CN207440181U - A kind of dynamic resistance of high-voltage circuit breaker measuring system - Google Patents
A kind of dynamic resistance of high-voltage circuit breaker measuring system Download PDFInfo
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- CN207440181U CN207440181U CN201721604409.XU CN201721604409U CN207440181U CN 207440181 U CN207440181 U CN 207440181U CN 201721604409 U CN201721604409 U CN 201721604409U CN 207440181 U CN207440181 U CN 207440181U
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Abstract
The utility model is related to a kind of dynamic resistance of high-voltage circuit breaker measuring systems, including dynamic resistance of high-voltage circuit breaker measuring loop and high-voltage circuitbreaker comprehensive tester, the dynamic resistance of high-voltage circuit breaker measuring loop includes charging module, ultracapacitor, thyristor, current divider, measuring resistance and breaker, the ultracapacitor, thyristor, current divider and breaker are in turn connected to form series loop, the charging module is in parallel with the ultracapacitor, and the measuring resistance is in parallel with the thyristor and current divider.The utility model is reached more than kilo-ampere grade using the heavy impulse current measurement breaker dynamic electric resistor based on ultracapacitor, loop current, and measurement accuracy is very high；The pre-inserted angle of incidence of switching-on resistance, loop resistance and switching-on resistance of high-voltage circuitbreaker is combined together, three above parameter measurements only can be obtained by one-shot measurement operation.
Description
Technical field
The utility model is related to high-voltage circuitbreaker detection technique field, in particular to a kind of high-voltage circuitbreaker dynamic
Resistance measuring system.
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.
There is a kind of powerful energy-storage travelling wave tube-ultracapacitor at present, this energy-storage travelling wave tube is transported extensively
It uses in each industry and sphere of life, is led in aerospace, crane, electric vehicle, ups power, the renewable sources of energy and military affairs
All there have been many applications in domain.Super capacitor capacity is big, service life is long, charging rate is fast.Using super capacitor as survey
Amount power supply can realize the purpose of checking of great current loop resistance.
Utility model content
In order to solve the above technical problems, the utility model provides a kind of dynamic resistance of high-voltage circuit breaker measuring system, it can essence
Really switching-on resistance, loop resistance and the pre-inserted angle of incidence of switching-on resistance of measurement high-voltage circuitbreaker advantageously reduces the hair of failure
Raw probability.
The technical solution adopted in the utility model is：A kind of dynamic resistance of high-voltage circuit breaker measuring system is provided, including height
Voltage breaker dynamic electric resistor measuring loop and for detecting breaker closing in the dynamic resistance of high-voltage circuit breaker measuring loop
The pre-inserted angle of incidence of resistance, switching-on resistance and the high-voltage circuitbreaker comprehensive tester of loop resistance, 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.
In dynamic resistance of high-voltage circuit breaker measuring system described in the utility model, the high-voltage circuitbreaker integration test
Instrument includes dynamic electric resistor measurement module, data collection and control module and data processing and display module.
In dynamic resistance of high-voltage circuit breaker measuring system described in the utility model, the dynamic electric resistor measurement module bag
Include switching-on resistance voltage signal sensor, ohm level measuring resistance voltage signal sensor, loop resistance voltage signal sensor
With current divider voltage signal sensor, the data collection and control module includes passing with the switching-on resistance voltage signal respectively
Sensor, ohm level measuring resistance voltage signal sensor, loop resistance voltage signal sensor and current divider voltage signal sensing
The high-speed data acquisition card that device is electrical connected and the relay output board being electrical connected with the high-speed data acquisition card, the number
According to processing and display module include the industrial personal computer that is electrical connected with the high-speed data acquisition card and with the electrical phase of the industrial personal computer
Display even.
In dynamic resistance of high-voltage circuit breaker measuring system described in the utility model, the thyristor and the relay
Output board is electrical connected.
In dynamic resistance of high-voltage circuit breaker measuring system described in the utility model, the charging module includes charger
And charge controller.
In dynamic resistance of high-voltage circuit breaker measuring system described in the utility model, the charge controller and the work
Control machine is electrical connected.
In dynamic resistance of high-voltage circuit breaker measuring system described in the utility model, the model BN- of the charger
CDJ33V25A。
In dynamic resistance of high-voltage circuit breaker measuring system described in the utility model, the model of the ultracapacitor
SCPM321546。
The measurement power supply of dynamic resistance of high-voltage circuit breaker measuring system provided by the utility model is used based on super capacitor
The heavy impulse current measurement breaker dynamic electric resistor of device, loop current reach more than kilo-ampere grade, and measurement accuracy is very high；Loop resistance
Detection with switching-on resistance is using voltage-ratio method, and current divider is as the measuring resistance of measuring loop resistance and loop resistance string
Connection, ohm level measuring resistance are connected as the measuring resistance of measurement switching-on resistance with switching-on resistance, can be by high-voltage circuitbreaker
Switching-on resistance, loop resistance and the pre-inserted angle of incidence of switching-on resistance combine together, only by one-shot measurement operation can obtain with
Upper three parameter measurements；Data acquisition and processing (DAP) is carried out using high-speed data acquisition card and industrial personal computer, charge and discharge are carried out
Control realizes the high speed processing at scene.
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；
Fig. 2 is the measuring principle schematic diagram of voltage-ratio method in the utility model embodiment；
Fig. 3 is the breaker schematic diagram that switching-on resistance has been installed in the utility model embodiment；
Fig. 4 is switching-on resistance value and the measuring principle schematic diagram of the pre-inserted angle of incidence in the utility model embodiment；
Fig. 5 is the structure diagram of series RC model in the utility model embodiment；
Fig. 6 is the schematic diagram of improved parallel RC circuits model in the utility model embodiment；
Fig. 7 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.
As shown in Figure 1, the dynamic resistance of high-voltage circuit breaker measuring system that the utility model embodiment provides, breaks including height
Road device dynamic electric resistor measuring loop and for detect breaker switching-on resistance in dynamic resistance of high-voltage circuit breaker measuring loop, close a floodgate
The pre-inserted angle of incidence of resistance and the high-voltage circuitbreaker comprehensive tester of loop resistance, wherein, dynamic resistance of high-voltage circuit breaker measures back
Road include charging module, ultracapacitor 1, thyristor 2, current divider 3, measuring resistance 4 and breaker 5, ultracapacitor 1,
Thyristor 2, current divider 3 and breaker 5 are in turn connected to form series loop, and charging module is in parallel with ultracapacitor 1, standard electric
Resistance 4 is in parallel with thyristor 2 and current divider 3.As shown in fig. 7, high-voltage circuitbreaker comprehensive tester include 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 voltage signal pass
Sensor 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, loop resistance voltage signal sensor 113 and current divider electricity
Press the high-speed data acquisition card 121 being electrical connected of signal transducer 114 and the relay being electrical connected with high-speed data acquisition card 121
Device output board 122, data processing and display module include the industrial personal computer 131 that is electrical connected with high-speed data acquisition card 121 and with
The display 132 that industrial personal computer 131 is electrical connected.Wherein, charging module includes charger 61 and charge controller 62, charge control
Device 62 is relay, and the input terminal of charge controller 62 is connected with the output terminal of industrial personal computer 131, it is controlled by industrial personal computer 131
Break-make road.Due to high-speed data acquisition card 121 export the too small break-make that can not directly control thyristor 2 of signal code, it is necessary to
With the relay output board 122 that can be directly controlled come indirect control, thyristor 2 and relay output board 122 in the present embodiment
It is electrical connected, and the break-make of thyristor 2 is directly controlled by relay output board 122.
Specifically, in general, breaker loop resistor detection has dash current detection and two kinds of sides of direct current detection
Case.It is measured according to traditional DC power supply, if DC current is excessive, very big heat will be generated in instrument
Can, it is just very high to the heat-sinking capability requirement of instrument element.It due to copper stranded conductor small electrical impedance, is not easy to get rusty, matter is soft, breaker test
Instrument, as the lead between connecting line and instrument and breaker, circuit electricity is carried out using kilo-ampere grade DC current generally using copper stranded conductor
Resistance detection will greatly increase the weight of lead, when carrying out breaker loop resistor detection, it is desirable that staff, which climbs up breaker, breaks
Wiring is carried out at mouthful, excessive overweight lead is clearly inappropriate, and very big inconvenience is also brought for work such as the carryings of instrument.
If being measured with DC low current, due to loop resistance value very little, cause measured value very little, the proportion of such outside electromagnetic interference is just
It is very big, measurement accuracy is seriously affected, and low current can not eliminate the oxide-film of contact.
And breaker loop resistor detection is carried out according to dash current, since conduction time is very short, even if current peak
It is very big, but since the time is shorter, caloric value is smaller, and the size requirement of element will be substantially reduced.Therefore, using the big electricity of impact
The measuring loop electric current that stream carrys out measuring loop resistance is highly effective measure.
Voltage-ratio method is the effective measures of measuring loop resistance, is illustrated in figure 2 measuring principle schematic diagram.In measurement open circuit
During device loop resistance, acquisition circuit resistive voltage URWith the voltage Ur in measuring resistance.Due toWherein r is
The measuring resistance known, UR, UrIt is sampled to obtain, loop resistanceThe result shows that the value of loop resistance and current value without
It closes, so even if the size of electric current is deviated, also result is not impacted.
In measuring loop resistance, using four-terminal method wiring, current feed is connected on the outside of testing resistance, and voltage lead connects
On the inside of testing resistance.Such mode of connection can effectively reduce the influence of conductor resistance, because contact resistance is general
Between tens of to hundreds of micro-ohms, if test when contact it is bad, only the proportion of the contact resistance of wiring just than circuit electricity
Resistance is big in itself.
The specifically used method of four terminal connections technologies is in signal acquisition：
A four-terminal device-current divider has been used in the power unit of tester.Current divider there are four terminals,
Two of which terminals on the outside, two in inside, two of outside are current terminal, and two of inside are voltage link
End.Current divider can be accessed by current terminal in major loop, realize the purpose of circuit electric discharge.Voltage signal line is connected on
On voltage terminal, you can acquisition current divider voltage signal.The wiring of breaker uses the same method.Collect current divider and
After the voltage signal of breaker, it is possible to draw breaker loop resistor value using voltage-ratio method.
Switching-on resistance and the pre-inserted angle of incidence need to be detected by having installed the high-voltage circuitbreaker of switching-on resistance.Switching-on resistance is to limit
Switching overvoltage processed and a kind of resistance on-board the circuit breaker is installed；According to GB1984-2003《High-voltage AC breaker》In determine
Justice, the pre-inserted angle of incidence are the auxiliary switch closing moments of switching-on resistance during the breaker switching-on operation containing switching-on resistance
Time difference between main contact time of contact.Switching-on resistance is and at main contact both ends, therefore switching-on resistance and loop resistance
It is parallel relationship.The breaker schematic diagram of switching-on resistance has been installed as shown in figure 3, under normal circumstances, breaker main contact with it is auxiliary
Help contact action coordinate must meet it is claimed below：When breaker does feed motion, the auxiliary contact K with switching-on resistance R1
Than main contact K2Action when a period of time (time is about between 8~12ms) connection in advance, i.e. breaker closing is suitable
Sequence is that first auxiliary contact is closed, and then main contact is closed.
The switching-on resistance resistance value of high-voltage circuitbreaker is generally hundreds of ohm, and most direct measuring method is exactly to act on power supply
Afterwards, the voltage and current at its both ends is measured, resistance value then can be obtained according to Ohm's law indirectly.For the ease of surveying
Loop current amount is preferably converted into voltage, and then carries out switching-on resistance detection using voltage-ratio method by amount.Due to the conjunction of breaker
The pre-inserted angle of incidence of lock resistance is shorter, and when measurement needs the data collecting card using high speed.
When measuring breaker closing resistance and the pre-inserted angle of incidence of switching-on resistance, by breaker and an ohm level standard electric
Series connection is hindered in both ends of power, it is poor by measuring measuring resistance and breaker both end voltage transformation period during feed motion
To switching-on resistance value and the pre-inserted angle of incidence.
Measuring principle is as shown in figure 4, wherein U1For supply voltage, R2For ohm level measuring resistance, value and switching-on resistance value phase
When, it is hundreds of ohm, R1For breaker closing resistance, K1The auxiliary switch of switching-on resistance input in order to control, K2For breaker, master opens
It closes.Before breaker switching-on operation, auxiliary switch K1With main switch K2It is off, the power supply of measuring device acts on open circuit
On device, then breaker both end voltage is supply voltage U1, measuring resistance R2Upper voltage is zero；Work as t=t1When, breaker just carries out
Closing operation, auxiliary contact K1It connects, main switch K2It disconnects, in switching-on resistance access major loop, due to measuring resistance and the electricity that closes a floodgate
Resistance value is an order of magnitude, and breaker terminal voltage is distributed with measuring resistance voltage by resistance value, and the sum of the two voltage is power supply electricity
Pressure, breaker both end voltage is from supply voltage U1Drop to U2, voltage is increased to (U from 0 in measuring resistance1-U2)；Work as t=t2When,
Main contact K2It connects, since loop resistance is micro-ohm grade, can be neglected compared with switching-on resistance and ohm level measuring resistance, therefore
The voltage on fracture falls to zero at this time, and voltage is supply voltage U in measuring resistance1.From above procedure as can be seen that passing through survey
Measuring resistance voltage and breaker terminal voltage can obtain switching-on resistance value and the pre-inserted angle of incidence during amount breaker closing.Tool
Body calculation formula is as follows：
tThe pre-inserted angle of incidence=t2-t1
DC power supply generally is used for the switching-on resistance measurement of breaker, and favourable opposition is then required for loop resistance measurement
Current source is hit, measurement could be convenient for by making to generate larger pressure drop on loop resistance.In order to simplify measuring loop, reach disposable inspection
Survey the purpose of loop resistance and switching-on resistance, the measurement power supply both in the utility model selects ultracapacitor, device electricity
After source is fully charged, auxiliary switch is closed, and switching-on resistance and measuring resistance access circuit, super-capacitor voltage act on combined floodgate electricity
Resistance and its measuring resistance, since switching-on resistance and its measuring resistance are larger, and the pre-inserted angle of incidence of switching-on resistance is very short, is detecting
Ultracapacitor charge does not lose substantially during switching-on resistance；After the main contact of breaker closes, loop resistance standard
Resistance access circuit, ultracapacitor discharge to circuit, form the dash current that amplitude is kilo-ampere grade, can meet measurement breaker
The requirement of loop resistance.The utility model designs the method by emulating and testing, development using ultracapacitor as core
Measuring device.
According to the analysis of front, it can not only realize that high-precision was detected using heavy impulse current source, but also can effectively reduce
Instrument size.Therefore the utility model is used as measurement power supply using ultracapacitor.
Ultracapacitor has following features compared with normal power supplies：(1) capacitance is very big, maximum up to 1000F；(2)
Charging rate is fast, and about 50s, that is, chargeable is finished；(3) it is reusable often, up to millions of time.
The double properties of super capacitor and battery and capacitance just meet in the utility model measuring system for power supply
Requirement.Moreover, the characteristics of super capacitor charge/discharge rates are fast, and discharge current is big, and service life is long, for breaker dynamic electric
It is a selection well to hinder for the detection power supply of detecting system.
The equivalent-circuit model of ultracapacitor there are two application at present is relatively extensive main, series RC model and changes
Into parallel RC circuits model.
Series model is simplest equivalent model, and model schematic is as shown in figure 5, wherein R1It is equivalent series resistance, C
For capacitance.Wherein C characterizes the capacity of capacitor, is the core parameter of super capacitor.R1It is a critically important parameter,
In discharge process, the caloric value of ultracapacitor is determined by him, and it can limit the maximum current value in discharge process.It is this
Model is a kind of simplified model, is not particularly suited in complicated circuit.However this model also has its advantage.First, this
Model calculates simply, very clear；Secondly, the essentially all production company of two parameters in this model can all give out,
Modeling is convenient.So this is current most widely used model.
Fig. 6 is improved ultracapacitor model.Improved parallel RC circuits model is the base in series RC circuit model
On plinth, a parallel equivalent resistance R is added2To characterize the leakage current effects of ultracapacitor, R2It is to influence ultracapacitor
The parameter of long-term energy storage.R2It is usually very big, tens of thousands of ohms, only leakage current very little, several 10~100 μ A can be reached.In this reality
With in the test circuit in new, loop resistance and current divider resistance even no more than 1 Ω, therefore R2It can be ignored,
It is considered as open circuit, so the utility model selects the first model.The utility model select ultracapacitor model be
SCPM321546, capacitance C=54F, maximum charging voltage 32V；The charger model BN-CDJ33V25A of selection, this is filled
Electric appliance maximum charging voltage is 33V, maximum charging current 25A.
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, switching-on resistance is thrown
Enter, 5 both end voltage U of breaker2Certain value is dropped to by capacitance voltage, gathers 4 both end voltage U of measuring resistance at this time1, then can root
Switching-on resistance value is calculated as R according to standard electric resistance valueMeasuring resistance*(U2/U1).When 5 major loop of breaker is closed, U2It is down to close
0, at this moment high-speed data acquisition card 121 send signal control thyristor 2 turn on, current divider 3 access circuit in, due to current divider 3
Resistance is micro-ohm grade, and measuring resistance 4 is ohm level, 4 short circuit of measuring resistance after current divider 3 is connected, and electric current is upper from current divider 3
It crosses.Due to loop resistance very little, the high current for having peak value up to upper kilo-ampere is flowed through into breaker major loop, measures breaker terminal voltage
U2With voltage U on current divider3, loop resistance value can be obtained as R according to the resistance of current divider 3Current divider*(U2/U3).With U1>0 moment
For time zero, U2≈ 0 is timing end point, and the time difference between the two is exactly the pre-inserted angle of incidence of switching-on resistance.
The measurement power supply of the utility model measures breaker dynamic electric resistor using the heavy impulse current based on ultracapacitor,
Loop current reaches more than kilo-ampere grade, and measurement accuracy is very high；The detection of loop resistance and switching-on resistance using voltage-ratio method, divides
Stream device is connected as the measuring resistance of measuring loop resistance with loop resistance, and ohm level measuring resistance is used as measurement switching-on resistance
Measuring resistance connect with switching-on resistance, can be by the switching-on resistance of high-voltage circuitbreaker, loop resistance and switching-on resistance pre-inserted
Time combines together, only can obtain three above parameter measurements by one-shot measurement operation；Using high-speed data acquisition
Card and industrial personal computer carry out data acquisition and processing (DAP), charge and discharge are controlled, and realize the high speed processing at scene.
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 (8)
1. a kind of dynamic resistance of high-voltage circuit breaker measuring system, which is characterized in that measured back including dynamic resistance of high-voltage circuit breaker
Road and for detecting breaker switching-on resistance in the dynamic resistance of high-voltage circuit breaker measuring loop, the pre-inserted angle of incidence of switching-on resistance
With the high-voltage circuitbreaker comprehensive tester of loop resistance, the dynamic resistance of high-voltage circuit breaker measuring loop include charging module,
Ultracapacitor, thyristor, current divider, measuring resistance and breaker, the ultracapacitor, thyristor, current divider and disconnected
Road device is in turn connected to form series loop, and the charging module is in parallel with the ultracapacitor, the measuring resistance with it is described
Thyristor and current divider are in parallel.
2. dynamic resistance of high-voltage circuit breaker measuring system according to claim 1, which is characterized in that the high-voltage circuitbreaker
Comprehensive tester includes dynamic electric resistor measurement module, data collection and control module and data processing and display module.
3. dynamic resistance of high-voltage circuit breaker measuring system according to claim 2, which is characterized in that the dynamic electric resistor is surveyed
Measuring module includes switching-on resistance voltage signal sensor, ohm level measuring resistance voltage signal sensor, loop resistance voltage letter
Number sensor and current divider voltage signal sensor, the data collection and control module include respectively with switching-on resistance electricity
Press signal transducer, ohm level measuring resistance voltage signal sensor, loop resistance voltage signal sensor and current divider voltage
The high-speed data acquisition card and the relay output being electrical connected with the high-speed data acquisition card that signal transducer is electrical connected
Plate, the data processing and display module include the industrial personal computer that is electrical connected with the high-speed data acquisition card and with the industry control
The display that machine is electrical connected.
4. dynamic resistance of high-voltage circuit breaker measuring system according to claim 3, which is characterized in that the thyristor and institute
Relay output board is stated to be electrical connected.
5. dynamic resistance of high-voltage circuit breaker measuring system according to claim 3, which is characterized in that the charging module bag
Include charger and charge controller.
6. dynamic resistance of high-voltage circuit breaker measuring system according to claim 5, which is characterized in that the charge controller
It is electrical connected with the industrial personal computer.
7. dynamic resistance of high-voltage circuit breaker measuring system according to claim 5, which is characterized in that the type of the charger
Number be BN-CDJ33V25A.
8. dynamic resistance of high-voltage circuit breaker measuring system according to claim 1, which is characterized in that the ultracapacitor
Model SCPM321546.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721604409.XU CN207440181U (en) | 2017-11-27 | 2017-11-27 | A kind of dynamic resistance of high-voltage circuit breaker measuring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721604409.XU CN207440181U (en) | 2017-11-27 | 2017-11-27 | A kind of dynamic resistance of high-voltage circuit breaker measuring system |
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| CN207440181U true CN207440181U (en) | 2018-06-01 |
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ID=62287830
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109061461A (en) * | 2018-09-10 | 2018-12-21 | 广西电网有限责任公司电力科学研究院 | A kind of High Voltage Circuit Breaker Contacts dynamic resistance measuring device |
| CN111308332A (en) * | 2019-11-07 | 2020-06-19 | 广东电网有限责任公司 | Voltage type relay protection tripping circuit contact resistance detection device |
| WO2020135197A1 (en) * | 2018-12-24 | 2020-07-02 | 东南大学 | Circuit for testing dynamic resistance of gallium nitride device |
-
2017
- 2017-11-27 CN CN201721604409.XU patent/CN207440181U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109061461A (en) * | 2018-09-10 | 2018-12-21 | 广西电网有限责任公司电力科学研究院 | A kind of High Voltage Circuit Breaker Contacts dynamic resistance measuring device |
| WO2020135197A1 (en) * | 2018-12-24 | 2020-07-02 | 东南大学 | Circuit for testing dynamic resistance of gallium nitride device |
| CN111308332A (en) * | 2019-11-07 | 2020-06-19 | 广东电网有限责任公司 | Voltage type relay protection tripping circuit contact resistance detection device |
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