CN202837386U - Measuring device for transient voltage signals - Google Patents
Measuring device for transient voltage signals Download PDFInfo
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- CN202837386U CN202837386U CN 201220542237 CN201220542237U CN202837386U CN 202837386 U CN202837386 U CN 202837386U CN 201220542237 CN201220542237 CN 201220542237 CN 201220542237 U CN201220542237 U CN 201220542237U CN 202837386 U CN202837386 U CN 202837386U
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- 230000001052 transient effect Effects 0.000 title claims abstract description 23
- 238000012545 processing Methods 0.000 claims abstract description 29
- 238000005070 sampling Methods 0.000 claims abstract description 18
- 238000005259 measurement Methods 0.000 claims description 12
- 230000007246 mechanism Effects 0.000 claims description 12
- 230000009977 dual effect Effects 0.000 claims description 7
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000010355 oscillation Effects 0.000 abstract 1
- 238000010248 power generation Methods 0.000 abstract 1
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Abstract
The utility model discloses a measuring device for transient voltage signals. The measuring device comprises a high-speed A/D (analog/digital) sampling module, a high-speed FPGA (field programmable gate array) processing module and a high-speed DSP (digital signal processing) operation module. The FPGA processing module is connected with the high-speed A/D sampling module by an LVDS (low-voltage differential signaling) interface, controls the high-speed A/D sampling module and acquires sampled data, the high-speed DSP operation module is connected with the high-speed FPGA processing module, the FPGA processing module transmits the sampled data to the high-speed DSP operation module, and the high-speed DSP operation module computes the sampled data. The measuring device for the transient voltage signals has the advantages that transient voltage amplitudes with change intervals within 5 microseconds can be measured, the problem that transient voltage signals in a power system cannot be measured is effectively solved, and the measuring device is beneficial to quantitatively analyzing various oscillation signals in electrical power system and researching grid connection for power generation from new energy sources such as wind power.
Description
Technical field
The utility model relates to a kind of measurement mechanism of transient voltage signal, belongs to electric power/electrical technology field.
Background technology
Transient voltage changes very common in electric system, and the vibration transition that produces during such as the reactive-load compensation capacitor switching is characterized by the duration very short, generally all within 10uS.Wind power generating set is connected with electrical network by power converter usually with the Technics of Power Electronic Conversion device, and often with the breach of the uS order of magnitude, essence also is voltage transient to its waveform.
Existing voltage signal measurement mechanism, A/D sampling rate after the signal processing, are difficult to tell the transient voltage of the uS order of magnitude at the KSPS order of magnitude.
The utility model content
Goal of the invention: in order to overcome the deficiencies in the prior art, the utility model provides a kind of measurement mechanism of transient voltage signal, it is characterized in that: the measurement mechanism of described transient voltage signal comprises high-speed a/d sampling module, high speed FPGA processing module and high-speed dsp processing module; The input end of described high-speed a/d sampling module is connected with voltage and current signal, the output terminal of high-speed a/d sampling module is connected with the input end of high speed FPGA processing module, the input end of described high-speed dsp computing module is connected with high speed FPGA processing module, and the output terminal of high-speed dsp computing module is connected with man-machine interface.
The output terminal of described high-speed a/d sampling module is connected by the LVDS interface with the input end of high speed FPGA processing module.
Described high speed FPGA processing module includes dual port RAM, and the input end of described high-speed dsp computing module is connected by dual port RAM with high speed FPGA processing module.
Beneficial effect: the measurement mechanism of a kind of transient voltage signal that the utility model provides, can measure the transient voltage amplitude of transformation period within 5uS, effectively solve the immeasurable problem of transient voltage signal in the electric system, be conducive to various oscillator signals in the quantitative test electrical energy system, and the generation of electricity by new energy such as the wind-force research of being incorporated into the power networks.
Description of drawings
Fig. 1 is structured flowchart of the present utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described.
Be illustrated in figure 1 as a kind of measurement mechanism of transient voltage signal, the measurement mechanism of described transient voltage signal comprises high-speed a/d sampling module, high speed FPGA processing module and high-speed dsp processing module; The input end of described high-speed a/d sampling module is connected with voltage and current signal, the output terminal of high-speed a/d sampling module is connected with the input end of high speed FPGA processing module, the input end of described high-speed dsp computing module is connected with high speed FPGA processing module, and the output terminal of high-speed dsp computing module is connected with man-machine interface; The output terminal of described high-speed a/d sampling module is connected by the LVDS interface with the input end of high speed FPGA processing module; Described high speed FPGA processing module includes dual port RAM, and the input end of described high-speed dsp computing module is connected by dual port RAM with high speed FPGA processing module.
The high-speed a/d sampling module adopts the high-speed a/d chip, and 16 precision are provided during 120 MSPS data rate, and with the LVDS interface.The analog input of transient voltage signal through receiving the A/D chip with the form of difference behind the modulate circuit.Gather 2M point data in the every power frequency period of high speed FPGA processing module control high-speed a/d chip, carry out numeral and resample, obtain per cycle sampled data of 20000, sampling number is according to being spaced apart 1uS.Per cycle 20000 the sampled data of high speed FPGA processing module after conversion delivered to the high-speed dsp computing module by its inner dual port RAM, after DSP carries out FFT and wavelet transformation, detects the transient voltage amplitude.
The above only is preferred implementation of the present utility model; be noted that for those skilled in the art; under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (3)
1. the measurement mechanism of a transient voltage signal, it is characterized in that: the measurement mechanism of described transient voltage signal comprises high-speed a/d sampling module, high speed FPGA processing module and high-speed dsp processing module; The input end of described high-speed a/d sampling module is connected with voltage and current signal, the output terminal of high-speed a/d sampling module is connected with the input end of high speed FPGA processing module, the input end of described high-speed dsp computing module is connected with high speed FPGA processing module, and the output terminal of high-speed dsp computing module is connected with man-machine interface.
2. the measurement mechanism of transient voltage signal according to claim 1, it is characterized in that: the output terminal of described high-speed a/d sampling module is connected by the LVDS interface with the input end of high speed FPGA processing module.
3. the measurement mechanism of transient voltage signal according to claim 1 and 2, it is characterized in that: described high speed FPGA processing module includes dual port RAM, and the input end of described high-speed dsp computing module is connected by dual port RAM with high speed FPGA processing module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220542237 CN202837386U (en) | 2012-10-23 | 2012-10-23 | Measuring device for transient voltage signals |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220542237 CN202837386U (en) | 2012-10-23 | 2012-10-23 | Measuring device for transient voltage signals |
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| Publication Number | Publication Date |
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| CN202837386U true CN202837386U (en) | 2013-03-27 |
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| CN 201220542237 Expired - Fee Related CN202837386U (en) | 2012-10-23 | 2012-10-23 | Measuring device for transient voltage signals |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103472291A (en) * | 2013-08-29 | 2013-12-25 | 国家电网公司 | Data acquiring system of high-speed high-precision high-isolation voltage |
| CN104101781A (en) * | 2014-07-15 | 2014-10-15 | 国家电网公司 | Method for measuring substation bus voltage phase angle instantaneous values |
| CN104101766A (en) * | 2014-07-25 | 2014-10-15 | 国家电网公司 | Method for measuring substation voltage amplitude instantaneous values |
| CN109633253A (en) * | 2018-12-07 | 2019-04-16 | 中电科仪器仪表(安徽)有限公司 | One kind realizing voltage transient signal deteching circuit and method based on FPGA |
-
2012
- 2012-10-23 CN CN 201220542237 patent/CN202837386U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103472291A (en) * | 2013-08-29 | 2013-12-25 | 国家电网公司 | Data acquiring system of high-speed high-precision high-isolation voltage |
| CN103472291B (en) * | 2013-08-29 | 2016-08-31 | 国家电网公司 | A kind of data collecting system of high-speed, high precision high-isolating |
| CN104101781A (en) * | 2014-07-15 | 2014-10-15 | 国家电网公司 | Method for measuring substation bus voltage phase angle instantaneous values |
| CN104101781B (en) * | 2014-07-15 | 2016-09-14 | 国家电网公司 | Substation bus bar voltage phase angle instantaneous value measuring method |
| CN104101766A (en) * | 2014-07-25 | 2014-10-15 | 国家电网公司 | Method for measuring substation voltage amplitude instantaneous values |
| CN109633253A (en) * | 2018-12-07 | 2019-04-16 | 中电科仪器仪表(安徽)有限公司 | One kind realizing voltage transient signal deteching circuit and method based on FPGA |
| CN109633253B (en) * | 2018-12-07 | 2020-12-08 | 中电科仪器仪表(安徽)有限公司 | Circuit and method for realizing voltage transient signal detection based on FPGA |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130327 Termination date: 20191023 |