CN101825684A - Intelligent vacuum circuit breaker online monitoring method - Google Patents

Intelligent vacuum circuit breaker online monitoring method Download PDF

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Publication number
CN101825684A
CN101825684A CN 201010176975 CN201010176975A CN101825684A CN 101825684 A CN101825684 A CN 101825684A CN 201010176975 CN201010176975 CN 201010176975 CN 201010176975 A CN201010176975 A CN 201010176975A CN 101825684 A CN101825684 A CN 101825684A
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CN
China
Prior art keywords
circuit breaker
vacuum circuit
isolating switch
vacuum
monitoring
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CN 201010176975
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Chinese (zh)
Inventor
龚学成
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Changzhou Mecan Electrical Technology Development Co Ltd
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Changzhou Mecan Electrical Technology Development Co Ltd
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Priority to CN 201010176975 priority Critical patent/CN101825684A/en
Publication of CN101825684A publication Critical patent/CN101825684A/en
Pending legal-status Critical Current

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Abstract

The invention relates to the monitoring technical field of the vacuum circuit breaker, in particular to an intelligent vacuum circuit breaker online monitoring method, which comprises the following steps that: a. an intelligent vacuum circuit breaker online monitoring device is connected with a vacuum circuit breaker, and a sensor of the online monitoring device is arranged inside the vacuum circuit breaker; B. the senor instantly collect the running parameter information of the vacuum circuit breaker and transmits the running parameter information to a control module; C. the control module analyzes and compares the running parameter information of the vacuum circuit breaker and performs the conversion treatment of the running parameter information; D. the information after being processed is directly fed back to the online monitoring device in an acousto-optic way. A plurality of measurement parameters are obtained through a plurality of sensors of different types so as to instantly monitor the running state of the vacuum circuit breaker and to improve the examination pertinence, so the automatic treatment of the online monitored information is realized, the reliability of the electric power system is remarkably improved, and the work intensity of the personnel is greatly reduced.

Description

Intelligent vacuum circuit breaker online monitoring method
Technical field
The present invention relates to the monitoring technical field of vacuum circuit breaker, especially a kind of intelligent vacuum circuit breaker online monitoring method.
Background technology
Current society is more and more higher to the dependence of electric energy, and the safety and the reliability of power-supply unit are also had higher requirement.Vacuum circuit breaker uses as protection and control apparatus in electric system; power circuit under various loads of different nature of switching and normal, the abnomal condition; therefore the peaceful property that is concerning Operation of Electric Systems, keeps stablizing of the every index parameter of vacuum circuit breaker most important.
At present, the detection of against vacuum isolating switch has only the detection of individual event, and is wire transmission, when carrying out multinomial detection, after needing outage, carry out every detection to the scene, detect and compare more complicated by many checkout equipments and personnel, workload is big, the cost height, and can not monitor in real time, do not satisfy actual user demand.
Summary of the invention
Big in order to overcome existing vacuum circuit breaker monitoring amount, and the monitoring real-time is poor, and the deficiency that detection of complex and cost are high the invention provides a kind of intelligent vacuum circuit breaker online monitoring method.
The technical solution adopted for the present invention to solve the technical problems is: a kind of intelligent vacuum circuit breaker online monitoring method, and this method may further comprise the steps:
A. the intelligent vacuum circuit breaker on-Line Monitor Device is connected on the vacuum circuit breaker, the sensor of on-Line Monitor Device is arranged in the vacuum circuit breaker;
B. described sensor is gathered in real time to the vacuum circuit breaker trip information, and transfers to control module;
C. described control module is analyzed contrast to the trip information of vacuum circuit breaker, conversion process;
D. the information of handling is directly fed back on on-Line Monitor Device by the acousto-optic mode.
According to another embodiment of the invention, further comprise described control module to the trip information of vacuum circuit breaker analyze the contrast comprise vacuum circuit breaker major loop temperature rise on-line monitoring: in isolating switch one side temperature sensor is installed, under the isolating switch running status, detect loop temperature in real time, by being wirelessly transmitted to controller, the temperature parameter that receives is compared with environment temperature by central processing unit, draw the real-time temperature rise of isolating switch, and with default temperature rise alarming value relatively, in time send alarm.
According to another embodiment of the invention, further comprise described control module to the trip information of vacuum circuit breaker analyze the contrast comprise vacuum circuit breaker arc-chutes vacuum tightness on-line monitoring: in isolating switch one side vacuum sensor is installed, under the isolating switch running status, monitor arc-chutes vacuum tightness in real time, when the detection data exceed the alarming value of user's setting, send alarm.
According to another embodiment of the invention, further comprise described control module to the trip information of vacuum circuit breaker analyze the contrast comprise vacuum circuit breaker over travel on-line monitoring: at isolating switch major loop installation position displacement sensor, the variation of record isolating switch over travel, and accuracy of detection reaches 0.1mm, exceed default alarming value when detecting data, then send alarm.
According to another embodiment of the invention, comprise that further described control module analyzes contrast to the trip information of vacuum circuit breaker and comprise the monitoring of vacuum circuit breaker tripping operation control loop: the integrity in continuous automatic inspection loop in the isolating switch operational process, will send alarm signal automatically in case the loop disconnects, guarantee that isolating switch comes interim reliable tripping operation in fault.
The invention has the beneficial effects as follows, by being set, a plurality of sensors of various types obtain multinomial measurement parameter, running status to vacuum circuit breaker is monitored in real time, reduce unnecessary power failure test and maintenance, reduce maintenance workload, reduce maintenance cost, improve the specific aim of maintenance, realize the robotization of on-line monitoring information processing, significantly improved the reliability of electric system, greatly reduced personnel's working strength.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is an intelligent vacuum circuit breaker on-Line Monitor Device circuit module synoptic diagram of the present invention;
Fig. 2 is an intelligent vacuum circuit breaker on-Line Monitor Device electrical block diagram of the present invention;
Fig. 3 is the process flow diagram of intelligent vacuum circuit breaker online monitoring method of the present invention;
Fig. 4 is the process flow diagram of vacuum circuit breaker major loop temperature rise on-line monitoring;
Fig. 5 is the process flow diagram of vacuum circuit breaker arc-chutes vacuum tightness on-line monitoring;
Fig. 6 is the process flow diagram of vacuum circuit breaker over travel on-line monitoring;
Fig. 7 is the process flow diagram of vacuum circuit breaker tripping operation control loop monitoring.
Embodiment
In conjunction with the accompanying drawings, the present invention is further detailed explanation.These accompanying drawings are the synoptic diagram of simplification, basic structure of the present invention only is described in a schematic way, so it only show the formation relevant with the present invention.
As Fig. 1 is intelligent vacuum circuit breaker on-Line Monitor Device circuit module synoptic diagram of the present invention, a kind of intelligent vacuum circuit breaker on-Line Monitor Device, this device comprises isolating switch, at least one sensor, controller and output device, wherein said sensor is used for the monitoring breaker operational factor, and the real-time parameter of its acquisition is transferred to described controller; The operational factor of described controller receiving sensor input is handled the parameter that obtains, and determines the difference of gained parameter, exports through output device.Described isolating switch operational factor comprises one of major loop temperature rise parameter, excess of stroke parameter, trip(ping) circuit broken string parameter and vacuum tightness parameter at least.This device has four big on-line monitoring/measuring ability---temperature rise, contact electric life, arc-chutes vacuum tightness and trip(ping) circuits, can judge the vacuum circuit breaker immediate status timely and accurately.In the electric system, primary cut-out quantity at most, the maintenance amount is big, expense is high; Incorrect or unnecessary maintenance was both lost time, and expense is also very high; Targetedly the isolating switch presence is monitored, can in time understand the duty of isolating switch, the position of defective, reduce too early or unnecessary power failure test and maintenance, reduce maintenance workload, reduce maintenance cost, improve the specific aim of maintenance, can significantly improve Power System Reliability and economy, also greatly reduce operations staff's working strength.
Described sensor be temperature sensor, vacuum sensor, displacement transducer and voltage sensor one of at least.Sensor is used for the monitoring breaker operational factor, and the real-time parameter of its acquisition is transferred to controller; The operational factor of controller receiving sensor input is handled the parameter that obtains, and determines the difference of gained parameter, exports through output device.
As Fig. 2 is intelligent vacuum circuit breaker on-Line Monitor Device electrical block diagram of the present invention, sensor be temperature sensor, vacuum sensor, displacement transducer, voltage sensor one of at least.Temperature sensor is used to obtain isolating switch major loop temperature rise parameter, and excess of stroke parameter, voltage sensor that vacuum tightness parameter, the displacement transducer that vacuum sensor is used to obtain the isolating switch major loop is used to obtain the isolating switch major loop are used to obtain isolating switch major loop tripping operation broken string parameter.
Described controller comprises the parameter criterion that input/output interface circuit, central processing unit, storage are default and the storer and the output circuit of accordingly result information, the isolating switch operational factor of input circuit receiving sensor input, and export it to central processing unit, this central processing unit carries out A, D conversion, signal amplification, signal compiling etc. with measurement parameter and analyzes contrast, conversion process, export final information to display through output circuit again, and carry out sound and light alarm.
The output port of described input/output interface circuit connects sound and light alarm, display screen or remote data transmission, and the output port of described output circuit connects display screen or remote data transmission.
Described display screen adopts intelligent machine plate---touch display screen.
A kind of intelligent vacuum circuit breaker online monitoring method, a kind of intelligent vacuum circuit breaker online monitoring method, this method may further comprise the steps:
A. the intelligent vacuum circuit breaker on-Line Monitor Device is connected on the vacuum circuit breaker, the sensor of on-Line Monitor Device is arranged in the vacuum circuit breaker;
B. described sensor is gathered in real time to the vacuum circuit breaker trip information, and transfers to control module;
C. described control module is analyzed contrast to the trip information of vacuum circuit breaker, conversion process;
D. the information of handling is directly fed back on on-Line Monitor Device by the acousto-optic mode.
Described control module is analyzed contrast to the trip information of vacuum circuit breaker and is comprised vacuum circuit breaker major loop temperature rise on-line monitoring: in isolating switch one side temperature sensor is installed, under the isolating switch running status, detect loop temperature in real time, by being wirelessly transmitted to controller, the temperature parameter that receives is compared with environment temperature by central processing unit, draw the real-time temperature rise of isolating switch, and with default temperature rise alarming value relatively, in time send alarm.
Described control module is analyzed contrast to the trip information of vacuum circuit breaker and is comprised vacuum circuit breaker arc-chutes vacuum tightness on-line monitoring: in isolating switch one side vacuum sensor is installed, under the isolating switch running status, monitor arc-chutes vacuum tightness in real time, when the detection data exceed the alarming value of user's setting, send alarm.
Described control module is analyzed contrast to the trip information of vacuum circuit breaker and is comprised vacuum circuit breaker over travel on-line monitoring: at isolating switch major loop installation position displacement sensor, the variation of record isolating switch over travel, and accuracy of detection reaches 0.1mm, exceed default alarming value when detecting data, then send alarm.
Described control module is analyzed contrast to the trip information of vacuum circuit breaker and is comprised the monitoring of vacuum circuit breaker tripping operation control loop: the integrity in continuous automatic inspection loop in the isolating switch operational process, will send alarm signal automatically in case the loop disconnects, guarantee that isolating switch comes interim reliable tripping operation in fault.
Embodiment:
As shown in Figure 3: a kind of intelligent vacuum circuit breaker online monitoring method may further comprise the steps:
A. described intelligent vacuum circuit breaker on-Line Monitor Device is connected on the vacuum circuit breaker, the sensor of on-Line Monitor Device is arranged in the vacuum circuit breaker;
B. described sensor is gathered in real time to the vacuum circuit breaker trip information, and transfers to control module;
C. described control module is analyzed contrast to the trip information of vacuum circuit breaker, conversion process;
D. the information of handling is directly fed back on on-Line Monitor Device by the acousto-optic mode.
Described control module is analyzed contrast to the trip information of vacuum circuit breaker and is comprised vacuum circuit breaker major loop temperature rise on-line monitoring: in isolating switch one side temperature sensor is installed, under the isolating switch running status, detect loop temperature in real time, by being wirelessly transmitted to controller, the temperature parameter that receives is compared with environment temperature by central processing unit, draw the real-time temperature rise of isolating switch, and with default temperature rise alarming value relatively, in time send alarm.
Described control module is analyzed contrast to the trip information of vacuum circuit breaker and is comprised vacuum circuit breaker arc-chutes vacuum tightness on-line monitoring: in isolating switch one side vacuum sensor is installed, under the isolating switch running status, monitor arc-chutes vacuum tightness in real time, when the detection data exceed the alarming value of user's setting, send alarm.
Described control module is analyzed contrast to the trip information of vacuum circuit breaker and is comprised vacuum circuit breaker over travel on-line monitoring: at isolating switch major loop installation position displacement sensor, the variation of record isolating switch over travel, and accuracy of detection reaches 0.1mm, exceed default alarming value when detecting data, then send alarm.
Described control module is analyzed contrast to the trip information of vacuum circuit breaker and is comprised the monitoring of vacuum circuit breaker tripping operation control loop: the integrity in continuous automatic inspection loop in the isolating switch operational process, will send alarm signal automatically in case the loop disconnects, guarantee that isolating switch comes interim reliable tripping operation in fault.
Temperature rise detects: by temperature sensor detection contact temperature, send it back controller module by wireless mode again, amplify by signal, after the A/D conversion with data storage in specific memory, by single-chip microcomputer data are called, handle.Described controller is analyzed contrast to the major loop temperature rise parameter information of vacuum circuit breaker, conversion process, its flow process is as shown in Figure 4: at first access three-phase contact temperature and environment temperature in storer, obtain the temperature rise of three-phase contact after subtracting each other, compare with device value subsequently, if which has be higher than setting value mutually, then send warning, notify the monitor staff to handle; If normally then do not report to the police, only show the three-phase temperature rise.
Described controller is analyzed contrast to the vacuum tightness parameter information of vacuum circuit breaker, conversion process, its flow process is as shown in Figure 5: the vacuum tightness state by the harmonic components of monitoring in the sine wave changes and detects vacuum circuit breaker, if harmonic components is higher than setting value, then send warning; If be lower than setting value, then isolating switch is working properly.
The excess of stroke detects: by over travel sensor major loop over travel data, send to controller with mV step voltage amount data, handle by sending the data to single-chip microcomputer after amplification, the A/D conversion.Described controller is analyzed contrast to the excess of stroke parameter information of vacuum circuit breaker, conversion process, its flow process as shown in Figure 6: the state of at first judging vacuum circuit breaker, if be in gate-dividing state, then directly point out isolating switch to be in gate-dividing state, do not carry out the excess of stroke and detect, return main interface; If isolating switch is in gate-dividing state, then call the excess of stroke and detect data, and compare with the setting alarming value, if detect the three-phase excess of stroke, directly show excess of stroke value on the display screen all greater than alarming value; If which is arranged less than setting value, be also shown on the display screen, and send alerting signal, remind monitor staff's excess of stroke unusual.
Described controller is analyzed contrast to the trip(ping) circuit of vacuum circuit breaker broken string parameter information, conversion process, its as shown in Figure 7: the state of at first judging vacuum circuit breaker, if be in gate-dividing state, then directly point out isolating switch to be in gate-dividing state, do not carry out the excess of stroke and detect, return main interface; If be in "on" position, then judge trip(ping) circuit, if circuit breaking then sends sound and light alarm, notify the monitor staff to carry out maintenance process, avoid accident to take place, if the loop conducting then shows normally.
Above-mentioned trip information to vacuum circuit breaker is analyzed contrast and is comprised one of following:
Vacuum circuit breaker major loop temperature rise on-line monitoring, be temperature sensor to be installed in isolating switch one side, under the isolating switch running status, detect loop temperature in real time, by being wirelessly transmitted to controller, the temperature parameter that receives is compared with environment temperature by central processing unit, draw the real-time temperature rise of isolating switch, and compare, in time send alarm with default temperature rise alarming value.Temperature rise warning numerical value has 40,45,50,55,60,65,70,75, and the user can be provided with alarming value by own demand.Because of becoming flexible of connector behind primary circuit mismatch error or the long-play, contact resistance is increased, thereby cause the primary circuit to produce superheating phenomenon, quicken the aging of insulating part, very easily cause the generation of insulation fault.Based on this point, we need monitor the resistance of primary circuit or the temperature rise under the running status at any time.By on-line monitoring to the temperature rise of vacuum circuit breaker major loop, reached the purpose that the real-time temperature rise of vacuum circuit breaker is monitored in real time, reduced unnecessary power failure test and maintenance, improved the reliability of electric system.
Vacuum circuit breaker arc-chutes vacuum tightness on-line monitoring is in isolating switch one side vacuum sensor to be installed, and monitors arc-chutes vacuum tightness under the isolating switch running status in real time, when the detection data exceed the alarming value of user's setting, sends alarm.The vacuum tightness of arc-chutes is not constant, and along with the prolongation of storage and service time, inner vacuum tightness has lasting decline; This is because of the vacuum state of arc-chutes inside and the atmosphere outside state exists pressure difference and the gas molecular conecentration is poor, infiltration by small opening and various approach, gas molecule in the atmosphere can enter arc-chutes inside in various degree, and the venting of interior metal part, even, the arc-chutes internal vacuum is descended because of major loop assembles the back corrugated tube damage that works long hours that reason causes.Under the serious situation about revealing of vacuum tightness, carry out short circuit interruption, will cause serious consequence.Vacuum circuit breaker arc-chutes vacuum tightness on-Line Monitor Device is equipped with inductive probe in isolating switch major loop one side, monitors arc-chutes vacuum tightness under the isolating switch running status in real time; When certain phase major loop vacuum tightness does not satisfy relevant criterion, then send the warning message, remind the operations staff in time to overhaul, guarantee that vacuum circuit breaker can long-time running under the situation of forfeiture connecting-disconnecting function, the generation of stopping disjunction failure fault.
Vacuum circuit breaker over travel on-line monitoring is at isolating switch major loop side installation position displacement sensor, the variation of record isolating switch over travel, and accuracy of detection reaches 0.1mm, exceeds default alarming value when detecting data, then sends alarm.Excess of stroke numerical range 2~4mm, when being provided with, 0.1mm one lattice have 20 lattice altogether, by once adding 1 lattice.The electric life of vacuum circuit breaker arc-chutes is exactly the open and close times of rated short circuit current, perhaps the open and close times of rated operational current.The electric life of vacuum circuit breaker arc-chutes can be determined according to the wearing and tearing thickness (dynamic and static contact total) that vacuum arc-extinguishing chamber contact allows.It depends primarily on the size of contact material, structure and the dropout current of vacuum interrupter.Allow wearing and tearing thickness to determine that the electric life of vacuum circuit breaker is not only easy but also reliable method with contact at present.Along with the wearing and tearing of dynamic/static contact, the touch spring decrement has corresponding reduction, causes final contact precompression and end pressure all can descend simultaneously.Current all arc-chutes have all been done concrete regulation to contact head abrasive loss and contact terminate pressure, as parameter above-mentioned variation take place, and then can close and cut-off and cause serious consequence the pass of isolating switch.Can send alarm by vacuum circuit breaker over travel on-line measuring device, remind the operations staff in time to adjust, improve the specific aim of maintenance, reduce maintenance cost.
The monitoring of vacuum circuit breaker tripping operation control loop is the integrity in continuous automatic inspection loop in the isolating switch operational process, will send alarm signal automatically in case the loop disconnects, and guarantees that isolating switch comes interim reliable tripping operation in fault.
By being set, a plurality of sensors of various types obtain multinomial measurement parameter, running status to vacuum circuit breaker is monitored in real time, reduce unnecessary power failure test and maintenance, reduce maintenance workload, reduce maintenance cost, improve the specific aim of maintenance, realized the robotization of on-line monitoring information processing, significantly improve the reliability of electric system, greatly reduce personnel's working strength.And this device interface is attractive in appearance, and is simple to operate, easy to use.
With above-mentioned foundation desirable embodiment of the present invention is enlightenment, and by above-mentioned description, the related work personnel can carry out various change and modification fully in the scope that does not depart from this invention technological thought.The technical scope of this invention is not limited to the content on the instructions, must determine its technical scope according to the claim scope.

Claims (5)

1. intelligent vacuum circuit breaker online monitoring method, it is characterized in that: this method may further comprise the steps:
A. the intelligent vacuum circuit breaker on-Line Monitor Device is connected on the vacuum circuit breaker, the sensor of on-Line Monitor Device is arranged in the vacuum circuit breaker;
B. described sensor is gathered in real time to the vacuum circuit breaker trip information, and transfers to control module;
C. described control module is analyzed contrast to the trip information of vacuum circuit breaker, conversion process;
D. the information of handling is directly fed back on on-Line Monitor Device by the acousto-optic mode.
2. intelligent vacuum circuit breaker online monitoring method according to claim 1, it is characterized in that: described described control module is analyzed contrast to the trip information of vacuum circuit breaker and is comprised vacuum circuit breaker major loop temperature rise on-line monitoring: in isolating switch one side temperature sensor is installed, under the isolating switch running status, detect loop temperature in real time, by being wirelessly transmitted to controller, the temperature parameter that receives is compared with environment temperature by central processing unit, draw the real-time temperature rise of isolating switch, and with default temperature rise alarming value relatively, in time send alarm.
3. intelligent vacuum circuit breaker online monitoring method according to claim 1, it is characterized in that: described control module is analyzed contrast to the trip information of vacuum circuit breaker and is comprised vacuum circuit breaker arc-chutes vacuum tightness on-line monitoring: in isolating switch one side vacuum sensor is installed, under the isolating switch running status, monitor arc-chutes vacuum tightness in real time, when the detection data exceed the alarming value of user's setting, send alarm.
4. intelligent vacuum circuit breaker online monitoring method according to claim 1, it is characterized in that: described control module is analyzed contrast to the trip information of vacuum circuit breaker and is comprised vacuum circuit breaker over travel on-line monitoring: at isolating switch major loop installation position displacement sensor, the variation of record isolating switch over travel, and accuracy of detection reaches 0.1mm, exceed default alarming value when detecting data, then send alarm.
5. intelligent vacuum circuit breaker online monitoring method according to claim 1, it is characterized in that: described control module is analyzed contrast to the trip information of vacuum circuit breaker and is comprised the monitoring of vacuum circuit breaker tripping operation control loop: the integrity in continuous automatic inspection loop in the isolating switch operational process, will send alarm signal automatically in case the loop disconnects, guarantee that isolating switch comes interim reliable tripping operation in fault.
CN 201010176975 2010-05-20 2010-05-20 Intelligent vacuum circuit breaker online monitoring method Pending CN101825684A (en)

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CN101858958A (en) * 2010-05-20 2010-10-13 常州市明及电气技术开发有限公司 Intelligent device and method for monitoring vacuum circuit breaker on line
CN102324337A (en) * 2011-08-05 2012-01-18 安徽鑫龙电器股份有限公司 Circuit breaker with vacuum degree online monitoring function and monitoring method for circuit breaker
CN102522269A (en) * 2011-12-27 2012-06-27 日新恒通电气有限公司 Intelligent circuit breaker
CN103050326A (en) * 2012-12-31 2013-04-17 青岛特锐德电气股份有限公司 Integrated intelligent vacuum permanent magnet circuit breaker
CN103606483A (en) * 2013-11-23 2014-02-26 浙江紫光电器有限公司 Vacuum degree monitoring device for high voltage vacuum circuit breaker arc extinguish chamber
CN103675667A (en) * 2013-12-17 2014-03-26 北京合锐赛尔电力科技有限公司 Load switch electrical endurance monitoring system and method
CN104049211A (en) * 2014-07-10 2014-09-17 南车株洲电力机车有限公司 Fault detection device and breaker
CN104330725A (en) * 2014-10-22 2015-02-04 南京工程学院 Sound and light alarm device for substation circuit breaker fault tripping
CN104635153A (en) * 2015-02-07 2015-05-20 福州大学 Low-voltage circuit breaker feature test analysis platform
CN107192941A (en) * 2017-05-03 2017-09-22 广州供电局有限公司 The analysis method and management method of breaker dynamic load ability
CN108418175A (en) * 2018-02-26 2018-08-17 海宁鼎合工程技术开发有限公司 A kind of intelligent grid overload current broken circuit protecting equipment of high sensitivity
CN110931316A (en) * 2019-11-26 2020-03-27 重庆望变电气(集团)股份有限公司 Intelligent circuit breaker

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Publication number Priority date Publication date Assignee Title
CN101858958A (en) * 2010-05-20 2010-10-13 常州市明及电气技术开发有限公司 Intelligent device and method for monitoring vacuum circuit breaker on line
CN102324337A (en) * 2011-08-05 2012-01-18 安徽鑫龙电器股份有限公司 Circuit breaker with vacuum degree online monitoring function and monitoring method for circuit breaker
CN102522269A (en) * 2011-12-27 2012-06-27 日新恒通电气有限公司 Intelligent circuit breaker
CN102522269B (en) * 2011-12-27 2016-08-24 日新恒通电气有限公司 Intelligent breaker
CN103050326A (en) * 2012-12-31 2013-04-17 青岛特锐德电气股份有限公司 Integrated intelligent vacuum permanent magnet circuit breaker
CN103606483A (en) * 2013-11-23 2014-02-26 浙江紫光电器有限公司 Vacuum degree monitoring device for high voltage vacuum circuit breaker arc extinguish chamber
CN103606483B (en) * 2013-11-23 2015-07-15 浙江紫光电器有限公司 Vacuum degree monitoring device for high voltage vacuum circuit breaker arc extinguish chamber
CN103675667A (en) * 2013-12-17 2014-03-26 北京合锐赛尔电力科技有限公司 Load switch electrical endurance monitoring system and method
CN103675667B (en) * 2013-12-17 2017-02-15 北京合锐赛尔电力科技股份有限公司 Load switch electrical endurance monitoring system and method
CN104049211A (en) * 2014-07-10 2014-09-17 南车株洲电力机车有限公司 Fault detection device and breaker
CN104330725A (en) * 2014-10-22 2015-02-04 南京工程学院 Sound and light alarm device for substation circuit breaker fault tripping
CN104635153A (en) * 2015-02-07 2015-05-20 福州大学 Low-voltage circuit breaker feature test analysis platform
CN104635153B (en) * 2015-02-07 2017-06-06 福州大学 Low-voltage circuit breaker characteristic test analysis platform
CN107192941A (en) * 2017-05-03 2017-09-22 广州供电局有限公司 The analysis method and management method of breaker dynamic load ability
CN107192941B (en) * 2017-05-03 2021-02-05 广州供电局有限公司 Analysis method and management method for dynamic load capacity of circuit breaker
CN108418175A (en) * 2018-02-26 2018-08-17 海宁鼎合工程技术开发有限公司 A kind of intelligent grid overload current broken circuit protecting equipment of high sensitivity
CN108418175B (en) * 2018-02-26 2020-01-07 温州盛淼工业设计有限公司 High-sensitivity intelligent power grid overload current circuit breaking protection device
CN110931316A (en) * 2019-11-26 2020-03-27 重庆望变电气(集团)股份有限公司 Intelligent circuit breaker

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