CN207440180U - A kind of high-voltage circuitbreaker comprehensive tester - Google Patents
A kind of high-voltage circuitbreaker comprehensive tester Download PDFInfo
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- CN207440180U CN207440180U CN201721603964.0U CN201721603964U CN207440180U CN 207440180 U CN207440180 U CN 207440180U CN 201721603964 U CN201721603964 U CN 201721603964U CN 207440180 U CN207440180 U CN 207440180U
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Abstract
The utility model is related to a kind of high-voltage circuitbreaker comprehensive testers, including dynamic electric resistor measurement module, data collection and control module and data processing and display module, the dynamic electric resistor measurement module includes switching-on resistance voltage signal sensor, ohm level measuring resistance voltage signal sensor, loop resistance voltage signal sensor and current divider voltage signal sensor, the data collection and control module includes high-speed data acquisition card and the relay output board being electrical connected with the high-speed data acquisition card, the data processing and display module include the industrial personal computer being electrical connected with the high-speed data acquisition card and the display being electrical connected with the industrial personal computer.The utility model can completely realize detection high-voltage circuitbreaker loop resistance, switching-on resistance and the pre-inserted angle of incidence of switching-on resistance, can improve precision and the accuracy of test data, have the characteristics that test speed is fast, efficient.
Description
Technical field
The utility model is related to high-voltage circuitbreaker detection technique fields, are integrated in particular to a kind of high-voltage circuitbreaker
Tester.
Background technology
Important primary element in high-voltage electric power system further includes various switchgears in addition to transformer, generator, high
Voltage breaker is most important switch element in high-voltage electric power system, it can not only control cut-offfing for running current, also
Can nonserviceable lower cut-out short circuit current flow, and fault element from system is cut off, prevents the expansion of failure.If high pressure is breaking
Device breaks down, and the safe operation of system will face great risk.Therefore, the performance of high-voltage circuitbreaker is to high-voltage electric power system
Safe operation have extremely important meaning.
According to DL/T596-1996《Electric system preventive trial regulation》, high-voltage circuitbreaker need periodic measurement every with
The relevant characterisitic parameter of its operating status.The important electric parameter of high-voltage circuitbreaker has：Reflect breaker dynamic/static contact contact shape
The loop resistance value of condition, in the switching-on resistance value of the restricted switching overvoltage effect of high-voltage fence and its pre-inserted time etc..
Loop resistance is one very important performance indicator of high-voltage circuitbreaker.With the increase of breaker break-make number,
Dynamic/static contact, can depositing due to oxide-film on contact and due to being contacted with air it is possible that the phenomenon that contact defective tightness
These can all have an impact loop resistance value.According to Joule's law, caloric value is directly proportional to resistance value, therefore, contact hair
Heat can increase, and temperature rise may cause loop resistance to continue to increase, and ultimately result in accident.Related regulation regulation, electricity
Force system periodically need to detect high-voltage circuitbreaker loop resistance using direct current pressure drop method, and electric current is no less than 100A, and 1.5 times go out factory rules and regulations
Definite value is to judge the limit value of performance quality.Current circuit resistance tester generally use constant-current switch power source, volume is greatly and just
The property taken is poor, is unfavorable for measuring the development of work.Since high-voltage circuitbreaker loop resistance is usually below hundreds of micro-ohms, pass through 100A
Only tens millivolts of the voltage drop that electric current generates, is unfavorable for measuring in the case of strong electromagnetic at the scene.And from domestic and international
From the point of view of loop resistance testing research, the loop resistance value that electric current measures more greatly can more reflect the contact condition of contact, therefore should adopt
With checking of great current loop resistance.
When nonloaded line carries out planned combined floodgate or automatic reclosing operation, it can all generate in the line and operate electricity
Pressure, endangers the safety of system, it is exactly to install switching-on resistance additional to limit the most effective measure of this kind of switching overvoltage.Install switching-on resistance additional
Afterwards, when carrying out closing operation, auxiliary switch is closed first, connects switching-on resistance, is crossed 8~12ms and is connected main contact again, so
The concussion energy of making process will be absorbed by switching-on resistance, so as to achieve the purpose that Suppressing Switching Overvoltage.When through-flow number mistake
After mostly, the impact of electric current may cause switching-on resistance to deform, and resistance value changes.Underproof switching-on resistance is very big in electric system
Hidden danger.Therefore periodic measurement switching-on resistance is needed, ensures its value in safe range.
Country's measurement breaker loop resistor, switching-on resistance and the instrument of the pre-inserted angle of incidence of switching-on resistance are dazzling, but
The problems such as generally existing measurement function is single, measurement accuracy is not high, instrumentation process is complicated, instruments weight is excessive, and it is external
The problem of instrument price of import is again very expensive.These problems will substantially reduce the efficiency of network operation personnel.
Utility model content
In order to solve the above technical problems, the utility model provides a kind of high-voltage circuitbreaker comprehensive tester, can accurately measure
Switching-on resistance, loop resistance and the pre-inserted angle of incidence of switching-on resistance of high-voltage circuitbreaker advantageously reduce the probability of happening of failure.
The technical solution adopted in the utility model is：A kind of high-voltage circuitbreaker comprehensive tester is provided, for detecting high pressure
Loop resistance, switching-on resistance and the pre-inserted angle of incidence of switching-on resistance in breaker dynamic electric resistor measuring loop, the high pressure open circuit
Device comprehensive tester includes dynamic electric resistor measurement module, data collection and control module and data processing and display module, institute
Stating dynamic electric resistor measurement module includes switching-on resistance voltage signal sensor, ohm level measuring resistance voltage signal sensor, returns
Road resistive voltage signal transducer and current divider voltage signal sensor, the data collection and control module include respectively with institute
State switching-on resistance voltage signal sensor, ohm level measuring resistance voltage signal sensor, loop resistance voltage signal sensor
It the high-speed data acquisition card that is electrical connected with current divider voltage signal sensor and is electrical connected with the high-speed data acquisition card
Relay output board, the data processing and display module include the industrial personal computer being electrical connected with the high-speed data acquisition card
With the display being electrical connected with the industrial personal computer.
In high-voltage circuitbreaker comprehensive tester described in the utility model, the model of the high-speed data acquisition card
PCI-1716L is connected by terminal plate with the dynamic electric resistor measurement module.
In high-voltage circuitbreaker comprehensive tester described in the utility model, the switching-on resistance voltage signal sensor,
Ohm level measuring resistance voltage signal sensor, loop resistance voltage signal sensor and current divider voltage signal sensor are
Hall voltage sensor.
In high-voltage circuitbreaker comprehensive tester described in the utility model, the Hall voltage sensor is
WBV121S07 magnetic compensation formula Hall voltage sensors.
In high-voltage circuitbreaker comprehensive tester described in the utility model, the relay output board is No. 16 relays
Output board PCLD-785.
In high-voltage circuitbreaker comprehensive tester described in the utility model, the dynamic resistance of high-voltage circuit breaker measures back
Road includes charging module, ultracapacitor, thyristor, current divider, measuring resistance and breaker, the ultracapacitor, crystalline substance
Brake tube, current divider and breaker are in turn connected to form series loop, and the charging module is in parallel with the ultracapacitor, described
Measuring resistance is in parallel with the thyristor and current divider.
In high-voltage circuitbreaker comprehensive tester described in the utility model, the charging module and the industrial personal computer are electrical
It is connected.
In high-voltage circuitbreaker comprehensive tester described in the utility model, the thyristor and the relay output board
It is electrical connected.
In high-voltage circuitbreaker comprehensive tester described in the utility model, the model MTC500 of the thyristor.
In high-voltage circuitbreaker comprehensive tester described in the utility model, using copper stranded conductor as lead material, use
Charged mounted /dismounted wire clip is lead wire clip.
High-voltage circuitbreaker comprehensive tester provided by the utility model, can be completely real by rationally designing and matching component
Now detect high-voltage circuitbreaker loop resistance, switching-on resistance and the pre-inserted angle of incidence of switching-on resistance, can improve test data precision and
Accuracy using high-performance data capture card and industrial control computer as core element, is realized at the acquisition of multichannel data
Function is managed, has the characteristics that test speed is fast, efficient；Using industrial touch display as the medium of human-computer interaction, performance is complete
It is kind, it is easy to operate；Using copper stranded conductor as lead material, charged mounted /dismounted wire clip is used to substantially increase test for lead wire clip
The thermal stability of instrument.
Description of the drawings
Below in conjunction with accompanying drawings and embodiments, the utility model is described in further detail, in attached drawing：
Fig. 1 is the structure diagram of the utility model embodiment mesohigh breaker dynamic electric resistor measuring loop；
Fig. 2 is the structure diagram of the utility model embodiment mesohigh System for Circuit Breaker tester.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, is further elaborated the utility model.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.
The high-voltage circuitbreaker comprehensive tester that the utility model embodiment provides needs to detect dynamic resistance of high-voltage circuit breaker
Loop resistance, switching-on resistance and the pre-inserted angle of incidence of switching-on resistance in measuring loop, the tester use industrial personal computer and high-performance
Data collecting card gathers electric quantity signal as hardware system core element by sensor, by capture card by these signal acquisitions to
In industrial personal computer, to obtain the data of our needs.As shown in Figure 1, the high-voltage circuitbreaker dynamic electric in the utility model embodiment
Hindering measuring loop includes charging module, ultracapacitor 1, thyristor 2, current divider 3, measuring resistance 4 and breaker 5, super
Capacitor 1, thyristor 2, current divider 3 and breaker 5 are in turn connected to form series loop, and charging module and ultracapacitor 1 are simultaneously
Connection, measuring resistance 4 are in parallel with thyristor 2 and current divider 3.As shown in Fig. 2, high-voltage circuitbreaker comprehensive tester includes dynamic electric resistor
Measurement module, data collection and control module and data processing and display module, wherein, dynamic resistance of high-voltage circuit breaker measurement
Module includes switching-on resistance voltage signal sensor 111, ohm level measuring resistance voltage signal sensor 112, loop resistance electricity
Press signal transducer 113 and current divider voltage signal sensor 114, data collection and control module include respectively with switching-on resistance
Voltage signal sensor 111, ohm level measuring resistance voltage signal sensor 112,113 and of loop resistance voltage signal sensor
High-speed data acquisition card 121 that current divider voltage signal sensor 114 is electrical connected and with 121 electrical phase of high-speed data acquisition card
Relay output board 122 even, data processing and display module include the industrial personal computer being electrical connected with high-speed data acquisition card 121
131 and the display 132 that is electrical connected with industrial personal computer 131.Wherein, charging module includes charger 61 and charge controller 62,
Charge controller 62 is relay, and the input terminal of charge controller 62 is connected with the output terminal of industrial personal computer 131, by industrial personal computer
131 control its break-make road.Thyristor 2 can not be directly controlled since the output signal code of high-speed data acquisition card 121 is too small
Break-make is, it is necessary to the relay output board 122 that can be directly controlled come indirect control, thyristor 2 and relay in the present embodiment
Output board 122 is electrical connected, and the break-make of thyristor 2 is directly controlled by relay output board 122.
Specifically, dynamic electric resistor measurement module includes switching-on resistance voltage signal sensor 111, ohm level measuring resistance electricity
Press signal transducer 112, loop resistance voltage signal sensor 113 and current divider voltage signal sensor 114, the electricity that closes a floodgate
Hinder voltage signal sensor 111, ohm level measuring resistance voltage signal sensor 112, loop resistance voltage signal sensor 113
The breaker 5 being respectively used to current divider voltage signal sensor 114 in measurement dynamic resistance of high-voltage circuit breaker measuring loop closes
Lock resistive voltage signal, 3 voltage signal of 4 voltage signal of measuring resistance, loop resistance voltage signal and current divider.
Switching-on resistance voltage signal sensor 111, ohm level measuring resistance voltage signal in the utility model embodiment
Sensor 112, loop resistance voltage signal sensor 113 and current divider voltage signal sensor 114 are Hall voltage sensing
Device.Hall voltage sensor has the following advantages that：
A) dynamic property is good.Direct measuring type Hall sensor dynamic response time t<3 μ s, magnetic compensation formula Hall sensor dynamic
Response time t<1μs.
B) high certainty of measurement.Common transformer precision is generally 4% or so, and Hall sensor precision can accomplish<1%.
C) linearity is good.The Hall sensor linearity<0.1%.
D) measuring range is big, and working band is wide.Can be in the frequency ranges of operation of 0~100kHz, and can measure as straight
The voltage signal of the various types waveforms such as stream, exchange.
E) temperature drift is small.Direct measuring type Hall sensor temperature drift<± 0.04%/DEG C, and magnetic compensation formula hall sensing
Device temperature drift<± 0.01%/DEG C.
F) overload capacity is strong, and reliability is high, and the mean time between failures is more than 50,000 hours.
G) size is small, light-weight, is easily installed.
Hall voltage sensor includes direct measuring type Hall voltage sensor and magnetic compensation formula Hall voltage sensor, both
Using hall principle.Magnetic balance type Hall voltage sensor has compared with direct measuring type from Hall element peak response, non-
The advantages of linearity, and magnetic balance type Hall voltage sensor overload capacity is very strong, up to 20 times, therefore the voltage in the present embodiment
Sensor further uses magnetic balance type Hall voltage sensor.
Voltage sensor uses magnetic compensation formula Hall voltage sensor, principle and magnetic compensation formula Hall current sensor class
Seemingly and it is operated on field compensation basis.When the tested voltage U in major loop acts on the multiturn being wound on iron core
Coil (number of turn N1), it generates induced field and acts on Hall element, it is made to export Hall voltage.The voltage signal is through amplification
After device amplification, power amplifier, power amplifier output output compensation electric current I are input to2.The compensation function of current is wound on iron core
On multicircuit winding (number of turn N2) caused by magnetic direction caused by magnetic field and main circuit voltage U on the contrary, thus will mend
Original magnetic field is repaid, the output of Hall element is gradually decreased, finally works as I2With number of turn N2Product caused by magnetic field and lead back
When magnetic field caused by the voltage U of road is equal, I2It is not further added by, Hall element has reached Zero flux state at this time.As tested voltage U
During variation, balance is destroyed, and Hall element just has signal output, compensation electric current I2Change therewith, start to repeat above-mentioned benefit
It repays and equilibrium process, Hall element is finally made to reach new balance again, in Zero flux state.From macroscopically, magnetic compensation
The output voltage energy real-time tracking of formula Hall voltage sensor is tested voltage U.
Preferably, the switching-on resistance voltage signal sensor in the utility model, ohm level measuring resistance voltage signal pass
Sensor, loop resistance voltage signal sensor and current divider voltage signal sensor use WBV121S07 magnetic compensation formula Halls
Voltage sensor, parameter are as follows：Measurement range is free, output voltage output rated value 5V, corresponding primary side rated voltage,
Precision ± 1.0%, the linearity 0.1%, 40 μ s of reaction time, 0~70 DEG C of operating temperature.
Data collection and control module include respectively with switching-on resistance voltage signal sensor 111, ohm level measuring resistance
Voltage signal sensor 112, loop resistance voltage signal sensor 113 and current divider voltage signal sensor 114 are electrical connected
High-speed data acquisition card 121 and the relay output board 122 that is electrical connected with high-speed data acquisition card 121.Due to high speed number
It is weaker according to the digital output signal of capture card 121, the break-make of thyristor 2 can not be directly controlled, it is necessary to be exported using relay
Plate 122 carries out indirect control to thyristor 2, and in addition relay output board 122 can also control sensor to put into.Data acquisition portion
The core divided is A/D converting systems and CPU, and the performance parameter of capture card is included：Acquisition rate, resolution ratio, input dynamic
Scope, incoming end and corresponding triggering mode, STD bus specification etc..The utility model need gather 14 road analog datas with
And 2 railway digital amount passages of control, required number of channels is more, therefore high-speed data acquisition card 121 is ground using Yan Hua companies
The PCI-1716L multifunctional data acquisition cards of system carry out the task of data acquisition.PCI-1716L is the more work(of a high-resolution
It can pci data capture card., with there are one 250KS/s16 A/D converters, 1K is used for the sample FIFO buffer of A/D for it.PCI-
1716/1716L can realize 16 road single-ended analog amount inputs or 8 road differential mode analog quantity inputs, can also combine input.Carry 2
16 digit counter passages of a 16 D/A output channels, 16 railway digital amount input/output passages and 1 10MHz.Voltage signal
PCI-1716L is transferred to by terminal plate to be followed by carrying out data calculating in industrial personal computer.For relay output board 122, this reality
No. 16 relay output board PCLD-785 to be formed a complete production network with new selection and PCI-1716L.Band on the relay output board 122
There are 16 relays, can break-make be directly controlled by high-speed data acquisition card 121.
And the selection of the thyristor 2 in dynamic resistance of high-voltage circuit breaker measuring loop mainly considers conveyance capacity, this practicality
It is new that peak point current is required to reach 1000A, it is contemplated that the electric current in discharge circuit is shock wave, and current attenuation is very fast, therefore optional
Select MTC500 thyristors, rated current 500A.
Since electric discharge main circuit current peak value reaches 1000A, high current can generate fuel factor, if lead temperature capacity is not
It is enough, the insulation meeting accelerated ageing of conducting wire, the final safety for influencing tester.
A) lead type selects
Conducting wire widely used at present is generally aluminum products and copper product.Than wide, it is hindered for the application of aluminum conductor in the past
It is anti-small, it will not get rusty, convenient for placing for a long time, and good economy performance.But aluminum conductor is easily lost, bad mechanical property, is filled for detection
It puts for this device often to be moved and does not apply to, and temperature capacity is poor, high pressure is fragile or even melts.And copper conductor
Similary resistance is small, will not get rusty, mechanical performance greatly enhances after being fabricated to copper stranded conductor, easy to remove, and long lifespan.This implementation
Lead material in example selects copper stranded conductor.
B) lead wire clip selects
Following principle is followed for the selection of lead wire clip：(a) contact surface of lead wire clip is big, to meet high current
The requirement of detection, otherwise in the detection it is possible that lead wire clip generates electric spark due to overheat even burns the consequence melted, danger
And the safety of instrument and the person.(b) lead wire clip size should be mating with high-voltage switch gear size to be measured, to measure the complete of work
Into.For this purpose, the charged mounted /dismounted wire clip of lead wire clip selection contact area greatly in the present embodiment.
The specific detection process of the utility model is as follows：The connection of charge controller 62 will be controlled to make by industrial personal computer 131 super
Capacitor 1 charges to given voltage, and industrial personal computer 131 controls charge controller 62 to disconnect, and into test mode, accesses breaker 5,
Switching-on resistance is put into, and ultracapacitor 1 discharges, 5 both end voltage U of breaker2Certain value is dropped to by capacitance voltage, at this time acquisition mark
Quasi- 4 both end voltage U of resistance1, then switching-on resistance value can be calculated according to standard electric resistance value as RMeasuring resistance*(U2/U1).Work as open circuit
When 5 major loop of device is closed, U2It is down to close to 0, at this moment high-speed data acquisition card 121 sends signal control thyristor 2 and turns on, and shunts
Device 3 access circuit in, due to 3 resistance of current divider be micro-ohm grade, and measuring resistance 4 be ohm level, current divider 3 connect after standard electric
4 short circuit of resistance, electric current are flowed through from current divider 3.Due to loop resistance very little, the high current for having peak value up to upper kilo-ampere is flowed through into open circuit
Device major loop measures breaker terminal voltage U2With voltage U on current divider3, loop resistance can be obtained according to the resistance of current divider 3
It is worth for RCurrent divider*(U2/U3).With U1>0 moment be time zero, U2≈ 0 is timing end point, and the time difference between the two is exactly to close a floodgate
The pre-inserted angle of incidence of resistance.
High-voltage circuitbreaker comprehensive tester provided by the utility model, can be completely real by rationally designing and matching component
Now detect high-voltage circuitbreaker loop resistance, switching-on resistance and the pre-inserted angle of incidence of switching-on resistance, can improve test data precision and
Accuracy using high-performance data capture card and industrial control computer as core element, is realized at the acquisition of multichannel data
Function is managed, has the characteristics that test speed is fast, efficient；Using industrial touch display as the medium of human-computer interaction, performance is complete
It is kind, it is easy to operate；Using copper stranded conductor as lead material, charged mounted /dismounted wire clip is used to substantially increase test for lead wire clip
The thermal stability of instrument.
The embodiment of the utility model is described above in association with attached drawing, but the utility model is not limited to
The specific embodiment stated, above-mentioned specific embodiment is only schematical rather than restricted, this field it is common
Technical staff is not departing from the utility model aims and scope of the claimed protection situation under the enlightenment of the utility model
Under, many forms can be also made, these are belonged within the protection of the utility model.
Claims (10)
1. a kind of high-voltage circuitbreaker comprehensive tester, for detecting the electricity of the circuit in dynamic resistance of high-voltage circuit breaker measuring loop
Resistance, switching-on resistance and the pre-inserted angle of incidence of switching-on resistance, which is characterized in that the high-voltage circuitbreaker comprehensive tester includes dynamic electric
Resistance measurement module, data collection and control module and data processing and display module, the dynamic electric resistor measurement module include
Switching-on resistance voltage signal sensor, ohm level measuring resistance voltage signal sensor, loop resistance voltage signal sensor and
Current divider voltage signal sensor, the data collection and control module include sensing with the switching-on resistance voltage signal respectively
Device, ohm level measuring resistance voltage signal sensor, loop resistance voltage signal sensor and current divider voltage signal sensor
The high-speed data acquisition card being electrical connected and the relay output board being electrical connected with the high-speed data acquisition card, the data
Processing and display module include the industrial personal computer being electrical connected with the high-speed data acquisition card and are electrical connected with the industrial personal computer
Display.
2. high-voltage circuitbreaker comprehensive tester according to claim 1, which is characterized in that the high-speed data acquisition card
Model PCI-1716L is connected by terminal plate with the dynamic electric resistor measurement module.
3. high-voltage circuitbreaker comprehensive tester according to claim 1, which is characterized in that the switching-on resistance voltage signal
Sensor, ohm level measuring resistance voltage signal sensor, loop resistance voltage signal sensor and current divider voltage signal pass
Sensor is Hall voltage sensor.
4. high-voltage circuitbreaker comprehensive tester according to claim 3, which is characterized in that the Hall voltage sensor is
WBV121S07 magnetic compensation formula Hall voltage sensors.
5. high-voltage circuitbreaker comprehensive tester according to claim 1, which is characterized in that the relay output board is 16
Road relay output board PCLD-785.
6. high-voltage circuitbreaker comprehensive tester according to claim 1, which is characterized in that the high-voltage circuitbreaker dynamic electric
Hindering measuring loop includes charging module, ultracapacitor, thyristor, current divider, measuring resistance and breaker, the super electricity
Container, thyristor, current divider and breaker are in turn connected to form series loop, and the charging module and the ultracapacitor are simultaneously
Connection, the measuring resistance are in parallel with the thyristor and current divider.
7. high-voltage circuitbreaker comprehensive tester according to claim 6, which is characterized in that the charging module and the work
Control machine is electrical connected.
8. high-voltage circuitbreaker comprehensive tester according to claim 6, which is characterized in that the thyristor and the relay
Device output board is electrical connected.
9. high-voltage circuitbreaker comprehensive tester according to claim 8, which is characterized in that the model of the thyristor
MTC500。
10. high-voltage circuitbreaker comprehensive tester according to claim 1, which is characterized in that using copper stranded conductor as lead
Material uses charged mounted /dismounted wire clip as lead wire clip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721603964.0U CN207440180U (en) | 2017-11-27 | 2017-11-27 | A kind of high-voltage circuitbreaker comprehensive tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721603964.0U CN207440180U (en) | 2017-11-27 | 2017-11-27 | A kind of high-voltage circuitbreaker comprehensive tester |
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| CN207440180U true CN207440180U (en) | 2018-06-01 |
Family
ID=62287774
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| CN201721603964.0U Active CN207440180U (en) | 2017-11-27 | 2017-11-27 | A kind of high-voltage circuitbreaker comprehensive tester |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110780256A (en) * | 2019-11-19 | 2020-02-11 | 国网湖北省电力有限公司电力科学研究院 | System and method for detecting accuracy of circuit breaker on primary and secondary fusion complete set of columns |
| CN111044889A (en) * | 2019-11-19 | 2020-04-21 | 平高集团有限公司 | Method for measuring reset time of damping type closing resistor of high-voltage circuit breaker |
| CN111751622A (en) * | 2020-05-14 | 2020-10-09 | 广西电网有限责任公司电力科学研究院 | Method and system for measuring circuit breaker loop resistance |
-
2017
- 2017-11-27 CN CN201721603964.0U patent/CN207440180U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110780256A (en) * | 2019-11-19 | 2020-02-11 | 国网湖北省电力有限公司电力科学研究院 | System and method for detecting accuracy of circuit breaker on primary and secondary fusion complete set of columns |
| CN111044889A (en) * | 2019-11-19 | 2020-04-21 | 平高集团有限公司 | Method for measuring reset time of damping type closing resistor of high-voltage circuit breaker |
| CN111044889B (en) * | 2019-11-19 | 2021-12-17 | 平高集团有限公司 | Method for measuring reset time of damping type closing resistor of high-voltage circuit breaker |
| CN111751622A (en) * | 2020-05-14 | 2020-10-09 | 广西电网有限责任公司电力科学研究院 | Method and system for measuring circuit breaker loop resistance |
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