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Method and device for simulating noise of power line carrier channel

A power line carrier and channel noise technology, applied in distribution line transmission systems, electrical components, transmission monitoring and other directions, can solve problems such as complex operation, affecting noise simulation effects, and noise signal coupling.

Active Publication Date: 2014-02-19
NORTH CHINA ELECTRICAL POWER RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing methods can simulate very few types of noise, the operation is complicated, the cost of equipment is high, and it is difficult to couple the simulated noise signal to the power line, which seriously affects the effect of noise simulation

Method used

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  • Method and device for simulating noise of power line carrier channel
  • Method and device for simulating noise of power line carrier channel
  • Method and device for simulating noise of power line carrier channel

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Embodiment 1

[0019] Such as figure 1 As shown, the embodiment of the present invention discloses a structural block diagram of a power line carrier communication channel noise simulation device. The power line carrier communication channel noise simulation device 10 includes: a high-pass filter 101, an AD acquisition module 102, a noise generation module 103, and a noise generation module 103. A superposition module 104 , a DA conversion module 105 and a coupling module 106 . The 50Hz power frequency power signal in the power line network is filtered out by the high-pass filter 101, thereby extracting the power line carrier signal of the high frequency band, and the power line carrier signal is converted from an analog signal to a digital signal by using the AD acquisition module 102, according to the signal to be simulated Target noise, the noise generation module 103 generates noise data, the noise superposition module 104 injects the generated noise data into the digital signal, complet...

Embodiment 2

[0033] The invention provides a method for simulating noise of a power line carrier communication channel, such as Figure 5 As shown, the method includes:

[0034] Step S501, extracting the high frequency band carrier signal from the power signal of the power line network;

[0035] Step S502, converting the high frequency band carrier signal into a digital carrier signal;

[0036] Step S503, generating noise data according to the target noise to be simulated, and superimposing the noise data on the digital carrier signal to obtain a digital carrier signal after noise injection;

[0037] Step S504, converting the noise-injected digital carrier signal into a noise-injected analog carrier signal;

[0038] Step S505, coupling the analog carrier signal back to the power line network.

[0039] The various basic noise elements and noise generation functions that constitute the actual noise of the power consumption site can be pre-stored by the computer; when performing noise simu...

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Abstract

The invention discloses a method and a device for simulating the noise of a power line carrier channel. The method comprises the following steps that: a high-frequency section carrier signal can be extracted from a power line network; the high-frequency section carrier signal can be switched into a digital carrier signal; a target noise property requirement set by a user can be received, and a noise data can be generated according to the target noise property requirement; the noise data can be superposed to the digital carrier signal so as to obtain a noise superposed signal; the noise superposed signal can be switched into a noise superposed simulating signal; and the noise superposed simulating signal can be coupled to the power line network. The stimulation to the interference noise of the power line carrier channel is completely realized in a digital mode, the introduction of the noise and the error in a simulating mode adjusting process is avoided, the adopted noise has expandability, and the manufacturing cost and the fault rate of the system are decreased.

Description

technical field [0001] The present invention relates to power line carrier communication technology, in particular to a low-voltage power line carrier communication channel noise simulation technology, specifically a power line carrier channel noise simulation method and device. Background technique [0002] Power Line Carrier Communication (PLC for short) is a unique communication method of the power system communication network. It uses low-voltage power lines and indoor subscriber lines for high-speed data communication, and it has become a research hotspot abroad in recent years. However, since the power line is originally designed to transmit electric energy for electrical equipment, it is not designed for communication itself, so its characteristics are difficult to directly meet the requirements of carrier communication in many aspects. Moreover, the communication environment of the power line channel is harsh, and there are characteristics such as poor impedance matc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B17/00H04B3/54H04B17/309H04B17/391
Inventor 宋雨虹袁瑞铭田海亭宋伟王思彤易忠林李顺昕钟侃鲁观娜周晖杨晓波
Owner NORTH CHINA ELECTRICAL POWER RES INST