Urban distribution network wide-area protection host based on EPON

Abstract

The invention relates to an urban distribution network wide-area protection host based on an EPON, wherein the OLT module, the DSP front collection module, the DSP logic processing module, the communication management module and the power supply module are installed in the shell. The OLT module communicates with a plurality of existing ONUs. The DSP preposed collection module is respectively communicated with the OLT module and the DSP logic processing module, wherein the communication management module is respectively communicated with the OLT module, the DSP preposed collection module and the DSP logic processing module, and the OLT module, the DSP preposed collection module, the DSP logic processing module and the communication management module are respectively connected with the powersupply module. Compared with the prior art, the method has the advantages of high information interaction speed, high anti-interference capability, high processing speed and the like.

Description

technical field [0001] The invention relates to the technical field of distribution network wide-area protection, in particular to an EPON-based urban distribution network wide-area protection host. Background technique [0002] With the continuous improvement of the level of urban power distribution automation, the overall development of power distribution automation has brought about a series of information storage and circulation, operation and maintenance working methods, plant and station equipment fault handling, operation maintenance mode and management decision-making of the management team, etc. urgent research topic. The distribution automation and operation management system uses modern electronic technology, communication technology, computer and network technology to integrate real-time information, offline information, user information, grid structure parameters, and geographic information of the distribution network to form a complete automation and operation ...

AI Technical Summary

Problems solved by technology

Traditional distribution network automation systems usually use overcurrent protection to isolate faults, which have disadvantages such as inaccurate fault location, wide power outage range, and inability to automatically restore power supply.

[0003] At present, research on wide-area protection devices continues. For example, Chinese patent CN202535154U discloses a wide-area intelligent control host device for regional power grids. The device uses a DSP processing chip as the core and uses optical fiber Ethernet to collect intelligent control units. The information of the merging unit with the electronic transformer is still delayed during data collection, which may lead to major accidents

[0004] At the same time, the time synchronization technology methods in the prior art, such as relying on an external synchronization clock source for synchronization and using a network synchronization protocol similar to NTP for time synchronization, etc., all need to rely on an external independent synchronization device for time synchronization, resulting in The whole system has disadvantages such as complex architecture, instability, unreliability, high cost, and low time synchronization accuracy.

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