CN201237620Y - High-tension dielectric loss test device - Google Patents
High-tension dielectric loss test device Download PDFInfo
- Publication number
- CN201237620Y CN201237620Y CNU200820055276XU CN200820055276U CN201237620Y CN 201237620 Y CN201237620 Y CN 201237620Y CN U200820055276X U CNU200820055276X U CN U200820055276XU CN 200820055276 U CN200820055276 U CN 200820055276U CN 201237620 Y CN201237620 Y CN 201237620Y
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- dielectric loss
- high voltage
- voltage dielectric
- loss measurement
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Abstract
The utility model provides a high-voltage dielectric loss test device, which substitutes resonance step-up technology for power frequency step-up and solves the problems that the prior relatively bulky power frequency step-up device is more inconvenient to place and wire at site, and the power frequency interference is more serious. The high-voltage dielectric loss test device tracks and feedbacks various frequencies at real time and can match electric bridges, has a better site application value and can improve the monitoring function for equipment. The high-voltage dielectric loss test device comprises a frequency conversion power supply module, a high-voltage dielectric loss measurement module and a control module, wherein, the frequency conversion power supply module can output 0 to 160V and 40 to 70Hz sine wave power; the high-voltage dielectric loss measurement module can analyze and calculate the current signals of a standard loop and a tested loop which are sampled at high speed by a high-precision multi-channel AD converter to obtain the capacitance and dielectric loss value of a tested product; the control module is connected with the frequency conversion power supply module and the high-voltage dielectric loss measurement module to control the frequency conversion power supply module and the high-voltage dielectric loss measurement module so as to finish the testing processes such as step-up, measurement, calculation, step-down, and the like and finally obtain the measuring result.
Description
Technical field
The utility model relates to a kind of proving installation, particularly a kind of high voltage dielectric loss testing device that is used for power equipment is carried out the high-pressure medium loss measurement.
Background technology
For operation conditions and the installation quality of checking power equipment, guarantee that device security normally moves, in commissioning test, preventive trial and the maintenance process of engineering, all need to carry out the measurement of high-pressure medium loss, so the high-pressure medium loss test is a kind of important measures that guarantee power equipment transportation, installation, repair quality and safe operation.
In most of high-pressure medium loss tests, the tg δ of measuring equipment is the more and effective method comparatively of a kind of use; Yet the trial voltage of existing dielectric loss testing device generally is below the 12KV, in insulation when having this defective of air gap, often needs to find and definite by the curved line relation curve tg δ=f (U) that makes tg δ and impressed voltage.In high-pressure medium loss test in the past, all be to adopt the mode that power frequency testing transformer boosts to obtain testing high pressure usually.Need collect equipment such as source control box, HT testing transformer, high voltage standard capacitor, high voltage dielectric loss electric bridge during test.Because trial voltage is very high, requires the output power of power supply very big, so the equipment of power unit heaviness very, wiring is complicated, on-the-spot serious interference, and site test is caused a lot of inconvenience, causes the test of high voltage dielectric loss not carry out widely.
The utility model content
The purpose of this utility model is to provide a kind of high voltage dielectric loss testing device, adopting the resonance step-up technology to substitute power frequency boosts, it is relatively heavier to remedy existing power frequency increasing apparatus, place at the scene and connect up cumbersome, the more serious problem of interference ratio is carried out real-time follow-up, feedback to various frequencies under the power frequency state, and mates with electric bridge, have rig-site utilization value preferably, can improve monitoring effect equipment.
The technical matters that the utility model solved can realize by the following technical solutions:
A kind of high voltage dielectric loss testing device is characterized in that it comprises:
One can export 0～160V, the variable-frequency power sources module of the sine-wave power of 40～70Hz;
One current signal by high-precision multi-path AD converter real time high-speed standard for manual sampling loop and tested loop calculates by analysis, thereby draws the high voltage dielectric loss measurement module of the electric capacity and the dielectric loss value of test specimen; And
One is connected with the high voltage dielectric loss measurement module with described variable-frequency power sources module, control of conversion power module and high voltage dielectric loss measurement module, finish boost, measure, test process such as calculating, step-down, finally obtain the control module of measurement result.
Described variable-frequency power sources module also is connected with the clock signal module, and described clock signal module is connected in the described variable-frequency power sources module by connector.
Described variable-frequency power sources module also is connected with key-press module, is convenient to control described variable-frequency power sources module.
Described high voltage dielectric loss measurement module include acquired signal signal acquisition module, handle collect the Signal Processing module and will handle after signal be transferred to the transport module of described control module, described signal acquisition module is connected with described processing module respectively with transport module.
Described high voltage dielectric loss measurement module also comprises one provides the standard loop module of standard signal for processing module analysis contrast in the described high voltage dielectric loss measurement module, and described standard loop module is connected with signal acquisition module in the described high voltage dielectric loss measurement module.
Described high voltage dielectric loss measurement module also comprises one provides the tested return circuit module of signal-under-test for processing module analysis contrast in the described high voltage dielectric loss measurement module, and described tested return circuit module is connected with signal acquisition module in the described high voltage dielectric loss measurement module.
By serial port communication, finish the transmission of control function and data between described control module and the described high voltage dielectric loss measurement module.
Connect printer by interface on the described control module, the output Processing Structure.
High voltage dielectric loss testing device of the present utility model has following characteristics:
A tractor serves several purposes: not only have the function that the resonance step-up mode is measured high voltage dielectric loss, also possesses conventional external standard capacitor working method simultaneously, can can be adapted at using the series resonance mode to boost and measure the test of dielectric loss from the frequency of motion tracking external power source.
Integrated design: instrument with Component Design such as high voltage dielectric loss tester, variable-frequency power sourcess in a cabinet, compact conformation, wiring is simple, convenient carrying is for site test provides convenience.
Automatically simple: complete Chinese operation interface, simple and clear, design has automatically and the manual measurement mode is selected direct-reading as a result for the user.
Safety practice:
(1) high voltage protective: test product short circuit, puncture or high pressure fluctuations, can cut off output rapidly.The user also can set overvoltage as required, cross flow valuve during resonance step-up.
(2) ground connection is detected: the unique ground connection measuring ability of instrument, the measurement of can not boosting when unearthed.
(3) anti-" hold and rise ": the examination of measurement high capacity voltage can occur and raise " hold and rise " effect when brilliant, instrument can be from the motion tracking output voltage, and the maintenance trial voltage is constant.
Large screen display: adopt the greyish white backlight liquid crystal display of giant-screen dot matrix, complete Chinese operation interface, clear display understands that the user only need get final product by prompting operation.
Print storage: carry mini-printer, can be with the measurement result printout.Measurement result can also be stored in the instrument, so that later reference.
Real-time clock: band real-time clock in the instrument, can write down the date and time of measuring.
Description of drawings
Fig. 1 is a structured flowchart of the present utility model;
Fig. 2 is the circuit theory diagrams of control module of the present utility model;
Fig. 3 is the circuit theory diagrams of high voltage dielectric loss measurement module of the present utility model;
Fig. 4 is the circuit theory diagrams of variable-frequency power sources module of the present utility model;
Fig. 5 is the circuit theory diagrams of clock signal module of the present utility model;
Fig. 6 is the circuit theory diagrams of standard loop module of the present utility model;
Fig. 7 is the circuit theory diagrams of tested return circuit module of the present utility model;
Fig. 8 is the circuit theory diagrams of button display module of the present utility model.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
As shown in Figure 1, a kind of high voltage dielectric loss testing device, it comprises variable-frequency power sources module 1, high voltage dielectric loss measurement module 2 and control module 3; Be connected by serial port between control module 3 and variable-frequency power sources module 1 and the high voltage dielectric loss measurement module 2.
As shown in Figure 2, the circuit part of control module 3 is a core with singlechip chip U101, connects and control store module U105 by latch U102, is connected with the control button through chip U113; Singlechip chip U101 can connect printer by bus through link block CZ102, exports last Processing Structure.
In addition, singlechip chip U101 is connected with display by chip U106 and U103 through link block CZ101, and in utility model, described display has adopted the greyish white backlight liquid crystal display of dot matrix giant-screen, and complete Chinese operation interface is clear.
Singlechip chip U101 is connected with high voltage dielectric loss measurement module 2 with variable-frequency power sources module 1 through link block CZ104 by chip U108, adopt serial port communication between variable-frequency power sources module 1 and high voltage dielectric loss measurement module and the control module 3, finish the transmission of control function and data.
After receiving the operational order that the user sends, the singlechip chip U101 on the control module 3 is control of conversion power module 1 and high voltage dielectric loss measurement module 2 on request, finish boost, measure, test process such as calculating, step-down, finally obtain measurement result.By the printer prints output that connects, or be kept on the memory module U105 of control module 3 inside.
As shown in Figure 3, the circuit part of high voltage dielectric loss measurement module 2 is a core with singlechip chip U101, include acquired signal signal acquisition module, handle collect the Signal Processing module and will handle after signal be transferred to the transport module of described control module, described signal acquisition module is connected with described processing module respectively with transport module; By constituting the sampling of high-precision multi-path AD converter real time high-speed by comprising the signal acquisition module that voltage transformer pt, current transformer CT, amplifier U111, operational amplifier U112 and resistance, electric capacity, inductance and diode form; Singlechip chip U101 constitutes the processing module in the high voltage dielectric loss measurement module 2, be connected to the link block CZ104 of control module 3 by the transport module be made up of resistance and diode through link block P1, the data transmission after singlechip chip U101 is handled is given control module 3.
As Fig. 5, shown in Figure 6, high voltage dielectric loss measurement module 2 also be connected with provide standard signal for processing module analysis contrast in the high voltage dielectric loss measurement module 2 the standard loop module and the tested return circuit module of signal-under-test for processing module analysis contrast in the high voltage dielectric loss measurement module 2 is provided, described standard loop module and tested return circuit module are connected with signal acquisition module in the described high voltage dielectric loss measurement module 2.
Described its circuit diagram of standard loop module is referring to Fig. 5, and described standard loop module is connected to standard signal among the link block P2 of signal acquisition module described in the high voltage dielectric loss measurement module 2 by contact Cn, gathers standard signal by described signal acquisition module.
Described its circuit diagram of tested return circuit module is referring to Fig. 6, described tested return circuit module is connected to measured signal among the link block P2 of signal acquisition module described in the high voltage dielectric loss measurement module 2 by contact Ux-z, gather measured signal by described signal acquisition module.
Described signal acquisition module will be transported to singlechip chip U101 from the current signal of described standard loop module and tested return circuit module collection, through singlechip chip U101 analytical calculation, thereby draw the electric capacity and the dielectric loss value of test specimen.The measurement result of singlechip chip U101 is sent in the control module 3 by serial port.
As shown in Figure 4, variable-frequency power sources module 1 is a program-controlled FMAM power supply, can export 0～160V, the sine-wave power of 40～70Hz.
Variable-frequency power sources module 1 is by singlechip chip U301 control, and the link block CZ305 that connects by singlechip chip U301 adopts the mode of serial port to be connected with the link block CZ104 of control module 3, receives regulating command, presses the voltage that order request output is set.
Be connected with expansion module U302 in the variable-frequency power sources module 1, singlechip chip U301 connects pilot lamp in the variable-frequency power sources module 1 respectively by expansion module U302, comprise power supply L, N, POWER-IN, POWER-OUT, COM ,+12V, ground connection, indications such as AC220, OUT, be convenient to check and connect the duty of variable-frequency power sources module 1.
Because variable-frequency power sources module 1 needs stable output 0～160V, the sine-wave power of 40～70Hz, therefore singlechip chip U301 is connected with the clock module of a generation stable clock signal by link block CZ303, CZ304, the circuit diagram of described clock module is participated in Fig. 4, link block CZ303 in the variable-frequency power sources module 1, CZ304 are connected with link block CZ401, CZ402 in the described clock module, and clock signal is provided.
For the ease of variable-frequency power sources module 1 is controlled, and understand the duty of variable-frequency power sources module 1 in real time, variable-frequency power sources module 1 also is connected with the button display module, and the circuit diagram of described button display module is referring to Fig. 7.
As shown in Figure 7, described button display module is connected the work of control of conversion power module 1 through contact Prot5, Prot6, Prot7 with expansion module U302 in the variable-frequency power sources module 1 by chip U320; In described button display module, can connect display, show variable-frequency power sources module 1 current working state by link block CZ208.
Variable-frequency power sources module 1 has characteristics such as volume is little, in light weight, efficient is high, output is stable, adjusting fineness height, also has defencive functions such as overcurrent, overvoltage, excess temperature, is a digitized intelligent power.The needs that this instrument series resonance is boosted have been satisfied.
More than show and described ultimate principle of the present utility model and principal character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that describes in the foregoing description and the instructions just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications; these changes and improvements all fall in claimed the utility model scope, and the claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (8)
1, a kind of high voltage dielectric loss testing device is characterized in that it comprises:
One can export 0～160V, the variable-frequency power sources module of the sine-wave power of 40～70Hz;
One current signal by high-precision multi-path AD converter real time high-speed standard for manual sampling loop and tested loop calculates by analysis, thereby draws the high voltage dielectric loss measurement module of the electric capacity and the dielectric loss value of test specimen; And
One is connected with the high voltage dielectric loss measurement module with described variable-frequency power sources module, control of conversion power module and high voltage dielectric loss measurement module, finish boost, measure, test process such as calculating, step-down, finally obtain the control module of measurement result.
2, high voltage dielectric loss testing device as claimed in claim 1 is characterized in that: described variable-frequency power sources module also is connected with the clock signal module, and described clock signal module is connected in the described variable-frequency power sources module by connector.
3, high voltage dielectric loss testing device as claimed in claim 1 is characterized in that: described variable-frequency power sources module also is connected with key-press module, is convenient to control described variable-frequency power sources module.
4, high voltage dielectric loss testing device as claimed in claim 1, it is characterized in that: described high voltage dielectric loss measurement module include acquired signal signal acquisition module, handle collect the Signal Processing module and will handle after signal be transferred to the transport module of described control module, described signal acquisition module is connected with described processing module respectively with transport module.
5, high voltage dielectric loss testing device as claimed in claim 4, it is characterized in that: described high voltage dielectric loss measurement module also comprises one provides the standard loop module of standard signal for processing module analysis contrast in the described high voltage dielectric loss measurement module, and described standard loop module is connected with signal acquisition module in the described high voltage dielectric loss measurement module.
6, high voltage dielectric loss testing device as claimed in claim 4, it is characterized in that: described high voltage dielectric loss measurement module also comprises one provides the tested return circuit module of signal-under-test for processing module analysis contrast in the described high voltage dielectric loss measurement module, and described tested return circuit module is connected with signal acquisition module in the described high voltage dielectric loss measurement module.
7, high voltage dielectric loss testing device as claimed in claim 1 is characterized in that: by serial port communication, finish the transmission of control function and data between described control module and the described high voltage dielectric loss measurement module.
8, high voltage dielectric loss testing device as claimed in claim 1 is characterized in that: connect printer by interface on the described control module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820055276XU CN201237620Y (en) | 2008-01-31 | 2008-01-31 | High-tension dielectric loss test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820055276XU CN201237620Y (en) | 2008-01-31 | 2008-01-31 | High-tension dielectric loss test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201237620Y true CN201237620Y (en) | 2009-05-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820055276XU Expired - Lifetime CN201237620Y (en) | 2008-01-31 | 2008-01-31 | High-tension dielectric loss test device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102156250A (en) * | 2011-03-17 | 2011-08-17 | 华北电力大学（保定） | Dielectric loss factor measurement method based on equivalent model |
| CN102981062A (en) * | 2012-12-20 | 2013-03-20 | 国网电力科学研究院武汉南瑞有限责任公司 | Insulation detection method for high voltage bushing based on frequency domain dielectric spectroscopy |
| CN103558458A (en) * | 2013-11-19 | 2014-02-05 | 国家电网公司 | Cable insulation characteristic judging method |
| CN103760425A (en) * | 2014-01-22 | 2014-04-30 | 湖南大学 | Method and device for rapidly measuring dielectric loss angle based on time domain quasi-synchronization |
| CN104914318A (en) * | 2015-06-01 | 2015-09-16 | 苏州市华安普电力工程有限公司 | Variable frequency dielectric loss tester |
| CN109061315A (en) * | 2018-11-01 | 2018-12-21 | 伟宸科技（武汉）有限公司 | A kind of ultralow frequency dielectric loss tester |
-
2008
- 2008-01-31 CN CNU200820055276XU patent/CN201237620Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102156250A (en) * | 2011-03-17 | 2011-08-17 | 华北电力大学（保定） | Dielectric loss factor measurement method based on equivalent model |
| CN102981062A (en) * | 2012-12-20 | 2013-03-20 | 国网电力科学研究院武汉南瑞有限责任公司 | Insulation detection method for high voltage bushing based on frequency domain dielectric spectroscopy |
| CN103558458A (en) * | 2013-11-19 | 2014-02-05 | 国家电网公司 | Cable insulation characteristic judging method |
| CN103558458B (en) * | 2013-11-19 | 2015-11-25 | 国家电网公司 | A kind of determination methods of insulation characterisitic quality of cable |
| CN103760425A (en) * | 2014-01-22 | 2014-04-30 | 湖南大学 | Method and device for rapidly measuring dielectric loss angle based on time domain quasi-synchronization |
| CN104914318A (en) * | 2015-06-01 | 2015-09-16 | 苏州市华安普电力工程有限公司 | Variable frequency dielectric loss tester |
| CN109061315A (en) * | 2018-11-01 | 2018-12-21 | 伟宸科技（武汉）有限公司 | A kind of ultralow frequency dielectric loss tester |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090513 |