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Device for measuring impedance of power line access point

A technology for measuring devices and power lines, applied in measuring devices, measuring resistance/reactance/impedance, measuring electrical variables, etc., can solve the problems of not having the function of long-term signal storage, unfavorable long-term recording and playback of power line noise, etc.

Pending Publication Date: 2018-06-29
ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] The invention provides a device for measuring the impedance of power line access points, which solves the technical problem that traditional oscilloscopes and spectrum analyzers generally do not have the function of long-term signal storage, which is not conducive to long-term recording and playback of power line noise

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  • Device for measuring impedance of power line access point
  • Device for measuring impedance of power line access point
  • Device for measuring impedance of power line access point

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Embodiment Construction

[0045] The embodiment of the present invention provides a device for measuring the impedance of power line access points, which solves the technical problem that traditional oscilloscopes and spectrum analyzers generally do not have the function of long-term signal storage, which is not conducive to long-term recording and playback of power line noise .

[0046] In order to make the purpose, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the following The described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the pre...

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Abstract

An embodiment of the invention discloses a device for measuring impedance of a power line access point. The device comprises a PCB (printed circuit board), a signal collector, a PC, a signal transmitter and a coupler, the signal collector, the PC, the signal transmitter and the coupler are fixedly arranged on the PCB, the output end of the signal collector is electrically connected with the inputend of the PC, the output end of the PC is electrically connected with the input end of the signal transmitter, the output end of the signal transmitter is electrically connected with the input end ofthe coupler, the output end of the coupler is electrically connected with a power line, and the input end of the signal collector is electrically connected with the power line. By the device, the technical problem that conventional oscilloscopes and spectrometers do not have a long-time signal storage function generally, which goes against long-time recording and playback of power line noise is solved.

Description

technical field [0001] The invention relates to the technical field of power line testing, in particular to a device for measuring the impedance of a power line access point. Background technique [0002] The on-site comprehensive test device of the acquisition terminal is positioned as a portable on-site comprehensive test tool, which is required to be light, multi-functional and easy to use. It can effectively measure power line noise, access point impedance, and attenuation characteristics. It also has auxiliary functions such as station area identification and smart energy meter communication function judgment. [0003] The main factors affecting the reliability of power line communication are: noise level, impedance change, channel attenuation, station area difference, etc. So it is necessary to measure the noise, impedance and attenuation of the low-voltage power line communication channel. [0004] When using traditional oscilloscopes and spectrum analyzers to measu...

Claims

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Application Information

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IPC IPC(8): G01R27/14
CPCG01R27/14
Inventor 肖勇金鑫张乐平罗鸿轩
Owner ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD
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