CN109357752A - A kind of method of low-voltage power line platform area's testing impedance and Noise Acquisition - Google Patents
A kind of method of low-voltage power line platform area's testing impedance and Noise Acquisition Download PDFInfo
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- CN109357752A CN109357752A CN201811234028.6A CN201811234028A CN109357752A CN 109357752 A CN109357752 A CN 109357752A CN 201811234028 A CN201811234028 A CN 201811234028A CN 109357752 A CN109357752 A CN 109357752A
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- noise
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- power line
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- voltage power
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H17/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves, not provided for in the preceding groups
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- General Physics & Mathematics (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The present invention relates to a kind of methods of low-voltage power line platform area's testing impedance and Noise Acquisition, realize low-voltage power line Noise Acquisition, analysis, comprising the following steps: (1) Noise Acquisition analytical equipment analyzes work by connecting line coupled computer data acquisition；(2) Noise Acquisition analytical equipment is internally integrated signal feedback net circuit, operational amplifier circuit, zero cross detection circuit, power isolation circuit and realizes and obtain noise signal from power line；(3) data acquisition board is converted data to digital signal and is input in computer, calculated by noise analysis software by high-speed sampling, realizes the analysis of noise signal, is drawn frequency time figure etc., is intuitively shown the amplitude-frequency image of signal.The present invention makes the acquisition of low-voltage power line noise, easy analysis, quick.It is easy to operate, data supporting is provided for the research of low-voltage power line communication channel, good selection gist can be provided especially in the construction of state's net power information acquisition system for the optimal communication center frequency point of selection.
Description
Technical field
The invention belongs to electric-power metering fields, the especially a kind of side of low-voltage power line platform area's testing impedance and Noise Acquisition
Method.
Background technique
In low-voltage collecting meter reading integrated test system, need to test the function and communication of low-voltage powerline carrier communication unit
Ability, receptivity test are the important indicators of ability to communicate, are realized using carrier attenuation device to carrier communication unit at present
Receiver performance test, the carrier wave of the prior art are only able to achieve the decaying of single carrier wave frequency signal, can not achieve full rate decaying,
Be to carrier signal pad value it is fixed, it is not program-controlled, when test receiver performance, need to constantly change declining for fixed attenuation value
Subtract device module, test process is cumbersome and working efficiency is low.
Currently, the bandwidth carrier communication technology has become the important component of low-voltage power line communication, it is existing program-controlled
Attenuator has following two, and the program-controlled decaying of microwave regime is that single-ended attenuation cannot access power frequency 220v voltage, narrow
Attenuator with carrier wave does not adapt to the signal decaying of high frequency (2M~20M).
Summary of the invention
The present invention is to overcome above-mentioned deficiency, design it is a kind of it is easy to carry, hindered using a kind of simple low-voltage power line platform area
The method and system of anti-test and Noise Acquisition, facilitate the collection analysis for realizing low-voltage power line noise.
The present invention is to reach above-mentioned purpose by the following technical programs: a kind of low-voltage power line platform area's testing impedance and noise
The method of acquisition realizes low-voltage power line Noise Acquisition, analysis, comprising the following steps:
(1) Noise Acquisition analytical equipment analyzes work by connecting line coupled computer data acquisition；
(2) Noise Acquisition analytical equipment is internally integrated signal feedback net circuit, operational amplifier circuit, zero cross detection circuit, isolated from power
Circuit realization obtains noise signal from power line；
(3) data acquisition board converts data to digital signal and is input in computer, pass through noise by high-speed sampling
It analyzes software to calculate, realizes the analysis of noise signal, draw frequency time figure etc., intuitively show the amplitude-frequency image of signal.
The beneficial effects of the present invention are:
The present invention makes the acquisition of low-voltage power line noise, easy analysis, quick.It is easy to operate, it is communicated for low-voltage power line
The research of channel provides data supporting, can be in the optimal communication of selection especially in the construction of state's net power information acquisition system
Heart frequency point provides good selection gist.
Specific embodiment
Below by specific embodiment, the invention will be further described, and it is not limit that following embodiment, which is descriptive,
Qualitatively, this does not limit the scope of protection of the present invention.
A kind of method of low-voltage power line platform area's testing impedance and Noise Acquisition is realized low-voltage power line Noise Acquisition, is divided
Analysis, comprising the following steps:
(1) Noise Acquisition analytical equipment analyzes work by connecting line coupled computer data acquisition；
(2) Noise Acquisition analytical equipment is internally integrated signal feedback net circuit, operational amplifier circuit, zero cross detection circuit, isolated from power
Circuit realization obtains noise signal from power line；
(3) data acquisition board converts data to digital signal and is input in computer, pass through noise by high-speed sampling
It analyzes software to calculate, realizes the analysis of noise signal, draw frequency time figure etc., intuitively show the amplitude-frequency image of signal, point
Analysis is completed, data save.
Although disclosing the embodiment of the present invention for the purpose of illustration, it will be appreciated by those skilled in the art that: not
Be detached from the present invention and spirit and scope of the appended claims in, various substitutions, changes and modifications be all it is possible, therefore, this
The range of invention is not limited to the embodiment disclosure of that.
Claims (1)
1. a kind of method of low-voltage power line platform area's testing impedance and Noise Acquisition realizes low-voltage power line Noise Acquisition, analysis,
It is characterized by comprising following steps:
(1) Noise Acquisition analytical equipment analyzes work by connecting line coupled computer data acquisition；
(2) Noise Acquisition analytical equipment is internally integrated signal feedback net circuit, operational amplifier circuit, zero cross detection circuit, power isolation circuit
Realization obtains noise signal from power line；
(3) data acquisition board converts data to digital signal and is input in computer, pass through noise analysis by high-speed sampling
Software calculates, and realizes the analysis of noise signal, draws frequency time figure etc., intuitively shows the amplitude-frequency image of signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811234028.6A CN109357752A (en) | 2018-10-23 | 2018-10-23 | A kind of method of low-voltage power line platform area's testing impedance and Noise Acquisition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811234028.6A CN109357752A (en) | 2018-10-23 | 2018-10-23 | A kind of method of low-voltage power line platform area's testing impedance and Noise Acquisition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109357752A true CN109357752A (en) | 2019-02-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811234028.6A Pending CN109357752A (en) | 2018-10-23 | 2018-10-23 | A kind of method of low-voltage power line platform area's testing impedance and Noise Acquisition |
Country Status (1)
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| CN (1) | CN109357752A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112910505A (en) * | 2021-02-03 | 2021-06-04 | 青岛鼎信通讯股份有限公司 | Noise elimination circuit applied to medium-voltage power line communication equipment |
Citations (5)
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|---|---|---|---|---|
| CN202231717U (en) * | 2011-10-19 | 2012-05-23 | 南京致德软件科技有限公司 | High-frequency noise sampling and playback system for low voltage power line |
| CN103063936A (en) * | 2012-12-19 | 2013-04-24 | 中国电力科学研究院 | Spot low-voltage power line carrier channel noise testing system and method thereof |
| CN103063926A (en) * | 2012-12-19 | 2013-04-24 | 中国电力科学研究院 | Test method and test device for low-voltage power line narrowband carrier access impedance |
| KR20150072010A (en) * | 2013-12-19 | 2015-06-29 | 에스티엑스조선해양 주식회사 | System for measuring vibration and noise of ship |
| CN108631819A (en) * | 2017-03-15 | 2018-10-09 | 国网四川省电力公司电力科学研究院 | Power line carrier noise jamming tests system and test method |
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2018
- 2018-10-23 CN CN201811234028.6A patent/CN109357752A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202231717U (en) * | 2011-10-19 | 2012-05-23 | 南京致德软件科技有限公司 | High-frequency noise sampling and playback system for low voltage power line |
| CN103063936A (en) * | 2012-12-19 | 2013-04-24 | 中国电力科学研究院 | Spot low-voltage power line carrier channel noise testing system and method thereof |
| CN103063926A (en) * | 2012-12-19 | 2013-04-24 | 中国电力科学研究院 | Test method and test device for low-voltage power line narrowband carrier access impedance |
| KR20150072010A (en) * | 2013-12-19 | 2015-06-29 | 에스티엑스조선해양 주식회사 | System for measuring vibration and noise of ship |
| CN108631819A (en) * | 2017-03-15 | 2018-10-09 | 国网四川省电力公司电力科学研究院 | Power line carrier noise jamming tests system and test method |
Non-Patent Citations (1)
| Title |
|---|
| 张秀秀: "低压电力线信道噪声特性分析", 《山西电子技术》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112910505A (en) * | 2021-02-03 | 2021-06-04 | 青岛鼎信通讯股份有限公司 | Noise elimination circuit applied to medium-voltage power line communication equipment |
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Application publication date: 20190219 |
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