Microprocessor-based on-load valve sequencing for a turbo-alternator

An analog on-load valve sequencing system that is used to test the performances of the valves on a turbo-alternator can be replaced by a microcomputer testing system. On the way to the full-scale computerising of turbo-generator control systems, this type of testing system may be used under the control of a full-size supervisory computer. This microprocessor-based testing system provides test sequencing of the valves of an Electro-Hydraulic Governor. The hardware for the interfacing and scaling, and the firmware for the microprocessor are developed for one valve. The extension of the technique to the task of testing multiple valves in sequence is also discussed.