String Monitoring and Control System for Solar Photo Voltaic Power Plants

This paper presents String Monitoring and Control System developed for Solar Photo Voltaic Power Plants. The developed system allows the operator to monitor and record the plant parameters at sub-system (string) level. Thus, bad strings if any alone can be isolated from remote, thereby preventing the bad string from making the plant operate at lower efficiency and reducing power generation. Also, array or the entire plant need not be shut down for fault in one string.