Abstract :
Along with the continuous development of Ethernet technology based on optical fiber communication, the current trunk network of distribution automation system has been mostly built on optical network communication mode with the other methods playing the supplementary roles. No matter adopting the fiber optic communication module or the industrial Ethernet exchanger, the optical Ethernet could offer the reliable Ethernet reusable technology, which could dramatically improve the reliability and synchronization of the DA system by distributing the working bandwidth more efficiently and building independent communication virtual channels without adding the number of optic fibers. With its core functions of quick trouble diagnosis, isolating and recovering, the feeder automation system (FA) is one of the most important parts of distribution automation system (DA). The development of communication technology has brought the revolutionary effects to FA. First of all, the optical Ethernet could offer the channel multiplexing technology, which provides a separate channel for troubleshooting of FA as well as the communication channel for three normal remote functions of terminal units. It is brand new and different data communication processing mode compared with conventional one, which could dramatically improve the synchronization of data transmission and the reliability of FA system. Secondly, during the process of FA troubleshooting, the definition mode based on the fixed value down-installed is widely used. With the independent channel of FA, the terminal unit parameter could be customized and installed flexibly. The FA operation mode could be set according to the practical site situation. Namely, the FA system could be set flexibly as: the operation mode of voltage model, the operation mode of electric current model, the operation mode of reclosers and the operation mode of mixing models. The setting of these operation modes could be freely adjustable instead of being - reset unchangeably in the factory, which makes it more convenient and practical to maintain the automation system. In view of the flexibility and particularity of rated load condition and operation configuration of DA, the online DTS of DA is proposed in this article to simulate the running situation on site to validate the validity of terminal configuration and rated-loading operation setting.
Keywords :
optical fibre LAN; power distribution lines; power engineering computing; wireless channels; Ethernet technology; channel multiplexing technology; data communication processing; distribution automation system; electric current model; feeder automation system; industrial Ethernet exchanger; optical Ethernet; optical fiber communication; revolutionary effects; virtual channels; Automation; Communication industry; Data communication; Ethernet networks; Isolation technology; Optical fiber communication; Optical fiber networks; Optical mixing; Optical network units; Telecommunication network reliability; Distribution Automation (DA); Ethernet; Fault Diagnosis; Feeder Automation (FA);
