Multi-path detection arc light protection system for vcs isolation switch box

The invention discloses a multi-path detection arc light protection system for a vcs isolation switch box, and belongs to the technical field of power grid safety. The system adopts multi-path detection information sources to detect whether arc light occurs or not, and compared with a single arc light detection and arc light detection and current detection matching mode, the arc light protection system has the advantages that the arc light detection efficiency is improved; the safety problem caused by sensor faults can be well eliminated, the probability of misjudgment caused by environmental influence is smaller, and higher accuracy is achieved; according to the method, the condition that one indication condition is met serves as an initial condition, the time when the other indication condition or two indication conditions are met is predicted, if it is detected that any indication condition is met within a certain range of the prediction time, circuit breaking is executed immediately, and compared with jud