Dual Power Electricity Supply of Photoelectric Conversion Device in Optical Fiber Relay Protection

In the use of switching device manner of relay protection private channel in Shanxi electric network,the operation coefficient of relay protection is enhanced greatly.The main reason is that every section adopts dual configuration.In the light of the single power defect of photoelectric conversion device in relay protection and the necessity and advantage of the dual power combining with experiment,the theory and practice principle for using the dual power to enhance the channel reliability probability in photoelectric conversion device of the relay protection are proposed.