CN107797007A - A kind of check system and the method for inspection of live capacitive apparatus on-Line Monitor Device - Google Patents
A kind of check system and the method for inspection of live capacitive apparatus on-Line Monitor Device Download PDFInfo
- Publication number
- CN107797007A CN107797007A CN201711137196.9A CN201711137196A CN107797007A CN 107797007 A CN107797007 A CN 107797007A CN 201711137196 A CN201711137196 A CN 201711137196A CN 107797007 A CN107797007 A CN 107797007A
- Authority
- CN
- China
- Prior art keywords
- signal
- live
- line monitor
- monitor device
- capacitive apparatus
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000007689 inspection Methods 0.000 title abstract description 5
- 230000003993 interaction Effects 0.000 claims abstract description 25
- 239000002131 composite material Substances 0.000 claims abstract description 24
- 238000005259 measurement Methods 0.000 claims abstract description 24
- 238000005070 sampling Methods 0.000 claims abstract description 21
- 230000005236 sound signal Effects 0.000 claims abstract description 16
- 230000003321 amplification Effects 0.000 claims abstract description 8
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 8
- 230000005540 biological transmission Effects 0.000 claims abstract description 5
- 230000003750 conditioning effect Effects 0.000 claims description 25
- 238000000605 extraction Methods 0.000 claims description 18
- 230000005611 electricity Effects 0.000 claims description 10
- 238000012545 processing Methods 0.000 claims description 9
- 238000004364 calculation method Methods 0.000 claims description 6
- 238000012806 monitoring device Methods 0.000 claims description 6
- 239000000284 extract Substances 0.000 claims description 4
- 238000012544 monitoring process Methods 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 239000004020 conductor Substances 0.000 claims description 3
- 230000010363 phase shift Effects 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 239000000243 solution Substances 0.000 claims 1
- 238000012360 testing method Methods 0.000 description 6
- 238000009413 insulation Methods 0.000 description 5
- 230000007547 defect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000003449 preventive effect Effects 0.000 description 3
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 208000035126 Facies Diseases 0.000 description 1
- 108091000080 Phosphotransferase Proteins 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 102000020233 phosphotransferase Human genes 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 229960001296 zinc oxide Drugs 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
Abstract
The present invention provides a kind of check system and the method for inspection of live capacitive apparatus on-Line Monitor Device, and the check system includes voltage sampling device, FM modulated transmitting devices, FM FM Receivers, human-computer interaction device, electric current output lead and measurement sensor.The method of calibration is：First pass through voltage sampling device and obtain PT voltage signals corresponding to live capacitive apparatus as operation reference voltage signal；Then FM transmission is carried out after the operation reference voltage signal being modulated into composite audio signal by FM modulated transmitting devices, and to be wirelessly transmitted in FM FM Receivers, the reference current signal of output and the same frequency of PT reference voltages after demodulated, programmed amplitude modulation phase modulation and amplification, phase and the program-controlled setting of amplitude；By the reference current signal and the parameter superposition of on-Line Monitor Device initial current signal, electric current, capacitance and dielectric loss theory increment size are obtained；The reference current signal is injected into on-Line Monitor Device again, measuring actual current, capacitance and dielectric loss by on-Line Monitor Device rises in value；Finally theoretical increment size and actual increment are contrasted, verify whether the on-Line Monitor Device is qualified.
Description
Technical field
The present invention relates to electrical equipment online supervision field, specifically a kind of school of live capacitive apparatus on-Line Monitor Device
Check system and the method for inspection.
Background technology
The high voltage electric equipment run in power network, when it is internal exist because manufacture bad, aging and external force is destroyed etc. because
Caused by element during insulation defect, equipment fault or insulation fault are will result in, seriously affects the normal operation of power network.To prevent
The generation of such serious accident, the traditional method used at present are after putting equipment in service, and periodical power failure carries out preventative examination
Test and overhaul, to detect the insulation defect of device interior in time.But the experimental condition of power failure preventive trial and operation shape
State difference is larger, and Dielectric Loss Test is typically to be tested under 10kV voltages, it is impossible to is correctly diagnosed to be high-tension apparatus under running conditions
Insulation status, it is more difficult to discovery the defects of developing between preventive trial interval twice, this will directly influence preventative
The test effect of experiment.With the development of national economy, the whole society is to the reliability of supply of electric power and wanting for reduction power off time
Seek more and more higher；Power system scale is gradually developed, and traditional periodical power failure preventive trial is due to time-consuming, expense being present
Many drawbacks such as power and test effect are undesirable and the requirement that increasingly can not meet power grid security, functions reliably and efficiently run, because
This or live monitoring online to the automatic monitoring of electric equipment operation and insulation status, realizes that repair based on condition of component has become following high pressure
The inevitable development direction of equipment test.
It is several that the work of Current Domestic high-voltage isulation charging test is concentrated mainly on Zinc-Oxide Arrester, capacitance type equipment etc.
Aspect.Increasing on-line monitoring surveys device and operation has been put into, and whether its working condition is normally directly connected to power network
The assessment of system safety, so the detection to this kind of on-Line Monitor Device examines work extremely urgent.
Tradition, which carries out detection to line monitoring device, the verification mode of the quasi- capacitance-resistance of normal voltage mark-on, but to produce any
The electric current of size and angle, required standard capacitance-resistance quantity is very more, and volume is big, and weight is big, is not easy onsite moving, and adjust and differentiate
Rate is not high；Other existing wired mode takes the presence problems with of PT voltage references：When PT voltage devices range calibration point holds
Property equipment farther out when, it is necessary to draw very long signal wire, signal can distort and decay；When different calibration points move calibration system,
Need manually to receive signal wire, discharge signal line, waste of manpower and time, calibration efficiency are low.
The content of the invention
It is an object of the invention to provide a kind of check system and the method for inspection of live capacitive apparatus on-Line Monitor Device,
To solve the problems, such as in background technology.
To achieve the above object, the technical scheme taken of the present invention is：
A kind of check system of live capacitive apparatus on-Line Monitor Device, including：
Voltage sampling device, PT voltage samplings corresponding with live capacitive apparatus
Terminal connects, and for obtaining the operation reference voltage of live capacitive apparatus, and sends the FM FM transmissions dress to
Put；
FM modulated transmitting devices, are connected with voltage sampling device, for the operation reference for collecting voltage sampling device
Voltage conversion is stereo composite signal, and is transmitted wirelessly to the FM FM Receivers；
FM FM Receivers, for receiving electricity on the basis of the audio signal and conversion that FM modulated transmitting devices send
Signal output is flowed to human-computer interaction device and electric current output lead；
Human-computer interaction device, it is connected with the FM FM Receivers, for showing the FM FM Receivers output
Reference current signal parameter and to the FM FM Receivers output reference current signal amplitude and phase angle
Setting is adjusted, the phase of reference current signal is remained the phase of setting with the power-frequency voltage signal of live capacitive apparatus
Value, and amplitude is arranges value；
Electric current output lead, its both ends are connected with the current output terminal of the FM FM Receivers, treated for being located in
In the measurement sensor of the on-Line Monitor Device of the live capacitive apparatus of survey；
Measurement sensor, it is set on the down conductor of the live capacitive apparatus, and is connected with on-Line Monitor Device,
For by after human-computer interaction device regulation is set and current output terminal through the FM FM Receivers is delivered to institute
The reference current signal stated in electric current output lead is injected into on-Line Monitor Device；
The human-computer interaction device is additionally operable to read the parameter conduct for the current signal that the on-Line Monitor Device is currently shown
Initial value, the parameter of the reference current signal with setting are overlapped computing, calculate the theoretical increasing of electric current, capacitance and dielectric loss
Value, the electric current that on-Line Monitor Device is measured, capacitance and the actual increment size of dielectric loss and electric current theory increment size are contrasted,
Calculation error, verify whether the measurement of on-Line Monitor Device is accurate.
Further, the FM modulated transmitting devices include voltage signal conditioning module and FM radiating circuits；The voltage
Signal-regulated kinase includes preemphasis circuit, amplitude limiter circuit, low-pass filter circuit and stereo modulation circuit；The FM transmittings electricity
Road includes high-frequency generator, high-frequency amplifier and phase-locked loop frequency synthesizer.
Further, the FM FM Receivers include FM receiving circuits, power frequency component extraction and conditioning module, program control
Amplitude modulation and phase modulation circuit, control circuit, central processing unit and power amplifier module, the FM receiving circuits are used to receive FM FM transmissions dress
The stereo composite signal of transmission is put, is then output to power frequency component extraction with conditioning module, stereo composite signal is entered
The power-frequency voltage signal of live capacitive apparatus is exported after row demodulation, extraction, amplification, is then fed to programmed amplitude modulation phase modulation circuit,
The central processing unit is connected with human-computer interaction device, for receiving the reference current amplitude and phase of human-computer interaction device setting
Parameter, phase-modulation and amplitude-modulation is carried out to programmed amplitude modulation phase modulation circuit by control circuit, makes reference current signal and power-frequency voltage signal
Phase synchronization, the power amplifier module will the reference current signal that modulated amplification after be output to electric current output lead.
Further, the power frequency component extraction includes modulate circuit, bandpass filter and amplifying circuit with conditioning module,
The modulate circuit is used for the mixed frequency signal that composite audio signal is demodulated from stereo composite signal, the bandpass filter
For extracting the power-frequency voltage signal of live capacitive apparatus from mixed frequency signal, the amplifying circuit is used for the power frequency electric
Programmed amplitude modulation phase modulation circuit is input to after pressure signal amplification.
Further, the programmed amplitude modulation phase modulation circuit, is divided into amplitude modulation module and phase modulation module, amplitude modulation module by amplifier and
14 bit digital potentiometers form programmable amplifier, and amplitude adjusts resolution ratio within 1 μ A, and phase modulation circuit is by amplifier, 14 bit digitals
Potentiometer and electric capacity composition phase shift, phase adjusted precision is within 0.01 degree, and 14 bit digital potentiometers are by centre
Reason device is controlled, and realizes amplitude modulation and the phase modulation of reference signal.
Further, the parameter of the current signal include total current, current in resistance property, capacity current, phase angle difference, dielectric loss and
Capacitance.
Further, the voltage sampling device is high-precision transformer.
A kind of method of calibration of live capacitive apparatus on-Line Monitor Device, carried out using above-mentioned check system, methods described
Comprise the following steps：
Step 1：Selection needs verified live capacitive apparatus on-Line Monitor Device, reads the live capacitive apparatus and exists
The parameter for the current signal that line monitoring device is currently shown is as initial value；
Step 2：The electric current output lead that current output terminal with FM FM Receivers is connected is located in and step 1
In the middle measurement sensor for needing verified live capacitive apparatus on-Line Monitor Device to connect；
Step 3：The operation reference voltage of live capacitive apparatus is obtained by voltage sampling device, as operation with reference to electricity
The voltage input end of signal input FM modulated transmitting devices is pressed, then the voltage signal conditioning module through FM modulated transmitting devices will
After the operation reference voltage signal received is converted into composite audio signal, by the FM radiating circuits of FM modulated transmitting devices with
It is transmitted wire-lessly to FM FM Receivers；
Step 4：By the composite audio signal in step 3, pass through the wireless FM signal receiving ends of FM FM Receivers
Input in FM receiving circuits, power frequency component extraction is then output to in conditioning module, being carried through power frequency component by FM receiving circuits
The mixed frequency signal that composite audio signal is demodulated with the modulate circuit of conditioning module is taken, and is therefrom extracted by bandpass filter
The power-frequency voltage signal of live capacitive apparatus, it will finally be inputted after the amplified circuit amplification of the power-frequency voltage signal extracted
To programmed amplitude modulation phase modulation circuit；
Step 5：The power-frequency voltage signal that is extracted in step 4 is carried out by programmed amplitude modulation phase modulation circuit program control phase modulation and
Amplitude modulation, export and run current signal of the reference voltage signal with phase as reference signal with PT, and by human-computer interaction device
Setting is adjusted in phase angle and amplitude to the reference current signal, and the phase angle and PT operations for making reference current signal refer to
Voltage signal remains the phase value of setting, and amplitude is arranges value；
Step 6：By the current signal read in the parameter and step 1 of the reference current signal set in step 5
Parameter is overlapped computing, calculates electric current, capacitance and dielectric loss theory increment size；
Step 7：The reference current signal that phase angle and amplitude size are set in step 5 is amplified by power amplifier module
It is output to afterwards on the electric current output lead being connected with the current output terminal of FM FM Receivers, it is then defeated by being set in electric current
The measurement sensor being connected with live capacitive apparatus on-Line Monitor Device gone out on wire is injected into live capacitive apparatus and supervised online
Survey in device, and read now at the scene in capacitive apparatus on-Line Monitor Device it is shown go out current signal parameter measurement
Value, it is the actual increment size of electric current, capacitance and dielectric loss that the live capacitive apparatus on-Line Monitor Device measures to subtract initial value；
Step 8：Electric current, the electricity that electric current, capacitance and the actual increment size of dielectric loss that step 7 obtains are obtained with step 6
Capacity and dielectric loss theory increment size are contrasted, calculation error, verify live capacitive apparatus on-Line Monitor Device measurement whether
Accurately.
Further, the step 8 verify live capacitive apparatus on-Line Monitor Device measurement whether be specially accurately：
When error amount is in allowed band, then judge on-Line Monitor Device to be qualified；When error amount exceedes allowed band, then judgement is online
Monitoring device is unqualified.
Further, on-Line Monitor Device is capacitance type equipment on-Line Monitor Device or capacitive on-line measuring device or kept away
Thunder device on-Line Monitor Device.
Compared with relevant art, the advantages of the present invention are：
1) digital program controlled the mode calibration source size of current and angle in the present invention can be any in regulation resolving range
Set, meet calibration range requirement.
2) transmitted using wireless PT voltages, the trouble of unwrapping wire take-up can be saved, save manpower, the time, calibration is convenient, effect
Rate is high.
3) wireless frequency modulation mode, live anti-electromagnetic field jamming performance is strong, the reference voltage signal width that calibration system restores
It is worth phase stabilization.
Brief description of the drawings
Fig. 1 is the structural representation of the check system of the live capacitive apparatus on-Line Monitor Device of the present invention；
Fig. 2 is the field connection theory diagram of the check system of the live capacitive apparatus on-Line Monitor Device of the present invention；
Fig. 3 is the schematic block circuit diagram of FM modulated transmitting devices in the present invention；
Fig. 4 is the schematic block circuit diagram of FM FM Receivers in the present invention.
In figure：1-voltage sampling device；2-FM modulated transmitting devices；2-1-voltage signal conditioning module；2-1a-pre-
Emphasizer；2-1b-amplitude limiter circuit；2-1c-low-pass filter circuit；2-1d-stereo modulation circuit；2-2-FM transmitting electricity
Road；3-FM FM Receivers；3-1-FM receiving circuits；3-2-power frequency component extraction and conditioning module；3-2a-conditioning electricity
Road；3-2b-bandpass filter；3-2c-amplifying circuit；3-3-programmed amplitude modulation phase modulation circuit；3-4-control circuit；3-5—
Central processing unit；3-6-power amplifier module；4-human-computer interaction device；5-electric current output lead；6-measurement sensor；7-
Line monitoring device；8-live capacitive apparatus；Under 9-grounding lead.
Embodiment
Below in conjunction with the accompanying drawing in the present invention, the technical scheme in the present invention is clearly and completely described.
As shown in Figures 1 and 2, the check system of a kind of live capacitive apparatus on-Line Monitor Device provided by the invention, bag
Include voltage sampling device 1, FM modulated transmitting devices 2, FM FM Receivers 3, human-computer interaction device 4, electric current output lead 5 and
Measurement sensor 6.
The voltage sampling device 1, it is connected with the voltage input end of live capacitive apparatus 8, is set for obtaining live capacitive
Standby 8 operation reference voltage, and send FM modulated transmitting devices 2 to, voltage sampling device 1 is high-precision transformation in the present embodiment
Device；
The FM modulated transmitting devices 2, are connected with voltage sampling device 1, show for collect voltage sampling device 1
The operation reference voltage of field capacitive apparatus 8 is converted to stereo composite signal, and is transmitted wirelessly to FM FM receptions dress
Put 3；
The FM FM Receivers 3, and the wireless connection of FM modulated transmitting devices 2, for receiving FM modulated transmitting devices 2
The audio signal that transmitted simultaneously converts current signal and exported to human-computer interaction device 4 and electric current output lead 5；
The human-computer interaction device 4, is connected with FM FM Receivers 3, for showing the output of FM FM Receivers 3
Setting is adjusted in the amplitude and phase angle of the parameter of current signal and the current signal exported to FM FM Receivers 3；
The electric current output lead 5, its both ends is connected with the current output terminal of FM FM Receivers 3, for being located in
In the measurement sensor 6 of the on-Line Monitor Device 7 of live capacitive apparatus 8 to be measured；
The measurement sensor 6, be arranged on the down conductor 9 of the live capacitive apparatus 8, and with online prison to be measured
Survey device 7 to connect, for by after human-computer interaction device 4 is adjusted and set and current output terminal through FM FM Receivers 3 is defeated
The current signal delivered in electric current output lead 5 is injected into on-Line Monitor Device 7.
As shown in figure 3, the FM modulated transmitting devices 2 include voltage signal conditioning module 2-1 and FM radiating circuit 2-2；
Voltage signal conditioning module 2-1 includes preemphasis circuit 2-1a, amplitude limiter circuit 2-1b, low-pass filter circuit 2-1c and three-dimensional tone
Circuit 2-1d processed；FM radiating circuits 2-2 includes high-frequency generator, high-frequency amplifier and phase-locked loop frequency synthesizer.
The operation reference voltage signal collected is input in voltage signal conditioning module 2-1 by voltage sampling device 1, warp
Output includes the stereo composite signal of audio signal, subcarrier signal and pilot signal after frequency modulation modulation, then exports to FM
In radiating circuit 2-2, using FM radiating circuits 2-2 lock facies principle, the stereo composite signal of outputting stable frequency simultaneously passes through
The mode being wirelessly transferred is sent.
As shown in figure 4, FM FM Receivers 3 include FM receiving circuits 3-1, power frequency component extraction with conditioning module 3-2,
Programmed amplitude modulation phase modulation circuit 3-3, control circuit 3-4, central processing unit 3-5 and power amplifier module 3-6；Power frequency component extracts and conditioning
Module 3-2 includes modulate circuit 3-2a, bandpass filter 3-2b and amplifying circuit 3-2c.
FM receiving circuits 3-1 wirelessly receives the stereo compound letter that FM modulated transmitting devices 2 are sent out
Number, and be transferred in power frequency component extraction and conditioning module 3-2, the stereo composite signal by modulate circuit 3-2a to reception
It is demodulated, and the power-frequency voltage signal of live capacitive apparatus 8 is extracted by bandpass filter 3-2b, then by amplifying electricity
The power-frequency voltage signal of extraction is amplified and is input in programmed amplitude modulation phase modulation circuit 3-3, programmed amplitude modulation phase modulation circuit by road 3-2c
3-3 includes modulation circuit and phase modulation circuit；Modulation circuit is the mlultiplying circuit of amplifier, precision resistance and digital potentiometer composition,
By adjusting the resistance of digital potentiometer, the proportionality coefficient of mlultiplying circuit can be adjusted, and then realizes that the amplitude of input voltage is adjusted
It is whole；Calibration system sets the reference current signal of output and the power-frequency voltage signal of extraction fixed proportion relation to be present, therefore can
To carry out proportionality coefficient amendment by modulation circuit.Phase modulation circuit is amplifier, precision resistance, precision capacitance and digital potentiometer group
Into constant amplitude RC phase-shift circuits, by the resistance for adjusting digital potentiometer, it is possible to achieve the phase adjustment of input voltage signal, if
Put the reference current signal angle of output and the power-frequency voltage signal of extraction has that fixed angle is poor, set plus calibration system
Phase angle difference, it can be modified by phase modulation circuit.Central processing unit 3-5 is connected with human-computer interaction device 4 by 485 modes
Connect, receive reference current amplitude and phase parameter that calibration software is set；Digital potentiometer interface is I2C, and control circuit 3-4 is
I2C buses and interface circuit, central processing unit 3-5 are carried out data configuration to digital potentiometer, realized by control circuit 3-4
Resistance value adjusting.Through programmed amplitude modulation phase modulation circuit 3-3 phase-modulation and amplitude-modulations, make the phase of reference current signal and power-frequency voltage signal same
Step, it is finally by power amplifier module 3-6 that current output terminal of the reference current signal modulated through FM FM Receivers 3 is defeated again
Go out into electric current output lead 5.
The human-computer interaction device is additionally operable to read the parameter conduct for the current signal that the on-Line Monitor Device is currently shown
Initial value, the parameter of the reference current signal with setting are overlapped computing, calculate the theoretical increasing of electric current, capacitance and dielectric loss
Value, the electric current that on-Line Monitor Device is measured, capacitance and the actual increment size of dielectric loss and electric current theory increment size are contrasted,
Calculation error, verify whether the measurement of on-Line Monitor Device is accurate.
A kind of method of calibration of live capacitive apparatus on-Line Monitor Device provided by the invention, it is to be based on above-mentioned check system
The method verified to live capacitive apparatus on-Line Monitor Device, specifically include following steps：
Step 1：Selection needs verified on-Line Monitor Device 7, reads the electricity that the on-Line Monitor Device 7 is currently shown
The parameter for flowing signal is used as initial value, the parameter of the current signal including total current, current in resistance property, capacity current, phase angle difference,
Dielectric loss and capacitance, the parameter of the current signal can be read by human-computer interaction device 4 to be given people by being inputted after the reading of other devices
Machine interactive device 4；
Step 2：The electric current output lead 5 that current output terminal with FM FM Receivers 3 is connected is located in and step
Needed in one in the measurement sensor 6 that verified on-Line Monitor Device 7 connects；
Step 3：The operation reference voltage of live capacitive apparatus 8 is obtained by voltage sampling device 1, is referred to as operation
Voltage signal, it is input in FM modulated transmitting devices 2 by the voltage input end of FM modulated transmitting devices 2, is then sent out through FM frequency modulation
After the operation reference voltage signal received is converted into composite audio signal by the voltage signal conditioning module 2-1 of injection device 2, lead to
The FM radiating circuits for crossing FM modulated transmitting devices 2 are wirelessly transmitted to FM FM Receivers 3；
Step 4：By the composite audio signal in step 3, pass through the wireless FM signal receiving ends of FM FM Receivers 3
Input in FM receiving circuits 3-1, be then output to by FM receiving circuits 3-1 in power frequency component extraction and conditioning module 3-2, through work
Frequency signal extraction and conditioning module 3-2 modulate circuit 3-2a demodulate the mixed frequency signal of composite audio signal, and pass through band logical
Wave filter 3-2b therefrom extracts the power-frequency voltage signal of live capacitive apparatus, the power-frequency voltage signal that will finally extract
Programmed amplitude modulation phase modulation circuit 3-3 is input to after amplified circuit 3-2c amplifications；
Step 5：Program control tune is carried out to the power-frequency voltage signal extracted in step 4 by programmed amplitude modulation phase modulation circuit 3-3
Phase and amplitude modulation, export and run current signal of the reference voltage signal with phase as reference current signal with PT, and pass through man-machine friendship
Setting is adjusted to the phase angle of the reference current signal and amplitude in mutual device 4, makes the phase and power frequency of reference current signal
Voltage signal remains the phase value of setting, and amplitude is arranges value；
Step 6：In the calibration software that human-computer interaction device 4 is run, the reference current signal that will be set in step 5
Parameter and step 1 in the parameter of current signal that reads be overlapped computing, it is theoretical to calculate electric current, capacitance and dielectric loss
Increment size；
Step 7：The reference current signal that phase angle and amplitude size are set in step 5 is passed through into power amplifier module 3-6
It is output to after amplification on the electric current output lead 5 being connected with the current output terminal of FM FM Receivers 3, then by being set in
The measurement sensor 6 being connected with on-Line Monitor Device 7 on electric current output lead 5 is injected into on-Line Monitor Device 7, and is read
Take now in on-Line Monitor Device 7 it is shown go out current signal measured value of parameters, it is the live capacitive to subtract initial value
The actual increment size of electric current, capacitance and dielectric loss that equipment on-line monitoring device measures；
Step 8：Human-computer interaction device 4 run calibration software in, by the electric current obtained in step 7, capacitance and
The actual increment size of dielectric loss is contrasted with electric current, capacitance and the dielectric loss theory increment size calculated in step 6, calculation error,
Verify whether the measurement of on-Line Monitor Device 7 is accurate；When error amount is in allowed band, then on-Line Monitor Device is judged to close
Lattice；When error amount exceedes allowed band, then judge on-Line Monitor Device to be unqualified.
In actual applications, the on-Line Monitor Device 7 in step 1 is that capacitance type equipment on-Line Monitor Device or capacitive exist
Line detector or arrester on-Line Monitor Device.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any
Belong to those skilled in the art the invention discloses technical scope in, the change or replacement that can readily occur in, all should
It is included within the scope of the present invention.
Claims (10)
- A kind of 1. check system of live capacitive apparatus on-Line Monitor Device, it is characterised in that：IncludingVoltage sampling device (1), PT voltage samplings terminal connection corresponding with live capacitive apparatus (8), for obtaining live appearance The operation reference voltage of property equipment (8), and send the FM modulated transmitting devices (2) to；FM modulated transmitting devices (2), it is connected with voltage sampling device (1), for the operation for collecting voltage sampling device (1) Reference voltage is converted to stereo composite signal, and is transmitted wirelessly to the FM FM Receivers (3)；FM FM Receivers (3), on the basis of receiving the audio signal and conversion that FM modulated transmitting devices (2) send Current signal is exported to human-computer interaction device (4) and electric current output lead (5)；Human-computer interaction device (4), it is connected with the FM FM Receivers (3), for showing the FM FM Receivers (3) The parameter of the reference current signal of output and to the FM FM Receivers (3) output reference current signal amplitude and Setting is adjusted in phase angle, the phase of reference current signal is remained setting with the power-frequency voltage signal of live capacitive apparatus Phase value, and amplitude is arranges value；Electric current output lead (5), its both ends is connected with the current output terminal of the FM FM Receivers (3), for being located in In the measurement sensor (6) of the on-Line Monitor Device (7) of live capacitive apparatus (8) to be measured；Measurement sensor (6), it is set on the down conductor (9) of the live capacitive apparatus (8), and and on-Line Monitor Device (7) connect, for will through the human-computer interaction device (4) adjust set after and through the electric current of the FM FM Receivers (3) The reference current signal that output end is delivered in the electric current output lead (5) is injected into on-Line Monitor Device (7)；The parameter that the human-computer interaction device (4) is additionally operable to read the current signal that the on-Line Monitor Device (7) is currently shown is made For initial value, the parameter of the reference current signal with setting is overlapped computing, and it is theoretical to calculate electric current, capacitance and dielectric loss Increment size, the actual increment size of electric current, capacitance and dielectric loss that on-Line Monitor Device (7) is measured and electric current theory increment size are carried out Whether contrast, calculation error, the measurement of checking on-Line Monitor Device (7) are accurate.
- 2. the check system of live capacitive apparatus on-Line Monitor Device as claimed in claim 1, it is characterised in that：The FM is adjusted The injection device (2) that takes place frequently includes voltage signal conditioning module (2-1) and FM radiating circuits (2-2)；The voltage signal conditioning module (2-1) includes preemphasis circuit (2-1a), amplitude limiter circuit (2-1b), low-pass filter circuit (2-1c) and stereo modulation circuit (2-1d)；The FM radiating circuits (2-2) include high-frequency generator, high-frequency amplifier and phase-locked loop frequency synthesizer.
- 3. the check system of live capacitive apparatus on-Line Monitor Device as claimed in claim 1, it is characterised in that：The FM is adjusted Frequency receiver (3) includes FM receiving circuits (3-1), power frequency component extraction and conditioning module (3-2), programmed amplitude modulation phase modulation circuit (3-3), control circuit (3-4), central processing unit (3-5) and power amplifier module (3-6), the FM receiving circuits (3-1) are used to connect The stereo composite signal of FM modulated transmitting devices (2) transmission is received, is then output to power frequency component extraction and conditioning module (3-2) In, stereo composite signal is demodulated, extracted, amplify after export the power-frequency voltage signal of live capacitive apparatus (8), then Programmed amplitude modulation phase modulation circuit (3-3) is conveyed to, the central processing unit (3-5) is connected with human-computer interaction device (4), for receiving The reference current amplitude and phase parameter that human-computer interaction device (4) is set, by control circuit (3-4) to programmed amplitude modulation phase modulation electricity Road (3-3) carries out phase-modulation and amplitude-modulation, makes the Phase synchronization of reference current signal and power-frequency voltage signal, the power amplifier module (3-6) Electric current output lead (5) is output to after the reference current signal modulated is amplified.
- 4. the check system of live capacitive apparatus on-Line Monitor Device as claimed in claim 3, it is characterised in that：The power frequency Signal extraction includes modulate circuit (3-2a), bandpass filter (3-2b) and amplifying circuit (3-2c), institute with conditioning module (3-2) State the mixed frequency signal that modulate circuit (3-2a) is used to demodulate composite audio signal from stereo composite signal, the band logical filter Ripple device (3-2b) is used for the power-frequency voltage signal that live capacitive apparatus is extracted from mixed frequency signal, the amplifying circuit (3-2c) For being input to programmed amplitude modulation phase modulation circuit (3-3) after the power-frequency voltage signal is amplified.
- 5. the check system of live capacitive apparatus on-Line Monitor Device as claimed in claim 3, it is characterised in that：It is described program control Amplitude modulation and phase modulation circuit (3-3), is divided into amplitude modulation module and phase modulation module, and amplitude modulation module forms journey by amplifier and 14 bit digital potentiometers Amplifier is controlled, amplitude adjusts resolution ratio within 1 μ A, and phase modulation circuit forms constant amplitude by amplifier, 14 bit digital potentiometers and electric capacity Phase-shift circuit, within 0.01 degree, 14 bit digital potentiometers are controlled phase adjusted precision by central processing unit (3-5), real The amplitude modulation of existing reference signal and phase modulation.
- 6. the check system of live capacitive apparatus on-Line Monitor Device as claimed in claim 1, it is characterised in that：The electric current The parameter of signal includes total current, current in resistance property, capacity current, phase angle difference, dielectric loss and capacitance.
- 7. the check system of live capacitive apparatus on-Line Monitor Device as claimed in claim 1, it is characterised in that：The voltage Sampler is high-precision transformer.
- 8. a kind of method of calibration of live capacitive apparatus on-Line Monitor Device, it is characterised in that using any in claim 1-7 The item check system is carried out, and the described method comprises the following steps：Step 1：Selection needs verified live capacitive apparatus on-Line Monitor Device (7), and it is online to read the live capacitive apparatus The parameter for the current signal that monitoring device (7) is currently shown is as initial value；Step 2：The electric current output lead (5) that current output terminal with FM FM Receivers (3) is connected is located in and step Needed in one in the measurement sensor (6) that verified live capacitive apparatus on-Line Monitor Device (7) connects；Step 3：The operation reference voltage of live capacitive apparatus (8) is obtained by voltage sampling device (1), is referred to as operation Voltage signal inputs the voltage input end of FM modulated transmitting devices (2), and then the voltage signal through FM modulated transmitting devices (2) is adjusted After the operation reference voltage signal received is converted into composite audio signal by reason module (2-1), pass through FM modulated transmitting devices (2) FM radiating circuits (2-2) are wirelessly transmitted to FM FM Receivers (3)；Step 4：It is defeated by the wireless FM signal receiving ends of FM FM Receivers (3) by the composite audio signal in step 3 Enter in FM receiving circuits (3-1), be then output to by FM receiving circuits (3-1) in power frequency component extraction and conditioning module (3-2), Modulate circuit solution (3-2a) through power frequency component extraction and conditioning module (3-2) recalls the mixed frequency signal of composite audio signal, and The power-frequency voltage signal of live capacitive apparatus is therefrom extracted by bandpass filter (3-2b), the work that will finally extract Programmed amplitude modulation phase modulation circuit (3-3) is input to after the amplified circuit of frequency voltage signal (3-2c) amplification；Step 5：Program control phase modulation is carried out to the power-frequency voltage signal extracted in step 4 by programmed amplitude modulation phase modulation circuit (3-3) And amplitude modulation, export and run current signal of the reference voltage signal with phase as reference signal with PT, and pass through human-computer interaction device In setting is adjusted to the phase angle of the reference current signal and amplitude, the phase angle of reference current signal is joined with PT operations The phase value that voltage signal remains setting is examined, and amplitude is arranges value；Step 6：By the parameter of the current signal read in the parameter and step 1 of the reference current signal set in step 5 Computing is overlapped, calculates electric current, capacitance and dielectric loss theory increment size；Step 7：The reference current signal that phase angle and amplitude size are set in step 5 is put by power amplifier module (3-6) It is output to after big on the electric current output lead (5) being connected with the current output terminal of FM FM Receivers (3), then by being arranged The measurement sensor (6) being connected with live capacitive apparatus on-Line Monitor Device (7) on electric current output lead (5) is injected into existing In capacitive apparatus on-Line Monitor Device (7), and read now at the scene in capacitive apparatus on-Line Monitor Device (7) it is shown go out Current signal measured value of parameters, it is electric current, the electricity that the live capacitive apparatus on-Line Monitor Device (7) measures to subtract initial value Capacity and the actual increment size of dielectric loss；Step 8：By electric current of electric current, capacitance and the actual increment size of dielectric loss that step 7 obtains with step 6 acquisition, capacitance And dielectric loss theory increment size is contrasted, calculation error, verify whether the measurement of live capacitive apparatus on-Line Monitor Device is accurate.
- 9. method of calibration as claimed in claim 8, it is characterised in that：The step 8 verifies live capacitive apparatus on-line monitoring The measurement of device whether be specially accurately：When error amount is in allowed band, then judge on-Line Monitor Device to be qualified；Work as error Value exceedes allowed band, then judges on-Line Monitor Device to be unqualified.
- 10. method of calibration as claimed in claim 8, it is characterised in that：On-Line Monitor Device (7) is that capacitance type equipment is supervised online Survey device or capacitive on-line measuring device or arrester on-Line Monitor Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711137196.9A CN107797007B (en) | 2017-11-16 | 2017-11-16 | Verification system and verification method for on-site capacitive equipment on-line monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711137196.9A CN107797007B (en) | 2017-11-16 | 2017-11-16 | Verification system and verification method for on-site capacitive equipment on-line monitoring device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107797007A true CN107797007A (en) | 2018-03-13 |
| CN107797007B CN107797007B (en) | 2023-12-15 |
Family
ID=61535352
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711137196.9A Active CN107797007B (en) | 2017-11-16 | 2017-11-16 | Verification system and verification method for on-site capacitive equipment on-line monitoring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107797007B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110441722A (en) * | 2019-08-22 | 2019-11-12 | 华北电力科学研究院有限责任公司 | Dielectric loss tester method of calibration, apparatus and system |
| CN111693924A (en) * | 2020-06-08 | 2020-09-22 | 中国电力科学研究院有限公司 | System and method for detecting monitoring performance of voltage transformer metering performance on-line monitoring device |
| CN111856243A (en) * | 2020-06-24 | 2020-10-30 | 苏州浪潮智能科技有限公司 | Automatic current measurement precision testing system and method |
| CN114236271A (en) * | 2021-12-01 | 2022-03-25 | 国网山东省电力公司电力科学研究院 | On-site calibration method and system for transformer comprehensive detection device |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101299062A (en) * | 2008-07-01 | 2008-11-05 | 国网武汉高压研究院 | Method and device for checking zinc oxide lightning arrester block property current tester |
| CN201774693U (en) * | 2010-08-30 | 2011-03-23 | 美的集团有限公司 | Electromagnetic oven circuit capable of precisely measuring electrical parameters |
| CN103675745A (en) * | 2013-12-17 | 2014-03-26 | 国家电网公司 | Checking system of on-line monitoring device for zinc oxide arrester and capacitive equipment |
| CN203658483U (en) * | 2013-11-14 | 2014-06-18 | 北京木邦科技发展有限公司 | Portable capacitive equipment on-line detection device |
| CN105242228A (en) * | 2015-10-23 | 2016-01-13 | 国家电网公司 | Current blanking method and device of transformer iron core grounding current online monitoring equipment |
| CN205374572U (en) * | 2015-12-31 | 2016-07-06 | 保定华创电气有限公司 | Capacitive equipment earth current sampling device |
| CN105785300A (en) * | 2016-03-04 | 2016-07-20 | 福建和盛高科技产业有限公司 | Distributed capacitive equipment online monitoring and calibration device and field calibration method based on device |
| CN106443546A (en) * | 2016-10-19 | 2017-02-22 | 中国计量大学 | Wireless calibration method and system for capacitive equipment insulation performance online monitoring device |
| CN106443537A (en) * | 2016-04-26 | 2017-02-22 | 中国电力科学研究院 | Calibration method for online capacitive equipment insulation parameter monitoring device and calibration equipment |
| CN207557365U (en) * | 2017-11-16 | 2018-06-29 | 国家电网公司 | A kind of check system of scene capacitive apparatus on-Line Monitor Device |
-
2017
- 2017-11-16 CN CN201711137196.9A patent/CN107797007B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101299062A (en) * | 2008-07-01 | 2008-11-05 | 国网武汉高压研究院 | Method and device for checking zinc oxide lightning arrester block property current tester |
| CN201774693U (en) * | 2010-08-30 | 2011-03-23 | 美的集团有限公司 | Electromagnetic oven circuit capable of precisely measuring electrical parameters |
| CN203658483U (en) * | 2013-11-14 | 2014-06-18 | 北京木邦科技发展有限公司 | Portable capacitive equipment on-line detection device |
| CN103675745A (en) * | 2013-12-17 | 2014-03-26 | 国家电网公司 | Checking system of on-line monitoring device for zinc oxide arrester and capacitive equipment |
| CN105242228A (en) * | 2015-10-23 | 2016-01-13 | 国家电网公司 | Current blanking method and device of transformer iron core grounding current online monitoring equipment |
| CN205374572U (en) * | 2015-12-31 | 2016-07-06 | 保定华创电气有限公司 | Capacitive equipment earth current sampling device |
| CN105785300A (en) * | 2016-03-04 | 2016-07-20 | 福建和盛高科技产业有限公司 | Distributed capacitive equipment online monitoring and calibration device and field calibration method based on device |
| CN106443537A (en) * | 2016-04-26 | 2017-02-22 | 中国电力科学研究院 | Calibration method for online capacitive equipment insulation parameter monitoring device and calibration equipment |
| CN106443546A (en) * | 2016-10-19 | 2017-02-22 | 中国计量大学 | Wireless calibration method and system for capacitive equipment insulation performance online monitoring device |
| CN207557365U (en) * | 2017-11-16 | 2018-06-29 | 国家电网公司 | A kind of check system of scene capacitive apparatus on-Line Monitor Device |
Non-Patent Citations (4)
| Title |
|---|
| 周泽正 等: "容性设备在线监测装置现场校验系统的开发", vol. 24, no. 12, pages 45 - 48 * |
| 彭亚凯 等: "一种容性设备绝缘在线监测系统现场校验装置", 电工电气, no. 2, pages 53 - 54 * |
| 王赋 等: "一种容性设备在线监测装置全系统校验方法研究及校验系统开发", 电子器件, no. 06, pages 203 - 208 * |
| 贺家慧 等: "基于"置空后注入"的铁芯接地电流监测装置现场检验技术", vol. 39, no. 12, pages 40 - 44 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110441722A (en) * | 2019-08-22 | 2019-11-12 | 华北电力科学研究院有限责任公司 | Dielectric loss tester method of calibration, apparatus and system |
| CN110441722B (en) * | 2019-08-22 | 2022-06-10 | 华北电力科学研究院有限责任公司 | Method, device and system for checking dielectric loss tester |
| CN111693924A (en) * | 2020-06-08 | 2020-09-22 | 中国电力科学研究院有限公司 | System and method for detecting monitoring performance of voltage transformer metering performance on-line monitoring device |
| CN111693924B (en) * | 2020-06-08 | 2022-07-01 | 中国电力科学研究院有限公司 | System and method for detecting monitoring performance of voltage transformer on-line monitoring device |
| CN111856243A (en) * | 2020-06-24 | 2020-10-30 | 苏州浪潮智能科技有限公司 | Automatic current measurement precision testing system and method |
| CN111856243B (en) * | 2020-06-24 | 2022-11-18 | 苏州浪潮智能科技有限公司 | Automatic current measurement precision testing system and method |
| CN114236271A (en) * | 2021-12-01 | 2022-03-25 | 国网山东省电力公司电力科学研究院 | On-site calibration method and system for transformer comprehensive detection device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107797007B (en) | 2023-12-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107797007A (en) | A kind of check system and the method for inspection of live capacitive apparatus on-Line Monitor Device | |
| CN105223530B (en) | High-frequency partial discharge detector calibration system and calibration method thereof | |
| CN101762799B (en) | System for online detection of voltage transformer precision | |
| CN110504918B (en) | Arc detection device and arc detection method | |
| CN101726675B (en) | Method for performing live-line evaluation on online insulation monitoring system of substation | |
| CN102081136A (en) | Method for on-site GIS (Gas-insulated metal-enclosed switchgear) partial discharge detection under impulse voltage | |
| CN104215925A (en) | High-frequency sensor and sensitivity detecting device and method thereof | |
| CN104330677A (en) | Device and method for testing electronic type current transformer | |
| CN106093637B (en) | The removing method of dead zone defect between intelligent substation primary equipment and secondary device | |
| CN103983895B (en) | The online N line multipoint earth faults detection method of PT secondary circuit | |
| CN108181597A (en) | A kind of GIS ultrahigh frequency local discharge sensor field test method | |
| CN207557365U (en) | A kind of check system of scene capacitive apparatus on-Line Monitor Device | |
| CN101881804A (en) | Method and device for detecting composite insulator on line | |
| CN109307817B (en) | Cable live identification instrument and identification method | |
| CN105067960B (en) | A kind of Distribution Fault Location System and its method based on big data | |
| CN107884737A (en) | The live capacitive apparatus on-line monitoring check system and method for wireless high-precise synchronization | |
| CN105203886A (en) | Capacitive type current transformer online detection device and method | |
| CN207798953U (en) | A kind of test device of CVT capacitances dielectric loss and capacitance | |
| CN103941146B (en) | A kind of apparatus and method detecting and distinguish each Secondary Winding accuracy rating of 10kV current transformer that do not have a power failure | |
| CN103592502B (en) | MOA current in resistance property and CT capacity current combination monitoring system | |
| CN106707085B (en) | Secondary wiring verification device for switch cabinet | |
| CN206209028U (en) | A kind of test connection device of on-the-spot test lightning arrester leakance | |
| CN209606602U (en) | The detection device of generator voltage mutual inductor winding interturn short-circuit failure | |
| CN103869113A (en) | High-voltage series resonance device and voltage withstanding test method using same | |
| CN107290649A (en) | A kind of television board test device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20221102 Address after: 100031 No. 86 West Chang'an Avenue, Beijing, Xicheng District Applicant after: State Grid Corporation of China Applicant after: STATE GRID HUBEI ELECTRIC POWER Research Institute Applicant after: STATE GRID HBEPC MAINTENANCE BRANCH Applicant after: STATE GRID ZHEJIANG ELECTRIC POWER COMPANY LIMITED ELECTRIC POWER Research Institute Applicant after: WUHAN XINDIAN ELECTRICAL CO.,LTD. Address before: 100031 No. 86 West Chang'an Avenue, Beijing, Xicheng District Applicant before: State Grid Corporation of China Applicant before: STATE GRID HUBEI ELECTRIC POWER Research Institute Applicant before: STATE GRID HBEPC MAINTENANCE BRANCH Applicant before: WUHAN XINDIAN ELECTRICAL CO.,LTD. |
|
| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |