CN207366648U - A kind of control measuring circuit of power frequency continued flow experimental rig - Google Patents
A kind of control measuring circuit of power frequency continued flow experimental rig Download PDFInfo
- Publication number
- CN207366648U CN207366648U CN201720881333.9U CN201720881333U CN207366648U CN 207366648 U CN207366648 U CN 207366648U CN 201720881333 U CN201720881333 U CN 201720881333U CN 207366648 U CN207366648 U CN 207366648U
- Authority
- CN
- China
- Prior art keywords
- circuit
- signal
- measuring
- control
- controller
- 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.)
- Active
Links
- 230000003750 conditioning effect Effects 0.000 claims abstract description 31
- 238000005259 measurement Methods 0.000 claims abstract description 17
- 238000006243 chemical reaction Methods 0.000 claims abstract description 13
- 238000012360 testing method Methods 0.000 claims description 29
- 238000002955 isolation Methods 0.000 claims description 24
- 230000008878 coupling Effects 0.000 claims description 16
- 238000010168 coupling process Methods 0.000 claims description 16
- 238000005859 coupling reaction Methods 0.000 claims description 16
- 230000005611 electricity Effects 0.000 claims description 9
- 238000002474 experimental method Methods 0.000 claims description 5
- 238000004080 punching Methods 0.000 claims description 2
- 230000001960 triggered effect Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 9
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000001360 synchronised effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 239000011787 zinc oxide Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000011324 bead Substances 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 229960001296 zinc oxide Drugs 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003760 hair shine Effects 0.000 description 1
- 230000036039 immunity Effects 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000005622 photoelectricity Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Landscapes
- Measurement Of Resistance Or Impedance (AREA)
Abstract
The utility model provides a kind of control measuring circuit of power frequency continued flow experimental rig, belongs to power equipment control fields of measurement.The control measuring circuit includes：Primary side measuring circuit, signal conditioning circuit, control circuit and controller；Primary side measuring circuit is used to gather measuring signal from a lateral circuit, and measuring signal is transmitted to signal conditioning circuit；Signal conditioning circuit is used to carry out signal condition and digital-to-analogue conversion to measuring signal, and transformed measuring signal is transmitted to controller；Controller is used for according to transformed measuring signal, and to control circuit output control signal, the impulse voltage generator triggered by control circuit in a lateral circuit produces impulse overvoltage；Wherein, control circuit, signal conditioning circuit and controller are mutually isolated between each road voltage respectively by power voltage supply all the way.The utility model can effectively prevent control measuring circuit of the impulse overvoltage that the impulse voltage generator in a lateral circuit produces to power frequency continued flow experimental rig from causing damage.
Description
Technical field
Power equipment control fields of measurement is the utility model is related to, more particularly, to a kind of power frequency continued flow experimental rig
Control measuring circuit.
Background technology
Electric lightning is widely used in power supply and railway power system, for lightning current to be imported into the earth, from
And suppress influence of the lightning wave overvoltage to power consumer.Currently used electric lightning is Zinc-Oxide Arrester.Due to electricity
The quality of power arrester quality directly influences the quality of electric system lightning protection properties, so as to Zinc-Oxide Arrester in lightning wave
Electric current recovery characteristics under effect carry out pilot study, that is, carry out the power frequency continued flow experiment of arrester, have highly important
Engineering practical value.
Carrying out the power frequency continued flow experiment of arrester needs to realize power frequency and combined impulse pressurization, relative to single power frequency with
And for impulse voltage generator, power frequency continued flow experimental rig requires impulse overvoltage to be folded in any point of power frequency ac voltage
Add, the requirement higher for control accuracy.At the same time, since surge voltage amplitude is high, steepness is big, and impulse overvoltage is superimposed upon
Power frequency electric potential source may be caused to damage on power frequency supply.Therefore, the reliability and stability of power frequency continued flow experimental rig will
Seek also higher.
In the related art, there is provided a kind of control measuring circuit of power frequency continued flow experimental rig, its power frequency supply is to adopt
Power-frequency voltage is produced with RLC oscillation circuits.Such power frequency continued flow experimental rig often can not necessarily produce in test humorous
Shake, and frequency of oscillation is not necessarily 50Hz power frequencies, causes the randomness that such power frequency continued flow is tested very big.In addition, according to IEC
(International Electro technical Commission, International Electrotechnical Commission) standard, it is existing most of
Power frequency continued flow experimental rig produces power-frequency voltage using power grid joint test transformer, and impulse voltage generator, which produces, impacted electricity
Pressure, is isolated between power frequency supply and impact power supply using impact ball gap.Such power frequency continued flow experimental rig is being tested
When, since impulse overvoltage is superimposed with AC power between control circuit, measuring circuit and power supply, it is more likely that power frequency is continued
The control measuring apparatus of stream experimental rig causes larger damage.
Utility model content
The utility model provides a kind of power frequency continued flow examination for overcoming the above problem or solving the above problems at least in part
The control measuring circuit of experiment device.
The control measuring circuit of the power frequency continued flow experimental rig includes：One-shot measurement circuit, signal conditioning circuit, control electricity
Road and controller；
Primary side measuring circuit is used to gather measuring signal from a lateral circuit, and measuring signal is transmitted to signal condition electricity
Road；Signal conditioning circuit is used to carry out signal condition and digital-to-analogue conversion to measuring signal, and transformed measuring signal is transmitted to
Controller；Controller is used for according to transformed measuring signal, and to control circuit output control signal, one is triggered by control circuit
Impulse voltage generator in secondary lateral circuit, produces impulse overvoltage；Wherein, control circuit, signal conditioning circuit and controller
It is mutually isolated between each road voltage respectively by power voltage supply all the way.
Wherein, device further includes the first photoelectric isolation module；Primary side measuring circuit is used to measuring signal being transmitted to the
One photoelectric isolation module, the first photoelectric isolation module is used to carry out Phototube Coupling to measuring signal, by the measurement after Phototube Coupling
Signal transmission is to signal conditioning circuit.
Wherein, device further includes the second photoelectric isolation module；Control circuit is used for according to transformed measuring signal, to the
Two photoelectric isolation module output control signals；Second photoelectric isolation module is used to carry out Phototube Coupling to control signal, to control
Control signal after circuit output Phototube Coupling.
Wherein, measuring signal includes power-frequency voltage signal, test product both end voltage signal, flows through test product current signal；Once
Side measuring circuit includes RC divider, capacitive divider, Rogowski coil, and RC divider is used to measure power-frequency voltage signal,
Capacitive divider is used to measure test product both end voltage signal, and Rogowski coil flows through test product electric current for measurement.
Wherein, control circuit, signal conditioning circuit and controller are powered by default power supply；Default power supply connection isolation becomes
Depressor, by isolating transformer to control circuit, signal conditioning circuit and controller output multi-channel voltage, control circuit, signal
Modulate circuit and controller correspond to individually voltage all the way respectively.
Wherein, it is uninterrupted power source to preset power supply.
Wherein, a lateral circuit includes industrial-frequency alternating current potential source and impulse voltage generator；Industrial-frequency alternating current potential source, be tested
Test product and impulse voltage generator three are in parallel.
Wherein, industrial-frequency alternating current potential source includes pressure regulator and testing transformer；Pressure regulator is in parallel with testing transformer.
The beneficial effect brought of technical solution that the application proposes is：
First, can by the way that control circuit, signal conditioning circuit and the corresponding each branch voltage of controller is mutually isolated
Effectively prevent the impulse overvoltage that the impulse voltage generator in a lateral circuit produces from causing damage to control circuit, so as to
Effectively prevent the control measuring apparatus to power frequency continued flow experimental rig from causing to damage.
Secondly as power frequency supply can be controlled to combine pressurization with impact power supply, and measure and obtain testing transformer outlet
Voltage and the voltage and current being applied on test product, and then assess and power frequency arc is extinguished under lightning wave effect to arrester equipment
Ability.
Further, since primary side measuring circuit is using divider measurement power-frequency voltage and product to be tested both end voltage；Adopt
The electric current of product to be tested is flowed through with Rogowski coil measurement.The voltage and current signal that divider is obtained with Rogowski coil measurement is through photoelectricity
Signal condition and A/D conversion circuits are transferred to after isolation, by Voltage to current transducer into being transferred to controller after digital quantity, so that
It can effectively prevent the measured distortion brought by electromagnetic interference problem.
Finally, due to punching is calculated in the power-frequency voltage signal and conduction phase angle input by user that can be obtained according to measurement
Hit the triggering and conducting time of voltage generator, and by relay triggering impulse voltage generator conducting so that impact and power frequency electric
Arbitrary phase superposition is pressed in, and then realizes joint pressurization.
Brief description of the drawings
Fig. 1 is to be shown according to a kind of structure of the control measuring circuit of power frequency continued flow experimental rig of the utility model embodiment
It is intended to；
Fig. 2 is the structure diagram according to a kind of signal conditioning circuit of the utility model embodiment；
Fig. 3 is the structure diagram according to a kind of control circuit of the utility model embodiment；
Fig. 4 is the structure diagram according to a kind of primary side measuring circuit of the utility model embodiment；
Fig. 5 is the structure diagram according to a kind of default power supply of the utility model embodiment；
Fig. 6 is the flow diagram according to a kind of synchronous triggering algorithm of the utility model embodiment；
Fig. 7 is the structure diagram according to a kind of lateral circuit of the utility model embodiment.
Embodiment
With reference to the accompanying drawings and examples, specific embodiment of the present utility model is described in further detail.Below
Embodiment is used to illustrate the utility model, but is not intended to limit the scope of the present invention.
In a specific embodiment, the utility model is described further with reference to attached drawing.Referring to Fig. 1, Fig. 1
A kind of control measuring circuit of power frequency continued flow experimental rig is given, which includes：Primary side measuring circuit 101, signal tune
Manage circuit 102, control circuit 103 and controller 104.
Primary side measuring circuit 101 is used to gather measuring signal from a lateral circuit, and measuring signal is transmitted to signal tune
Manage circuit 102；Signal conditioning circuit 102 is used to carry out signal condition and digital-to-analogue conversion to measuring signal, by transformed measurement
Signal transmission is to controller 104；Controller 104 is used to, according to transformed measuring signal, to 103 output control of control circuit believe
Number, the impulse voltage generator in a lateral circuit is triggered by control circuit 103, produces impulse overvoltage；Wherein, control circuit
103rd, signal conditioning circuit 102 and controller are mutually isolated between each road voltage respectively by power voltage supply all the way.
Wherein, after the measuring signal that primary side measuring circuit 101 is transmitted is transmitted through the fiber to signal conditioning circuit 102,
The optical signal received can be first converted into the electric signal of secondary side by signal conditioning circuit 102, through operation amplifier and level tune
After the signal condition processes such as reason, A/D (mould electricity) conversion circuit can be transmitted to, A/D conversion circuits convert analog signals into numeral
After signal, the control circuit that can be transmitted to computer terminal is handled.Wherein, signal conditioning circuit 102 is secondary side signal
Modulate circuit, Fig. 2 are the structure diagram of signal conditioning circuit 102.
The control measuring circuit for the power frequency continued flow experimental rig that the utility model embodiment provides, by by control circuit
103rd, signal conditioning circuit 102 and the corresponding each branch voltage of controller 104 are mutually isolated, can effectively prevent a lateral circuit
In impulse voltage generator produce impulse overvoltage cause damage to control circuit 103, so as to effectively prevent to power frequency
The control measuring apparatus of operating duty cycle test device causes to damage.
As a kind of alternative embodiment, which further includes the first photoelectric isolation module 105；Primary side measuring circuit 101
For measuring signal to be transmitted to the first photoelectric isolation module 105, the first photoelectric isolation module 105 is used to carry out measuring signal
Phototube Coupling, signal conditioning circuit 102 is transmitted to by the measuring signal after Phototube Coupling.
Wherein, photoelectric isolation module is a kind of new device of transistor Sensitive Apparatus and light emitting diode composition.It
Major function is electric signal when transmission, input are with output, and realization is dielectrically separated from.In addition, signal passes through light in one-way transmission
Being electrically isolated module can realize that feedback-less influences and with characteristics such as strong interference immunity and fast response times.Photoelectric isolation module exists
During work, usually input signal is added to input terminal, so that luminous tube shines.Light-sensitive device output light under Magnetic Optical Radiation
Electric current, so as to fulfill the conversion twice of electric light point.
Phototube Coupling is carried out to measuring signal by the first photoelectric conversion module 105 so that primary side measuring circuit 101
The input terminal of output terminal and signal conditioning circuit 102 realizes electrical isolation, that is, the measuring signal exported is to signal conditioning circuit
102 input terminal enhances the antijamming capability of measuring signal without influence, improves the efficiency of transmission of measuring signal.
As a kind of alternative embodiment, device further includes the second photoelectric isolation module 106；Control circuit 103 is used for basis
Transformed measuring signal, to 106 output control signal of the second photoelectric isolation module；Second photoelectric isolation module 106 be used for pair
Control signal carries out Phototube Coupling, the control signal after isolating to 103 output photoelectric of control circuit.
Phototube Coupling is carried out to control signal by the second photoelectric conversion module 106 so that the output terminal of control circuit 103
And the input terminal of controller 104 realizes electrical isolation, that is, the control signal signal exported is to the input terminal of controller 104 without shadow
Ring, enhance the antijamming capability of measuring signal, improve the efficiency of transmission of control signal.
In addition, after control signal is transmitted to the second photoelectric isolation module 106 by way of data line transfer, light can be carried out
It is electrically isolated.Control signal after Phototube Coupling can be transmitted through the fiber to controller 104.Controller 104 is receiving control letter
After number, corresponding control level can be generated according to the instruction of computer terminal, to control impulse voltage generator impacting electric capacity to charge
Or triggering electric discharge, to produce impulse overvoltage.Wherein, the structure of control circuit 103 can be as shown in Figure 3.
As a kind of alternative embodiment, measuring signal includes power-frequency voltage signal, test product both end voltage signal, flows through test product
Current signal；Primary side measuring circuit 101 includes RC divider, capacitive divider, Rogowski coil, and RC divider is used to survey
Measure power-frequency voltage signal, capacitive divider is used to measure product to be tested both end voltage signal, Rogowski coil for measurement flow through by
Test article electric current.
Specifically, the pulsed capacitance divider in primary side measuring circuit 101, the electricity at measurable product to be tested both ends are passed through
Press signal V1.Pass through the measurable power-frequency voltage signal V2 of RC divider in primary side measuring circuit 101.Surveyed by primary side
Measure the Rogowski coil in circuit 101, the measurable current signal i for flowing through product to be tested.Measuring power-frequency voltage signal V2, be tested
The voltage signal V1 at test product both ends and after flowing through the current signal i of product to be tested, can be using above-mentioned three kinds of signals as measurement
Measuring signal, signal conditioning circuit 102 is transmitted to the first photoelectric conversion module 105 by signal in a manner of optical signal, this
Utility model embodiment is not especially limited this.As shown in figure 4, the left side the first width figure is that the structure of Rogowski coil is shown in Fig. 4
Be intended to, a width figure be the structure diagram of pulsed capacitance divider among Fig. 4, in Fig. 4 on the right of a width figure be RC divider
Structure diagram.
As a kind of alternative embodiment, control circuit 103, signal conditioning circuit 102 and controller 104 are by presetting power supply
Power supply；Default power supply connection isolating transformer, to control circuit 103, signal conditioning circuit 102 and is controlled by isolating transformer
104 output multi-channel voltage of device, control circuit 103, signal conditioning circuit 102 and controller 104 correspond to individually voltage all the way respectively.
Specifically, default power supply can be located at secondary side, be the secondary power supply in Fig. 1.Control circuit 103, primary side are surveyed
Amount circuit 101 and the corresponding default power supply of controller 104 are isolated with primary side electric network source.Default power supply output 220V alternating currents
Pressure, and connect isolating transformer.It is mutually isolated between isolating transformer primary side winding and each vice-side winding.Default power supply exists
By exportable multiple power supplies after isolating transformer vice-side winding, to be respectively control circuit 103, primary side measuring circuit 101
And controller 104 provides voltage all the way.Specifically, presetting the multiple power supplies of power supply output can include：Analog signal conditioner electricity
Road AC power；A/D sample circuit power supplys；Computer power；(Programmable Logic Controller, may be programmed PLC
Logic controller) controller power source；Impulse voltage generator controls power supply and impulse voltage generator action power.Wherein,
The structure of default power supply can be as shown in Figure 5.
As a kind of alternative embodiment, it is uninterrupted power source to preset power supply.
Wherein, between analog signal conditioner circuit power, A/D sample circuits power supply, computer power altogether, three power supplys it
Between ground potential between connected by magnetic bead.Lead between PLC controller power supply and impulse voltage generator control power supply ground potential
Cross magnetic bead connection.Correspondingly, it is mutually isolated between remaining each power supply.It should be noted that controller noted above 104 can be upper
PLC controller is stated, the utility model embodiment is not especially limited this.
Specifically, default power supply can be UPS (Uninterruptible Power System/Uninterruptible
It is Power Supply, uninterrupted) power supply, the utility model embodiment is not especially limited this.For ups power, it can be incited somebody to action
Direct current energy supplies 220V alternating currents by inverter switch transition mode to load continuous, so that load maintains normal work
Make, and the software and hardware of load can be protected without damage.
For the ease of understanding the control process of impulse overvoltage, now the power frequency continued flow that the utility model embodiment provides is filled
The synchronous trigger method put illustrates.Wherein, which can be pre-configured in computer terminal, the utility model embodiment
This is not especially limited.Specifically, the input quantity of synchronous triggering algorithm is power-frequency voltage, surge voltage amplitude and triggering phase
Parallactic angle.The amplitude and current phase angle of power-frequency voltage is obtained by calculation, reaches triggering phase in power-frequency voltage current phase angle
During parallactic angle, instruction is sent to controller 104, control impulse voltage generator triggering produces impulse overvoltage.Surge voltage amplitude
Signal is input to the processor of computer terminal, the capacitance charging of the processor control impulse voltage generator of computer terminal by user
Time and impact ball stand-off distance are from and then controlling surge voltage amplitude.Wherein, the control process of synchronous triggering algorithm refers to Fig. 6.
As a kind of alternative embodiment, one time lateral circuit includes industrial-frequency alternating current potential source and impulse voltage generator；Power frequency
Alternating-current voltage source, product to be tested and impulse voltage generator three are in parallel.
As a kind of alternative embodiment, industrial-frequency alternating current potential source includes pressure regulator and testing transformer；Pressure regulator and examination
Test transformers connected in parallel.
Specifically, as shown in Figure 7.Dotted line frame 1 represents industrial-frequency alternating current potential source in Fig. 7, by network voltage AC input, connection
To pressure regulator and testing transformer T.Wherein, testing transformer output 50Hz power-frequency voltages.Dotted line frame 2 represents surge voltage hair
Raw device, when triggered gap punctures, charging capacitor produces surge voltage to load discharge.Dotted line frame 3 represents product to be tested, wherein S1
Represent the series gap of product to be tested, RT1 represents the ZnO resistors of product to be tested；S2 represents surge voltage source and power frequency supply
Between batching sphere gap；RT2 indication transformers outlet protection arrester, L and R represent protection inductance and protective resistance, use respectively
In protection test transformer from damage.V1 and V2 represents voltage and transformer output port voltage on test product, i tables respectively
Show the electric current for flowing through test product, V1, V2 and i belong to measured, and measuring circuit 102 is transferred to as measuring signal.
The utility model embodiment can control power frequency supply to combine pressurization with impact power supply, and measure and obtain experiment transformation
Device exit potential and the voltage and current being applied on test product, and then assess and work is extinguished under lightning wave effect to arrester equipment
The ability of frequency electric arc.
The primary side measuring circuit 101 that the utility model embodiment provides is using divider measurement power-frequency voltage and test product
Both end voltage；The electric current of test product is flowed through using Rogowski coil measurement.The voltage and current that divider is obtained with Rogowski coil measurement is believed
Number signal condition and A/D conversion circuits are transferred to after Phototube Coupling, by Voltage to current transducer into being transferred to control after digital quantity
Device 104 processed.The control measuring circuit that the utility model embodiment provides can effectively prevent from bringing because of electromagnetic interference problem
Measured distortion.
The control circuit 103 of the utility model embodiment is according to the obtained power-frequency voltage signal of measurement and input by user leads
The triggering and conducting time of impulse voltage generator is calculated in logical phase angle, and is led by relay triggering impulse voltage generator
It is logical so that impact and power-frequency voltage realize joint pressurization in any Phase Stacking.
The power unit of the utility model is individually powered using ups power, control circuit 103, primary side measuring circuit 101
And it is mutually isolated between the power supply of controller 104, it can effectively prevent the impulse overvoltage of impulse voltage generator generation
Cause damage to control circuit 103 and primary side measuring circuit 101.
Finally, the present processes are only preferable embodiment, are not intended to limit the scope of protection of the utility model.
Where within the spirit and principles of the present invention, any modification, equivalent replacement, improvement and so on, should be included in this reality
Within new protection domain.
Claims (8)
- A kind of 1. control measuring circuit of power frequency continued flow experimental rig, it is characterised in that including：Primary side measuring circuit, signal Modulate circuit, control circuit and controller；The primary side measuring circuit is used to gather measuring signal from a lateral circuit, and the measuring signal is transmitted to the letter Number modulate circuit；The signal conditioning circuit is used to carry out signal condition and digital-to-analogue conversion to the measuring signal, after conversion Measuring signal be transmitted to the controller；The controller is used for according to the transformed measuring signal, to the control Circuit output control signal, triggers the impulse voltage generator in a lateral circuit by the control circuit, produces impact Overvoltage；Wherein, the control circuit, the signal conditioning circuit and the controller are respectively by power voltage supply all the way, each road It is mutually isolated between voltage.
- 2. circuit according to claim 1, it is characterised in that described device further includes the first photoelectric isolation module；It is described Primary side measuring circuit is used to the measuring signal being transmitted to first photoelectric isolation module, the first Phototube Coupling mould Block is used to carry out Phototube Coupling to the measuring signal, and the measuring signal after Phototube Coupling is transmitted to the signal condition electricity Road.
- 3. circuit according to claim 1, it is characterised in that described device further includes the second photoelectric isolation module；It is described Control circuit is used for according to the transformed measuring signal, to the second photoelectric isolation module output control signal；It is described Second photoelectric isolation module is used to carry out Phototube Coupling to the control signal, to after the control circuit output Phototube Coupling Control signal.
- 4. circuit according to claim 1, it is characterised in that the measuring signal includes power-frequency voltage signal, test product two Terminal voltage signal, flow through test product current signal；The primary side measuring circuit includes RC divider, capacitive divider, Roche Coil, the RC divider are used to measure the power-frequency voltage signal, and capacitive divider is used to measure product to be tested both ends electricity Signal is pressed, Rogowski coil flows through product to be tested electric current for measurement.
- 5. circuit according to claim 1, it is characterised in that the control circuit, the signal conditioning circuit and described Controller is powered by default power supply；The default power supply connection isolating transformer, by the isolating transformer to the control Circuit, the signal conditioning circuit and the controller output multi-channel voltage processed, the control circuit, the signal conditioning circuit And the controller corresponds to individually voltage all the way respectively.
- 6. circuit according to claim 5, it is characterised in that the default power supply is uninterrupted power source.
- 7. circuit according to claim 4 a, it is characterised in that lateral circuit includes industrial-frequency alternating current potential source and punching Hit voltage generator；The industrial-frequency alternating current potential source, the product to be tested and the impulse voltage generator three are in parallel.
- 8. circuit according to claim 7, it is characterised in that the industrial-frequency alternating current potential source includes pressure regulator and experiment Transformer；The pressure regulator is in parallel with the testing transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720881333.9U CN207366648U (en) | 2017-07-19 | 2017-07-19 | A kind of control measuring circuit of power frequency continued flow experimental rig |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720881333.9U CN207366648U (en) | 2017-07-19 | 2017-07-19 | A kind of control measuring circuit of power frequency continued flow experimental rig |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207366648U true CN207366648U (en) | 2018-05-15 |
Family
ID=62421611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720881333.9U Active CN207366648U (en) | 2017-07-19 | 2017-07-19 | A kind of control measuring circuit of power frequency continued flow experimental rig |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207366648U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107356833A (en) * | 2017-07-19 | 2017-11-17 | 国网湖南省电力公司 | A kind of control measuring circuit of power frequency continued flow experimental rig |
| CN109581114A (en) * | 2018-12-11 | 2019-04-05 | 武汉水院电气有限责任公司 | A kind of power frequency component and impact signal superposition phase control circuit |
-
2017
- 2017-07-19 CN CN201720881333.9U patent/CN207366648U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107356833A (en) * | 2017-07-19 | 2017-11-17 | 国网湖南省电力公司 | A kind of control measuring circuit of power frequency continued flow experimental rig |
| CN109581114A (en) * | 2018-12-11 | 2019-04-05 | 武汉水院电气有限责任公司 | A kind of power frequency component and impact signal superposition phase control circuit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9482699B2 (en) | Method and apparatus for monitoring high voltage bushings safely | |
| CN104181490B (en) | A kind of big current temporary state characteristic detection device of electronic current mutual inductor | |
| CN103969527A (en) | Charge-discharge service life detection device of high-voltage ceramic capacitor | |
| CN104502762B (en) | Bushing shell for transformer monitoring system data validity pick-up unit | |
| CN105137135A (en) | Simulated electromagnetic disturbance source for isolating switch | |
| CN207366648U (en) | A kind of control measuring circuit of power frequency continued flow experimental rig | |
| CN202177692U (en) | Lightning arrester counter comprehensive calibration device | |
| Yang et al. | Measurement of lightning-induced overvoltage in power distribution lines using ceramic-capacitor insulator | |
| CN201331555Y (en) | Power unit input open-phase detector of high-voltage inverter | |
| CN101447667A (en) | High voltage transducer power unit input phase loss detector | |
| RU119120U1 (en) | DEVICE FOR VOLTAGE MEASUREMENT IN A HIGH VOLTAGE CIRCUIT WITH REMOTE INFORMATION TRANSMISSION | |
| CN203502581U (en) | AIS electronic transformer test system based on disconnecting switch switching-on and switching-off capacitive small current | |
| WO2013098226A1 (en) | Combined transformer for power system | |
| CN204649860U (en) | A kind of multifunctional high pressure fuse device for detecting performance | |
| CN107356833A (en) | A kind of control measuring circuit of power frequency continued flow experimental rig | |
| CN103472389A (en) | Testing device for electric leakage reclosure breaker | |
| CN208094174U (en) | A kind of Novel intelligent breaker device | |
| CN203732606U (en) | Insulation parameter measuring device for power grid with neutral point grounded via resistance | |
| CN104635043A (en) | Electronic sensing type high-voltage metering device and remote testing system | |
| CN104375031A (en) | On-line measurement device for power supply system surge protection device insulation resistance | |
| CN105510731B (en) | Power transformer medium voltage side power grid parallel resonance detects alarm method and system | |
| CN209280789U (en) | A kind of device measuring capacitance current by arc suppression coil | |
| CN210665864U (en) | Single-phase grounding capacitance current testing device of high-voltage power grid | |
| CN207424128U (en) | For low tension switch and control device harmonic wave jamming immunity tester | |
| Oliveira | Design of a low-cost residual current sensor for LVDC power distribution application |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |