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A station area identification method based on ofdm carrier signal

A technology of carrier signal and identification method, which is applied in the field of station area identification based on OFDM carrier signal, and can solve problems such as the inability to effectively identify the relationship between station area and household change

Active Publication Date: 2021-09-14
SPL ELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the fact that the low-voltage station area identification equipment put into use in the market at present cannot effectively identify the relationship between station area households, the present invention provides a station area identification method based on OFDM carrier signals

Method used

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  • A station area identification method based on ofdm carrier signal
  • A station area identification method based on ofdm carrier signal
  • A station area identification method based on ofdm carrier signal

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Embodiment Construction

[0029] The present invention provides a station area identification method based on OFDM carrier signal, which includes two processes. First, it is necessary to confirm the attenuated OFDM sub-carrier frequency point from the second to the first as the station area identification signal, and then use the selected sub-carrier Carrier OFDM signal for station area identification. In the first process of selecting the subcarrier frequency point, the low-voltage concentrator carrier module CCO first sends out the station area identification test signal of all subcarriers within 10-500kHz in the form of OFDM signal, which is received by the high-voltage three-phase carrier communication module STA-P3H . The STA-P3H feeds back the received signal strength of each subcarrier to the CCO. The CCO selects the sub-carrier frequency point with greater attenuation as the selected sub-carrier frequency point for the final station identification transmission signal. Then in the second proce...

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Abstract

A station area identification method based on the OFDM carrier signal of the present invention comprises two processes. First, it is necessary to confirm the attenuated OFDM subcarrier frequency point from the second to the first as the station area identification signal, and then use the selected subcarrier The OFDM signal is used to identify the station area; through the carrier communication between the secondary side and the primary side of the distribution transformer, the frequency form of the station area identification signal is confirmed, and the carrier communication module on the primary side sends out a blocking secondary side station area identification signal on the primary side The transmitted signal, so as to ensure that the station area identification signal based on power line transmission cannot be transmitted to other station areas, so as to effectively identify the relationship between station area households and substations.

Description

technical field [0001] The invention relates to the technical field of power line carrier communication, in particular to a station area identification method based on OFDM carrier signals. Background technique [0002] The correct identification of the household transformer relationship in the station area is the business requirement of the current low-voltage power distribution. The power consumption management department needs to check the user files based on this to ensure that the corresponding file relationship of the power supply users under the transformer in a station area is accurate, and to ensure correct management data. Based on the correct relationship between households in the station area, the power consumption management department can correctly calculate the total electricity consumption of users in the station area, judge the line loss rate in the station area, and effectively track and analyze methods to reduce the line loss rate. The household transforme...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B3/46H04B3/54G08C19/00
CPCG08C19/00H04B3/46H04B3/54H04B2203/5466H04B2203/5479
Inventor 庞浩李常青楼红伟
Owner SPL ELECTRONICS TECH CO LTD