CN206362888U - A kind of Auto-Test System of HV cable accessories partial discharge inception voltage - Google Patents
A kind of Auto-Test System of HV cable accessories partial discharge inception voltage Download PDFInfo
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- CN206362888U CN206362888U CN201720010408.6U CN201720010408U CN206362888U CN 206362888 U CN206362888 U CN 206362888U CN 201720010408 U CN201720010408 U CN 201720010408U CN 206362888 U CN206362888 U CN 206362888U
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Abstract
The utility model is including industrial computer, AC power, increasing apparatus, high-frequency signal sensor and the high speed data acquisition system being sequentially connected on a kind of Auto-Test System of HV cable accessories partial discharge inception voltage.One end of industrial computer is connected by serial data bus with AC power, AC power is connected by primary cable with increasing apparatus, increasing apparatus is connected by the cable core of high-voltage conducting wires and high-tension cable, high-frequency signal sensor is annular and is enclosed on the earth cable of HV cable accessories, high-frequency signal sensor is connected by signal-transmitting cable with high speed data acquisition system, and high speed data acquisition system is connected by high speed data bus with industrial computer.The utility model is boosted using industrial computer control AC power, and control the shelf depreciation process of high speed data acquisition system collection HV cable accessories, local discharge signal intensity and test voltage amplitude synchronously can be intuitively shown, automaticity is high, and test result is more accurate.
Description
Technical field
The utility model is related to HV cable accessories detection technique field, more particularly to a kind of HV cable accessories are locally put
The Auto-Test System of electrical initiation voltage.
Background technology
High-tension cable and its annex are widely used to network system, and its dielectric level also receives much concern.In order to judge height
Whether the insulating properties of piezoelectricity cable fittings are good, and more widespread practice is at present, detected by the way of online or offline
The local discharging level of HV cable accessories, its insulating properties is judged by the local discharging level of HV cable accessories whether
Well.
In the prior art, HV cable accessories are typically all installed in high-tension cable, i.e., HV cable accessories are serially connected with height
In voltage cable, and HV cable accessories are respectively connected with earth cable.At present, the test to HV cable accessories shelf depreciation is main
The shelf depreciation display device such as frequency spectrograph or digital oscilloscope is coordinated using pressure regulator, electricity is originated by direct surveillance's shelf depreciation
Pressure.Specifically, pressure regulator is adjusted manually by testing crew slowly to raise test voltage, by shelf depreciation display device come
See whether occur shelf depreciation, when eye-observation to the test voltage that the shelf depreciation moment is recorded when occurring shelf depreciation.
Also by observation PRPD, (Phase Resolved Partial Discharge, phase-resolved part is put in the prior art
Electricity) mode such as spectrogram, discharge capacity (pC values or dB values) or waveform spectrogram judges Partial Discharge Detection result, mainly passes through survey
Amount unit is nursed one's health and gathered to sensor signal, then is sent to industrial computer by usb communication mode, then by soft
Part carries out the extraction of the various features amount of discharge spectrum to local discharge signal, and with the Typical Joints constructional deficiency that has prepared
The shelf depreciation spectrogram caused is contrasted, so that judge whether the cable connector of scene operation is defective, the insulation to cable
Situation is monitored.
But, due to shelf depreciation generation often have instantaneity, human eye can not accurate observation arrive shelf depreciation
Initial generating state, meanwhile, testing crew adjusts pressure regulator manually, and the rate of rise is difficult to control, subject HV cable accessories
PDIV (Partial Discharge Inception Voltage, partial discharge inception voltage) test result accuracys and have
Effect property is poor, so as to influence the judgement to HV cable accessories insulating properties.By observe PRPD spectrograms, discharge capacity (pC values or
DB values), the mode such as waveform spectrogram judge the mode of Partial Discharge Detection result, have ignored the sign ginseng of shelf depreciation most critical
Number：Partial discharge inception voltage PDIV, it is impossible to from the insulating properties of PDIV angle analysis HV cable accessories.So, especially
Need a kind of device for being capable of accurate testing high voltage cable accessory partial discharge inception voltage.
Utility model content
To overcome problem present in correlation technique, the utility model provides a kind of HV cable accessories shelf depreciation starting
The Auto-Test System of voltage.
A kind of Auto-Test System of HV cable accessories partial discharge inception voltage, applied to HV cable accessories, institute
State HV cable accessories to be connected in high-tension cable, contain in the high-tension cable and connected in cable core, the HV cable accessories
There is earth cable, it is characterised in that the Auto-Test System includes：Industrial computer, AC power, the boosting dress being sequentially connected
Put, high-frequency signal sensor and high speed data acquisition system.
The industrial computer is connected by serial data bus with the AC power, and the AC power passes through primary cable
It is connected with the increasing apparatus, the increasing apparatus is connected by the cable core of high-voltage conducting wires and high-tension cable, the high-frequency signal
Sensor is annular and is enclosed on the earth cable of HV cable accessories, and the high-frequency signal sensor passes through signal-transmitting cable
It is connected with the high speed data acquisition system, the high speed data acquisition system is connected by high speed data bus with the industrial computer.
Preferably, the industrial computer includes processor, memory, display and keyboard.
Preferably, the AC power is programmable AC power supply.
Preferably, the high speed data acquisition system is digital oscilloscope.
The technical scheme that embodiment of the present utility model is provided can include the following benefits：
Auto-Test System in the utility model includes industrial computer, AC power, increasing apparatus, the high frequency being sequentially connected
Signal transducer and high speed data acquisition system.One end of the industrial computer is connected by serial data bus and the AC power
Connect, the AC power is connected by primary cable with the increasing apparatus, the increasing apparatus passes through high-voltage conducting wires and high pressure
The cable core connection of cable, the high-frequency signal sensor is annular and is enclosed on the earth cable of HV cable accessories, the height
Frequency signal transducer is connected by signal-transmitting cable with the high speed data acquisition system, and the high speed data acquisition system passes through height
Speed data bus is connected with the industrial computer.Industrial computer is to AC power by automatically controlling in the Auto-Test System,
The boost operations of high-tension cable are realized using increasing apparatus, meanwhile, the coupling of high-frequency signal sensors use electromagnetic principle of induction is adopted
Collect the local discharge signal of HV cable accessories, and this local discharge signal is sent to high-speed data by signal-transmitting cable
Collector, high speed data acquisition system is transmitted this local discharge signal to industrial computer by high speed data bus, passes through industrial computer
Display synchronously can intuitively show local discharge signal intensity and test voltage amplitude, the Auto-Test System automaticity
Height, test result is more accurate.
It should be appreciated that the general description of the above and detailed description hereinafter are only exemplary and explanatory, not
The utility model can be limited.
Brief description of the drawings
Accompanying drawing herein is merged in specification and constitutes the part of this specification, shows and meets of the present utility model
Embodiment, and for explaining principle of the present utility model together with specification.
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the accompanying drawing used required in description of the prior art is briefly described, it should be apparent that, for ordinary skill people
For member, without having to pay creative labor, other accompanying drawings can also be obtained according to these accompanying drawings.
A kind of structural representation for HV cable accessories PDIV Auto-Test Systems that Fig. 1 provides for the utility model embodiment
Figure；
A kind of workflow for HV cable accessories PDIV Auto-Test Systems that Fig. 2 provides for the utility model embodiment
Figure.
Symbol is represented：
1- high-tension cables, 2- HV cable accessories, 3- cable cores, 4- high-frequency signals sensor, 5- earth cables, 6- signals are passed
Transmission cable, 7- high speed data acquisition systems, 8- high speed data bus, 9- industrial computers, 10- serial data bus, 11- AC powers,
12- increasing apparatus, 13- primary cables, 14- high-voltage conducting wires.
Embodiment
Here exemplary embodiment will be illustrated in detail, its example is illustrated in the accompanying drawings.Following description is related to
During accompanying drawing, unless otherwise indicated, the same numbers in different accompanying drawings represent same or analogous key element.Following exemplary embodiment
Described in embodiment do not represent all embodiments consistent with the utility model.On the contrary, they be only with such as
The example of the consistent apparatus and method of some aspects being described in detail in appended claims, of the present utility model.
Referring to Fig. 1, a kind of HV cable accessories PDIV Auto-Test Systems that Fig. 1 provides for the utility model embodiment
Structural representation.The utility model embodiment medium and high voltage cable annex PDIV Auto-Test Systems mainly include：Industrial computer 9, friendship
Power supply 11, increasing apparatus 12,7 five parts of high-frequency signal sensor 4 and high speed data acquisition system are flowed, five parts are sequentially connected
Form closed-loop path.Industrial computer 9 is connected by serial data bus 10 with AC power 11, and AC power 11 passes through primary cable
13 are connected with increasing apparatus 12, and increasing apparatus 12 is connected by high-voltage conducting wires 14 with the cable core 3 of high-tension cable 1, and high-frequency signal is passed
Sensor 4 is annular and is enclosed on the earth cable 5 of HV cable accessories 2, and high-frequency signal sensor 4 passes through signal-transmitting cable 6
It is connected with high speed data acquisition system 7, high speed data acquisition system 7 is connected by high speed data bus 8 with industrial computer 9.
Wherein, industrial computer 9 includes processor, memory, display and keyboard, and keyboard is used to input control command, handled
Device can according to control command realize to AC power 11 automatically control and judge whether occur partial discharge phenomenon, storage
Device is recorded to partial discharge phenomenon, is carried out local discharge signal intensity and test voltage amplitude eventually through display defeated
Go out.
AC power 11 selects programmable AC power supply, and programmable AC power supply is high-precision intelligent power source, can be accurate
Rate of pressure rise and accurate output AC voltage are segmented, output voltage can be controlled by application program according to detection operating mode
System, so that the alternating voltage of different amplitudes is exported, until partial discharge phenomenon occurs for HV cable accessories 2, using program control exchange
Power supply can realize the flexible control of AC power.
Electromagnetic induction principle refers to, when being changed through the magnetic flux of closed circuit, closed circuit just has electric current generation.
Coupling in circuit refers to be fitted close between the input and output of two or more circuit elements, influenced each other, and
By interacting, the signal for exporting previous stage is sent to rear stage.In the present embodiment.High-frequency signal sensor 4 is set to ring
Shape and it is socketed on the earth cable 5 of HV cable accessories 2, naturally it is also possible on cross cable interconnection line.High-tension electricity
When shelf depreciation occurs for cable 1 or HV cable accessories 2, high-frequency pulse current signal can be produced on earth cable 5, electromagnetism sense is utilized
Principle is answered, the high-frequency pulse current signal that high-frequency signal sensor 4 is coupled out on earth cable 5 simultaneously converts thereof into high-frequency impulse
Voltage signal, then transmit this high-frequency pulse voltage signal to high speed data acquisition system through signal-transmitting cable 6.High frequency arteries and veins herein
It is analog signalses to rush current signal and high-frequency pulse voltage signal.The energy of high-frequency signal sensor 4 that the utility model is provided
Steep-sided pulse current signal is enough responded, has good frequency response special with higher sensitivity, and in comparatively wide frequency range
Property, be conducive to improving the measuring accuracy of the Auto-Test System.
High speed data acquisition system 7 is broadband, the digital oscilloscope of high sampling rate, and digital oscilloscope can be to high-frequency impulse
Current signal completes analog quantity to the conversion and collection of digital quantity.Specifically, digital oscilloscope is by from signal-transmitting cable 6
Analog quantity high-frequency pulse voltage signal is converted into digital quantity high-frequency pulse voltage signal, digital oscilloscope measurement digital quantity high frequency arteries and veins
Rush the amplitude of voltage signal and record its Wave data, then transmitted this amplitude and Wave data by high speed data bus 8
To industrial computer 9.
Industrial computer 9 receives the amplitude and Wave data of the digital quantity high-frequency pulse voltage signal from high speed data bus 8,
Judge whether the amplitude of the digital quantity high-frequency pulse voltage signal exceedes the activation threshold value of default generation shelf depreciation.If exceeding
Activation threshold value, industrial computer 9 stops boosting through the control programmable AC power supply 11 of serial data bus 10, and records current output electricity
Pressure, current output voltage is PDIV；If not up to activation threshold value, industrial computer 9 controls program control friendship through serial data bus 10
Flow power supply 11 to continue to boost, until occurring shelf depreciation.When not occurring shelf depreciation, the height that high speed data acquisition system 7 is collected
Frequency voltage signal magnitude very little；Once generation shelf depreciation, the amplitude that high speed data acquisition system 7 is collected will occur very significantly
Mutation.
The workflow for the HV cable accessories PDIV Auto-Test Systems that the utility model embodiment is provided refers to Fig. 2,
Specifically include following steps：
S1：Industrial computer 9 realizes the boost operations of high-tension cable 1 by automatically controlling to AC power 11；
S2：High-frequency signal sensor 4 couples the high-frequency pulse current letter of collection high-tension cable 1 using electromagnetic induction principle
Number, industrial computer 9 reads the collection result of high speed data acquisition system 7；
S3：According to detection operating mode setting activation threshold value, electric discharge amplitude current in S2 is calculated；
S4：Judge whether occur shelf depreciation, next step is gone to if occurring shelf depreciation, if not occurring shelf depreciation
Go to S1；
S5：The display of industrial computer 9, which is existed side by side, engraves the current test voltage output valve of record, i.e. PDIV；
S6：The control AC power 11 of industrial computer 9 closes voltage output；
S7：Test terminates.
In summary, the utility model proposes a kind of high pressure from the angle of HV cable accessories partial discharge inception voltage
Cable accessory PDIV automatic testing equipments, automaticity is high, sensitivity is good, test result is accurate, facilitate one man operation, can
Solve the problem of HV cable accessories PDIV device for accurately measuring is lacked in the prior art.
Those skilled in the art will readily occur to this practicality after considering specification and putting into practice the disclosure of utility model here
New other embodiments.The application is intended to any modification of the present utility model, purposes or adaptations, these
Modification, purposes or adaptations follow general principle of the present utility model and including undocumented skill of the utility model
Common knowledge or conventional techniques in art field.Description and embodiments be considered only as it is exemplary, it is of the present utility model
True scope and spirit are pointed out by following claim.
It should be appreciated that the accurate knot that the utility model is not limited to be described above and is shown in the drawings
Structure, and various modifications and changes can be being carried out without departing from the scope.Scope of the present utility model only will by appended right
Ask to limit.
Claims (4)
1. a kind of Auto-Test System of HV cable accessories partial discharge inception voltage, applied to HV cable accessories (2), institute
State HV cable accessories (2) to be connected in high-tension cable (1), cable core (3), the high-tension electricity are contained in the high-tension cable (1)
Earth cable (5) is connected with cable fittings (2), it is characterised in that the Auto-Test System includes：
Industrial computer (9), AC power (11), increasing apparatus (12), high-frequency signal sensor (4) and the high-speed data being sequentially connected
Collector (7)；
The industrial computer (9) is connected by serial data bus (10) with the AC power (11), the AC power (11)
Be connected by primary cable (13) with the increasing apparatus (12), the increasing apparatus (12) by high-voltage conducting wires (14) with it is described
Cable core (3) connection of high-tension cable (1), the high-frequency signal sensor (4) is annular and is enclosed on connecing for HV cable accessories (2)
On ground cable (5), the high-frequency signal sensor (4) is connected by signal-transmitting cable (6) and the high speed data acquisition system (7)
Connect, the high speed data acquisition system (7) is connected by high speed data bus (8) with the industrial computer (9).
2. the Auto-Test System of HV cable accessories partial discharge inception voltage according to claim 1, its feature exists
In the industrial computer (9) includes processor, memory, display and keyboard.
3. the Auto-Test System of HV cable accessories partial discharge inception voltage according to claim 1, its feature exists
In the AC power (11) is programmable AC power supply.
4. the Auto-Test System of HV cable accessories partial discharge inception voltage according to claim 1, its feature exists
In the high speed data acquisition system (7) is digital oscilloscope.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720010408.6U CN206362888U (en) | 2017-01-05 | 2017-01-05 | A kind of Auto-Test System of HV cable accessories partial discharge inception voltage |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720010408.6U CN206362888U (en) | 2017-01-05 | 2017-01-05 | A kind of Auto-Test System of HV cable accessories partial discharge inception voltage |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108196174A (en) * | 2018-02-05 | 2018-06-22 | 四川大学 | A kind of variable-frequency motor insulated local discharge PDIV and PDEV Auto-Test System and method |
| CN108710066A (en) * | 2018-05-18 | 2018-10-26 | 青岛科技大学 | A kind of interface discharging detection device and its method |
| CN111722066A (en) * | 2020-06-05 | 2020-09-29 | 武汉大学 | Method for testing partial discharge initial voltage of environment-friendly gas insulation medium |
| CN112285558A (en) * | 2020-10-23 | 2021-01-29 | 上海电气风电集团股份有限公司 | Insulation fault discharge test device and method for wind driven generator winding |
| CN116298741A (en) * | 2023-03-14 | 2023-06-23 | 青岛艾诺仪器有限公司 | Insulator partial discharge detection method |
-
2017
- 2017-01-05 CN CN201720010408.6U patent/CN206362888U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108196174A (en) * | 2018-02-05 | 2018-06-22 | 四川大学 | A kind of variable-frequency motor insulated local discharge PDIV and PDEV Auto-Test System and method |
| CN108710066A (en) * | 2018-05-18 | 2018-10-26 | 青岛科技大学 | A kind of interface discharging detection device and its method |
| WO2019080494A1 (en) * | 2018-05-18 | 2019-05-02 | 青岛科技大学 | Interface discharge detection apparatus and method therefor |
| CN111722066A (en) * | 2020-06-05 | 2020-09-29 | 武汉大学 | Method for testing partial discharge initial voltage of environment-friendly gas insulation medium |
| CN112285558A (en) * | 2020-10-23 | 2021-01-29 | 上海电气风电集团股份有限公司 | Insulation fault discharge test device and method for wind driven generator winding |
| CN116298741A (en) * | 2023-03-14 | 2023-06-23 | 青岛艾诺仪器有限公司 | Insulator partial discharge detection method |
| CN116298741B (en) * | 2023-03-14 | 2023-10-31 | 青岛艾诺仪器有限公司 | Insulator partial discharge detection method |
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