A point-to-point optical fiber online monitoring system and online monitoring method

Abstract

The invention relates to a point-to-point optical fiber online monitoring system and method. The system comprises a protection device, an online monitor and an intelligent terminal. The intelligent terminal is provided with an optical fiber communication interface, a network monitoring communication interface and a message forwarding processing module. The protection device is connected to the optical fiber communication interface through a point-to-point optical fiber. The message forwarding processing module is connected to the optical fiber communication interface and the network monitoringcommunication interface. The network monitoring communication interface and the protection device are connected to the online monitor through a process layer network. The protection device sends a tripping and closing GOOSE message to the intelligent terminal through the optical fiber communication interface. The online monitor obtains the tripping and closing GOOSE message from the process layernetwork. The intelligent terminal sends a feedback GOOSE message to the online monitor through the network monitoring communication interface. The online monitor compares the feedback GOOSE message and the tripping and closing GOOSE message so as to complete the point-to-point fiber monitoring. Compared with the prior art, the monitoring method of the invention is simple and reliable.

Description

technical field [0001] The invention relates to a monitoring system and method, in particular to a point-to-point optical fiber online monitoring system and an online monitoring method. Background technique [0002] The electrical secondary operation circuit is a circuit for operating and controlling electrical primary equipment, and is an important part of relay protection. Today, when digital substations begin to be used, under the situation that relay protection equipment requires condition-based maintenance, the "point-to-point optical fiber" that is widely used as relay protection export control is obviously unable to meet the requirements because it does not have the online monitoring function. [0003] Due to long-time running or other reasons, the point-to-point optical fiber may have abnormal GOOSE message errors. Timely diagnosis of such anomalies is extremely important to protect export operations. However, it is known that smart terminals generally cannot provi...

AI Technical Summary

Problems solved by technology

However, it is understood that smart terminals generally cannot provide point-to-point fiber detection capabilities, and there is no system that can realize point-to-point fiber online monitoring

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