CN106680708A - Electrical life test monitoring protector for low-voltage alternating-current circuit breaker and application thereof - Google Patents

Electrical life test monitoring protector for low-voltage alternating-current circuit breaker and application thereof Download PDF

Info

Publication number
CN106680708A
CN106680708A CN201710163266.1A CN201710163266A CN106680708A CN 106680708 A CN106680708 A CN 106680708A CN 201710163266 A CN201710163266 A CN 201710163266A CN 106680708 A CN106680708 A CN 106680708A
Authority
CN
China
Prior art keywords
test
current
circuit breaker
technologies
low voltage
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.)
Granted
Application number
CN201710163266.1A
Other languages
Chinese (zh)
Other versions
CN106680708B (en
Inventor
周俊刚
董强
尚兆霞
郝静
高志
高志一
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shandong Institute for Product Quality Inspection
Original Assignee
Shandong Institute for Product Quality Inspection
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shandong Institute for Product Quality Inspection filed Critical Shandong Institute for Product Quality Inspection
Priority to CN201710163266.1A priority Critical patent/CN106680708B/en
Publication of CN106680708A publication Critical patent/CN106680708A/en
Application granted granted Critical
Publication of CN106680708B publication Critical patent/CN106680708B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
    • G01R31/3277—Testing of circuit interrupters, switches or circuit-breakers of low voltage devices, e.g. domestic or industrial devices, such as motor protections, relays, rotation switches
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
    • G01R1/36—Overload-protection arrangements or circuits for electric measuring instruments
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
    • G01R31/3277—Testing of circuit interrupters, switches or circuit-breakers of low voltage devices, e.g. domestic or industrial devices, such as motor protections, relays, rotation switches
    • G01R31/3278—Testing of circuit interrupters, switches or circuit-breakers of low voltage devices, e.g. domestic or industrial devices, such as motor protections, relays, rotation switches of relays, solenoids or reed switches

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
  • Testing Electric Properties And Detecting Electric Faults (AREA)

Abstract

The invention relates to an electrical life test monitoring protector for a low-voltage alternating-current circuit breaker and application thereof and relates to testing of circuit breakers; the electrical life test monitoring protector comprises a monitor, an industrial personal computer, a PLC (personal logic controller) module, three voltage acquisition modules, a current acquisition module, a vacuum breaker, a buzzer and three current measuring coils; the electrical life test monitoring protector is applied to provide electrical life test monitoring protection for a low-voltage alternating-current circuit breaker by: acquiring real-time data of key parameters, establishing a fault model, carrying out comprehensive evaluation, and making corresponding fault judgment. The defects of the prior art are overcome that the five key parameters of the electrical life test process of a low-voltage alternating-current circuit breaker, namely rated voltage, rated current, power-on time, interval and test times, are monitored incompletely, simultaneous monitoring is failed, certain faults cannot be discovered in time and protective measures cannot be taken timely in the case of faults occurring.

Description

The electrical endurance test monitoring protection device of Technologies for AC Low Voltage Circuit Breakers and its application
Technical field
Technical scheme is related to the test of circuit-breaker, the specifically electric longevity of Technologies for AC Low Voltage Circuit Breakers Life test monitoring protection device and its application.
Background technology
Technologies for AC Low Voltage Circuit Breakers is widely used in power system power transmission and distribution, and product type is more, for example, air circuit breaker Device, breaker of plastic casing, miniature circuit breaker and residual current action breaker.According to actually used situation Technologies for AC Low Voltage Circuit Breakers one As be applied to rated voltage be less than 1140V, rated current be less than 6300A, frequency for 50Hz industrial and agricultural production and resident In daily life.Technologies for AC Low Voltage Circuit Breakers needs to carry out closed and disconnected operation in line maintenance and routine use process, in order to Ensure that Technologies for AC Low Voltage Circuit Breakers there are enough closed and disconnected number of operations.Low pressure friendship is defined in above-mentioned products standards Stream chopper carries out number of times, the frequency of closed and disconnected operation under the rated current and rated voltage of electrical service life testing system Rate and time, the project is referred to as the electrical endurance test of Technologies for AC Low Voltage Circuit Breakers.
The electrical endurance test ordinary test cycle of Technologies for AC Low Voltage Circuit Breakers is longer, dangerous larger, the process of the test of test In when there are abnormal conditions testing crew be difficult to find by external inspection, thereby tend to can when there are urgent abnormal conditions because Process causes not in time accidents caused, causes damage.Such as certain model Technologies for AC Low Voltage Circuit Breakers was tested carrying out electrical endurance The mechanical operating mechanism failure of handle in journey, testing crew from external observation handle carrying out normal closed and disconnected operation, But the inside contact of Technologies for AC Low Voltage Circuit Breakers is always maintained at closure state.Contact is kept closed so that electrical endurance test With the presence of electric current in system, heat can be produced according to the presence of Joule's law reasoning electric current, persistently producing substantial amounts of heat can not Distribute in time, as a result can in electrical service life testing system initiation fire, cause huge economic loss.
CN201620149190.8 discloses circuit breakers monitoring device and chopper, and the device includes：It is sequentially connected electrically Wire-less inductive devices, controller, output module and sensor label, by institute on the switch of wire-less inductive devices monitoring breaker Whether the sensor label of installation can be sensed, realizes the monitoring of the on off state to chopper；CN105629160A is disclosed A kind of chopper on-line monitoring system, including signal conditioning circuit, isolating amplifier circuit, power module, application circuit, controller And control main frame, it is analyzed by the current signal to divide-shut brake coil, the type of action of primary cut-out is carried out substantially Judgement；CN105785264A discloses a kind of State-Inspect of High-Voltage Circuit device, including fault alarm contact and status monitoring list Unit, by sensor the fault trip shape that the fault alarm contact occurs the position judgment chopper after position change is sensed State；ZL201110263562.1 discloses a kind of state monitoring system for circuit breaker, including chopper, State-Inspect of High-Voltage Circuit module And monitoring device, State-Inspect of High-Voltage Circuit module is by the movable parts position of monitoring breaker come monitoring breaker conjunction Lock, gate-dividing state or fault trip state.
It is rated voltage, rated current and time that circuit-breaker status change most direct key parameter, by these ginsengs Number is monitored the change that can more accurately grasp circuit-breaker status.For the chopper of different size model, electrical endurance examination Various failures are likely to occur during testing, if monitoring parameter is imperfect, can cause correctly to judge, when breaking down Protective measure can not in time be taken.Although above-mentioned prior art is monitored to the working condition of chopper, there is prison Blind spot is surveyed, the data information acquisition for monitoring parameter is imperfect, can cause correctly to judge, can not be timely when breaking down Take the defect of protective measure.
The content of the invention
The technical problem to be solved is：The electrical endurance test monitoring protection dress of Technologies for AC Low Voltage Circuit Breakers is provided Put and its apply, the device includes watch-dog, industrial computer, PLC module, three voltage acquisition modules, current acquisition module, vacuum Chopper, buzzer and three current measurement coils, from by the real-time data acquisition to key parameter in its application, set up event Barrier model, carries out overall merit, makes corresponding failure judgement, realizes that the electrical endurance test monitoring to Technologies for AC Low Voltage Circuit Breakers is protected Shield, overcomes prior art and exists in the electrical endurance process of the test of Technologies for AC Low Voltage Circuit Breakers to rated voltage, rated current, logical This five key parameter monitorings of electric time, interval time and test number (TN) are imperfect, it is impossible to while be monitored, to some failures Phenomenon can not in time take the defect of protective measure when can not in time find and break down.
The present invention solves the technical scheme that adopted of the technical problem：The electrical endurance test prison of Technologies for AC Low Voltage Circuit Breakers Protection device is surveyed, its composition includes watch-dog, industrial computer, PLC module, three voltage acquisition modules, current acquisition module, vacuum Chopper, eight parts of buzzer and three current measurement coils；The connected mode of above-mentioned part is：Watch-dog is arranged on industry control On machine, industrial computer by data wire connection be connected with PLC module, PLC module further through data wire connection respectively with three voltages Acquisition module and current acquisition module connect, and current acquisition module is connected respectively by wire with three current measurement coils, work Connected by PLC module between control machine and vacuum circuit breaker, buzzer is connected by wire with PLC module；Above-mentioned all parts Between operation operational relation be：Watch-dog is arranged on industrial computer, and watch-dog shows the real time data of industrial computer transmission, including The oscillogram and peak value of test voltage oscillogram and peak value and test current, the numerical value of conduction time, the numerical value of interval time and The numerical value of test number (TN), setup parameter includes peak value, the peak value of setting electric current, the number of conduction time of setting voltage in watch-dog The numerical value of value, the numerical value of interval time and test number (TN), and entered by the real time data and setup parameter to above-mentioned five parameters Row overall merit, draws whether the logical judgment of abnormal conditions in process of the test；Industrial computer passes through data wire with PLC module Connection, the digital signal that PLC module is collected is transferred in real time industrial computer；PLC module is distinguished further through data wire connection It is connected with three voltage acquisition modules and current acquisition module, the voltage analog signal conversion that three voltage acquisition modules are collected It is digital data transmission to PLC module, the current analog signal for sensing is passed to current acquisition mould by three current measurement coils Block, the current analog signal that current acquisition module is collected is converted to digital data transmission to PLC module；Industrial computer and vacuum are disconnected Connected by PLC module between the device of road, watch-dog is arranged on industrial computer, and watch-dog is communicated with PLC module, it is remote to realize Journey vacuum circuit breaker is closed and disjunction operation；Buzzer is connected by wire with PLC module, when electrical endurance test During when there are abnormal conditions, buzzer sends chimes of doom.
The electrical endurance test monitoring protection device of above-mentioned Technologies for AC Low Voltage Circuit Breakers, is provided with following in the watch-dog Monitoring programme flow process：
The first step, is set for five key parameters of the Technologies for AC Low Voltage Circuit Breakers of electrical endurance test：
Before the electrical endurance on-test of Technologies for AC Low Voltage Circuit Breakers, testing crew is low according to this in watch-dog program The requirement of the electrical endurance process of the test of pressure AC circuit breaker, five crucial ginsengs of the Technologies for AC Low Voltage Circuit Breakers for setting the test Number：Including voltage peak UP, current peak IP, conduction time T, t interval time and test number (TN) N；
Second step, sets up five kinds of fault models of the electrical endurance test of Technologies for AC Low Voltage Circuit Breakers：
Testing crew sets up five kinds of fault models of the electrical endurance test of Technologies for AC Low Voltage Circuit Breakers in watch-dog program： Including voltage failure model, current failure model, conduction time fault model, fault model interval time and test number (TN) failure Model；
3rd step, shows and is input into the real time data of five key parameters：
Three voltage acquisition modules gather test voltage data in the electrical endurance process of the test of Technologies for AC Low Voltage Circuit Breakers, Three current measurement coils and current acquisition module collection test current data, above-mentioned two groups of data utilize number by PLC module Connect real-time Transmission to industrial computer according to line, and show the ripple of test voltage oscillogram and peak value and test current on a monitor The numerical value of shape figure and peak value, the numerical value of conduction time, the numerical value of interval time and test number (TN)；The number transmitted by PLC module According to data analysiss are carried out, the real time data of five key parameters is input into in watch-dog：Including test voltage peak value US, test electricity Stream peak IS, actual conduction time TS, actual interval time tSWith test number (TN) NS；
4th step, judges whether the numerical value of real time data is abnormal：
By the real time data and the first step of five parameters to being input into in watch-dog in above-mentioned 3rd step in watch-dog Five key parameters of the Technologies for AC Low Voltage Circuit Breakers of the electrical endurance test set in program carry out overall merit, through numeric ratio It is relatively whether abnormal to judge the numerical value of real time data；
5th step, fixes a breakdown：
When it is abnormal that above-mentioned 4th step judges the numerical value of real time data, that is, show the electrical endurance of Technologies for AC Low Voltage Circuit Breakers There occurs one or more failures in five kinds of fault models in above-mentioned second step in test, watch-dog send fix a breakdown it is dynamic Instruct, vacuum circuit breaker carries out disjunction, while buzzer sounds the alarm, testing crew goes to testing ground to check and excludes event Barrier, pending fault is excluded, watch-dog restarting, repeats above-mentioned from the first step to the 4th step.
The electrical endurance test monitoring protection device of above-mentioned Technologies for AC Low Voltage Circuit Breakers, the voltage acquisition module collection exchange Voltage effective value is 1200V to the maximum, and peak value is 2000V；The current measurement coil carries out current acquisition using Luo-coil, hands over Stream current effective value is 10kA to the maximum, and peak value is 20kA.
The electrical endurance test monitoring protection device of above-mentioned Technologies for AC Low Voltage Circuit Breakers, in addition to watch-dog, involved its His part passes through commercially available, and the method for attachment between all parts is that those skilled in the art will appreciate that.
The application of the electrical endurance test monitoring protection device of above-mentioned Technologies for AC Low Voltage Circuit Breakers, is applied to low-voltage alternating-current open circuit The electrical endurance test of device, operating procedure is as follows：
The first step, start
The electrical endurance test monitoring protection device of Technologies for AC Low Voltage Circuit Breakers is switched on power first, device power-up starts, Check whether each several part components and parts are normal, if exception, check reason and exclude exception, it is normal to starting up；
Second step, sets five key parameters, carries out real-time data acquisition：
Before the electrical endurance on-test of Technologies for AC Low Voltage Circuit Breakers, testing crew setting voltage peak value in watch-dog UP, setting electric current peak IP, setting conduction time T, setting t interval time and setting test number (TN) N, it is then disconnected in low-voltage alternating-current Three voltage acquisition modules gather test voltage data, three current measurement coils and electricity in the electrical endurance process of the test of road device Stream acquisition module collection test current data, above-mentioned two groups of data connect real-time Transmission to work by PLC module using data wire Control machine, and oscillogram and peak value, the conduction time of test voltage oscillogram and peak value and test current are shown on a monitor Numerical value, the numerical value of interval time and test number (TN) numerical value, last watch-dog carries out data by the data that PLC module is transmitted Analysis, collects test voltage peak value US, test current peak IS, actual conduction time TS, actual interval time tSAnd test Times NSThe real-time parameter of this five data, completes real-time data acquisition；
3rd step, sets up the electrical endurance testing failure model of Technologies for AC Low Voltage Circuit Breakers：
After above-mentioned second step, testing crew sets up the electrical endurance of Technologies for AC Low Voltage Circuit Breakers in the program of watch-dog Five kinds of fault models of test, including following voltage failure model, current failure model, conduction time fault model, interval Time failure model and test number (TN) fault model：
(3.1) voltage failure model, its corresponding failure is more than 1.1 times for the test voltage peak value of Technologies for AC Low Voltage Circuit Breakers Setting voltage peak value, can cause the insulation of AC circuit breaker breakdown, or less than 0.9 times of setting voltage peak value, experiment power supply It is unsatisfactory for test requirements document,
(3.2) current failure model, its corresponding failure is less than 0.9 times for the test current peak value of Technologies for AC Low Voltage Circuit Breakers Setting electric current peak value is unsatisfactory for test current requirement, or more than 1.1 times of setting electric current peak values three-phase contact abrasion can be caused tight Again prevent a wherein phase contact is from closing, or there are other short-circuit conditions,
(3.3) conduction time fault model, its corresponding failure is more than for the actual conduction time of Technologies for AC Low Voltage Circuit Breakers The conduction time of 1.2 times of settings, contact melting welding, the handle operation machine of Technologies for AC Low Voltage Circuit Breakers of Technologies for AC Low Voltage Circuit Breakers can be caused Structure is damaged and causes contact to be unable to disjunction,
(3.4) fault model interval time, its corresponding failure is more than for the actual interval time of Technologies for AC Low Voltage Circuit Breakers The interval time of 1.2 times of settings, electrical endurance test operation device can be caused to break down so that Technologies for AC Low Voltage Circuit Breakers does not have Normally closed or electrical service life testing system break down so that the interval for occurring between test current twice is long,
(3.5) test number (TN) fault model, its corresponding failure is more than for the accumulation test number (TN) of Technologies for AC Low Voltage Circuit Breakers The test number (TN) of setting, when Technologies for AC Low Voltage Circuit Breakers electrical endurance test accumulation test number (TN) exceedes setting test number (TN), and it is electric Gas life test backup actuating device continues to carry out closed and disconnected operation to Technologies for AC Low Voltage Circuit Breakers, and electrical endurance can be caused to try Requiring more than test number (TN) occurs in check system, more than the failure of test requirements document；
4th step, function debugging：
After above-mentioned 3rd step, testing crew exists according to a fault model corresponding in above-mentioned five kinds of fault models Function debugging is carried out on watch-dog 1, now the function debugging of remaining fault model temporarily fails,
(4.1) voltage failure model protection function debugging：
Wire is selected to be connected the input of three voltage acquisition modules with the end input of vacuum circuit breaker, when vacuum is broken Road device output voltage peak value USMore than 1.1UPWhen, the automatic disjunction of vacuum circuit breaker, vacuum circuit breaker is remained off, buzzer Sound the alarm；As vacuum circuit breaker input terminal voltage peak value USLess than 0.9UPWhen, the automatic disjunction of vacuum circuit breaker, vacuum circuit breaker Device is remained off, and buzzer sounds the alarm；As vacuum circuit breaker input terminal voltage peak value USMore than or equal to 0.9UPAnd Less than or equal to 1.1UPWhen, vacuum circuit breaker is kept closed, and buzzer does not sound the alarm, and above-mentioned three kinds of situations repeat to grasp Make three times, the function of voltage failure model protection can be realized every time；
(4.2) current failure model protection function debugging：
Wire is selected to be connected the input of current acquisition module with the secondary side of three current measurement coils, when low pressure is handed over The test current peak I that stream chopper electrical service life testing system is producedSMore than 1.1IPWhen, the automatic disjunction of vacuum circuit breaker, very Empty chopper is remained off, and buzzer sounds the alarm, when the generation of Technologies for AC Low Voltage Circuit Breakers electrical service life testing system Test current peak ISLess than 0.9IPWhen, the automatic disjunction of vacuum circuit breaker, vacuum circuit breaker is remained off, and buzzer sends Alarm song, when the test current peak I that Technologies for AC Low Voltage Circuit Breakers electrical service life testing system is producedSMore than or equal to 0.9IPAnd it is little In equal to 1.1IPWhen, vacuum circuit breaker is kept closed, and buzzer does not sound the alarm, above-mentioned three kinds of situation repetitive operations Three times, the function of current failure model protection can be realized every time；
(4.3) conduction time fault model defencive function debugging：
Wire is selected to be connected the input of current acquisition module with the secondary side of three current measurement coils, electrical endurance The test current persistent period that pilot system is produced is TS, when the test that Technologies for AC Low Voltage Circuit Breakers electrical service life testing system is produced Current duration TSDuring more than 1.2T, the automatic disjunction of vacuum circuit breaker, vacuum circuit breaker is remained off, and buzzer sends Alarm song, when the test current duration T that Technologies for AC Low Voltage Circuit Breakers electrical service life testing system is producedSDuring less than 0.8T, very The automatic disjunction of empty chopper, vacuum circuit breaker is remained off, and buzzer sounds the alarm, when Technologies for AC Low Voltage Circuit Breakers it is electric The test current duration T that service life experiment system is producedSDuring more than or equal to 0.8T and less than or equal to 1.2T, vacuum circuit breaker It is kept closed, buzzer does not sound the alarm, above-mentioned three kinds of situation repetitive operations three times can realize every time conduction time The function of fault model protection；
(4.4) fault model interval time defencive function debugging：
Wire is selected to be connected the input of current acquisition module with the secondary side of three current measurement coils, electrical endurance The test current interval time that pilot system is produced is tS, when the test that Technologies for AC Low Voltage Circuit Breakers electrical service life testing system is produced The current intervals time is tSDuring more than 1.2t, the automatic disjunction of vacuum circuit breaker, vacuum circuit breaker is remained off, and buzzer is sent out Go out alarm song, be t when the test current interval time that Technologies for AC Low Voltage Circuit Breakers electrical service life testing system is producedSLess than 0.8t When, the automatic disjunction of vacuum circuit breaker, vacuum circuit breaker is remained off, and buzzer sounds the alarm, when low-voltage alternating-current open circuit The test current interval time that device electrical service life testing system is produced is tSDuring more than or equal to 0.8t and less than or equal to 1.2t, very Empty chopper is kept closed, and buzzer does not sound the alarm, above-mentioned three kinds of situation repetitive operations three times, can realize every time The function of fault model protection interval time；
(4.5) test number (TN) fault model defencive function debugging：
Wire is selected to be connected the input of current acquisition module with the secondary side of three current measurement coils, electrical endurance It is N that pilot system produces test current number of timesS, when Technologies for AC Low Voltage Circuit Breakers electrical service life testing system produces test current number of times For NSDuring equal to N, the automatic disjunction of vacuum circuit breaker, vacuum circuit breaker is remained off, and buzzer sounds the alarm, and works as low pressure It is N that AC circuit breaker electrical service life testing system produces test current number of timesSDuring more than N, vacuum circuit breaker is remained off, Buzzer sounds the alarm, and is N when Technologies for AC Low Voltage Circuit Breakers electrical service life testing system produces test current number of timesSDuring less than N, Vacuum circuit breaker is kept closed, and buzzer does not sound the alarm, above-mentioned three kinds of situation repetitive operations three times, every time can be real The function of existing test number (TN) fault model protection,
After the debugging of all fault model defencive functions is completed, then the electrical endurance test of Technologies for AC Low Voltage Circuit Breakers is supervised After surveying the normal startup of protection device, vacuum circuit breaker is in closure state；
5th step, to carrying out overall merit by the Technologies for AC Low Voltage Circuit Breakers of test monitoring electrical endurance, makes corresponding failure Judge：
(5.1) U is worked asS>1.1UPOr US<0.9UPWhen be judged as voltage failure model, wherein, work as US>1.1UPWhen, judge For voltage failure, watch-dog sends instruction, and long-range disjunction vacuum circuit breaker, while buzzer sounds the alarm, works as US<0.9UP When, it is judged as voltage failure, watch-dog sends instruction, long-range disjunction vacuum circuit breaker, while buzzer sounds the alarm, when 1.1UP≥US≥0.9UPWhen, it is judged as not breaking down, watch-dog does not send instruction, and vacuum circuit breaker is kept closed, honeybee Ring device does not sound the alarm；
(5.2) I is worked asS>1.1IPOr IS<0.9IPWhen be judged as current failure model, wherein, work as IS>1.1IPWhen, judge For current failure, watch-dog sends instruction, and long-range disjunction vacuum circuit breaker, while buzzer sounds the alarm, works as IS<0.9IP When, it is judged as current failure, watch-dog sends instruction, long-range disjunction vacuum circuit breaker, while buzzer sounds the alarm, when 1.1IP≥IS≥0.9IPWhen, it is judged as not breaking down, watch-dog does not send instruction, and vacuum circuit breaker is kept closed, honeybee Ring device does not sound the alarm, the evaluation of current failure model need conduction time in evaluated, do not carry out within interval time Evaluate；
(5.3) T is worked asS>1.2T or TS<It is judged as conduction time fault model during 0.8T, wherein, work as TS>During 1.2T, sentence Break as conduction time failure, watch-dog sends instruction, and long-range disjunction vacuum circuit breaker, while buzzer sounds the alarm, works as TS< During 0.8T, it is judged as conduction time failure, watch-dog sends instruction, long-range disjunction vacuum circuit breaker, while buzzer sends police Report sound, as 1.2T >=TSDuring >=0.8T, it is judged as not breaking down, watch-dog does not send instruction, vacuum circuit breaker is remained closed State, buzzer does not sound the alarm；
(5.4) t is worked asS>1.2t or tS<It is judged as fault model interval time during 0.8t, wherein, work as tS>During 1.2t, judge For failure interval time, watch-dog sends instruction, and long-range disjunction vacuum circuit breaker, while buzzer sounds the alarm, works as tS< During 0.8t, judge to be failure interval time, watch-dog sends instruction, long-range disjunction vacuum circuit breaker, while buzzer sends police Report sound, as 1.2t >=tSDuring >=0.8t, it is judged as not breaking down, watch-dog does not send instruction, vacuum circuit breaker is remained closed State, buzzer does not sound the alarm；
(5.5) N is worked asS=N or NS>It is judged as test number (TN) fault model during N, wherein, work as NSDuring=N, it is judged as test Number of times failure, watch-dog sends instruction, long-range disjunction vacuum circuit breaker, and vacuum circuit breaker is remained off, while buzzer Sound the alarm, work as NS>During N, it is judged as test number (TN) failure, watch-dog sends instruction, long-range disjunction vacuum circuit breaker, vacuum Chopper is remained off, while buzzer sounds the alarm, works as NS<During N, it is judged as not breaking down, watch-dog is not sent out Go out instruction, vacuum circuit breaker is kept closed, and buzzer does not sound the alarm；
When a kind of any of the above described failure condition occurs, watch-dog sends instruction, long-range disjunction vacuum circuit breaker, and keeps Off-state, while buzzer sounds the alarm, testing crew to be arrived in first have and investigates failure, and pending fault is excluded, and is proceeded low The electrical endurance test of pressure AC circuit breaker；Overall merit thinks the electrical endurance examination of Technologies for AC Low Voltage Circuit Breakers in the case of remaining Test and be normally carried out, vacuum circuit breaker is kept closed, while buzzer does not sound the alarm；
Above-mentioned US、IS、TS、tS、NSTest voltage peak value, test current peak value, test conduction time, test are mutually should be respectively Interval time, test number (TN), these parameters will in real time include at monitor operations interface according to data acquisition；UP、IP, T, t, N point Setting voltage peak value, setting electric current peak value, setting conduction time, setting interval time, setting test number (TN) are not mutually should be, by trying Testing personnel carries out as needed the actual parameter setting of Technologies for AC Low Voltage Circuit Breakers of electrical endurance test.
The application of the electrical endurance test monitoring protection device of above-mentioned Technologies for AC Low Voltage Circuit Breakers, the conduction time and interval Time minimum reference unit is 0.01ms.
The invention has the beneficial effects as follows：Compared with prior art, the substantive distinguishing features of protrusion of the invention and marked improvement It is as follows：
(1) apparatus of the present invention include watch-dog, industrial computer, PLC module, three voltage acquisition modules, current acquisition module, Vacuum circuit breaker, buzzer and three current measurement coils, its application in based on rated voltage, rated current, conduction time, Every time and test number (TN) this five key parameters, corresponding fault model, i.e. voltage failure model, current failure mould are set up Type, conduction time fault model, fault model interval time and test number (TN) fault model, contrast fault model to judge low Whether break down in the electrical endurance process of the test of pressure AC circuit breaker, from by the real-time data acquisition to key parameter, Overall merit is carried out, corresponding judgement is made, realizes that the electrical endurance test monitoring to Technologies for AC Low Voltage Circuit Breakers is protected, overcome existing With the presence of in the electrical endurance process of the test of technology Technologies for AC Low Voltage Circuit Breakers to rated voltage, rated current, conduction time, interval This five key parameters monitorings of time and test number (TN) are imperfect, it is impossible to while be monitored, to some phenomena of the failure can not and Shi Faxian and protective measure not enough defect is taken when breaking down.
(2) present invention sets up corresponding integrated evaluating method for above-mentioned five fault models, using the side of piecewise function Method considers that the failure to being likely to occur under different experimental conditions is evaluated, and draws corresponding evaluation result comprehensively, that is, adopt Take corresponding protective measure.This design concept is more rigorous, and the situation to being likely to occur considers more comprehensively, it is ensured that low pressure is handed over The suitability of the electrical endurance test monitoring protection device of stream chopper is higher.
(3) present invention chooses a Technologies for AC Low Voltage Circuit Breakers and carries out electrical endurance test, and test number (TN) is 4000 times, test During carry out real protection using the electrical endurance test monitoring protection device of Technologies for AC Low Voltage Circuit Breakers.In electrical endurance test During run into various faults, the electrical endurance test monitoring protection device of Technologies for AC Low Voltage Circuit Breakers is all effectively protected Shield, has reached expected design effect.
(4) three voltage acquisition modules and current acquisition module scope of application width in the present invention, are completely covered different rule The parameter area of lattice Technologies for AC Low Voltage Circuit Breakers, therefore the electrical endurance test monitoring protection device of Technologies for AC Low Voltage Circuit Breakers exists The suitability is more extensive during use.
(5) the electrical endurance test monitoring protection device of Technologies for AC Low Voltage Circuit Breakers of the present invention can be applied not only to low pressure friendship The electrical endurance test of stream chopper, can also be applied to low voltage AC contactor low tension related to low-voltage alternating-current relay etc. Protection is monitored in the device product process of the test similar with electrical endurance test, is with a wide range of applications.
Description of the drawings
With reference to the accompanying drawings and examples the present invention is further described.
Fig. 1 is the composition schematic diagram of apparatus of the present invention.
Fig. 2 is the monitoring programme schematic flow sheet arranged in watch-dog in apparatus of the present invention.
Fig. 3 is the wiring of apparatus of the present invention and Technologies for AC Low Voltage Circuit Breakers electrical service life testing system and Technologies for AC Low Voltage Circuit Breakers Figure.
In figure, 1. watch-dog, 2. industrial computer, 3.PLC modules, 4. three voltage acquisition modules, 5. current acquisition module, 6. Vacuum circuit breaker, 7. buzzer, 8. Technologies for AC Low Voltage Circuit Breakers, the 9. load impedance of electrical service life testing system, 10. three electric currents Measuring coil, the power end A phases of A. electrical service life testing systems, the power end B phases of B. electrical service life testing systems, C. electric longevity The power end C phases of life pilot system, the power end N phases of N. electrical service life testing systems.
Specific embodiment
Embodiment illustrated in fig. 1 shows that the composition of apparatus of the present invention includes watch-dog 1, industrial computer 2,3, three electricity of PLC module Pressure acquisition module 4, current acquisition module 5, vacuum circuit breaker 6,10 8 parts of buzzer 7 and three current measurement coils；On Stating the connected mode of part is：Watch-dog 1 is arranged on industrial computer 2, and industrial computer 2 is connected by data wire connection with PLC module 3 Connect, PLC module 3 is connected respectively further through data wire connection with three voltage acquisition modules 4 and current acquisition module 5, and electric current is adopted Collection module 5 is connected respectively by wire with three current measurement coils 10, and PLC moulds are passed through between industrial computer 2 and vacuum circuit breaker 6 Block 3 connects, and buzzer 7 is connected by wire with PLC module 3；Operation operational relation between above-mentioned all parts is：Watch-dog 1 is arranged on industrial computer 2, and watch-dog 1 shows the real time data of the transmission of industrial computer 2, including test voltage oscillogram and peak value and The oscillogram and peak value of test current, the numerical value of conduction time, the numerical value of the numerical value of interval time and test number (TN), watch-dog 1 Middle setup parameter includes peak value, the peak value of setting electric current, the numerical value of conduction time, the numerical value of interval time and the examination of setting voltage The numerical value of number of times is tested, and overall merit is carried out by the real time data and setup parameter to above-mentioned five parameters, drawn and tested Whether the logical judgment of abnormal conditions there is in journey；Industrial computer 2 is connected with PLC module 3 by data wire, and PLC module 3 is gathered To digital signal be transferred to industrial computer 2 in real time；PLC module 3 further through data wire connect respectively with three voltage acquisition moulds Block 4 and current acquisition module 5 connect, and the voltage analog signal that three voltage acquisition modules 4 are collected is converted to digital signal biography PLC module 3 is defeated by, the current analog signal for sensing is passed to current acquisition module 5 by three current measurement coils 10, and electric current is adopted The current analog signal that collection module 5 is collected is converted to digital data transmission to PLC module 3；Industrial computer 2 and vacuum circuit breaker 6 Between connected by PLC module 3, watch-dog 1 be arranged on industrial computer 2 on, watch-dog 1 is communicated with PLC module 3, with realization It is long-range vacuum circuit breaker 6 is closed and disjunction operation；Buzzer 7 is connected by wire with PLC module 3, when the electric longevity When there are abnormal conditions in life process of the test, buzzer 7 sends chimes of doom.
Embodiment illustrated in fig. 2 shows that the monitoring programme flow process arranged in watch-dog in apparatus of the present invention is：It is set for electricity The electrical endurance test of five key parameters of the Technologies for AC Low Voltage Circuit Breakers of gas life test → set up Technologies for AC Low Voltage Circuit Breakers The numerical value of real time data → the judge real time data of five key parameters of five kinds of fault model → displays and input whether extremely → Fix a breakdown.
Embodiment illustrated in fig. 3 shows that apparatus of the present invention are handed over Technologies for AC Low Voltage Circuit Breakers electrical service life testing system and low pressure Flowing the mode of connection of chopper is：Electrical service life testing system is the wherein electrical endurance being made up of power supply and load impedance Power end A phases A of pilot system, power end B phases B of electrical service life testing system, the power end C phases of electrical service life testing system Power end N phases N of C and electrical service life testing system are tested respectively with vacuum circuit breaker 6, Technologies for AC Low Voltage Circuit Breakers 8, electrical endurance The load impedance 9 of system each phase sequence is sequentially connected in series, and the leading-out terminal of the load impedance 9 of electrical service life testing system is respectively mutually used Wire links together；The primary side of three current measurement coils 10 is air core coil, the power end A of electrical service life testing system Power end C phases C of phase A, power end B phases B of electrical service life testing system and electrical service life testing system are each passed through respective phase Answer the primary side air core coil of the current measurement coil 10 of phase sequence；Three voltage acquisition modules 4 are sequentially connected respectively by wire Power end A phases A of electrical service life testing system, power end B phases B of electrical service life testing system and electrical service life testing system Power end C phases C.
Embodiment 1
The electrical endurance test monitoring protection device of the Technologies for AC Low Voltage Circuit Breakers of the present embodiment, embodiment as shown in Figure 1, its Composition include watch-dog 1, industrial computer 2,3, three voltage acquisition modules 4 of PLC module, current acquisition module 5, vacuum circuit breaker 6, 10 8 parts of buzzer 7 and three current measurement coils；The connected mode of above-mentioned part is：Watch-dog 1 is arranged on industrial computer 2 On, industrial computer 2 by data wire connection be connected with PLC module 3, PLC module 3 further through data wire connection respectively with three voltages Acquisition module 4 and current acquisition module 5 connect, and current acquisition module 5 is connected respectively by wire with three current measurement coils 10 Connect, connected by PLC module 3 between industrial computer 2 and vacuum circuit breaker 6, buzzer 7 is connected by wire with PLC module 3；On The operation operational relation stated between all parts is：Watch-dog 1 is arranged on industrial computer 2, and watch-dog 1 shows that industrial computer 2 is transmitted Real time data, including the oscillogram and peak value of test voltage oscillogram and peak value and test current, the numerical value of conduction time, Every the numerical value and the numerical value of test number (TN) of time, setup parameter includes peak value, the peak of setting electric current of setting voltage in watch-dog 1 The numerical value of value, the numerical value of conduction time, the numerical value of interval time and test number (TN), and by the real-time number to above-mentioned five parameters Overall merit is carried out according to setup parameter, draws whether the logical judgment of abnormal conditions in process of the test；Industrial computer 2 with PLC module 3 is connected by data wire, and the digital signal that PLC module 3 is collected is transferred in real time industrial computer 2；PLC module 3 It is connected with three voltage acquisition modules 4 and current acquisition module 5 respectively further through data wire connection, three voltage acquisition modules 4 The voltage analog signal for collecting is converted to digital data transmission to PLC module 3, and three current measurement coils 10 will be sensed Current analog signal passes to current acquisition module 5, current acquisition module adopt 5 collection to current analog signal be converted to digital signal It is transferred to PLC module 3；Connected by PLC module 3 between industrial computer 2 and vacuum circuit breaker 6, watch-dog 1 is arranged on industrial computer 2 On, watch-dog 1 is communicated with PLC module 3, with realize remotely closing vacuum circuit breaker 6 and disjunction operation；Buzzing Device 7 is connected by wire with PLC module 3, and when there are abnormal conditions in electrical endurance process of the test, buzzer 7 sends warning Sound.
The collection of above-mentioned voltage acquisition module 4 alternating voltage virtual value is 1200V to the maximum, and peak value is 2000V；Current measurement line Circle 10 carries out current acquisition using Luo-coil, and alternating current virtual value is 10kA to the maximum, and peak value is 20kA.
Embodiment 2
It is provided with watch-dog 1 in the electrical endurance test monitoring protection device of the Technologies for AC Low Voltage Circuit Breakers of the present embodiment The monitoring programme flow process that as shown in Figure 2 embodiment shows, the monitoring programme flow process is as follows：
The first step, is set for five key parameters of the Technologies for AC Low Voltage Circuit Breakers of electrical endurance test：
Before the electrical endurance on-test of Technologies for AC Low Voltage Circuit Breakers, testing crew is low according to this in watch-dog program The requirement of the electrical endurance process of the test of pressure AC circuit breaker, five crucial ginsengs of the Technologies for AC Low Voltage Circuit Breakers for setting the test Number：Including voltage peak UP, current peak IP, conduction time T, t interval time and test number (TN) N；
Second step, sets up five kinds of fault models of the electrical endurance test of Technologies for AC Low Voltage Circuit Breakers：
Testing crew sets up five kinds of fault models of the electrical endurance test of Technologies for AC Low Voltage Circuit Breakers in watch-dog program： Including voltage failure model, current failure model, conduction time fault model, fault model interval time and test number (TN) failure Model；
3rd step, shows and is input into the real time data of five key parameters：
Three voltage acquisition modules 4 gather test voltage number in the electrical endurance process of the test of Technologies for AC Low Voltage Circuit Breakers According to, three current measurement coils 10 and the collection test current data of current acquisition module 5, above-mentioned two groups of data pass through PLC module 3 Connect real-time Transmission to industrial computer 2 using data wire, and test voltage oscillogram and peak value and test are shown on watch-dog 1 The oscillogram and peak value of electric current, the numerical value of conduction time, the numerical value of the numerical value of interval time and test number (TN)；By PLC module 3 The data of transmission carry out data analysiss, and the real time data of five key parameters is input into in watch-dog 1：Including test voltage peak value US, test current peak IS, actual conduction time TS, actual interval time tSWith test number (TN) NS；
4th step, judges whether the numerical value of real time data is abnormal：
By the real time data and the first step of five parameters to being input into in watch-dog 1 in above-mentioned 3rd step in watch-dog Five key parameters of the Technologies for AC Low Voltage Circuit Breakers of the electrical endurance test set in program carry out overall merit, through numeric ratio It is relatively whether abnormal to judge the numerical value of real time data；
5th step, fixes a breakdown：
When it is abnormal that above-mentioned 4th step judges the numerical value of real time data, that is, show the electrical endurance of Technologies for AC Low Voltage Circuit Breakers One or more failures in five kinds of fault models in above-mentioned second step are there occurs in test, watch-dog 1 sends fixes a breakdown Action command, vacuum circuit breaker 6 carries out disjunction, while buzzer 7 sounds the alarm, testing crew goes to testing ground to check exclusion Failure, pending fault is excluded, watch-dog restarting, repeats above-mentioned from the first step to the 4th step.
The collection of above three voltage acquisition module 4 alternating voltage virtual value is 1200V to the maximum, and peak value is 2000V；Three electricity Flow measurement coil 10 carries out current acquisition using Luo-coil, and alternating current virtual value is 10kA to the maximum, and peak value is 20kA.
Embodiment 3
The application of the electrical endurance test monitoring protection device of the Technologies for AC Low Voltage Circuit Breakers of the present embodiment, is applied to low pressure friendship The electrical endurance test of stream chopper, operating procedure is as follows：
The first step, start
The electrical endurance test monitoring protection device of Technologies for AC Low Voltage Circuit Breakers is switched on power first, device power-up starts, Check whether each several part components and parts are normal, if exception, check reason and exclude exception, it is normal to starting up；
Second step, sets five key parameters, carries out real-time data acquisition：
Before the electrical endurance on-test of Technologies for AC Low Voltage Circuit Breakers, testing crew setting voltage peak in watch-dog 1 Value UP, setting electric current peak IP, setting conduction time T, setting interval time t and setting test number (TN) N, then in low-voltage alternating-current Three voltage acquisition modules 4 gather test voltage data, three current measurement coils in the electrical endurance process of the test of chopper 10 and the collection test current data of current acquisition module 5, above-mentioned two groups of data are real-time using data wire connection by PLC module 3 Industrial computer 2 is transferred to, and the oscillogram and peak of test voltage oscillogram and peak value and test current are shown on watch-dog 1 The numerical value of value, the numerical value of conduction time, the numerical value of interval time and test number (TN), last watch-dog 1 is transmitted by PLC module 3 Data carry out data analysiss, collect test voltage peak value US, test current peak IS, actual conduction time TS, between reality Every time tSWith test number (TN) NSThe real-time parameter of this five data, completes real-time data acquisition；
3rd step, sets up the electrical endurance testing failure model of Technologies for AC Low Voltage Circuit Breakers：
After above-mentioned second step, testing crew sets up the electric longevity of Technologies for AC Low Voltage Circuit Breakers in the program of watch-dog 1 Life test five kinds of fault models, including following voltage failure model, current failure model, conduction time fault model, Every time failure model and test number (TN) fault model：
(3.1) voltage failure model, its corresponding failure is more than 1.1 times for the test voltage peak value of Technologies for AC Low Voltage Circuit Breakers Setting voltage peak value, can cause the insulation of AC circuit breaker breakdown, or less than 0.9 times of setting voltage peak value, experiment power supply It is unsatisfactory for test requirements document,
(3.2) current failure model, its corresponding failure is less than 0.9 times for the test current peak value of Technologies for AC Low Voltage Circuit Breakers Setting electric current peak value is unsatisfactory for test current requirement, or more than 1.1 times of setting electric current peak values three-phase contact abrasion can be caused tight Again prevent a wherein phase contact is from closing, or there are other short-circuit conditions,
(3.3) conduction time fault model, its corresponding failure is more than for the actual conduction time of Technologies for AC Low Voltage Circuit Breakers The conduction time of 1.2 times of settings, contact melting welding, the handle operation machine of Technologies for AC Low Voltage Circuit Breakers of Technologies for AC Low Voltage Circuit Breakers can be caused Structure is damaged and causes contact to be unable to disjunction,
(3.4) fault model interval time, its corresponding failure is more than for the actual interval time of Technologies for AC Low Voltage Circuit Breakers The interval time of 1.2 times of settings, electrical endurance test operation device can be caused to break down so that Technologies for AC Low Voltage Circuit Breakers does not have Normally closed or electrical service life testing system break down so that the interval for occurring between test current twice is long,
(3.5) test number (TN) fault model, its corresponding failure is more than for the accumulation test number (TN) of Technologies for AC Low Voltage Circuit Breakers The test number (TN) of setting, when Technologies for AC Low Voltage Circuit Breakers electrical endurance test accumulation test number (TN) exceedes setting test number (TN), and it is electric Gas life test backup actuating device continues to carry out closed and disconnected operation to Technologies for AC Low Voltage Circuit Breakers, and electrical endurance can be caused to try Requiring more than test number (TN) occurs in check system, more than the failure of test requirements document；
4th step, function debugging：
After above-mentioned 3rd step, testing crew exists according to a fault model corresponding in above-mentioned five kinds of fault models Function debugging is carried out on watch-dog 1, now the function debugging of remaining fault model temporarily fails,
(4.1) voltage failure model protection function debugging：
Select wire to be connected the input of three voltage acquisition modules 4 with the end input of vacuum circuit breaker 6, work as vacuum The output voltage peak value U of chopper 6SMore than 1.1UPWhen, the automatic disjunction of vacuum circuit breaker 6, vacuum circuit breaker is remained off, honeybee Ring device 7 sounds the alarm；As the input terminal voltage peak value U of vacuum circuit breaker 6SLess than 0.9UPWhen, the automatic disjunction of vacuum circuit breaker 6, Vacuum circuit breaker is remained off, and buzzer 7 sounds the alarm；As the input terminal voltage peak value U of vacuum circuit breaker 6SMore than etc. In 0.9UPAnd less than or equal to 1.1UPWhen, vacuum circuit breaker 6 is kept closed, and buzzer 7 does not sound the alarm, and above-mentioned three The situation of kind repetitive operation three times, can realize every time the function of voltage failure model protection；
(4.2) current failure model protection function debugging：
Wire is selected to be connected the input of current acquisition module 5 with the secondary side of three current measurement coils 10, when low The test current peak I that pressure AC circuit breaker electrical service life testing system is producedSMore than 1.1IPWhen, vacuum circuit breaker 6 divides automatically Disconnected, vacuum circuit breaker is remained off, and buzzer 7 sounds the alarm, when Technologies for AC Low Voltage Circuit Breakers electrical service life testing system The test current peak I of generationSLess than 0.9IPWhen, the automatic disjunction of vacuum circuit breaker 6, vacuum circuit breaker is remained off, honeybee Ring device 7 sounds the alarm, when the test current peak I that Technologies for AC Low Voltage Circuit Breakers electrical service life testing system is producedSIt is more than or equal to 0.9IPAnd less than or equal to 1.1IPWhen, vacuum circuit breaker 6 is kept closed, and buzzer 7 does not sound the alarm, above-mentioned three kinds Situation repetitive operation three times, can realize every time the function of current failure model protection；
(4.3) conduction time fault model defencive function debugging：
Wire is selected to be connected the input of current acquisition module 5 with the secondary side of three current measurement coils 10, electrically The test current persistent period that service life experiment system is produced is TS, when the generation of Technologies for AC Low Voltage Circuit Breakers electrical service life testing system Test current duration TSDuring more than 1.2T, the automatic disjunction of vacuum circuit breaker 6, vacuum circuit breaker is remained off, buzzing Device 7 sounds the alarm, when the test current duration T that Technologies for AC Low Voltage Circuit Breakers electrical service life testing system is producedSIt is less than During 0.8T, the automatic disjunction of vacuum circuit breaker 6, vacuum circuit breaker is remained off, and buzzer 7 sounds the alarm, when low pressure is handed over The test current duration T that stream chopper electrical service life testing system is producedSMore than or equal to 0.8T and less than or equal to 1.2T When, vacuum circuit breaker 6 is kept closed, and buzzer 7 does not sound the alarm, above-mentioned three kinds of situation repetitive operations three times, every time The function that conduction time fault model is protected can be realized；
(4.4) fault model interval time defencive function debugging：
Wire is selected to be connected the input of current acquisition module 5 with the secondary side of three current measurement coils 10, electrically The test current interval time that service life experiment system is produced is tS, when the generation of Technologies for AC Low Voltage Circuit Breakers electrical service life testing system Test current interval time is tSDuring more than 1.2t, the automatic disjunction of vacuum circuit breaker 6, vacuum circuit breaker is remained off, honeybee Ring device 7 sounds the alarm, and is t when the test current interval time that Technologies for AC Low Voltage Circuit Breakers electrical service life testing system is producedSIt is little When 0.8t, the automatic disjunction of vacuum circuit breaker 6, vacuum circuit breaker is remained off, and buzzer 7 sounds the alarm, and works as low pressure The test current interval time that AC circuit breaker electrical service life testing system is produced is tSMore than or equal to 0.8t and it is less than or equal to During 1.2t, vacuum circuit breaker 6 is kept closed, and buzzer 7 does not sound the alarm, above-mentioned three kinds of situation repetitive operations three times, The function of fault model protection interval time can be realized every time；
(4.5) test number (TN) fault model defencive function debugging：
Wire is selected to be connected the input of current acquisition module 5 with the secondary side of three current measurement coils 10, electrically It is N that service life experiment system produces test current number of timesS, when Technologies for AC Low Voltage Circuit Breakers electrical service life testing system produces test current Number of times is NSDuring equal to N, the automatic disjunction of vacuum circuit breaker 6, vacuum circuit breaker is remained off, and buzzer 7 sounds the alarm, It is N when Technologies for AC Low Voltage Circuit Breakers electrical service life testing system produces test current number of timesSDuring more than N, vacuum circuit breaker 6 keeps disconnected Open state, buzzer 7 sounds the alarm, and is N when Technologies for AC Low Voltage Circuit Breakers electrical service life testing system produces test current number of timesS During less than N, vacuum circuit breaker 6 is kept closed, and buzzer 7 does not sound the alarm, above-mentioned three kinds of situation repetitive operations three times, The function that test number (TN) fault model is protected can be realized every time,
After the debugging of all fault model defencive functions is completed, then the electrical endurance test of Technologies for AC Low Voltage Circuit Breakers is supervised After surveying the normal startup of protection device, vacuum circuit breaker is in closure state；
5th step, to carrying out overall merit by the Technologies for AC Low Voltage Circuit Breakers of test monitoring electrical endurance, makes corresponding failure Judge：
(5.1) U is worked asS>1.1UPOr US<0.9UPWhen be judged as voltage failure model, wherein, work as US>1.1UPWhen, judge For voltage failure, watch-dog 1 sends instruction, and long-range disjunction vacuum circuit breaker 6, while buzzer 7 sounds the alarm, works as US< 0.9UPWhen, it is judged as voltage failure, watch-dog 1 sends instruction, long-range disjunction vacuum circuit breaker 6, while buzzer 7 sends police Report sound, works as 1.1UP≥US≥0.9UPWhen, it is judged as not breaking down, watch-dog 1 does not send instruction, and vacuum circuit breaker 6 keeps closing Conjunction state, buzzer 7 does not sound the alarm；
(5.2) I is worked asS>1.1IPOr IS<0.9IPWhen be judged as current failure model, wherein, work as IS>1.1IPWhen, judge For current failure, watch-dog 1 sends instruction, and long-range disjunction vacuum circuit breaker 6, while buzzer 7 sounds the alarm, works as IS< 0.9IPWhen, it is judged as current failure, watch-dog 1 sends instruction, long-range disjunction vacuum circuit breaker 6, while buzzer 7 sends police Report sound, works as 1.1IP≥IS≥0.9IPWhen, it is judged as not breaking down, watch-dog 1 does not send instruction, and vacuum circuit breaker 6 keeps closing Conjunction state, buzzer 7 does not sound the alarm, the evaluation of current failure model need conduction time in evaluated, at interval It is interior not evaluated；
(5.3) T is worked asS>1.2T or TS<It is judged as conduction time fault model during 0.8T, wherein, work as TS>During 1.2T, sentence Break as conduction time failure, watch-dog 1 sends instruction, long-range disjunction vacuum circuit breaker 6, while buzzer 7 sounds the alarm, when TS<During 0.8T, it is judged as conduction time failure, watch-dog 1 sends instruction, long-range disjunction vacuum circuit breaker 6, while buzzer 7 Sound the alarm, as 1.2T >=TSDuring >=0.8T, it is judged as not breaking down, watch-dog 1 does not send instruction, vacuum circuit breaker 6 It is kept closed, buzzer 7 does not sound the alarm；
(5.4) t is worked asS>1.2t or tS<It is judged as fault model interval time during 0.8t, wherein, work as tS>During 1.2t, judge For failure interval time, watch-dog 1 sends instruction, and long-range disjunction vacuum circuit breaker 6, while buzzer 7 sounds the alarm, works as tS <During 0.8t, judge to be failure interval time, watch-dog 1 sends instruction, long-range disjunction vacuum circuit breaker 6, while buzzer 7 Go out alarm song, as 1.2t >=tSDuring >=0.8t, it is judged as not breaking down, watch-dog 1 does not send instruction, vacuum circuit breaker 6 is protected Closure state is held, buzzer 7 does not sound the alarm；
(5.5) N is worked asS=N or NS>It is judged as test number (TN) fault model during N, wherein, work as NSDuring=N, it is judged as test Number of times failure, watch-dog 1 sends instruction, long-range disjunction vacuum circuit breaker 6, and vacuum circuit breaker is remained off, while buzzing Device 7 sounds the alarm, and works as NS>During N, it is judged as test number (TN) failure, watch-dog 1 sends instruction, long-range disjunction vacuum circuit breaker 6, vacuum circuit breaker 6 is remained off, while buzzer 7 sounds the alarm, works as NS<During N, it is judged as not breaking down, supervises Control device 1 does not send instruction, and vacuum circuit breaker 6 is kept closed, and buzzer 7 does not sound the alarm；
When a kind of any of the above described failure condition occurs, watch-dog 1 sends instruction, long-range disjunction vacuum circuit breaker 6, and protects Off-state is held, while buzzer 7 sounds the alarm, testing crew to be arrived in first have and investigates failure, pending fault is excluded, and is proceeded The electrical endurance test of Technologies for AC Low Voltage Circuit Breakers；Overall merit thinks the electrical endurance of Technologies for AC Low Voltage Circuit Breakers in the case of remaining Test is normally carried out, and vacuum circuit breaker 6 is kept closed, while buzzer 7 does not sound the alarm；
Above-mentioned US、IS、TS、tS、NSTest voltage peak value, test current peak value, test conduction time, test are mutually should be respectively Interval time, test number (TN), these parameters will in real time include in the operation interface of watch-dog 1 according to data acquisition；UP、IP、T、t、N Setting voltage peak value, setting electric current peak value are mutually should be respectively, set conduction time, are set interval time, setting test number (TN), by Testing crew carries out as needed the actual parameter setting of the Technologies for AC Low Voltage Circuit Breakers of electrical endurance test；Above-mentioned conduction time and Interval time, minimum reference unit was 0.01ms.
Embodiment 4
Apparatus of the present invention and Technologies for AC Low Voltage Circuit Breakers electrical service life testing system and Technologies for AC Low Voltage Circuit Breakers in the present embodiment The mode of connection as that shown in fig. 3：Electrical service life testing system is the wherein electrical endurance being made up of power supply and load impedance Power end A phases A of pilot system, power end B phases B of electrical service life testing system, the power end C phases of electrical service life testing system Power end N phases N of C and electrical service life testing system are tested respectively with vacuum circuit breaker 6, Technologies for AC Low Voltage Circuit Breakers 8, electrical endurance The load impedance 9 of system each phase sequence is sequentially connected in series, and the leading-out terminal of the load impedance 9 of electrical service life testing system is respectively mutually used Wire links together；There are three current measurement coils 10 in the present embodiment, the primary side of three current measurement coils 10 is empty Wire-core coil, the examination of power end A phases A of electrical service life testing system, power end B phases B of electrical service life testing system and electrical endurance Power end C phases C of check system are each passed through the primary side air core coil of each current measurement coil 10 of corresponding phase sequence；This enforcement There are three voltage acquisition modules 4 in example, three voltage acquisition modules 4 are sequentially connected respectively electrical service life testing system by wire Power end A phases A, power end B phases B of electrical service life testing system and electrical service life testing system power end C phases C.
The electrical endurance test monitoring protection device of the Technologies for AC Low Voltage Circuit Breakers in above-described embodiment, in addition to watch-dog, Involved miscellaneous part passes through commercially available, and the method for attachment between all parts is that those skilled in the art will appreciate that 's.

Claims (5)

1. the electrical endurance test monitoring protection device of Technologies for AC Low Voltage Circuit Breakers, it is characterised in that：Its composition includes watch-dog, work Control machine, PLC module, three voltage acquisition modules, current acquisition module, vacuum circuit breaker, buzzer and three current measurement lines Eight parts of circle；The connected mode of above-mentioned part is：Watch-dog be arranged on industrial computer on, industrial computer by data wire connect and PLC module connects, and PLC module is connected respectively further through data wire connection with three voltage acquisition modules and current acquisition module, Current acquisition module is connected respectively by wire with three current measurement coils, and PLC is passed through between industrial computer and vacuum circuit breaker Module connects, and buzzer is connected by wire with PLC module；Operation operational relation between above-mentioned all parts is：Watch-dog On industrial computer, watch-dog shows the real time data of industrial computer transmission, including test voltage oscillogram and peak value and test The oscillogram and peak value of electric current, the numerical value of conduction time, the numerical value of the numerical value of interval time and test number (TN), set in watch-dog Parameter includes peak value, the peak value of setting electric current, the numerical value of conduction time, the numerical value of interval time and the test number (TN) of setting voltage Numerical value, and overall merit is carried out by the real time data and setup parameter to above-mentioned five parameters, drawing in process of the test is The no logical judgment that abnormal conditions occur；Industrial computer is connected with PLC module by data wire, the numeral that PLC module is collected Signal is transferred in real time industrial computer；PLC module is adopted respectively further through data wire connection with three voltage acquisition modules and electric current Collection module connection, the voltage analog signal that three voltage acquisition modules are collected is converted to digital data transmission to PLC module, and three The current analog signal for sensing is passed to current acquisition module, the electric current that current acquisition module is collected by individual current measurement coil Analogue signal is converted to digital data transmission to PLC module；Connected by PLC module between industrial computer and vacuum circuit breaker, prison Control device is arranged on industrial computer, and watch-dog is communicated with PLC module, to realize remotely closing vacuum circuit breaker and being divided Disconnected operation；Buzzer is connected by wire with PLC module, when there are abnormal conditions in electrical endurance process of the test, buzzing Device sends chimes of doom.
2. the electrical endurance test monitoring protection device of Technologies for AC Low Voltage Circuit Breakers according to claim 1, it is characterised in that：Institute State and following monitoring programme flow process is provided with watch-dog：
The first step, is set for five key parameters of the Technologies for AC Low Voltage Circuit Breakers of electrical endurance test：
Before the electrical endurance on-test of Technologies for AC Low Voltage Circuit Breakers, testing crew is handed in watch-dog program according to the low pressure The requirement of the electrical endurance process of the test of stream chopper, sets five key parameters of the Technologies for AC Low Voltage Circuit Breakers of the test：Bag Include voltage peak UP, current peak IP, conduction time T, t interval time and test number (TN) N；
Second step, sets up five kinds of fault models of the electrical endurance test of Technologies for AC Low Voltage Circuit Breakers：
Testing crew sets up five kinds of fault models of the electrical endurance test of Technologies for AC Low Voltage Circuit Breakers in watch-dog program：Including Voltage failure model, current failure model, conduction time fault model, fault model interval time and test number (TN) failure mould Type；
3rd step, shows and is input into the real time data of five key parameters：
Three voltage acquisition modules collection test voltage data in the electrical endurance process of the test of Technologies for AC Low Voltage Circuit Breakers, three Current measurement coil and current acquisition module collection test current data, above-mentioned two groups of data utilize data wire by PLC module Connection real-time Transmission shows on a monitor the oscillogram of test voltage oscillogram and peak value and test current to industrial computer And the numerical value of peak value, the numerical value of conduction time, the numerical value of interval time and test number (TN)；The data transmitted by PLC module are entered Row data analysiss, the real time data of five key parameters is input into in watch-dog：Including test voltage peak value US, test current peak Value IS, actual conduction time TS, actual interval time tSWith test number (TN) NS；
4th step, judges whether the numerical value of real time data is abnormal：
By the real time data and the first step of five parameters to being input into in watch-dog in above-mentioned 3rd step in watch-dog program Five key parameters of the Technologies for AC Low Voltage Circuit Breakers of the electrical endurance test of middle setting carry out overall merit, relatively come through numeric ratio Judge whether the numerical value of real time data is abnormal；
5th step, fixes a breakdown：
When it is abnormal that above-mentioned 4th step judges the numerical value of real time data, that is, show the electrical endurance test of Technologies for AC Low Voltage Circuit Breakers In there occurs in above-mentioned second step five kinds of fault models in one or more failures, watch-dog sends action of fixing a breakdown and refers to Order, vacuum circuit breaker carries out disjunction, while buzzer sounds the alarm, testing crew goes testing ground inspection to fix a breakdown, and treats Failture evacuation, watch-dog restarting, repeats above-mentioned from the first step to the 4th step.
3. the electrical endurance test monitoring protection device of Technologies for AC Low Voltage Circuit Breakers according to claim 1, it is characterised in that：Institute State voltage acquisition module collection alternating voltage virtual value and be 1200V to the maximum, peak value is 2000V；The current measurement coil is adopted Luo-coil carries out current acquisition, and alternating current virtual value is 10kA to the maximum, and peak value is 20kA.
4. the application of the electrical endurance test monitoring protection device of Technologies for AC Low Voltage Circuit Breakers described in claim 1, it is characterised in that： The electrical endurance test of Technologies for AC Low Voltage Circuit Breakers is applied to, operating procedure is as follows：
The first step, start
The electrical endurance test monitoring protection device of Technologies for AC Low Voltage Circuit Breakers is switched on power first, device power-up starts, checked Whether each several part components and parts are normal, if exception, check reason and exclude exception, normal to starting up；
Second step, sets five key parameters, carries out real-time data acquisition：
Before the electrical endurance on-test of Technologies for AC Low Voltage Circuit Breakers, testing crew setting voltage peak value U in watch-dogP, set Determine current peak IP, setting conduction time T, setting interval time t and setting test number (TN) N, then in Technologies for AC Low Voltage Circuit Breakers Electrical endurance process of the test in three voltage acquisition modules gather test voltage data, three current measurement coils and electric current are adopted Collection module collection test current data, above-mentioned two groups of data connect real-time Transmission to industrial computer by PLC module using data wire, And oscillogram and peak value, the number of conduction time of test voltage oscillogram and peak value and test current are shown on a monitor The numerical value of value, the numerical value of interval time and test number (TN), last watch-dog carries out data point by the data that PLC module is transmitted Analysis, collects test voltage peak value US, test current peak IS, actual conduction time TS, actual interval time tSWith test time Number NSThe real-time parameter of this five data, completes real-time data acquisition；
3rd step, sets up the electrical endurance testing failure model of Technologies for AC Low Voltage Circuit Breakers：
After above-mentioned second step, testing crew sets up the electrical endurance test of Technologies for AC Low Voltage Circuit Breakers in the program of watch-dog Five kinds of fault models, including following voltage failure model, current failure model, conduction time fault model, interval time Fault model and test number (TN) fault model：
(3.1) voltage failure model, its corresponding failure sets for the test voltage peak value of Technologies for AC Low Voltage Circuit Breakers more than 1.1 times Voltage peak, can cause the insulation of AC circuit breaker breakdown, or less than 0.9 times of setting voltage peak value, experiment power supply is discontented with Sufficient test requirements document,
(3.2) current failure model, its corresponding failure sets for the test current peak value of Technologies for AC Low Voltage Circuit Breakers less than 0.9 times Current peak is unsatisfactory for test current requirement, or more than 1.1 times of setting electric current peak values three-phase contact abrasion can be caused seriously to make Obtaining a wherein phase contact can not close, or other short-circuit conditions occur,
(3.3) conduction time fault model, its corresponding failure is more than 1.2 times for the actual conduction time of Technologies for AC Low Voltage Circuit Breakers The conduction time of setting, the contact melting welding of Technologies for AC Low Voltage Circuit Breakers, the handle operation mechanism of Technologies for AC Low Voltage Circuit Breakers can be caused to damage It is bad to cause contact to be unable to disjunction,
(3.4) fault model interval time, its corresponding failure is more than 1.2 times for the actual interval time of Technologies for AC Low Voltage Circuit Breakers The interval time of setting, electrical endurance test operation device can be caused to break down so that Technologies for AC Low Voltage Circuit Breakers is without just normally closed Close or electrical service life testing system break down so that the interval for occurring between test current twice is long,
(3.5) test number (TN) fault model, its corresponding failure is more than setting for the accumulation test number (TN) of Technologies for AC Low Voltage Circuit Breakers Test number (TN), when Technologies for AC Low Voltage Circuit Breakers electrical endurance test accumulation test number (TN) exceedes setting test number (TN), and the electrically longevity Life test backup actuating device continues to carry out closed and disconnected operation to Technologies for AC Low Voltage Circuit Breakers, can cause electrical endurance test system System appearance can be required more than test number (TN), more than the failure of test requirements document；
4th step, function debugging：
After above-mentioned 3rd step, testing crew is according to a fault model corresponding in above-mentioned five kinds of fault models in monitoring Function debugging is carried out on device 1, now the function debugging of remaining fault model temporarily fails,
(4.1) voltage failure model protection function debugging：
Select wire to be connected the input of three voltage acquisition modules with the end input of vacuum circuit breaker, work as vacuum circuit breaker Output voltage peak value USMore than 1.1UPWhen, the automatic disjunction of vacuum circuit breaker, vacuum circuit breaker is remained off, and buzzer sends Alarm song；As vacuum circuit breaker input terminal voltage peak value USLess than 0.9UPWhen, the automatic disjunction of vacuum circuit breaker, vacuum circuit breaker is protected Off-state is held, buzzer sounds the alarm；As vacuum circuit breaker input terminal voltage peak value USMore than or equal to 0.9UPAnd it is less than Equal to 1.1UPWhen, vacuum circuit breaker is kept closed, and buzzer does not sound the alarm, above-mentioned three kinds of situation repetitive operations three It is secondary, the function of voltage failure model protection can be realized every time；
(4.2) current failure model protection function debugging：
Wire is selected to be connected the input of current acquisition module with the secondary side of three current measurement coils, when low-voltage alternating-current breaks The test current peak I that road device electrical service life testing system is producedSMore than 1.1IPWhen, the automatic disjunction of vacuum circuit breaker, vacuum is broken Road device is remained off, and buzzer sounds the alarm, when the test that Technologies for AC Low Voltage Circuit Breakers electrical service life testing system is produced Current peak ISLess than 0.9IPWhen, the automatic disjunction of vacuum circuit breaker, vacuum circuit breaker is remained off, and buzzer sends alarm Sound, when the test current peak I that Technologies for AC Low Voltage Circuit Breakers electrical service life testing system is producedSMore than or equal to 0.9IPAnd less than etc. In 1.1IPWhen, vacuum circuit breaker is kept closed, and buzzer does not sound the alarm, above-mentioned three kinds of situation repetitive operations three times, The function of current failure model protection can be realized every time；
(4.3) conduction time fault model defencive function debugging：
Wire is selected to be connected the input of current acquisition module with the secondary side of three current measurement coils, electrical endurance test The test current persistent period that system is produced is TS, when the test current that Technologies for AC Low Voltage Circuit Breakers electrical service life testing system is produced Duration TSDuring more than 1.2T, the automatic disjunction of vacuum circuit breaker, vacuum circuit breaker is remained off, and buzzer sends alarm Sound, when the test current duration T that Technologies for AC Low Voltage Circuit Breakers electrical service life testing system is producedSDuring less than 0.8T, vacuum is broken The automatic disjunction of road device, vacuum circuit breaker is remained off, and buzzer sounds the alarm, when Technologies for AC Low Voltage Circuit Breakers electrical endurance The test current duration T that pilot system is producedSDuring more than or equal to 0.8T and less than or equal to 1.2T, vacuum circuit breaker keeps Closure state, buzzer does not sound the alarm, above-mentioned three kinds of situation repetitive operations three times, and conduction time failure can be realized every time The function of model protection；
(4.4) fault model interval time defencive function debugging：
Wire is selected to be connected the input of current acquisition module with the secondary side of three current measurement coils, electrical endurance test The test current interval time that system is produced is tS, when the test current that Technologies for AC Low Voltage Circuit Breakers electrical service life testing system is produced Interval time is tSDuring more than 1.2t, the automatic disjunction of vacuum circuit breaker, vacuum circuit breaker is remained off, and buzzer sends police Report sound, is t when the test current interval time that Technologies for AC Low Voltage Circuit Breakers electrical service life testing system is producedSDuring less than 0.8t, very The automatic disjunction of empty chopper, vacuum circuit breaker is remained off, and buzzer sounds the alarm, when Technologies for AC Low Voltage Circuit Breakers it is electric The test current interval time that service life experiment system is produced is tSDuring more than or equal to 0.8t and less than or equal to 1.2t, vacuum circuit breaker Device is kept closed, and buzzer does not sound the alarm, above-mentioned three kinds of situation repetitive operations three times, when can realize interval every time Between fault model protection function；
(4.5) test number (TN) fault model defencive function debugging：
Wire is selected to be connected the input of current acquisition module with the secondary side of three current measurement coils, electrical endurance test It is N that system produces test current number of timesS, it is N when Technologies for AC Low Voltage Circuit Breakers electrical service life testing system produces test current number of timesS During equal to N, the automatic disjunction of vacuum circuit breaker, vacuum circuit breaker is remained off, and buzzer sounds the alarm, and works as low-voltage alternating-current It is N that chopper electrical service life testing system produces test current number of timesSDuring more than N, vacuum circuit breaker is remained off, buzzing Device sounds the alarm, and is N when Technologies for AC Low Voltage Circuit Breakers electrical service life testing system produces test current number of timesSDuring less than N, vacuum Chopper is kept closed, and buzzer does not sound the alarm, above-mentioned three kinds of situation repetitive operations three times, and examination can be realized every time The function of number of times fault model protection is tested,
After the debugging of all fault model defencive functions is completed, then the electrical endurance test monitoring of Technologies for AC Low Voltage Circuit Breakers is protected After protection unit normally starts, vacuum circuit breaker is in closure state；
5th step, to carrying out overall merit by the Technologies for AC Low Voltage Circuit Breakers of test monitoring electrical endurance, makes corresponding failure judgement：
(5.1) U is worked asS>1.1UPOr US<0.9UPWhen be judged as voltage failure model, wherein, work as US>1.1UPWhen, it is judged as electricity Pressure failure, watch-dog sends instruction, and long-range disjunction vacuum circuit breaker, while buzzer sounds the alarm, works as US<0.9UPWhen, sentence Break as voltage failure, watch-dog sends instruction, and long-range disjunction vacuum circuit breaker, while buzzer sounds the alarm, works as 1.1UP≥ US≥0.9UPWhen, it is judged as not breaking down, watch-dog does not send instruction, and vacuum circuit breaker is kept closed, and buzzer is not Sound the alarm；
(5.2) I is worked asS>1.1IPOr IS<0.9IPWhen be judged as current failure model, wherein, work as IS>1.1IPWhen, it is judged as electricity Stream failure, watch-dog sends instruction, and long-range disjunction vacuum circuit breaker, while buzzer sounds the alarm, works as IS<0.9IPWhen, sentence Break as current failure, watch-dog sends instruction, and long-range disjunction vacuum circuit breaker, while buzzer sounds the alarm, works as 1.1IP≥ IS≥0.9IPWhen, it is judged as not breaking down, watch-dog does not send instruction, and vacuum circuit breaker is kept closed, and buzzer is not Sound the alarm, the evaluation of current failure model need conduction time in evaluated, do not evaluated within interval time；
(5.3) T is worked asS>1.2T or TS<It is judged as conduction time fault model during 0.8T, wherein, work as TS>During 1.2T, it is judged as Conduction time failure, watch-dog sends instruction, and long-range disjunction vacuum circuit breaker, while buzzer sounds the alarm, works as TS<0.8T When, it is judged as conduction time failure, watch-dog sends instruction, long-range disjunction vacuum circuit breaker, while buzzer sounds the alarm, As 1.2T >=TSDuring >=0.8T, it is judged as not breaking down, watch-dog does not send instruction, vacuum circuit breaker is kept closed, Buzzer does not sound the alarm；
(5.4) t is worked asS>1.2t or tS<It is judged as fault model interval time during 0.8t, wherein, work as tS>During 1.2t, between being judged as Every time failure, watch-dog sends instruction, and long-range disjunction vacuum circuit breaker, while buzzer sounds the alarm, works as tS<0.8t When, judging to be failure interval time, watch-dog sends instruction, long-range disjunction vacuum circuit breaker, while buzzer sounds the alarm, As 1.2t >=tSDuring >=0.8t, it is judged as not breaking down, watch-dog does not send instruction, vacuum circuit breaker is kept closed, Buzzer does not sound the alarm；
(5.5) N is worked asS=N or NS>It is judged as test number (TN) fault model during N, wherein, work as NSDuring=N, it is judged as test number (TN) Failure, watch-dog sends instruction, long-range disjunction vacuum circuit breaker, and vacuum circuit breaker is remained off, while buzzer sends Alarm song, works as NS>During N, it is judged as test number (TN) failure, watch-dog sends instruction, long-range disjunction vacuum circuit breaker, vacuum circuit breaker Device is remained off, while buzzer sounds the alarm, works as NS<During N, it is judged as not breaking down, watch-dog does not send finger Order, vacuum circuit breaker is kept closed, and buzzer does not sound the alarm；
When a kind of any of the above described failure condition occurs, watch-dog sends instruction, long-range disjunction vacuum circuit breaker, and remains open State, while buzzer sounds the alarm, testing crew to be arrived in first have and investigates failure, and pending fault is excluded, and proceeds low pressure friendship The electrical endurance test of stream chopper；Overall merit thinks that the electrical endurance of Technologies for AC Low Voltage Circuit Breakers is tested just in the case of remaining Often carry out, vacuum circuit breaker is kept closed, while buzzer does not sound the alarm；
Above-mentioned US、IS、TS、tS、NSTest voltage peak value, test current peak value, test conduction time, intertrial interval are mutually should be respectively Time, test number (TN), these parameters will in real time include at monitor operations interface according to data acquisition；UP、IP, T, t, N difference phase Setting voltage peak value, setting electric current peak value are should be, conduction time is set, interval time, setting test number (TN) is set, by test people Member carries out as needed the actual parameter setting of the Technologies for AC Low Voltage Circuit Breakers of electrical endurance test.
5. the electrical endurance test monitoring protection device of Technologies for AC Low Voltage Circuit Breakers described in claim 1 according to claim 4 Application, it is characterised in that：The conduction time and minimum reference unit interval time are 0.01ms.
CN201710163266.1A 2017-03-19 2017-03-19 Electrical life test monitoring protection device of low-voltage alternating current breaker and application thereof Active CN106680708B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710163266.1A CN106680708B (en) 2017-03-19 2017-03-19 Electrical life test monitoring protection device of low-voltage alternating current breaker and application thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710163266.1A CN106680708B (en) 2017-03-19 2017-03-19 Electrical life test monitoring protection device of low-voltage alternating current breaker and application thereof

Publications (2)

Publication Number Publication Date
CN106680708A true CN106680708A (en) 2017-05-17
CN106680708B CN106680708B (en) 2023-06-20

Family

ID=58829093

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710163266.1A Active CN106680708B (en) 2017-03-19 2017-03-19 Electrical life test monitoring protection device of low-voltage alternating current breaker and application thereof

Country Status (1)

Country Link
CN (1) CN106680708B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107870274A (en) * 2017-10-16 2018-04-03 黄和菊 A kind of low-pressure electronic equipment product experiment detection device and method for testing and detecting
CN109270387A (en) * 2018-12-03 2019-01-25 河北工业大学 Low-voltage electrical apparatus electrical endurance test device based on alternating current solid-state fictitious load
CN112731133A (en) * 2020-12-25 2021-04-30 格力电器（武汉）有限公司 Method and device for detecting electrical service life of alternating current contactor
CN113341312A (en) * 2021-06-08 2021-09-03 国网河北省电力有限公司保定供电分公司 Test circuit, test device and fault test method of alternating current circuit breaker

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995028025A1 (en) * 1994-04-11 1995-10-19 Abb Power T & D Company Inc. Intelligent circuit breaker providing synchronous switching and condition monitoring
CN102353895A (en) * 2011-06-08 2012-02-15 河北工业大学 Low voltage breaker life automatic test apparatus
CN104297682A (en) * 2014-11-10 2015-01-21 河北工业大学 Protection device for electrical life test of circuit breaker and operating mode of protection device
CN106383275A (en) * 2016-08-18 2017-02-08 四川泛华航空仪表电器有限公司 Engine ignition capacitor aging test fault detection device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995028025A1 (en) * 1994-04-11 1995-10-19 Abb Power T & D Company Inc. Intelligent circuit breaker providing synchronous switching and condition monitoring
CN102353895A (en) * 2011-06-08 2012-02-15 河北工业大学 Low voltage breaker life automatic test apparatus
CN104297682A (en) * 2014-11-10 2015-01-21 河北工业大学 Protection device for electrical life test of circuit breaker and operating mode of protection device
CN106383275A (en) * 2016-08-18 2017-02-08 四川泛华航空仪表电器有限公司 Engine ignition capacitor aging test fault detection device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
江壮贤;庄劲武;刘路辉;武瑾;王晨;吴红江;: "基于强迫换流原理的新型真空直流限流断路器", 海军工程大学学报, no. 03 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107870274A (en) * 2017-10-16 2018-04-03 黄和菊 A kind of low-pressure electronic equipment product experiment detection device and method for testing and detecting
CN109270387A (en) * 2018-12-03 2019-01-25 河北工业大学 Low-voltage electrical apparatus electrical endurance test device based on alternating current solid-state fictitious load
CN109270387B (en) * 2018-12-03 2023-08-18 河北工业大学 Electric life test device of piezoelectric device based on alternating current solid-state simulation load
CN112731133A (en) * 2020-12-25 2021-04-30 格力电器（武汉）有限公司 Method and device for detecting electrical service life of alternating current contactor
CN113341312A (en) * 2021-06-08 2021-09-03 国网河北省电力有限公司保定供电分公司 Test circuit, test device and fault test method of alternating current circuit breaker

Also Published As

Publication number Publication date
CN106680708B (en) 2023-06-20

Similar Documents

Publication Publication Date Title
CN106680708A (en) Electrical life test monitoring protector for low-voltage alternating-current circuit breaker and application thereof
CN110941918A (en) Intelligent substation fault analysis system
CN103792505B (en) A kind of electric power DC system earth fault analog
CN103513139A (en) Power transformer fault intelligent diagnosis technology, method and device
CN104090230A (en) Breaker safe operation real-time analysis early warning system
CN102270879A (en) Equipment audio monitoring system of unattended substation
CN201966531U (en) HGIS (hybrid gas insulated switchgear) combined electrical apparatus on-line monitoring device and integration HGIS intelligent combined electrical apparatus
CN104330730B (en) The connection of catalyst and disjunction test monitoring protection device and the method for operation thereof
CN106405405A (en) Distribution breaker mechanical characteristic online monitoring assessment method and system
CN102646545A (en) Medium-voltage circuit breaker for online monitoring of mechanical characteristics
CN103234576A (en) State monitoring system for power devices in intelligent substations
CN111157841A (en) Fault quick positioning device for secondary circuit of electric operation type isolating switch
CN104297682B (en) The electric life test protection device of breaker and its method for operation
CN105699889B (en) Circuit breaker of intelligent transformer substation electrical endurance loses and the evaluation method of arc extinguishing ability
KR101697022B1 (en) Diagnostic analysis device and control method of the intelligent performance high-voltage circuit breaker
CN205911832U (en) Circuit breaker intelligent components
CN201796290U (en) Common fault emergency treatment device for electric locomotive
CN206710559U (en) The electrical endurance test monitoring protection device of Technologies for AC Low Voltage Circuit Breakers
CN209894890U (en) Grounding current on-line monitoring device for grounding iron core of transformer based on PLC
CN109708687A (en) Monitoring system of pole-mounted switch
CN107870274A (en) A kind of low-pressure electronic equipment product experiment detection device and method for testing and detecting
CN116930693A (en) Integrated intelligent monitoring switch equipment and monitoring method
CN113659725B (en) Monitoring system applied to high-voltage switch cabinet and handcart circuit breaker thereof
CN213619449U (en) 27.5kV intelligent grounding device of alternating-current traction power supply system
CN212844140U (en) Vacuum degree online intelligent early warning system based on electric field intensity measurement

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant