CN108519572A - A kind of assessment device and assessment method of transient earth voltage PD meter - Google Patents
A kind of assessment device and assessment method of transient earth voltage PD meter Download PDFInfo
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- CN108519572A CN108519572A CN201810454432.8A CN201810454432A CN108519572A CN 108519572 A CN108519572 A CN 108519572A CN 201810454432 A CN201810454432 A CN 201810454432A CN 108519572 A CN108519572 A CN 108519572A
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- 230000001052 transient effect Effects 0.000 title claims abstract description 197
- 238000000034 method Methods 0.000 title claims abstract description 19
- 239000002184 metal Substances 0.000 claims abstract description 70
- 229910052751 metal Inorganic materials 0.000 claims abstract description 70
- 238000012360 testing method Methods 0.000 claims abstract description 21
- 238000009413 insulation Methods 0.000 claims abstract description 20
- 239000000523 sample Substances 0.000 claims abstract description 13
- 238000004590 computer program Methods 0.000 claims description 47
- 230000035945 sensitivity Effects 0.000 claims description 26
- 239000000203 mixture Substances 0.000 claims description 10
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 9
- 239000010931 gold Substances 0.000 claims description 9
- 229910052737 gold Inorganic materials 0.000 claims description 9
- 210000001367 artery Anatomy 0.000 claims description 6
- 210000003462 vein Anatomy 0.000 claims description 6
- 238000012544 monitoring process Methods 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 abstract description 4
- 230000007547 defect Effects 0.000 abstract description 3
- 238000004364 calculation method Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
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- 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
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Abstract
The present invention relates to a kind of assessment devices and assessment method of transient earth voltage PD meter, belong to power equipment Partial Discharge Detecting Technology field.The device includes computer, programmable signal generator, coaxial output cable, high-performance oscillograph, metal cabinet, insulation board, transient earth voltage PD meter, transient earth voltage sensor, programmable signal generator is connect by coaxial output cable I with computer, the signal output end of programmable signal generator is connect by coaxial output cable II with metal cabinet side wall inner surfaces, the signal output end of programmable signal generator is connect by coaxial output cable III with high-performance oscillograph, metal cabinet is vertically arranged on insulation board, the probe of transient earth voltage sensor is arranged in metal cabinet side plate outer surface, transient earth voltage sensor is connect by coaxial output cable IV with transient earth voltage PD meter.The present invention can simulate the insulation defect of switchgear, and fast and convenient index test and appraisal are carried out to transient earth voltage PD meter.
Description
Technical field
The present invention relates to a kind of assessment devices and assessment method of transient earth voltage PD meter, belong to power equipment and locally put
Electro-detection technology field.
Background technology
Partial Discharge Detection is a kind of important means of Electric Power Equipment Insulation diagnosis, can effectively detect the morning of equipment
Phase failure provides foundation effectively to take preventive measures.
Detection method for local discharge has much at present, there is pulse current method, ultrasonic wave, TEV, superfrequency method etc..Each side
Method has the advantages that respective and deficiency, domestic and foreign manufacturers are produced a plurality of types of shelf depreciations according to different testing principles and examined
Survey instrument（Referred to as：PD meter）, have contact, non-contact ultrasonic PD meter, transient state voltage-to-ground PD meter, HFCT PD meters,
Superfrequency PD meter.The index of test and appraisal has frequency characteristic, the linearity, sensitivity of sensor etc..Transient earth voltage PD meter one
As be detected for inside switch cabinet transient earth voltage using special sensor, to judge the shelf depreciation of inside switch cabinet
Defect.
Although country's associate power industry has formulated relevant specification, phase to local discharge detection device calibration at present
The specification of pass does not specifically give transient earth voltage PD meter（TEV PD meters）Standardize, the device of unified test and appraisal and side
Method affects the regular test and appraisal of large quantities of PD meters, causes Instrumental results inaccuracy reliably, and on-the-spot test easily causes serious
Consequence.Therefore the research of the convenient assessment device of transient earth voltage and method is worth with practical guidance.
Invention content
In view of the problems of the existing technology the present invention, provides assessment device and the test and appraisal of a kind of transient earth voltage PD meter
Method, assessment device of the invention can be used for transient earth voltage PD meter（TEV PD meters）Daily test and appraisal and assessment.The present invention
The insulation defect that switchgear can be simulated according to the pulse signal that programmable signal generator generates, to transient earth voltage PD meter
Carry out fast and convenient index test and appraisal, and then estimation of transient ground voltage PD meter performance.
The present invention be solve its technical problem and the technical solution adopted is that：
A kind of assessment device of transient earth voltage PD meter, including computer, programmable signal generator, coaxial output cable,
High-performance oscillograph, metal cabinet, insulation board, transient earth voltage PD meter, transient earth voltage sensor.Programmable signal occurs
Device is connect by coaxial output cable I with computer, and the signal output end of programmable signal generator passes through coaxial output cable
II connect with metal cabinet side wall inner surfaces, and the signal output end of programmable signal generator passes through coaxial output cable III and height
Performance oscillograph connects, and metal cabinet is vertically arranged on insulation board, and the probe of transient earth voltage sensor is arranged in metal safe
Side plate outer surface, transient earth voltage sensor are connect by coaxial output cable IV with transient earth voltage PD meter；
The computer generates the preset calibration pulse signal for meeting power industry for controlling programmable signal generator；
The programmable signal generator, for generating the calibration pulse signal for meeting power industry, the arteries and veins of calibration pulse signal
Width is 5 ~ 50ns, and amplitude is 100mv ~ 10V；NI PXle-1071 may be used in programmable signal generator；
The high-performance oscillograph, the pulse signal for monitoring the output of programmable signal generator；
Further, the metal cabinet is the hollow cabinet being made of 4 pieces of identical rectangular metal plates, the height of rectangular metal plate
Degree is 2 ~ 3m, and width is 0.15 ~ 0.5m, and thickness is 2 ~ 5mm；
Further, the coaxial output cable II by bolt, screw or is welded and fixed setting table in metal cabinet side plate
Face.
The linearity of transient earth voltage PD meter is surveyed using the assessment device of transient earth voltage PD meter of the present invention
The method commented：
（1）It by the hollow metal cabinet of 4 pieces of identical rectangular metal plate compositions, is then placed on insulation board vertically, rectangle gold
The height for belonging to plate is 2 ~ 3m, and width is 0.15 ~ 0.5m, and thickness is 2 ~ 5mm；
（2）The probe of transient earth voltage sensor is arranged in the side plate outer surface of hollow metal cabinet, transient earth voltage sensing
Device is connect by coaxial output cable IV with transient earth voltage PD meter；The signal output end of programmable signal generator is passed through
Coaxial output cable II is connect with metal cabinet side wall inner surfaces, and the signal output end of programmable signal generator passes through coaxial defeated
Go out cable III to connect with high-performance oscillograph；
（3）Computer controls programmable signal generator by computer program and is sequentially generated a V voltages, from the initial frequency of 1MHz
Rate starts, with (1+niX) frequency of calibration pulse signal is altered in steps in the step-length of MHz, and wherein a is integer and 1≤a≤10, x
For integer and 2≤x≤6, niFor 1 to 24 integer and be niX ＜ 80；Transient earth voltage PD meter output signal is read respectively
Reading, finds out the corresponding frequency of the response peak i.e. resonant frequency of transient earth voltage PD meter；
（4）Under the resonant frequency of transient earth voltage PD meter, computer controls programmable signal by computer program
Device is sequentially generated the calibration pulse signal of 1V, 2V, 3V, 4 V, 5 V, 6 V, 7 V, 8 V, 9 V, 10 V, observes transient earth voltage
The reading A of PD meter output signaliDB draws out reading AiThe homologous thread of voltage observes AiThe homologous thread of voltage
Whether it is straight line with the linearity for transient earth voltage PD meter of testing and assessing.
The sensitivity of transient earth voltage PD meter is surveyed using the assessment device of transient earth voltage PD meter of the present invention
The method commented：
（1）It by the hollow metal cabinet of 4 pieces of identical rectangular metal plate compositions, is then placed on insulation board vertically, rectangle gold
The height for belonging to plate is 2 ~ 3m, and width is 0.15 ~ 0.5m, and thickness is 2 ~ 5mm；
（2）The probe of transient earth voltage sensor is arranged in the side plate outer surface of hollow metal cabinet, transient earth voltage sensing
Device is connect by coaxial output cable IV with transient earth voltage PD meter；The signal output end of programmable signal generator is passed through
Coaxial output cable II is connect with metal cabinet side wall inner surfaces, and the signal output end of programmable signal generator passes through coaxial defeated
Go out cable III to connect with high-performance oscillograph；
（3）Computer controls programmable signal generator by computer program and is sequentially generated a V voltages, from the initial frequency of 1MHz
Rate starts, with (1+niX) frequency of calibration pulse signal is altered in steps in the step-length of MHz, and wherein a is integer and 1≤a≤10, x
For integer and 2≤x≤6, niFor 1 to 24 integer and be niX ＜ 80；Transient earth voltage PD meter output signal is read respectively
Reading, finds out the corresponding frequency of the response peak i.e. resonant frequency of transient earth voltage PD meter；
（4）Under the resonant frequency of transient earth voltage PD meter, computer controls programmable signal by computer program
Device generates b1The calibration pulse signal of V, wherein b1For integer and 1≤b1≤ 3, observation transient earth voltage PD meter output signal
Read A b1dB；Computer controls programmable signal generator by computer program and generates calibration pulse signal, with making transient state
The reading of voltage PD meter output signal is (Ab1+ 1) dB records (Ab1+ 1) the corresponding voltage value c of dB1V, transient earth voltage
PD meter is in output voltage b1 The sensitivity of V is (c1-b1) V/dB；
（5）Under the resonant frequency of transient earth voltage PD meter, computer controls programmable signal by computer program
Device generates b2The calibration pulse signal of V, wherein b2For integer and 4≤b2≤ 6, observation transient earth voltage PD meter output signal
Read A b2dB；Computer controls programmable signal generator by computer program and generates calibration pulse signal, with making transient state
The reading of voltage PD meter output signal is (Ab2+ 1) dB records (Ab2+ 1) the corresponding voltage value c of dB2V, transient earth voltage
PD meter is in output voltage b2 The sensitivity of V is (c2-b2) V/dB；
（6）Under the resonant frequency of transient earth voltage PD meter, computer controls programmable signal by computer program
Device generates b3The calibration pulse signal of V, wherein b3For integer and 7≤b3≤ 10, observation transient earth voltage PD meter output signal
Read A b3dB；Computer controls programmable signal generator by computer program and generates calibration pulse signal, with making transient state
The reading of voltage PD meter output signal is (Ab3+ 1) dB records (Ab3+ 1) the corresponding voltage value c of dB3V, transient earth voltage
PD meter is in output voltage b3 The sensitivity of V is (c3-b3) V/dB；
（7）The sensitivity of transient earth voltage PD meter is [(c1-b1) +(c2-b2)+ (c3-b3)]/3 V/dB。
The pulse number of transient earth voltage PD meter is carried out using the assessment device of transient earth voltage PD meter of the present invention
The method of test and appraisal：
（1）It by the hollow metal cabinet of 4 pieces of identical rectangular metal plate compositions, is then placed on insulation board vertically, rectangle gold
The height for belonging to plate is 2 ~ 3m, and width is 0.15 ~ 0.5m, and thickness is 2 ~ 5mm；
（2）The probe of transient earth voltage sensor is arranged in the side plate outer surface of hollow metal cabinet, transient earth voltage sensing
Device is connect by coaxial output cable IV with transient earth voltage PD meter；The signal output end of programmable signal generator is passed through
Coaxial output cable II is connect with metal cabinet side wall inner surfaces, and the signal output end of programmable signal generator passes through coaxial defeated
Go out cable III to connect with high-performance oscillograph；
（3）Computer controls programmable signal generator by computer program and is sequentially generated a V voltages, pulsewidth 50ns wherein a
For integer and 1≤a≤10, it is 1kHz, 5 kHz, (5+d to be sequentially output frequencyiY) the calibration pulse signal of kHz, 70 kHz,
Middle y is integer and 5≤y≤10, diFor 1 to 12 integer and be diY ＜ 70；Transient earth voltage PD meter is adjusted to pulsimeter
Number function reads the actual pulse number that transient earth voltage PD meter corresponds to output frequency.
Beneficial effects of the present invention：
（1）The assessment device of the present invention can be used for transient earth voltage PD meter（TEV PD meters）It is frequency characteristic, the linearity, sensitive
The daily test and appraisal of the indexs such as degree, pulse number, stability and Instrument Evaluation；
（2）In the case that in face of extensive PD meter to be checked, the assessment device using the present invention helps quickly and easily to search
Whether the problem of going out instrument, quick decision need depot repair or inspection；Contribute to the PD meter of the current major power supply bureau of solution
It is long neglected and in disrepair, measuring accuracy be not allowed poor reliability the problem of, have preferable practical guidance value.
Description of the drawings
Fig. 1 is the structural schematic diagram of embodiment transient earth voltage PD meter assessment device；
Fig. 2 is the reading A of 1 transient earth voltage PD meter output signal of embodimentiThe homologous thread of voltage.
Specific implementation mode
With reference to embodiment, the invention will be further described.
Embodiment 1：As shown in Figure 1, a kind of assessment device of transient earth voltage PD meter, including computer, programmable letter
Number generator, coaxial output cable, high-performance oscillograph, metal cabinet, insulation board, transient earth voltage PD meter, transient state it is electric
Pressure sensor, programmable signal generator are connect by coaxial output cable I with computer, the signal of programmable signal generator
Output end is connect by coaxial output cable II with metal cabinet side wall inner surfaces, the signal output end of programmable signal generator
It is connect with high-performance oscillograph by coaxial output cable III, metal cabinet is vertically arranged on insulation board, and transient earth voltage passes
The probe setting of sensor is in metal cabinet side plate outer surface, and transient earth voltage sensor is by coaxial output cable IV and transient state
Voltage PD meter connects；
Computer described in the present embodiment generates the preset standard arteries and veins for meeting power industry for controlling programmable signal generator
Rush signal；
Programmable signal generator described in the present embodiment, for generating the calibration pulse signal for meeting power industry；
High-performance oscillograph described in the present embodiment, the pulse signal for monitoring the output of programmable signal generator；
Metal cabinet described in the present embodiment is the hollow cabinet being made of 4 pieces of identical rectangular metal plates, the height of rectangular metal plate
Degree is 2m, width 0.2m, thickness 3mm；
Coaxial output cable II described in the present embodiment is by bolt, screw or is welded and fixed setting table in metal cabinet side plate
Face.
The linearity, spirit are carried out to transient earth voltage PD meter using the assessment device of the present embodiment transient earth voltage PD meter
The assessment method of sensitivity and pulse number：
（1）It by the hollow metal cabinet of 4 pieces of identical rectangular metal plate compositions, is then placed on insulation board vertically, rectangle gold
The height for belonging to plate is 2m, width 0.2m, thickness 3mm；
（2）The probe of transient earth voltage sensor is arranged in the side plate outer surface of hollow metal cabinet, transient earth voltage sensing
Device is connect by coaxial output cable IV with transient earth voltage PD meter；The signal output end of programmable signal generator is passed through
Coaxial output cable II is connect with metal cabinet side wall inner surfaces, and the signal output end of programmable signal generator passes through coaxial defeated
Go out cable III to connect with high-performance oscillograph；
（3）Computer controls programmable signal generator by computer program and generates peak value 10V voltages, and frequency is sequentially output 3
MHz、7 MHz、11 MHz、15 MHz、19 MHz、23 MHz、27MHz、31 MHz、35MHz、39MHz、41MHz、45 MHz、
The calibration pulse of 49 MHz, 51MHz, 55 MHz, 59 MHz, 61 MHz, 65MHz, 69 MHz, 71MHz, 75 MHz, 79 MHz
Signal reads the corresponding reading of transient earth voltage PD meter respectively, and the response peak for finding out transient earth voltage PD meter corresponds to
Frequency be 35MHz, i.e., the resonant frequency of transient earth voltage PD meter be 35MHz；
（4）In the resonant frequency of transient earth voltage PD meter（35MHz）Under, computer controls programmable letter by computer program
Number generator is sequentially generated the calibration pulse signal of 1V, 2V, 3V, 4 V, 5 V, 6 V, 7 V, 8 V, 9 V, 10 V, observes transient state
The reading A of ground voltage PD meter output signaliDB draws out reading AiThe homologous thread of voltage（As shown in Figure 2）, this implementation
A in exampleiThe homologous thread of voltage is that the linearity of straight line then transient earth voltage PD meter is preferable, completes transient earth voltage office
Put the linearity test and appraisal of instrument；
（5）In the resonant frequency of transient earth voltage PD meter（35MHz）Under, computer controls programmable letter by computer program
Number generator generates the calibration pulse signal of 2 V, observes that the reading of transient earth voltage PD meter output signal is 25 dB；Meter
Calculation machine controls programmable signal generator by computer program and generates calibration pulse signal, and transient earth voltage PD meter is made to export
The reading of signal is 26dB, corresponding 2.3 V of voltage value of record 26dB, spirit of the transient earth voltage PD meter in output voltage 2V
Sensitivity is 0.3V/dB；
（6）In the resonant frequency of transient earth voltage PD meter（35MHz）Under, computer controls programmable letter by computer program
Number generator generates the calibration pulse signal of 5V, observes that the reading of transient earth voltage PD meter output signal is 31 dB；It calculates
Machine controls programmable signal generator by computer program and generates calibration pulse signal, makes transient earth voltage PD meter output letter
Number reading be 32 dB, the record corresponding voltage value 5.2V of 32 dB, transient earth voltage PD meter is sensitive output voltage 5V's
Degree is 0.2V/dB；
（7）In the resonant frequency of transient earth voltage PD meter（35MHz）Under, computer controls programmable letter by computer program
Number generator generates the calibration pulse signal of 8V, observes that the reading of transient earth voltage PD meter output signal is 35 dB；Adjustment
Computer program controls programmable signal generator and generates calibration pulse signal, makes the reading of transient earth voltage PD meter output signal
Number is 36 dB, and the corresponding voltage values of 36 dB of record are 9 V, and sensitivity of the transient earth voltage PD meter in output voltage 8V is
1V/dB；
（8）The sensitivity of the PD meter is that the mean value of three sections of sensitivity is 0.5 V/dB；
（9）Computer controls programmable signal generator by computer program and generates 10V voltages, and pulsewidth 50ns is sequentially output
Frequency is the standard arteries and veins of 1kHz, 5 kHz, 10 kHz, 20 kHz, 30 kHz, 40 kHz, 50 kHz, 60 kHz, 70 kHz
Signal is rushed,；Transient earth voltage PD meter is adjusted to pulse number tally function, transient earth voltage PD meter is read and corresponds to output
The pulse number of frequency is followed successively by 1000,4999,9999,19998,28673,40001,50000,57925,67712.
Embodiment 2：The test and appraisal of the assessment device and 1 transient earth voltage PD meter of embodiment of the present embodiment transient earth voltage PD meter
The structure of device is essentially identical, the difference is that：Metal cabinet described in the present embodiment is by 4 pieces of identical rectangular metal board groups
At hollow cabinet, the height of rectangular metal plate is 2.5m, width 0.3m, thickness 4mm；
The linearity, sensitivity are carried out to transient earth voltage PD meter using the assessment device of the present embodiment transient earth voltage PD meter
With the assessment method of pulse number：
（1）It by the hollow metal cabinet of 4 pieces of identical rectangular metal plate compositions, is then placed on insulation board vertically, rectangle gold
The height for belonging to plate is 2.5m, width 0.3m, thickness 4mm；
（2）The probe of transient earth voltage sensor is arranged in the side plate outer surface of hollow metal cabinet, transient earth voltage sensing
Device is connect by coaxial output cable IV with transient earth voltage PD meter；The signal output end of programmable signal generator is passed through
Coaxial output cable II is connect with metal cabinet side wall inner surfaces, and the signal output end of programmable signal generator passes through coaxial defeated
Go out cable III to connect with high-performance oscillograph；
（3）Computer controls programmable signal generator by computer program and generates peak value 6V voltages, and frequency is sequentially output
4MHz、7MHz、10 MHz、16 MHz、22 MHz、25 MHz、28 MHz、34 MHz、40 MHz、46 MHz、52 MHz、58
It is corresponding to read transient earth voltage PD meter respectively for the calibration pulse signal of MHz, 64 MHz, 70 MHz, 77 MHz, 80 MHz
Reading, the corresponding frequency of response peak for finding out transient earth voltage sensor is 28MHz, i.e., transient earth voltage PD meter is humorous
Vibration frequency is 28 MHz；
（4）In the resonant frequency of transient earth voltage PD meter（28 MHz）Under, computer is controlled programmable by computer program
Signal generator is sequentially generated the calibration pulse signal of 1V, 2V, 3V, 4 V, 5 V, 6 V, 7 V, 8 V, 9 V, 10 V, and observation is temporary
The reading A of state ground voltage PD meter output signaliDB draws out reading AiThe homologous thread of voltage, A in the present embodimentiElectricity
The homologous thread of pressure is that the linearity of straight line then transient earth voltage PD meter is preferable, completes the linear of transient earth voltage PD meter
Degree test and appraisal；
（5）In the resonant frequency of transient earth voltage PD meter（28 MHz）Under, computer is controlled programmable by computer program
Signal generator generates the calibration pulse signal of 1 V, observes that the reading of transient earth voltage PD meter output signal is 26 dB；
Computer controls programmable signal generator by computer program and generates calibration pulse signal, keeps transient earth voltage PD meter defeated
The reading for going out signal is 27 dB, and corresponding 1.3 V of voltage value of 27 dB of record, transient earth voltage PD meter is in output voltage
The sensitivity of 1V is 0.3 V/dB；
（6）In the resonant frequency of transient earth voltage PD meter（28MHz）Under, computer controls programmable letter by computer program
Number generator generates the calibration pulse signal of 6V, observes that the reading of transient earth voltage PD meter output signal is 36 dB；Meter
Calculation machine controls programmable signal generator by computer program and generates calibration pulse signal, and transient earth voltage PD meter is made to export
The reading of signal is 37dB, the corresponding voltage value 6.4V of 37 dB of record, spirit of the transient earth voltage PD meter in output voltage 6V
Sensitivity is 0.4 V/dB；
（7）In the resonant frequency of transient earth voltage PD meter（40 MHz）Under, computer is controlled programmable by computer program
Signal generator generates the calibration pulse signal of 9V, observes that the reading of transient earth voltage PD meter output signal is 39 dB；
It adjusts computer program control programmable signal generator and generates calibration pulse signal, make transient earth voltage PD meter output signal
Reading be 40 dB, the corresponding voltage values of 40 dB of record are 10 V, spirit of the transient earth voltage PD meter in output voltage 9V
Sensitivity is 1 V/dB；
（8）The sensitivity of the PD meter is that the mean value of three sections of sensitivity is 0.6V/dB；
（9）Computer controls programmable signal generator by computer program and generates 10V voltages, and pulsewidth 50ns is sequentially output
Frequency is the standard arteries and veins of 1kHz, 5 kHz, 10 kHz, 20 kHz, 30 kHz, 40 kHz, 50 kHz, 60 kHz, 70 kHz
Rush signal；Transient earth voltage PD meter is adjusted to pulse number tally function, transient earth voltage PD meter is read and corresponds to output
The pulse number of frequency is followed successively by 2012,10040,20080,40152,56836,64000,64000,64000, has reached at this time
The threshold value of the transient earth voltage PD meter pulse number.
Embodiment 3：The test and appraisal of the assessment device and 1 transient earth voltage PD meter of embodiment of the present embodiment transient earth voltage PD meter
The structure of device is essentially identical, the difference is that：Metal cabinet described in the present embodiment is by 4 pieces of identical rectangular metal board groups
At hollow cabinet, the height of rectangular metal plate is 3m, width 0.4m, thickness 5mm；
Assessment method is carried out to transient earth voltage PD meter using the assessment device of the present embodiment transient earth voltage PD meter：
（1）It by the hollow metal cabinet of 4 pieces of identical rectangular metal plate compositions, is then placed on insulation board vertically, rectangle gold
The height for belonging to plate is 3m, width 0.4m, thickness 5mm；
（2）The probe of transient earth voltage sensor is arranged in the side plate outer surface of hollow metal cabinet, transient earth voltage sensing
Device is connect by coaxial output cable IV with transient earth voltage PD meter；The signal output end of programmable signal generator is passed through
Coaxial output cable II is connect with metal cabinet side wall inner surfaces, and the signal output end of programmable signal generator passes through coaxial defeated
Go out cable III to connect with high-performance oscillograph；
（3）Computer controls programmable signal generator by computer program and generates peak value 8V voltages, and frequency is sequentially output
1MHz、3 MHz、5 MHz、10 MHz、15 MHz、20 MHz、25 MHz、30 MHz、35 MHz、40 MHz、45 MHz、50
The calibration pulse signal of MHz, 55 MHz, 60 MHz, 65 MHz, 70 MHz, 75 MHz, 80 MHz, it is with reading transient state respectively electric
The corresponding reading of PD meter is pressed, the corresponding frequency of response peak for finding out transient earth voltage sensor is 70MHz, i.e. transient state
The resonant frequency of voltage PD meter is 70 MHz；
（4）In the resonant frequency of transient earth voltage PD meter（70 MHz）Under, computer is controlled programmable by computer program
Signal generator is sequentially generated the calibration pulse signal of 1V, 2V, 3V, 4 V, 5 V, 6 V, 7 V, 8 V, 9 V, 10 V, and observation is temporary
The reading A of state ground voltage PD meter output signaliDB draws out reading AiThe homologous thread of voltage, A in the present embodimentiElectricity
The homologous thread of pressure is that the linearity of curve then transient earth voltage PD meter is not so good, completes the line of transient earth voltage PD meter
Property degree test and appraisal；
（5）In the resonant frequency of transient earth voltage PD meter（70MHz）Under, computer controls programmable letter by computer program
Number generator generates the calibration pulse signal of 3 V, observes that the reading of transient earth voltage PD meter output signal is 35 dB；Meter
Calculation machine controls programmable signal generator by computer program and generates calibration pulse signal, and transient earth voltage PD meter is made to export
The reading of signal is 36dB, the corresponding voltage value 3.3V of 36 dB of record, spirit of the transient earth voltage PD meter in output voltage 3V
Sensitivity is 0.3 V/dB；
（6）In the resonant frequency of transient earth voltage PD meter（70MHz）Under, computer controls programmable letter by computer program
Number generator generates the calibration pulse signal of 5V, observes that the reading of transient earth voltage PD meter output signal is 39 dB；Meter
Calculation machine controls programmable signal generator by computer program and generates calibration pulse signal, and transient earth voltage PD meter is made to export
The reading of signal is 40 dB, corresponding 6 V of voltage value of record 40dB, spirit of the transient earth voltage PD meter in output voltage 5V
Sensitivity is 1 V/dB；
（7）In the resonant frequency of transient earth voltage PD meter（70 MHz）Under, computer is controlled programmable by computer program
Signal generator generates the calibration pulse signal of 9V, observes that the reading of transient earth voltage PD meter output signal is 45 dB；It adjusts
Whole computer program control programmable signal generator generates calibration pulse signal, makes transient earth voltage PD meter output signal
Reading is 45 dB, and the corresponding voltage values of 45 dB of record are 10 V, and transient earth voltage PD meter is sensitive output voltage 9V's
Degree is 1 V/dB；
（8）The sensitivity of the PD meter is that the mean value of three sections of sensitivity is 0.8V/dB；
（9）Computer controls programmable signal generator by computer program and generates 10V voltages, and pulsewidth 50ns is sequentially output
Frequency is the standard arteries and veins of 1kHz, 5 kHz, 10 kHz, 20 kHz, 30 kHz, 40 kHz, 50 kHz, 60 kHz, 70 kHz
Rush signal；Transient earth voltage PD meter is adjusted to pulse number tally function, transient earth voltage PD meter is read and corresponds to output
The pulse number of frequency is followed successively by 999,4996,9994,19989,28673,40001,49822,53914,49082.
Specific embodiments of the present invention are explained in detail above in conjunction with attached drawing, but the present invention is not limited to above-mentioned realities
Example is applied, it within the knowledge of a person skilled in the art, can also be without departing from the purpose of the present invention
Various changes can be made.
Claims (6)
1. a kind of assessment device of transient earth voltage PD meter, it is characterised in that：Including computer, programmable signal generator,
Coaxial output cable, high-performance oscillograph, metal cabinet, insulation board, transient earth voltage PD meter, transient earth voltage sensor；
Programmable signal generator is connect by coaxial output cable I with computer, the signal output of programmable signal generator
End is connect by coaxial output cable II with metal cabinet side wall inner surfaces, and the signal output end of programmable signal generator passes through
Coaxial output cable III is connect with high-performance oscillograph, and metal cabinet is vertically arranged on insulation board, transient earth voltage sensor
Probe be arranged in metal cabinet side plate outer surface, transient earth voltage sensor passes through coaxial output cable IV and transient earth voltage
PD meter connects；
The computer generates the preset calibration pulse signal for meeting power industry for controlling programmable signal generator；
The programmable signal generator, for generating the calibration pulse signal for meeting power industry, the arteries and veins of calibration pulse signal
Width is 5 ~ 50ns, and amplitude is 100mv ~ 10V；
The high-performance oscillograph, the pulse signal for monitoring the output of programmable signal generator.
2. the assessment device of transient earth voltage PD meter according to claim 1, it is characterised in that：Metal cabinet is by 4 pieces
The height of the hollow cabinet of identical rectangular metal plate composition, rectangular metal plate is 2 ~ 3m, and width is 0.15 ~ 0.5m, thickness 2
~5mm。
3. the assessment device of transient earth voltage PD meter according to claim 1, it is characterised in that：Coaxial output cable II is logical
It crosses bolt, screw or is welded and fixed and be arranged in metal cabinet side wall inner surfaces.
4. a kind of assessment device using transient earth voltage PD meter tests and assesses to the linearity of transient earth voltage PD meter
Method：
（1）It by the hollow metal cabinet of 4 pieces of identical rectangular metal plate compositions, is then placed on insulation board vertically, rectangle gold
The height for belonging to plate is 2 ~ 3m, and width is 0.15 ~ 0.5m, and thickness is 2 ~ 5mm；
（2）The probe of transient earth voltage sensor is arranged in the side plate outer surface of hollow metal cabinet, transient earth voltage sensing
Device is connect by coaxial output cable IV with transient earth voltage PD meter；The signal output end of programmable signal generator is passed through
Coaxial output cable II is connect with metal cabinet side wall inner surfaces, and the signal output end of programmable signal generator passes through coaxial defeated
Go out cable III to connect with high-performance oscillograph；
（3）Computer controls programmable signal generator by computer program and is sequentially generated a V voltages, from the initial frequency of 1MHz
Rate starts, with (1+niX) frequency of calibration pulse signal is altered in steps in the step-length of MHz, and wherein a is integer and 1≤a≤10, x
For integer and 2≤x≤6, niFor 1 to 24 integer and be niX ＜ 80；Transient earth voltage PD meter output signal is read respectively
Reading, finds out the corresponding frequency of the response peak i.e. resonant frequency of transient earth voltage PD meter；
（4）Under the resonant frequency of transient earth voltage PD meter, computer controls programmable signal by computer program
Device is sequentially generated the calibration pulse signal of 1V, 2V, 3V, 4 V, 5 V, 6 V, 7 V, 8 V, 9 V, 10 V, observes transient earth voltage
The reading A of PD meter output signaliDB draws out reading AiThe homologous thread of voltage observes AiThe homologous thread of voltage
Whether it is straight line with the linearity index for transient earth voltage PD meter of testing and assessing.
5. a kind of assessment device using transient earth voltage PD meter tests and assesses to the sensitivity of transient earth voltage PD meter
Method：
（1）It by the hollow metal cabinet of 4 pieces of identical rectangular metal plate compositions, is then placed on insulation board vertically, rectangle gold
The height for belonging to plate is 2 ~ 3m, and width is 0.15 ~ 0.5m, and thickness is 2 ~ 5mm；
（2）The probe of transient earth voltage sensor is arranged in the side plate outer surface of hollow metal cabinet, transient earth voltage sensing
Device is connect by coaxial output cable IV with transient earth voltage PD meter；The signal output end of programmable signal generator is passed through
Coaxial output cable II is connect with metal cabinet side wall inner surfaces, and the signal output end of programmable signal generator passes through coaxial defeated
Go out cable III to connect with high-performance oscillograph；
（3）Computer controls programmable signal generator by computer program and is sequentially generated a V voltages, from the initial frequency of 1MHz
Rate starts, with (1+niX) frequency of calibration pulse signal is altered in steps in the step-length of MHz, and wherein a is integer and 1≤a≤10, x
For integer and 2≤x≤6, niFor 1 to 24 integer and be niX ＜ 80；Transient earth voltage PD meter output signal is read respectively
Reading, finds out the corresponding frequency of the response peak i.e. resonant frequency of transient earth voltage PD meter；
（4）Under the resonant frequency of transient earth voltage PD meter, computer controls programmable signal by computer program
Device generates b1The calibration pulse signal of V, wherein b1For integer and 1≤b1≤ 3, observation transient earth voltage PD meter output signal
Read A b1dB；Computer controls programmable signal generator by computer program and generates calibration pulse signal, with making transient state
The reading of voltage PD meter output signal is (Ab1+ 1) dB records (Ab1+ 1) the corresponding voltage value c of dB1V, transient earth voltage
PD meter is in output voltage b1 The sensitivity of V is (c1-b1) V/dB；
（5）Under the resonant frequency of transient earth voltage PD meter, computer controls programmable signal by computer program
Device generates b2The calibration pulse signal of V, wherein b2For integer and 4≤b2≤ 6, observation transient earth voltage PD meter output signal
Read A b2dB；Computer controls programmable signal generator by computer program and generates calibration pulse signal, with making transient state
The reading of voltage PD meter output signal is (Ab2+ 1) dB records (Ab2+ 1) the corresponding voltage value c of dB2V, transient earth voltage
PD meter is in output voltage b2 The sensitivity of V is (c2-b2) V/dB；
（6）Under the resonant frequency of transient earth voltage PD meter, computer controls programmable signal by computer program
Device generates b3The calibration pulse signal of V, wherein b3For integer and 7≤b3≤ 10, observation transient earth voltage PD meter output signal
Read A b3dB；Computer controls programmable signal generator by computer program and generates calibration pulse signal, with making transient state
The reading of voltage PD meter output signal is (Ab3+ 1) dB records (Ab3+ 1) the corresponding voltage value c of dB3V, transient earth voltage
PD meter is in output voltage b3 The sensitivity of V is (c3-b3) V/dB；
（7）The sensitivity of transient earth voltage PD meter is [(c1-b1) +(c2-b2)+ (c3-b3)]/3 V/dB。
6. a kind of assessment device using transient earth voltage PD meter tests and assesses to the pulse number of transient earth voltage PD meter
Method：
（1）It by the hollow metal cabinet of 4 pieces of identical rectangular metal plate compositions, is then placed on insulation board vertically, rectangle gold
The height for belonging to plate is 2 ~ 3m, and width is 0.15 ~ 0.5m, and thickness is 2 ~ 5mm；
（2）The probe of transient earth voltage sensor is arranged in the side plate outer surface of hollow metal cabinet, transient earth voltage sensing
Device is connect by coaxial output cable IV with transient earth voltage PD meter；The signal output end of programmable signal generator is passed through
Coaxial output cable II is connect with metal cabinet side wall inner surfaces, and the signal output end of programmable signal generator passes through coaxial defeated
Go out cable III to connect with high-performance oscillograph；
（3）Computer controls programmable signal generator by computer program and is sequentially generated a V voltages, and wherein a is integer and 1
≤ a≤10, pulsewidth 50ns, it is 1kHz, 5 kHz, (5+d to be sequentially output frequencyiY) the calibration pulse signal of kHz, 70 kHz,
Wherein y is integer and 5≤y≤10, diFor 1 to 12 integer and be diY ＜ 70；Transient earth voltage PD meter is adjusted to pulse
Tally function reads the actual pulse number that transient earth voltage PD meter corresponds to output frequency, to evaluate PD meter pulse number
Index.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109406958A (en) * | 2018-09-12 | 2019-03-01 | 昆明理工大学 | A kind of assessment device and assessment method of the sensitivity of ultrasonic partial discharge instrument |
| CN109406959A (en) * | 2018-09-12 | 2019-03-01 | 昆明理工大学 | A kind of assessment device and assessment method of ultrasonic partial discharge instrument frequency characteristic |
| CN109407026A (en) * | 2018-11-15 | 2019-03-01 | 昆明理工大学 | A kind of assessment device and method of superfrequency PD meter |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104360301A (en) * | 2014-12-12 | 2015-02-18 | 国家电网公司 | Method for calibrating local discharge detection device employing transient voltage method |
| CN105223531A (en) * | 2015-10-20 | 2016-01-06 | 国家电网公司 | Transient earth voltage Partial discharge detector verification system and calibration method thereof |
| CN105911499A (en) * | 2016-06-30 | 2016-08-31 | 国网重庆市电力公司电力科学研究院 | Ultrasonically local discharging metering system under onsite environment and method |
| CN106226660A (en) * | 2016-06-29 | 2016-12-14 | 中国电力科学研究院 | The metering device of contact ultrasonic Partial discharge detector |
| CN106291429A (en) * | 2016-08-31 | 2017-01-04 | 国网北京市电力公司 | The detecting system of shelf depreciation instrument sensitivity |
| CN106443538A (en) * | 2016-06-30 | 2017-02-22 | 杭州西湖电子研究所 | Application of megahertz ultrasonic transducer in ultrasonic partial discharge tester verification field |
| CN208367193U (en) * | 2018-05-14 | 2019-01-11 | 昆明理工大学 | A kind of assessment device of transient earth voltage PD meter |
| CN208537705U (en) * | 2018-05-14 | 2019-02-22 | 昆明理工大学 | A kind of assessment device of transient earth voltage PD meter positioning function |
-
2018
- 2018-05-14 CN CN201810454432.8A patent/CN108519572B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104360301A (en) * | 2014-12-12 | 2015-02-18 | 国家电网公司 | Method for calibrating local discharge detection device employing transient voltage method |
| CN105223531A (en) * | 2015-10-20 | 2016-01-06 | 国家电网公司 | Transient earth voltage Partial discharge detector verification system and calibration method thereof |
| CN106226660A (en) * | 2016-06-29 | 2016-12-14 | 中国电力科学研究院 | The metering device of contact ultrasonic Partial discharge detector |
| CN105911499A (en) * | 2016-06-30 | 2016-08-31 | 国网重庆市电力公司电力科学研究院 | Ultrasonically local discharging metering system under onsite environment and method |
| CN106443538A (en) * | 2016-06-30 | 2017-02-22 | 杭州西湖电子研究所 | Application of megahertz ultrasonic transducer in ultrasonic partial discharge tester verification field |
| CN106291429A (en) * | 2016-08-31 | 2017-01-04 | 国网北京市电力公司 | The detecting system of shelf depreciation instrument sensitivity |
| CN208367193U (en) * | 2018-05-14 | 2019-01-11 | 昆明理工大学 | A kind of assessment device of transient earth voltage PD meter |
| CN208537705U (en) * | 2018-05-14 | 2019-02-22 | 昆明理工大学 | A kind of assessment device of transient earth voltage PD meter positioning function |
Non-Patent Citations (1)
| Title |
|---|
| 叶会生，等: "超声波和暂态地电位局放检测仪性能测试试验研究" * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109406958A (en) * | 2018-09-12 | 2019-03-01 | 昆明理工大学 | A kind of assessment device and assessment method of the sensitivity of ultrasonic partial discharge instrument |
| CN109406959A (en) * | 2018-09-12 | 2019-03-01 | 昆明理工大学 | A kind of assessment device and assessment method of ultrasonic partial discharge instrument frequency characteristic |
| CN109407026A (en) * | 2018-11-15 | 2019-03-01 | 昆明理工大学 | A kind of assessment device and method of superfrequency PD meter |
| CN109407026B (en) * | 2018-11-15 | 2024-03-19 | 昆明理工大学 | Evaluation device and method for ultrahigh frequency partial discharge instrument |
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|---|---|
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