A Microprocessor Based Monitoring and Protection System for a Series Capacitor Zn0 Nonlinear Bypass Resistor

The result of this development effort is the successful application of microprocessor and fiber optic technologies to the monitoring and protection of ZnO nonlinear bypass resistors. Two systems have been implemented and have undergone extensive fault testing. Both systems have operated correctly and have exhibited excellent noise and transient surpression. The developed monitoring and protection algorithm is unique, demonstrating the versatility of the microprocessor technology as applied to power system monitoring and protection problems. The fiber optic analog channel developed for this application is unique, exhibiting a high level of accuracy, and providing excellent electrical isolation between an active power system and sensitive digital systems.