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Control system for improving line impedance stabilizing network low-frequency sampling precision, and control method thereof

A technology for stabilizing network and line impedance, which is applied in the field of control systems for improving low-frequency sampling accuracy of line impedance stabilizing networks, can solve problems such as lack of correction functions, and achieve the effect of improving sampling accuracy and reducing sampling errors

Active Publication Date: 2015-01-14
ELECTRIC POWER RES INST OF GUANGXI POWER GRID CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the actual LISN product is designed according to 50Ω / / 50μH+5Ω V-type LISN, it does not have this correction function

Method used

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  • Control system for improving line impedance stabilizing network low-frequency sampling precision, and control method thereof
  • Control system for improving line impedance stabilizing network low-frequency sampling precision, and control method thereof

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Embodiment Construction

[0019] The technical solutions of the present invention will be further described below through the accompanying drawings and embodiments.

[0020] Such as figure 1 As shown, the control system for improving the low-frequency sampling accuracy of the line impedance stabilization network according to the present invention is composed of a T network unit, a decoupling unit, a communication control unit, an attenuator unit, a measuring device and a device under test. The decoupling unit is respectively connected with the T network unit, the communication control unit, the device under test, and the attenuator unit, and the attenuator unit is forwardly connected with the measuring device.

[0021] figure 2 Provided in the present invention to improve the line impedance stabilization network low-frequency sampling accuracy of the control system of each component specific connection relationship and parameters are as follows:

[0022] 50Ω / / 50μH+5Ω V-type LISN has four ports, whic...

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Abstract

The invention provides a control system for improving the line impedance stabilizing network low-frequency sampling precision, and the control method thereof. The system comprises a T network unit, a decoupling unit, a communication control unit, an attenuator unit, measuring equipment and measured equipment. The decoupling unit is connected with the T network unit, the communication control unit, the measuring equipment and the measured equipment respectively; and the attenuator unit and the measuring equipment are connected in the forward direction. An inner relay is controlled by the communication control unit to select different sampling and decoupling capacitors in the decoupling unit; and combined with the design of output attenuator unit, the invention provides a convenient and effective scheme for improving the line impedance stabilizing network low-frequency sampling precision in a carrier communication performance test.

Description

technical field [0001] The invention relates to the metering and testing field of an electricity consumption information collection system, in particular to a control system and a control method for improving the low-frequency sampling accuracy of a line impedance stabilization network. Background technique [0002] With the development of power supply management automation, the application of carrier energy meters in remote centralized meter reading systems is becoming more and more extensive, and the testing and evaluation of carrier communication functions of energy meters is a problem that needs to be taken seriously. The test method of the carrier communication parameters of the carrier energy meter has been clearly stipulated in DL / T698-1999, and the 50Ω / / 50μH+5Ω V-type line impedance stabilization network LISN (Line Impedance Stabilization Network) is used as the test circuit of the carrier communication parameters. The values ​​in the test circuit are directly transf...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R35/00G05B19/04
Inventor 周毅波李刚卿柏元曾博陈俊周柯蒋雯倩潘俊涛何艺
Owner ELECTRIC POWER RES INST OF GUANGXI POWER GRID CO LTD
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