Program-controlled load impedance switching circuit for low-voltage power line

A low-voltage power line and program-controlled load technology, which is applied in line transmission components, distribution line transmission systems, line transmission monitoring/testing, etc., to achieve the effect of simple operation and controllable impedance

Inactive Publication Date: 2019-02-01
ELECTRIC POWER SCI & RES INST OF STATE GRID TIANJIN ELECTRIC POWER CO +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no special equipment that can simulate the continuous adjustment of the load impedance of the power line.

Method used

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  • Program-controlled load impedance switching circuit for low-voltage power line

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Embodiment Construction

[0011] The present invention will be further described in detail below in conjunction with the accompanying drawings and through specific embodiments. The following embodiments are only descriptive, not restrictive, and cannot limit the protection scope of the present invention.

[0012] A program-controlled load impedance switching circuit for low-voltage power lines, including a low-pass isolation attenuator, a central control circuit, a load impedance switching device, a digital tube display, and a host computer. The input end of the load impedance switching device is provided with a strong current input port and USB power supply port, the output end of the load impedance switching device is connected to the low-pass isolation attenuator, the load impedance switching device is connected to the digital tube display through the central control circuit, the host computer is connected to the load impedance switching device through the central control circuit, and the low-pass iso...

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Abstract

The invention relates to a program-controlled load impedance switching circuit for a low-voltage power line. The program-controlled load impedance switching circuit comprises a low-pass isolation attenuator, a central control circuit, a load impedance switching device, and a digital tube display; a strong current input port and a USB power supply port are arranged at an input end of the load impedance switching device, an output end of the load impedance switching device is connected with the low-pass isolation attenuator, and the load impedance switching device is connected with the digital tube display through the central control circuit. The program-controlled load impedance switching circuit disclosed by the invention can conveniently accomplish the impedance adjusting on the low-voltage power carrier detection environment. The impedance is controllable when the low-voltage power detection is performed, the operation is simple, and effective data support is provided for researchinglow-voltage power line communication signal quality; particularly, various impedances environments of the power line can be simulated by using the device in the construction of a state grid power utilization information collection system, thereby effectively detecting the performance advantages and disadvantages of a carrier product under different power line loads.

Description

technical field [0001] The invention belongs to the field of power metering, in particular to a program-controlled load impedance switching circuit for low-voltage power lines. Background technique [0002] In order to improve the communication performance of carrier products on the power line and realize high-speed and reliable long-distance communication, it is necessary to carry out effective analysis and detection of carrier products. Since the low-voltage power carrier communication technology uses the power line as the medium for transmission, the electrical equipment of the low-voltage line is heavy, and the load impedance of the power line changes greatly. In order for the product to better adapt to this environment, it is necessary Check the communication capability. At present, there is no special equipment that can simulate and realize continuous adjustment of the load impedance of the power line. Contents of the invention [0003] In order to overcome the abo...

Claims

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Application Information

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IPC IPC(8): H04B3/54H04B3/46H04B3/04
CPCH04B3/04H04B3/46H04B3/54
Inventor 曹国瑞滕永兴钟睿君于学均杨霖朱逸群孙淑娴朱明明季浩何泽昊
Owner ELECTRIC POWER SCI & RES INST OF STATE GRID TIANJIN ELECTRIC POWER CO
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