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Brand-new distribution room identification technology based on characteristics of power lines

An identification technology, power line technology, applied in the field of low-voltage carrier energy meter automatic reading control and energy information release system

Inactive Publication Date: 2011-05-25
QINGDAO TOPSCOMM COMM
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

The FSK power carrier signal method itself will cause misjudgment of station area identification due to common high-voltage cross-connection, common-ground cross-connection, cable coupling, etc., while the pulse current method not only cannot be well integrated in the carrier energy meter, but also requires on-site monitoring of the station area. The noise environment is relatively clean

Method used

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  • Brand-new distribution room identification technology based on characteristics of power lines
  • Brand-new distribution room identification technology based on characteristics of power lines
  • Brand-new distribution room identification technology based on characteristics of power lines

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Embodiment Construction

[0012] At present, the power supply of the on-site station area is transformed from the distribution network 10KV / 6KV, as shown in Figure 1. When the load current passes through links such as power transmission, power transformation, and power distribution, voltage drop and voltage loss will inevitably occur on the impedance of these links. If the load and the transmission line are ideal and purely resistive, the same-phase load voltage phase of each station area is consistent, as shown in Figure 2(A).

[0013] However, due to the complex structure of the distribution network, the uneven load distribution, and the load and transmission lines are not ideal and purely resistive, there will be a phase shift in the same-phase load voltage in each station area, and the shift is generally greater than 150us, as shown in Figure 2 (B ) shown.

[0014] The present invention relies on the TCC081C and TCC082C chips of Qingdao Dingxin and their derivative chips. The carrier signal of eac...

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Abstract

The invention provides a brand-new distribution room identification technology based on the characteristics of power lines, relating to the field of low-voltage power line carrier spread spectrum communication, in particular to a automatic reading control and energy source information publish system for low-voltage carrier electric energy meters. The technology provided by the invention is characterized in that since loads on power lines are remarkably different and change in real time, phase deviation can be caused on respective specific zero crossing points of any two power lines. In the technology, by depending on a zero-crossing time division communication manner of a Qingdao Topscomm spread spectrum carrier communication system, a carrier chip is used for tracking the phase deviation of each zero-crossing carrier signal, thus the distribution room of each zero crossing carrier signal is judged. The carrier chip is used for not only tracking all the zero-crossing carrier signals but also judging the distribution room of each zero crossing carrier signal per se, thus the accuracy is stable and reliable and no peripheral equipment is required to be added for a carrier electric energy meter.

Description

technical field [0001] The invention relates to the field of low-voltage power line carrier spread spectrum communication, in particular to a low-voltage carrier electric energy meter automatic reading control and energy information release system. Background technique [0002] In recent years, low-voltage power line spread spectrum carrier communication has been widely used in the field of carrier meter reading. However, when the carrier energy meter is installed, it is not possible to know exactly which station area it belongs to and which phase of the transformer it is powered by. The operation brings a lot of inconvenience, so the identification technology of the station area is particularly important. [0003] At present, the station area identification technology mainly adopts the FSK power carrier signal method or the method of combining the pulse current method and the FSK power carrier signal method. The FSK power carrier signal method itself will cause misjudgment...

Claims

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Application Information

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IPC IPC(8): H04B3/54H04B1/7085
Inventor 不公告发明人
Owner QINGDAO TOPSCOMM COMM
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