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10kV line impedance detection device

A technology of line impedance and detection device, applied in measurement device, measurement of resistance/reactance/impedance, measurement of electrical variables, etc., can solve the problems of low efficiency, high cost, and complicated device construction.

Inactive Publication Date: 2020-09-01
QINGDAO TOPSCOMM COMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The above method has the following disadvantages: the device is complex to build, additional means of communication are required to synchronize power information, low efficiency, and high cost

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  • 10kV line impedance detection device
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Embodiment Construction

[0016] See attached figure 1 , the present invention is a kind of portable impedance measuring device, is made up of two parts (1) and (2), is made up of display control unit, current detector, voltage sampler, signal source, receiving indicator and directional coupler in device 1 composition. It is characterized in that: the display control unit is used to realize the overall control and display in the device 1, the current detection, voltage sampling and receiving indicators are used to collect the sending and receiving signals, and the directional coupler is used to realize the feeding network of the device 1 signal. The device (2) is a high-voltage coupler with a built-in impedance conversion circuit. In this example, the impedance ratio is close to 1:1, and the device (2) realizes high and low voltage voltage isolation.

[0017] In the embodiment of the invention, the signal source sends a signal of a specified frequency, passes directly through the directional coupler, ...

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Abstract

A medium-voltage line impedance detection device comprises two devices; a directional coupler, a voltage sampler, a current detector, a signal source, a receiving indicator and a display controller are arranged in the device (1), and the features are that the device sends, receives and displays signals. The device (2) is a high-voltage coupler, and is characterized in that a 10kV medium-voltage line feed network is carried out on a signal source signal by means of a high-voltage coupling capacitor and a feed network transformer. The device (1) is used as a data transceiving processor, has a visual interface, is powered by a battery of the whole equipment, is convenient to carry, and can improve the on-site working efficiency.

Description

technical field [0001] The invention relates to a 10kV line impedance detection device. Background technique [0002] The medium-voltage line itself is not a good signal transmission path. In actual use, it is affected by the length of the line. At the same time, its signal-to-noise ratio will vary drastically with the change of switching load. In the current medium-voltage carrier signal transmission If the line impedance cannot be dynamically monitored, good line impedance matching will not be possible. Impedance mismatch will cause a large number of echo reflections, resulting in the failure of effective power to be fed into the network, affecting the communication distance and signal quality of power line carrier communication relying on medium-voltage lines. [0003] At present, the channel monitoring method of medium-voltage lines is: build systems at both ends of the line AB, inject carrier signals from A-side, and receive the transmitted carrier signals at B-side. Kn...

Claims

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Application Information

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IPC IPC(8): G01R27/08
CPCG01R27/08
Inventor 徐剑英季册
Owner QINGDAO TOPSCOMM COMM