Downlink signal processing method of distribution automation system

A technology of power distribution automation and signal processing, which is applied in the direction of optical fiber transmission, can solve the problems of high cost, difficult construction, high investment cost of optical fiber communication facilities, etc., and achieve the effect of speeding up the construction progress and reducing the construction cost

Inactive Publication Date: 2016-04-20
DALIAN POWER SUPPLY COMPANY STATE GRID LIAONING ELECTRIC POWER +2
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Problems solved by technology

However, from the actual situation, for areas without reserved communication pipelines, the investment cost of new optical fiber communication facilities is relatively high, and construction is difficult; for areas with reserved communication pipelines, due to ground subsidence and other pipeline construction, 20% -30% of the pipes are blocked, resulting in the inability of optical fibers to pass through
For these reasons, the cost of networking by using optical fiber communication alone is relatively high

Method used

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  • Downlink signal processing method of distribution automation system

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Embodiment Construction

[0013] The present invention will be further described below in conjunction with accompanying drawing:

[0014] like figure 1 Shown: The optical network unit device receives the optical signal sent by the optical fiber communication system, converts the optical signal into a digital signal, and sends the digital signal again. Wherein, the optical network unit device is ONU (Optical Network Unit). The optical signal sent by the optical fiber communication system can be downlink communication data in the form of light wave sent by OLT (optical line terminal) in broadcast mode. After conversion, the optical network unit device can send out a digital signal conforming to the IEEE802.3 standard for Indicates downlink communication data.

[0015] The head-end device receives the digital signal, converts the digital signal into a carrier signal, and then sends the carrier signal. The head-end device can be a device equipped with a carrier signal processing chip, such as a power mo...

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Abstract

The invention relates to a downlink signal processing method of a distribution automation system. The method is characterized in that the method comprises: an optical signal is converted into a digital signal by equipment; the digital signal is converted into a carrier signal; the gained carrier signal is converted into a digital signal; and then the signal is sent to a user terminal. With the method, mixed networking of fiber communication and carrier communication is realized, so that fiber laying on communication line construction can be reduced and thus the communication line construction cost can be reduced; and the intelligent grid construction progress can be accelerated.

Description

technical field [0001] The invention relates to a communication signal processing method, in particular to a distribution automation system downlink signal processing method. Background technique [0002] Distribution automation system is the main content of smart grid construction. The smart grid is based on an open and interconnected information model, by loading system digital equipment and upgrading the grid network management system, it realizes the entire process of the power industry such as power generation, transmission, power supply, power consumption, customer power sales, grid level scheduling, and comprehensive services. Intelligent, informatization, and hierarchical interactive management, while optical fiber communication is the main communication method in the transformation of distribution automation systems. However, from the actual situation, for areas without reserved communication pipelines, the investment cost of new optical fiber communication facilit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/25
CPCH04B10/25
Inventor 孙婷吴江宁栾敬钊祁广源李若斌唐昱华尤峻田晓明万涛杨永辉
Owner DALIAN POWER SUPPLY COMPANY STATE GRID LIAONING ELECTRIC POWER
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