The Research On The Practical Application Of The Fiber Protection Channel For High-tension Line

With the development of microprocessor relay protection, high frequency direction pilotprotection and HF longitudinal protection blocking distance protection mainly consisting ofdual protection is220kV and above voltage rank high voltage transmission line protectionconfiguration of main way, protection channel is usually a high frequency carrier wavechannel. The models for the maintenance of the security and stability of power system plays agreat role. But as a result of optical fiber technology in electric power system each have awide range of applications, the transmission of relay protection information from the originalhigh frequency carrier channel into a fiber channel has become an irreversible trend.Along with the social development to the electric power resource dependence degreeincrease, power system become more and more huge and complex, large power system safeand stable operation of the increasingly high demand. Compared to the high frequencychannel based high frequency blocking protection, high voltage transmission line currentdifferential protection has the advantages of simple principle, high reliability, wide adaptationrange a series of unique advantages, gradually the mainstream direction of the development ofline protection. The current in the power system high voltage line protection optical fiberchannel has been increasingly used, the problem is the fiber channel engineering applicationand daily maintenance of not familiar and not understanding, problem processing is notenough time, it seriously affects the safe operation of electrical equipment.In this paper, the development process of optical fiber channel, abc. As well as in thehigh voltage transmission line in engineering role. Focusing on high voltage transmission lineprotection optical fiber channel site engineering related key problems research summary, suchas fibre channel double configuration, self-healing ring, the anti-jamming problems fromtheory and practical application were analyzed and discussed, some problems needingattention in the analysis of.In order to improve the pressure transmission line protection optical fiber channeloperation reliability, and refused to move from protection device causes the system tocollapse or damage to the equipment, reduce the protection channel abnormal causes anequipment outage phenomenon, on test methods for optical fiber channel and common fault,this paper carried out a detailed discussion on the.