short circuit of outlet switch cubicle that slave is judged, then slave says the word and makes the solid-state relay outlet closing of contact, makes the outlet circuit breaker trip.
If slave detects the bus-bar room of outlet switch cubicle short circuiting arc is arranged, slave is initiatively sent out short circuit information to main frame through fieldbus.If main frame detects the inlet wire overcurrent simultaneously, then main frame is sent out trip signal and is made lead-in circuit breaker and network interconnecting circuit tripping operation.
After sending out trip signal or sending out alarm signal, LCD display shows for information about and curve that main frame will send upper systematic manager to for information about through RS485, Ethernet or fieldbus.
The host hardware system block diagram is seen Fig. 1, and slave hardware system block diagram and main frame are similar.Main frame and slave allocation plan are seen Fig. 2, for clarity, and Fig. 2 do not draw temperature sensor and power pack.
Claims (5)
1. switch cubicle is monitored and the arc protection system; Comprise main frame and slave; It is characterized in that; Main frame and slave all comprise digital signal processor, UV sensor, digital temperature sensor, power pack, tripping relay, signal relay and High Resolution LCD LCDs, adopt field bus communication between main frame and the slave; UV sensor is installed in the bus-bar room and the cable vault of switch cubicle; Said UV sensor is connected to optical receiver through optical fiber; The voltage signal of optical receiver output is given said digital signal processor, if uitraviolet intensity is greater than the partial discharge definite value after conditioning and A/D conversion; But less than the short circuit definite value, then said digital signal processor sends the partial discharge alarm signal; Digital temperature sensor is installed in the bus-bar room and the cable vault of switch cubicle; Said temperature sensor is connected to the peripheral communication mouth of digital signal processor through holding wire; Digital signal processor is accomplished temperature value and is calculated and logic judging function; If the actual temperature of measuring is greater than the temperature definite value, then said digital signal processor sends alarm signal.
2. switch cubicle monitoring according to claim 1 and arc protection system; It is characterized in that: the ultraviolet ray of outlet switch cubicle is by from machine testing; Inlet wire current is detected by main frame, if arc short circuit takes place in outlet switch cubicle cable vault, then slave sends trip signal and makes the outlet circuit breaker trip; If outlet switch cubicle bus-bar room generation arc short circuit, then main frame is sent out trip signal, makes the lead-in circuit breaker tripping operation.
3. switch cubicle monitoring according to claim 1 and 2 and arc protection system; It is characterized in that: the arc protection of system adopts the two criterions of arc light list criterion or arc light and overcurrent: when using arc light list criterion; As long as uitraviolet intensity, is just sent out trip signal greater than the short circuit definite value and is made circuit breaker trip; When using the two criterion of arc light and overcurrent, when uitraviolet intensity greater than the short circuit definite value, the while inlet wire current is just sent out trip signal and is made circuit breaker trip greater than the overcurrent definite value.
4. switch cubicle monitoring according to claim 1 and arc protection system, it is characterized in that: said fieldbus adopts CAN bus, Profibus, Foudation Fieldbus or LonWorks bus; Each said digital signal processor has two Fieldbus Control devices.
5. switch cubicle monitoring according to claim 1 and arc protection system is characterized in that: the waveform of analog input amount perhaps showed the waveform of failure wave-recording when said High Resolution LCD LCDs showed normal the operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101770635A CN102694372A (en) | 2012-06-01 | 2012-06-01 | Monitoring and arc protecting system for switch cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101770635A CN102694372A (en) | 2012-06-01 | 2012-06-01 | Monitoring and arc protecting system for switch cabinet |
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| CN102694372A true CN102694372A (en) | 2012-09-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012101770635A Pending CN102694372A (en) | 2012-06-01 | 2012-06-01 | Monitoring and arc protecting system for switch cabinet |
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Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103138245A (en) * | 2013-01-31 | 2013-06-05 | 浙江科润电力设备有限公司 | High-integration integrated automation protective device provided with on-line temperature measurement and arc light monitoring |
| CN103346525A (en) * | 2013-07-16 | 2013-10-09 | 南京益瑞电气有限公司 | Arc light protecting device based on UVC sensors |
| CN103618295A (en) * | 2013-11-29 | 2014-03-05 | 国家电网公司 | Photoelectric type arc light protecting system |
| CN104332833A (en) * | 2014-11-14 | 2015-02-04 | 成都华瑞祥电器成套设备有限公司 | Electrical control high-tension switch cabinet |
| CN104614571A (en) * | 2015-01-23 | 2015-05-13 | 云南电网有限责任公司电力科学研究院 | Method for measuring and calculating current setting value of arc light protection device |
| WO2015067080A1 (en) * | 2013-11-08 | 2015-05-14 | 苏州康开电气有限公司 | Intelligent information collection system for electromechanical equipment |
| CN104849640A (en) * | 2015-06-09 | 2015-08-19 | 安徽罗伯特科技股份有限公司 | Fault diagnosis system for distribution network based on double threshold values |
| CN104898032A (en) * | 2015-06-05 | 2015-09-09 | 安徽罗伯特科技股份有限公司 | Fault detection apparatus of distribution network switch cabinet |
| CN105071336A (en) * | 2015-08-25 | 2015-11-18 | 江苏省电力公司淮安供电公司 | Device and method for fault alarm and protection of arc light of switch cabinet primary equipment |
| CN105514947A (en) * | 2015-12-01 | 2016-04-20 | 国网辽宁省电力有限公司锦州供电公司 | Protection device and method for monitoring overcurrent and arc light faults of primary equipment of switch cabinet |
| CN106329723A (en) * | 2016-08-16 | 2017-01-11 | 安徽众升电力科技有限公司 | Multifunctional electric power equipment monitoring system |
| CN106410739A (en) * | 2016-11-02 | 2017-02-15 | 云南电力试验研究院(集团)有限公司 | Arc protection device and fault diagnosis method thereof |
| CN108508307A (en) * | 2018-05-25 | 2018-09-07 | 国网冀北电力有限公司廊坊供电公司 | Electric distribution network electrical equipment monitors system |
| CN108759926A (en) * | 2018-07-06 | 2018-11-06 | 国网江苏省电力有限公司昆山市供电分公司 | Mobile robot formula high-tension switch cabinet colony intelligence on-line monitoring system and method |
| CN109217237A (en) * | 2018-10-23 | 2019-01-15 | 安徽美昂电气有限公司 | A kind of AC feeder line arc light protecting device |
| CN109347068A (en) * | 2018-10-23 | 2019-02-15 | 安徽美昂电气有限公司 | A kind of switchgear end flame proection |
| CN110676938A (en) * | 2019-10-14 | 2020-01-10 | 国网山东省电力公司潍坊供电公司 | Monitoring operation device for air switch |
| CN110988622A (en) * | 2019-11-29 | 2020-04-10 | 河南省恒华电力设备有限公司 | High tension switchgear partial discharge monitoring and early warning system |
| CN111751685A (en) * | 2020-07-08 | 2020-10-09 | 广东电网有限责任公司 | Circuit breaker partial discharge fault and arc light short circuit fault monitoring device |
| 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 |
| CN116298737A (en) * | 2023-05-24 | 2023-06-23 | 广东电网有限责任公司佛山供电局 | Switch cabinet discharge monitoring system, method and equipment |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201527456U (en) * | 2009-11-03 | 2010-07-14 | 大连东方电器制造有限公司 | Field bus monitoring system for synthetic state of switch cabinet |
| CN201590653U (en) * | 2009-12-25 | 2010-09-22 | 杭州瑞胜电气有限公司 | Photoelectric arc light protection system |
| CN201758277U (en) * | 2010-05-04 | 2011-03-09 | 蒋宝中 | High-low pressure tank relay-protection integrated automation device |
| CN201797308U (en) * | 2010-09-17 | 2011-04-13 | 南京师范大学 | Microcomputer arc light protection device |
| CN102025131A (en) * | 2010-12-03 | 2011-04-20 | 铜川供电局 | Arc light monitoring and protecting system |
| CN102332753A (en) * | 2011-09-21 | 2012-01-25 | 山东大学 | Intelligentized switch cabinet integrative monitoring system |
-
2012
- 2012-06-01 CN CN2012101770635A patent/CN102694372A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201527456U (en) * | 2009-11-03 | 2010-07-14 | 大连东方电器制造有限公司 | Field bus monitoring system for synthetic state of switch cabinet |
| CN201590653U (en) * | 2009-12-25 | 2010-09-22 | 杭州瑞胜电气有限公司 | Photoelectric arc light protection system |
| CN201758277U (en) * | 2010-05-04 | 2011-03-09 | 蒋宝中 | High-low pressure tank relay-protection integrated automation device |
| CN201797308U (en) * | 2010-09-17 | 2011-04-13 | 南京师范大学 | Microcomputer arc light protection device |
| CN102025131A (en) * | 2010-12-03 | 2011-04-20 | 铜川供电局 | Arc light monitoring and protecting system |
| CN102332753A (en) * | 2011-09-21 | 2012-01-25 | 山东大学 | Intelligentized switch cabinet integrative monitoring system |
Non-Patent Citations (3)
| Title |
|---|
| 杨益民等: "电弧光保护***在中低压开关柜中的应用", 《小水电》 * |
| 樊建军等: "电弧光保护在中低压开关柜和母线保护中的应用", 《内蒙古电力技术》 * |
| 田广青: "电弧光保护及其在中低压开关柜和母线保护中的应用", 《低压电器》 * |
Cited By (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103138245A (en) * | 2013-01-31 | 2013-06-05 | 浙江科润电力设备有限公司 | High-integration integrated automation protective device provided with on-line temperature measurement and arc light monitoring |
| CN103346525A (en) * | 2013-07-16 | 2013-10-09 | 南京益瑞电气有限公司 | Arc light protecting device based on UVC sensors |
| WO2015067080A1 (en) * | 2013-11-08 | 2015-05-14 | 苏州康开电气有限公司 | Intelligent information collection system for electromechanical equipment |
| CN103618295A (en) * | 2013-11-29 | 2014-03-05 | 国家电网公司 | Photoelectric type arc light protecting system |
| CN104332833A (en) * | 2014-11-14 | 2015-02-04 | 成都华瑞祥电器成套设备有限公司 | Electrical control high-tension switch cabinet |
| CN104614571B (en) * | 2015-01-23 | 2018-05-25 | 云南电网有限责任公司电力科学研究院 | A kind of method for calculating arc light protecting device current setting |
| CN104614571A (en) * | 2015-01-23 | 2015-05-13 | 云南电网有限责任公司电力科学研究院 | Method for measuring and calculating current setting value of arc light protection device |
| CN104898032A (en) * | 2015-06-05 | 2015-09-09 | 安徽罗伯特科技股份有限公司 | Fault detection apparatus of distribution network switch cabinet |
| CN104849640A (en) * | 2015-06-09 | 2015-08-19 | 安徽罗伯特科技股份有限公司 | Fault diagnosis system for distribution network based on double threshold values |
| CN105071336A (en) * | 2015-08-25 | 2015-11-18 | 江苏省电力公司淮安供电公司 | Device and method for fault alarm and protection of arc light of switch cabinet primary equipment |
| CN105514947A (en) * | 2015-12-01 | 2016-04-20 | 国网辽宁省电力有限公司锦州供电公司 | Protection device and method for monitoring overcurrent and arc light faults of primary equipment of switch cabinet |
| CN106329723A (en) * | 2016-08-16 | 2017-01-11 | 安徽众升电力科技有限公司 | Multifunctional electric power equipment monitoring system |
| CN106410739A (en) * | 2016-11-02 | 2017-02-15 | 云南电力试验研究院(集团)有限公司 | Arc protection device and fault diagnosis method thereof |
| CN108508307A (en) * | 2018-05-25 | 2018-09-07 | 国网冀北电力有限公司廊坊供电公司 | Electric distribution network electrical equipment monitors system |
| CN108759926A (en) * | 2018-07-06 | 2018-11-06 | 国网江苏省电力有限公司昆山市供电分公司 | Mobile robot formula high-tension switch cabinet colony intelligence on-line monitoring system and method |
| CN109217237A (en) * | 2018-10-23 | 2019-01-15 | 安徽美昂电气有限公司 | A kind of AC feeder line arc light protecting device |
| CN109347068A (en) * | 2018-10-23 | 2019-02-15 | 安徽美昂电气有限公司 | A kind of switchgear end flame proection |
| CN110676938A (en) * | 2019-10-14 | 2020-01-10 | 国网山东省电力公司潍坊供电公司 | Monitoring operation device for air switch |
| CN110676938B (en) * | 2019-10-14 | 2023-04-28 | 国网山东省电力公司潍坊供电公司 | Monitoring operation device for air switch |
| CN110988622A (en) * | 2019-11-29 | 2020-04-10 | 河南省恒华电力设备有限公司 | High tension switchgear partial discharge monitoring and early warning system |
| CN111751685A (en) * | 2020-07-08 | 2020-10-09 | 广东电网有限责任公司 | Circuit breaker partial discharge fault and arc light short circuit fault monitoring device |
| 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 |
| CN114597861B (en) * | 2022-03-04 | 2022-11-18 | 江苏南能电气有限公司 | Photovoltaic box transformer arc light protection device |
| CN116298737A (en) * | 2023-05-24 | 2023-06-23 | 广东电网有限责任公司佛山供电局 | Switch cabinet discharge monitoring system, method and equipment |
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Application publication date: 20120926 |