62. Developing & Engineering State-of-the-Art Governing & Control System for Tala Hydro Electric Project Shrivastava M.P. (BHEL Journal, December 2003, pp. 1–13). Abstract BHEL is supplying the Pelton turbines for the 6x170 MW Tala HEP. The Pelton turbines are equipped with single deflector servomotor, five needle servomotors and nozzle selection through solenoid valve for optimum efficiency. The Governing technology for the turbines is based on digital control, which offers several advantages. Electronic cam has been provided through the software for realizing deflector vs needle relationship. Hydro mechanical cabinet has been designed to suit the 100 kg/cm2 oil pressure system. The needle control cabinet developed incorporates the latest servo valves and manifold technology. BHEL has also engineered a microprocessor-based system for sequence control of turbine, governor, excitation system and man-machine interface for this project. Computer control system has also been engineered to control the power house from remote control through the computer. SCADA system has been developed to work on the telephone hook-up line. The computer control system is intended for joint active power control, joint reactive power control, water management system, video camera system and silt monitoring system. The various field parameters are transmitted through optimal fibre ground wire with termination equipment in this power house. Top Keywords SCADA, Hydro turbine, Hydro mechanical cabinet, Data acquisition system, Electro hydraulic governor, Pressure pumping set, Computer control system, Load despatch centre, Computer aided design, Man-machine communication, Uninterrupted power supply, Distributed control system, Mean time to repair, Mean time between failures. Top |