CN203204141U - Verifying device of oxide arrester insulation online monitoring device - Google Patents
Verifying device of oxide arrester insulation online monitoring device Download PDFInfo
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- CN203204141U CN203204141U CN 201320050862 CN201320050862U CN203204141U CN 203204141 U CN203204141 U CN 203204141U CN 201320050862 CN201320050862 CN 201320050862 CN 201320050862 U CN201320050862 U CN 201320050862U CN 203204141 U CN203204141 U CN 203204141U
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- arrester insulation
- lightning arrester
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Abstract
The utility model relates to a verifying device of an oxide arrester insulation online monitoring device. The verifying device comprises a control unit, signal generating units, a precision current unit, a reference precision voltage unit and a voltage amplifying unit. With the effect of the control unit, each of the signal generating modules generates an independent standard sinusoidal signal which is adjustable in frequency, amplitude, and phase angle, and the standard sinusoidal signal stimulates the precision current unit and the reference precision voltage unit in rear stages so that a current signal and a voltage signal, which are mutually independent, are generated. With the change of the frequency, the amplitude value and the phase position of the current signal and the voltage signal, different total currents, resistive currents, capacitative currents, reference voltages and harmonic signals can be outputted. With the help of the verifying device, primary measuring functions, such as total currents, resistive currents, capacitative currents, reference voltages, harmonic components and the like, of the oxide arrester insulation online monitoring device are enabled to be verified in a highly accurate manner.
Description
Technical field
The utility model relates to a kind of oxide lightning arrester insulation on-line monitoring UC device, the calibration, calibrating and the detection range that belong to the power test instrument, utilizing this calibration equipment can be that measurement functions such as total current, current in resistance property, capacity current, reference voltage, harmonic component carry out the verification of pin-point accuracy to the main measurement function of oxide lightning arrester insulation on-line monitoring equipment, and the normal voltage that produces, current signal all can effectively be carried out magnitude tracing.
Background technology
The oxide lightning arrester is the visual plant that guarantees safe operation of power system, but because oxide lightning arrester work under bad environment is easy to generate phenomenons such as aging, so the oxide lightning arrester is monitored in real time very necessary.In light of this situation, domestic a lot of power test instrument manufacturing firm begins development, produces oxide lightning arrester insulation on-line monitoring equipment.But according to investigations, oxide lightning arrester insulation on-line monitoring equipment quality on the home market is uneven, and this class testing instrument is carried out verification and provides reliable checking data that the quality that improves oxide lightning arrester insulation on-line monitoring equipment is had positive effect to the user.
Lacking corresponding calibration equipment at present effectively calibrates or examines and determine oxide lightning arrester insulation on-line monitoring equipment, can't judge the quality of oxide lightning arrester insulation on-line monitoring device measuring data, but therefore be badly in need of the oxide lightning arrester insulation on-line monitoring UC device that design has good traceability, high and the oxide lightning arrester insulation on-line monitoring UC device that can trace to the source of accuracy just satisfies the urgent needs of present verification work.
Summary of the invention
The purpose of this utility model is the principle of work at existing oxide lightning arrester insulation on-line monitoring equipment, but take into account the traceability of calibration equipment, a kind of oxide lightning arrester insulation on-line monitoring UC device is provided, the demand of verification oxide lightning arrester insulation on-line monitoring equipment is satisfied in accuracy, but and has a good traceability.The core thinking is: calibrating installation output amplitude, frequency and phase place be controlled voltage and current signal accurately.Utilizing the calibration equipment of the utility model design can be that effective verification work is carried out in measurements such as total current, current in resistance property, capacity current, reference voltage, harmonic component to the main measurement function of oxide lightning arrester insulation on-line monitoring equipment.
To achieve these goals, technical solutions of the utility model provide a kind of oxide lightning arrester insulation on-line monitoring UC device, comprise control module, first signal generating unit, the secondary signal generating unit, the precision current unit, with reference to the accurate voltage unit, the voltage amplification unit, it is characterized in that: the control end that is inputed to first and second signal generating unit by control module output control signal respectively, the output of first signal generating unit connects the input of corresponding precision current unit, the output of secondary signal generating unit connects the input with reference to the accurate voltage unit, precision current unit output current signal I, output terminal with reference to the accurate voltage unit is connected voltage amplification unit output reference voltage U with the input end of voltage amplification unit.
Aforesaid oxide lightning arrester insulation on-line monitoring UC device, it is characterized in that: signal generator module is taked the circuit based on chip AD421, directly produces the sinusoidal signal that frequency, amplitude and phase place are all stablized adjustable and curve smoothing with the DA chip.
Aforesaid oxide lightning arrester insulation on-line monitoring UC device, it is characterized in that: the voltage amplification unit comprises impedance matching circuit, to adapt to the oxide lightning arrester insulation on-line monitoring equipment of different qualities input impedance.
The beneficial effects of the utility model are, use this oxide lightning arrester insulation on-line monitoring UC device, can be that measurement functions such as total current, current in resistance property, capacity current, voltage and harmonic component carry out the verification of pin-point accuracy to the main measurement function of oxide lightning arrester insulation on-line monitoring equipment, and the standard signal that produces can make things convenient for, effectively carry out magnitude tracing.
Description of drawings
Fig. 1 is the oxide lightning arrester insulation on-line monitoring UC schematic diagram of device of the utility model embodiment.
Embodiment
In order to understand the present invention better, further illustrate content of the present invention below in conjunction with embodiment, but content of the present invention not only is confined to the following examples.Those skilled in the art can make various changes or modifications the present invention, and these equivalent form of values are equally within the listed claims limited range of the application.
Mark among Fig. 1: 1-control module, 2,4-signal generating unit, 3-precision current unit, 5-with reference to the accurate voltage unit, 6-voltage amplification unit,
I-electric current,
U-reference voltage.
Referring to shown in Figure 1, be the oxide lightning arrester insulation on-line monitoring UC schematic diagram of device of the utility model embodiment.Connect signal generating unit 2,4 control end by control module output control signal, the output of signal generating unit 2 connects the input of corresponding precision current unit 3, and precision current unit 3 is output as electric current.The output of signal generating unit 4 connects the input with reference to accurate voltage unit 5, is connected voltage amplification unit 6 output reference voltages with the input of voltage amplification unit 6 with reference to the output terminal of accurate voltage unit 5
U
Its principle of work is: 1(is specially TMS320F2812 at control module) control action under, each signal generating unit 2,4(realize based on chip AD421) can produce the adjustable level and smooth sinusoidal signal unit of independent frequency, amplitude and phase angle, these sinusoidal signals can to back level separately independently precision current unit 3, encourage with reference to accurate voltage unit 5, voltage amplification unit 6, thereby form separate current signal
IAnd voltage signal
U, by adjusting frequency, amplitude and the phase angle of current signal and voltage signal, can simulate different total currents, current in resistance property, capacity current, reference voltage and harmonic component signal.
In the present embodiment, signal generating unit 2,4 has been taked technology based on the AD421 chip to produce frequency, amplitude and phase place easily all to stablize sinusoidal signal adjustable and that curve smoothing is stable.
The utility model has also adopted following core technology in design:
1, the equal adjustable standard sine signal generator module of frequency, phase place and amplitude
In order to reach the purpose of verification, at first need to generate basic standard sine signal, these sinusoidal signals will be used for encouraging rearmounted precision current unit and accurate voltage unit and producing corresponding normalized current signal and reference voltage signal.In order at first to obtain all adjustable standard sine signals of frequency, phase place and amplitude, TMS320F2812 and 16 pin-point accuracy DA chip AD421 have been taked.Utilize DSP2812 control AD421 output frequency, phase place and the adjustable and level and smooth sinusoidal signal of amplitude stability.Wherein: the frequency of sinusoidal signal can be highly stable; The sinusoidal signal curve is very level and smooth, can't see any sawtooth fully with conventional oscillograph.
2, the oxide lightning arrester insulation on-line monitoring equipment that adapts to different voltage measurement principles by the design impedance matching circuit.
Because oxide lightning arrester insulation on-line monitoring equipment voltage measurement line is different with the voltage measurement principle, be easy to cause that concussion appears in voltage follower circuit, therefore the utility model is at voltage measurement principle and input impedance in the oxide lightning arrester insulation on-line monitoring equipment, specialized designs impedance matching circuit, by this impedance matching circuit, can significantly improve this calibration equipment voltage output unit to the load capacity of capacitive load and inductive load.
The content that is not described in detail in this instructions belongs to this area professional and technical personnel's known prior art.
Claims (3)
1. oxide lightning arrester insulation on-line monitoring UC device, comprise control module, first signal generating unit, secondary signal generating unit, precision current unit, with reference to accurate voltage unit, voltage amplification unit, it is characterized in that: the control end that is inputed to first and second signal generating unit by control module output control signal respectively, the output of first signal generating unit connects the input of corresponding precision current unit, the output of secondary signal generating unit connects the input with reference to the accurate voltage unit, precision current unit output current signal
I, be connected voltage amplification unit output reference voltage with the input end of voltage amplification unit with reference to the output terminal of accurate voltage unit
U
2. oxide lightning arrester insulation on-line monitoring UC device according to claim 1, it is characterized in that: signal generator module is taked the circuit based on chip AD421, directly produces the sinusoidal signal that frequency, amplitude and phase place are all stablized adjustable and curve smoothing with the DA chip.
3. oxide lightning arrester insulation on-line monitoring UC device according to claim 1, it is characterized in that: the voltage amplification unit comprises impedance matching circuit, to adapt to the oxide lightning arrester insulation on-line monitoring equipment of different qualities input impedance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320050862 CN203204141U (en) | 2013-01-30 | 2013-01-30 | Verifying device of oxide arrester insulation online monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320050862 CN203204141U (en) | 2013-01-30 | 2013-01-30 | Verifying device of oxide arrester insulation online monitoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203204141U true CN203204141U (en) | 2013-09-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320050862 Expired - Lifetime CN203204141U (en) | 2013-01-30 | 2013-01-30 | Verifying device of oxide arrester insulation online monitoring device |
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| CN (1) | CN203204141U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103116150A (en) * | 2013-01-30 | 2013-05-22 | 中国电力科学研究院 | Verifying device of insulated online monitoring equipment of oxide arrester |
-
2013
- 2013-01-30 CN CN 201320050862 patent/CN203204141U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103116150A (en) * | 2013-01-30 | 2013-05-22 | 中国电力科学研究院 | Verifying device of insulated online monitoring equipment of oxide arrester |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: STATE GRID CORPORATION OF CHINA Free format text: FORMER NAME: CHINA ELECTRIC POWER RESEARCH INSTITUTE |
|
| CP03 | Change of name, title or address |
Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee after: State Grid Corporation of China Patentee after: China Electric Power Research Institute Address before: 100192 Beijing city Haidian District Qinghe small Camp Road No. 15 Patentee before: China Electric Power Research Institute Patentee before: State Grid Corporation of China |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Co-patentee after: CHINA ELECTRIC POWER RESEARCH INSTITUTE Co.,Ltd. Patentee after: STATE GRID CORPORATION OF CHINA Address before: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Co-patentee before: China Electric Power Research Institute Patentee before: State Grid Corporation of China |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130918 |